KR20200115860A - Benzotriazole compounds and inverted structure perovskite solar cells comprising the same - Google Patents

Abstract

The present invention provides a benzotriazole compound represented by chemical formula 1, and an inverted structure perovskite comprising the same. In the chemical formula 1, the definitions of R_1 to R_6 and L are as defined in the specification. The present invention can provide a novel benzotriazole compound having a simple synthesis method, excellent processability, and excellent solubility in polar solvents.

Description

Benzotriazole compounds and inverted structure perovskite solar cells comprising the same

The present invention relates to a novel benzotriazole compound and an inverted structure perovskite solar cell comprising the same.

As the 21st century enters, energy demand is rapidly increasing due to the rapid development of emerging countries such as China and India and the development of the information and electronic industry. In addition, the earth's oil reserves are depleted to the extent that they will be used for less than 100 years, and environmental problems such as greenhouse gas generation and air pollution resulting from the use of fossil fuels are emerging as a global problem. As one of the measures to overcome this complex situation, the development of new and renewable energy using pollution-free solar energy with no risk of depletion is being conducted competitively, mainly in advanced countries.

Solar cells are a kind of photoelectric energy conversion system that converts light energy emitted from the sun into electrical energy. Electron-hole pairs are generated in the semiconductor constituting the solar cell by the energy of the incident sunlight, and electricity is generated by being separated and collected by an electric field.

Currently, most of the solar cells commercially available are silicon solar cells, and while having a high energy conversion rate and a long lifespan, the production cost is high and there is a limit to the increase in efficiency. In order to overcome the limitations of such silicon solar cells, various materials are being developed, and perovskite was developed as a next-generation runner after silicon.

Perovskite solar cells are solar cell devices that use organic-inorganic composite materials with a perovskite structure as a light absorber, and have advantages such as high efficiency, low material cost, and low-temperature process or low-cost solution process. As it has most of the characteristics required for solar cells, it is in the spotlight as a new solar cell to replace silicon solar cells.

However, the perovskite solar cell has a problem in that the driving performance of the device is deteriorated when exposed to air due to the instability of the material of the perovskite layer. Therefore, it is necessary to develop a perovskite solar cell that can secure stability against such exposure to air and has high driving performance.

One object of the present invention is to provide a novel benzotriazole compound.

Another object of the present invention is to provide an inverted structure perovskite solar cell containing the benzotriazole compound.

One aspect of the present invention provides a benzotriazole compound represented by Formula 1:

[Formula 1]

(In Formula 1,

R ₁ to R ₄ may be the same or different, hydrogen, C ₁ to C ₁₀ alkyl, halogen, allyl, unsubstituted or substituted C ₆ to C ₂₀ aryl, unsubstituted or substituted N, O, P or Containing 1 to 4 hetero atoms selected from S, and the remaining ring atoms are C ₁ to C ₂₀ heteroaryl;

The substituted aryl or substituted heteroaryl is independently hydroxy, amine, nitro, cyano, halogen, allyl, unsubstituted or substituted C ₁ to C ₅ alkyl and unsubstituted or substituted C ₁ to C Aryl or heteroaryl substituted with one or more substituents selected from the group consisting of ₅ alkoxy;

L is C ₁ to C ₃₀ alkyl;

R ₅ is hydrogen, halogen or C ₁ to C ₁₀ alkyl;

,

,

또는

이고,R ₆ is hydrogen, C ₁ to C ₁₀ alkyl,

,

,

or

ego,

Here, X ₁ and X ₂ are independently hydrogen or C ₁ to C ₁₀ alkyl, and n is an integer of 1 to 20.)

In an embodiment of the present invention, the compound may be a compound represented by the following Formula 2 or Formula 3:

[Formula 2]

[Formula 3]

(In Formulas 2 and 3, the definitions of L, R ₅ and R ₆ are the same as those defined in Formula 1,

R ₇ is a group consisting of hydrogen, hydroxy, amine, nitro, cyano, halogen, allyl, unsubstituted or substituted C ₁ to C ₅ alkyl, and unsubstituted or substituted C ₁ to C ₅ alkoxy It is one or more substituents selected from.)

,

,

,

,

및

으로 구성된 군으로부터 선택되는 하나 이상일 수 있다.In an embodiment of the present invention, the compound is

,

,

,

,

And

It may be one or more selected from the group consisting of.

One aspect of the present invention is formed by sequentially stacking a substrate, a first electrode, a hole transport layer, a perovskite photoactive layer, an electron transport layer, a protective layer, and a second electrode,

The protective layer provides an inverted structure perovskite solar cell comprising a benzotriazole compound represented by the following Formula 1:

[Formula 1]

(In Chemical Formula 1, L and R ₁ to R ₆ are as defined above.)

In an embodiment of the present invention, the compound may be a compound represented by the following Formula 2 or Formula 3:

[Formula 2]

[Formula 3]

(In Formulas 2 and 3, L and R ₅ to R ₇ are as defined above.)

,

,

,

,

및

으로 구성된 군으로부터 선택되는 하나 이상일 수 있다.In an embodiment of the present invention, the compound is

,

,

,

,

And

It may be one or more selected from the group consisting of.

In an embodiment of the present invention, the thickness of the protective layer may be 1 nm to 10 nm.

In an embodiment of the present invention, the protective layer may further include a conjugated polymer electrolyte.

In an embodiment of the present invention, the benzotriazole compound included in the protective layer may be included in an amount of 50% to 100% by weight based on the total weight of the protective layer.

In an embodiment of the present invention, the hole transport layer is poly(N,N-bis(4-butylphenyl)-N,N-bis(phenyl)benzidine, polythiophene derivative, diketopyrrolopyrrole derivative, poly(thio Eno[3,4-b]thiophene-alt-benzodithiophene derivative, poly(phenylene vinylene) derivative, polycarbazole derivative, poly[bis(4-phenyl)(2,4,6-tri It may include any one selected from the group consisting of methylphenyl)amine, poly(triaryl amine), and combinations thereof.

In an embodiment of the present invention, the electron transport layer may include any one selected from the group consisting of fullerene, fullerene derivatives, phenyl-C ₆₁ -butyric acid methyl ester, phenyl-C ₇₀ -butyric acid methyl ester, and combinations thereof. .

One aspect of the present invention includes forming a first electrode and a hole transport layer on a substrate; Forming a perovskite light absorbing layer on the hole transport layer; Forming an electron transport layer on the perovskite light absorption layer; Forming a protective layer over the electron transport layer; And forming a second electrode on the protective layer. As a method of manufacturing an inverted structure perovskite solar cell comprising a, the protective layer provides a method of manufacturing an inverted structure perovskite solar cell comprising a benzotriazole compound represented by Formula 1 below:

[Formula 1]

(In Chemical Formula 1, L and R ₁ to R ₆ are as defined above.)

,

,

,

,

및

으로 구성된 군으로부터 선택되는 하나 이상일 수 있다.In an embodiment of the present invention, the compound is

,

,

,

,

And

It may be one or more selected from the group consisting of.

The present invention can provide a novel benzotriazole compound having a simple synthesis method, excellent processability, and excellent solubility in polar solvents. When this is used for an inverted structure perovskite solar cell, the stability of the perovskite layer is improved, thereby using the optical and electrical characteristics of the existing inverted structure perovskite solar cell as it is, and additionally using the open circuit voltage and/or Or it can bring about effects such as increase of photocurrent and extension of life.

The effects of the present invention are not limited to the above effects, and should be understood to include all effects that can be inferred from the configuration of the invention described in the detailed description or claims of the present invention.

1 is a schematic diagram showing a cross section of a solar cell according to an embodiment of the present invention.
2 is a graph showing a performance evaluation result of a solar cell according to an embodiment of the present invention.
3 is a graph showing a stability evaluation result of a solar cell according to an embodiment of the present invention.

Hereinafter, the present invention will be described with reference to the accompanying drawings. However, the present invention may be implemented in various different forms, and therefore is not limited to the embodiments described herein. In the drawings, parts not related to the description are omitted in order to clearly describe the present invention.

Throughout the specification, when a certain part "includes" a certain component, it means that other components may be further provided without excluding other components unless specifically stated to the contrary.

In the present specification, when a portion such as a layer, a film, a region, or a plate is said to be “on” another portion, this includes not only the case where the other portion is “directly above” but also the case where there is another portion in the middle.

The terms used in the present specification are only used to describe specific embodiments, and are not intended to limit the present invention. Singular expressions include plural expressions unless the context clearly indicates otherwise.

One aspect of the present invention provides a benzotriazole compound represented by Formula 1:

[Formula 1]

(In Formula 1,

R ₁ to R ₄ may be the same or different, hydrogen, C ₁ to C ₁₀ alkyl, halogen, allyl, unsubstituted or substituted C ₆ to C ₂₀ aryl, unsubstituted or substituted N, O, P or Containing 1 to 4 hetero atoms selected from S, and the remaining ring atoms are C ₁ to C ₂₀ heteroaryl;

The substituted aryl or substituted heteroaryl is independently hydroxy, amine, nitro, cyano, halogen, allyl, unsubstituted or substituted C ₁ to C ₅ alkyl and unsubstituted or substituted C ₁ to C Aryl or heteroaryl substituted with one or more substituents selected from the group consisting of ₅ alkoxy;

L is C ₁ to C ₃₀ alkyl;

R ₅ is hydrogen, halogen or C ₁ to C ₁₀ alkyl;

,

,

또는

이고,R ₆ is hydrogen, C ₁ to C ₁₀ alkyl,

,

,

or

ego,

Here, X ₁ and X ₂ are independently hydrogen or C ₁ to C ₁₀ alkyl, and n is an integer of 1 to 20.)

In the present specification, "aryl" refers to an aromatic system including one or more rings of C ₆ to C ₂₀ , for example, phenyl, naphthyl, biphenyl, terphenyl, anthryl, indenyl, phenanthryl, It may be any one selected from the group consisting of triphenylenyl, pyrenyl, peryleneyl, chrysenyl, naphthacenyl, fluoranthenyl, and combinations thereof, for example, phenyl.

In the present specification, “heteroaryl” refers to a ring aromatic system having 1 to 4 heteroatoms selected from N, O, P, or S, and the remaining ring atoms are C ₁ to C ₂₀ , for example, Benzofuranyl, benzothienyl, indolyl, benzopyrazolyl, coumarinyl, furanyl, isothiazolyl, imidazolyl, isoxazolyl, thiazolyl, triazolyl, pyrazolyl, pyridinyl, quinolinyl, pyrrolyl And it may be any one selected from the group consisting of a combination thereof.

The benzotriazole compound of the present invention is a monomolecular compound containing benzotriazole conjugated to the backbone and having an amine group in the side chain group.

The benzotriazole compound of the present invention has a simple synthesis method, excellent processability, and excellent solubility in polar solvents.

In one embodiment of the present invention, the benzotriazole compound may be a compound represented by Formula 2 or Formula 3:

[Formula 2]

[Formula 3]

(In Formulas 2 and 3, the definitions of L, R ₅ and R ₆ are the same as those defined in Formula 1,

R ₇ is a group consisting of hydrogen, hydroxy, amine, nitro, cyano, halogen, allyl, unsubstituted or substituted C ₁ to C ₅ alkyl, and unsubstituted or substituted C ₁ to C ₅ alkoxy It is one or more substituents selected from.)

,

,

,

,

및

으로 구성된 군으로부터 선택되는 하나 이상 일 수 있다. In one embodiment of the present invention, the benzotriazole compound is

,

,

,

,

And

It may be one or more selected from the group consisting of.

The benzotriazole compound can be synthesized through the synthesis method shown in Scheme 1 or Scheme 2:

[Scheme 1]

[Scheme 2]

,

,

또는

이고,(In the above Scheme 1 and Scheme 2, R ₆ is hydrogen, C ₁ to C ₁₀ alkyl,

,

,

or

ego,

Here, X ₁ and X ₂ are independently hydrogen or C ₁ to C ₁₀ alkyl, and n is an integer of 1 to 20.)

Another aspect of the present invention provides an inverted structure perovskite solar cell including a protective layer comprising a benzotriazole compound.

The reverse structure perovskite solar cell 1 includes a substrate 100, a first electrode 200, a hole transport layer 300, a perovskite photoactive layer 400, an electron transport layer 500, and a protective layer ( 600) and a second electrode 700 (FIG. 1).

In the present specification, "perovskite solar cell" refers to a solar cell using a perovskite material having excellent physical properties such as ferroelectric and superconducting phenomena as a photoactive layer of a solar cell.

The perovskite material is easy to adjust optical properties such as band gap in a desired direction by changing the composition of each material, and has a high light absorption coefficient in the visible light region, so it can sufficiently absorb light even at a relatively thin thickness to generate a lot of electric charge. I can.

In the present specification, the term "reverse structure perovskite solar cell" means that the electron transport layer is located on the transparent electrode based on the irradiation surface of sunlight, the perovskite layer is located on the electron transport layer, and the hole transport layer is located on the photoactive layer. Compared with a perovskite solar cell of a regular structure, a hole transport layer is located on the electrode based on the irradiation surface of sunlight, a perovskite layer is located on the hole transport layer, and an electron transport layer is located on the perovskite layer. It refers to a perovskite solar cell with a positioned shape.

The structured perovskite solar cell uses a metal oxide that requires high temperature firing of 400°C or higher in the electron transport layer, so it is difficult to mass-produce or manufacture a flexible device using a roll-to-roll process. On the other hand, the inverted structure perovskite solar cell is capable of a low temperature solution process and a flexible device can be manufactured.

In an embodiment of the present invention, the substrate 100 may be any one selected from the group consisting of glass, plastic, and combinations thereof, for example, glass.

The inverted structure perovskite solar cell 1 of the present invention can manufacture a flexible solar cell using a flexible substrate 100.

In one embodiment of the present invention, the first electrode 200 may be a front electrode, which is an electrode on the side to which light is received in the inverted structure perovskite solar cell 1, and is a front electrode commonly used in the solar cell field. It may contain substances.

The first electrode 200 may include a conductive transparent substrate. For example, the first electrode 200 is a group consisting of fluorine-containing tin oxide (FTO), indium-containing tin oxide (ITO), aluminum-containing zinc oxide (AZO), indium-containing zinc oxide (IZO), and combinations thereof It may include any one selected from, but is not limited thereto. When the first electrode 200 includes a conductive transparent substrate, transmission of light may be improved.

In one embodiment of the present invention, the hole transport layer 300 is poly(N,N-bis(4-butylphenyl)-N,N-bis(phenyl)benzidine, polythiophene derivative, diketopyrrolopyrrole derivative , Poly(thieno[3,4-b]thiophene-alt-benzodithiophene derivative, poly(phenylene vinylene) derivative, polycarbazole derivative, poly[bis(4-phenyl)(2,4) ,6-trimethylphenyl)amine, and may include any one selected from the group consisting of a combination thereof.

The thickness of the hole transport layer 300 may be 10 nm to 150 nm.

In an embodiment of the present invention, the perovskite photoactive layer 400 may serve as a photoelectric conversion layer that generates current by separating electrons and holes.

The perovskite photoactive layer 400 may include perovskite, and in the case of containing perovskite, the HOMO (highest occupied molecular orbital) level of the hole transport layer and the lower unoccupied molecular orbital (LUMO) level of the electron transport layer. Each of the orbital levels is well matched with the valence band and conduction band of the perovskite, so that electron transport and hole transport can be efficient.

In an embodiment of the present invention, the perovskite may be a compound represented by Formula 4 below.

[Formula 4]

ABX ₃

(At this time, A and B are cations, and X is an anion bonding to them.)

For example, A is an organic cation and an inorganic cation, for example, CH ₃ NH ₃ ⁺ , HC(NH ₂ ) ₂ ⁺ , CH(NH ₂ ) ₂ ⁺ , a monovalent organic cation such as GUA ⁺ , Ru ⁺ , K ⁺ , Li ⁺ , may include any one selected from the group consisting of monovalent inorganic cations and combinations thereof.

For example, M of the perovskite may include any one selected from the group consisting of a metal cation, for example, a divalent metal cation such as Pb ²⁺ and Sn ²⁺ , and combinations thereof.

For example, X in the perovskite is a halogen anion, for example, F ^- may include any one selected from the group consisting of combinations _{^{-, I -, Cl -,}} Br.

In Formula 4, the structure of the cation A is AX ₁₂ , the structure of the cation B is combined with 12 anions X to form a cubic octahedral structure, and the structure of the cation B is BX ₆ , forming an octahedral structure with 6 anions X.

The perovskite has a direct bandgap and has a high light absorption coefficient in the visible light region, so it can sufficiently absorb light even at a relatively thin thickness to generate a lot of charge, has excellent charge transfer characteristics, and is resistant to defects. You can have excellent tolerance for it.

The perovskite compound can form a light absorber forming a photoactive layer through a very simple, easy and inexpensive simple process of application and drying of a solution, and crystallization can occur spontaneously by drying the applied solution. .

In one embodiment of the present invention, the electron transport layer 500 is any one selected from the group consisting of fullerene, fullerene derivatives, phenyl-C ₆₁ -butyric acid methyl ester, phenyl-C ₇₀ -butyric acid methyl ester, and combinations thereof. Can include.

The thickness of the electron transport layer 500 may be 20 nm to 100 nm.

The protective layer 600 may include a benzotriazole compound represented by Formula 1:

[Formula 1]

(In Chemical Formula 1, L and R ₁ to R ₆ are as defined above.)

The protective layer 600 may include a benzotriazole compound represented by Formula 2 or Formula 3:

[Formula 2]

[Formula 3]

(In Formulas 2 and 3, L and R ₅ to R ₇ are as defined above.)

,

,

,

,

및

으로 구성된 군으로부터 선택되는 하나 이상의 벤조트리아졸 화합물을 포함 할 수 있다. The protective layer 600 is

,

,

,

,

And

It may contain one or more benzotriazole compounds selected from the group consisting of.

The thickness of the protective layer 600 may be 1 nm to 10 nm.

The protective layer 600 is a conjugated polymer electrolyte, for example, poly[(9,9-bis(3'-(N,N-dimethylamino)propyl)-2,7-fluorene)-alt-2 ,7-(9,9-dioctylfluorene)](PFN), poly[9,9-dioctyl-9',9'-bis[3-(trimethylammoniopropyl][2,2'- Bi-9H-fluorene]-7,7'-diyl iodide (PFN-I), poly[(2-methoxy)ethylglycidyl ether] (PMEGE), poly[bis-2-(2) -Methoxyethoxy)ethoxy))phosphagen] (MEEP) and any one selected from the group consisting of combinations thereof, for example, poly[(9,9-bis(3'-(N,N-)) Dimethylamino)propyl)-2,7-fluorene)-alt-2,7-(9,9-dioctylfluorene)](PFN) may be further included.

The benzotriazole compound contained in the protective layer 600 is 50% by weight to 100% by weight, for example, 90% to 100% by weight, for example, 100% by weight based on the total weight of the protective layer. Can be included.

The second electrode 700 may be a rear electrode, and may include a rear electrode material commonly used in the solar cell field.

The second electrode 700 may include a conductive polymer or a carbon-based metal.

The second electrode 700 may include a metal. For example, the metal is any one selected from the group consisting of lithium, magnesium, calcium, aluminum, copper, gold, silver, tungsten, nickel, zinc, barium, titanium, zirconium, cadmium, lead, cesium, and combinations thereof It may include, but is not limited thereto.

For example, an organic/inorganic hybrid perovskite solar cell is exposed to the air, and the air penetrates the electron transport layer 500 and reacts with the perovskite photoactive layer 400 to reduce the efficiency of the device. It can cause problems.

Inverted structure perovskite solar cell 1 of the present invention introduces a protective layer 600 between the electron transport layer 500 and the second electrode 700, so that the perovskite photoactive layer 400 and the air By blocking the reaction, high storage stability in air can be ensured.

One aspect of the present invention includes forming a first electrode and a hole transport layer on a substrate; Forming a perovskite light absorbing layer on the hole transport layer; Forming an electron transport layer on the perovskite light absorption layer; Forming a protective layer over the electron transport layer; And forming a second electrode on the protective layer. As a method of manufacturing an inverted structure perovskite solar cell comprising a, the protective layer provides a method of manufacturing an inverted structure perovskite solar cell comprising a benzotriazole compound represented by Formula 1 below:

[Formula 1]

(In Chemical Formula 1, L and R ₁ to R ₆ are as defined above.)

,

,

,

,

및

으로 구성된 군으로부터 선택되는 하나일 수 있다.In one embodiment of the present invention, the benzotriazole compound is

,

,

,

,

And

It may be one selected from the group consisting of.

In the present specification, "perovskite solar cell" refers to a solar cell using a perovskite material having excellent physical properties such as ferroelectric and superconducting phenomena as a photoactive layer of a solar cell.

The perovskite material is easy to adjust optical properties such as band gap in a desired direction by changing the composition of each material, and has a high light absorption coefficient in the visible light region, so it can sufficiently absorb light even at a relatively thin thickness to generate a lot of electric charge. I can.

In the present specification, the term "reverse structure perovskite solar cell" means that the electron transport layer is located on the transparent electrode based on the irradiation surface of sunlight, the perovskite layer is located on the electron transport layer, and the hole transport layer is located on the photoactive layer. Compared with a perovskite solar cell of a regular structure, a hole transport layer is located on the electrode based on the irradiation surface of sunlight, a perovskite layer is located on the hole transport layer, and an electron transport layer is located on the perovskite layer. It refers to a perovskite solar cell with a positioned shape.

The structured perovskite solar cell uses a metal oxide that requires high temperature firing of 400°C or higher in the electron transport layer, so it is difficult to mass-produce or manufacture a flexible device using a roll-to-roll process. On the other hand, the inverted structure perovskite solar cell is capable of a low temperature solution process and a flexible device can be manufactured.

Example

Preparation Example 1.2 H -Synthesis of benzotriazole

Benzene-1,2-diamine (5g, 46.236mmol) was dissolved in acetic acid (80mL) and stirred at room temperature. Sodium nitrite (3.84g, 55.539mmol) was dissolved in water (20mL) and slowly added to the reaction mixture, followed by stirring for 20 minutes. Then ethyl acetate was added.

Thereafter, the reaction mixture was washed three times with water as a post-treatment process, and then the residue obtained by vacuum distillation was separated through column chromatography to obtain a white solid compound (chemical compound b in Scheme 1, 4.8 g, 88%). Obtained:

¹ H NMR (300 MHz, CDCl ₃ ): δ (ppm) 7.97 (d, 2H, J = 5.8 Hz) 7.47 (d, 2H, J = 5.8 Hz); ¹³ C NMR (75 MHz, CDCl ₃ ):? (Ppm) 138.875, 126.145, 114.963; HRMS ( m/z , EI ⁺ ) calcd for C ₆ H ₅ N ₃ , 119.0483, found 119.0484.

Preparation Example 2. 2-(6-bromo-hexyl)-2 H -Synthesis of benzotriazole

2 H - benzotriazole (15.0g, 125.919mmol) a was dissolved in dimethylsulfoxide (200mL). Sodium hydroxide (25.2 g, 629.595 mmol) was added to the reaction mixture, and then tetrabutylammonium bromide was added in a catalytic amount. 1,6-dibromohexane (152.9g, 629.595mmol) was added to the reaction mixture, stirred for 12 hours in the presence of argon gas at 50°C, cooled to room temperature, and then chloroform was added.

Thereafter, the same post-treatment process as in Preparation Example 1 was performed to obtain a white oily compound (chemical c, 12.8g, 40% in Scheme 1):

¹ H NMR (300 MHz, CDCl ₃ ): δ (ppm) 7.87 (d, 2H, J = 7.0 Hz) 7.40 (d, 2H, J = 7.0 Hz) 4.75 (t, 2H, J = 7.05 Hz) 3.39 ( t, 2H, J = 6.45 Hz) 2.15 (q, 2H, J = 7.10 Hz) 1.85 (q, 2H, J = 7.10 Hz) 1.50 (q, 2H, J = 7.10 Hz) 1.40 (q, 2H, J = 6.50 Hz); ¹³ C NMR (75 MHz, CDCl ₃ ):? (Ppm) 144.098, 125.992, 117.812, 56.156, 33.516, 32.275, 29.625, 27.388, 25.535; HRMS ( m/z , EI ⁺ ) for C ₁₂ H ₁₆ BrN ₃ , 281.0528, found 281.0530.

Example 1. 6-(2 H -Synthesis of benzotriazol-2-yl)-N,N-dimethylhexan-1-amine

The compound (c, 1.4g, 4.961mmol) obtained in Preparation Example 2 was dissolved in tetrahydrofuran (15mL). Dimethylamine (15.1 mL, 30.279 mmol) was added to the reaction mixture at 50°C. The reaction mixture was stirred at room temperature under argon gas conditions for 4 days, sodium hydroxide (0.1M) was added, and ethyl acetate was added.

Thereafter, the same post-treatment process as in Preparation Example 1 was performed to obtain a colorless oily compound (chemical d in Scheme 1, 0.9 g, 99%):

¹ H NMR (300 MHz, CDCl ₃ ): δ (ppm) 7.87 (d, 2H, J = 6.50 Hz) 7.38 (d, 2H, J = 6.50 Hz) 4.73 (t, 2H, J = 7.35 Hz) 2.23 ( t, 2H, J = 7.10 Hz) 2.20 (s, 6H) 2.13 (q, 2H, J = 7.23 Hz) 1.47-1.38 (m, 6H); ¹³ C NMR (75 MHz, CDCl ₃ ): δ (ppm) 143.914, 125.655, 117.613, 59.174, 56.033, 45.065, 29.609, 27.097, 26.469, 26.132; HRMS ( m/z , EI ⁺ ) calcd for C ₁₄ H ₂₂ N ₄ , 246.1844, found 246.1843.

Manufacturing Example 3. 6-(2 H -Synthesis of benzotriazol-2yl)hexanal

Sodium hydrogen carbonate (10.8 g, 129.49 mmol) was dissolved in dimethyl sulfoxide (100 mL), and the compound (c, 6.3 g, 22.326 mmol) obtained in Preparation Example 2 was added under argon gas conditions at 120° C., and after 30 minutes After cooling to room temperature, ethyl acetate was added.

Thereafter, a post-treatment process as in Preparation Example 1 was performed to obtain a white oily compound (chemical e, 1.5g, 32% in Scheme 1):

¹ H NMR (300 MHz, CDCl ₃ ): δ (ppm) 9.75 (s, 1H) 7.87 (d, 2H, J = 6.50 Hz) 7.39 (d, 2H, J = 6.50 Hz) 4.75 (t, 2H, J = 7.05 Hz) 2.44 (t, 2H, J = 7.00 Hz) 2.15 (q, 2H, J = 7.60 Hz) 1.70 (q, 2H, J = 7.60 Hz) 1.38 (q, 2H, J = 7.60 Hz); ¹³ C NMR (75 MHz, CDCl ₃ ):? (Ppm) 201.312, 143.868, 125.701, 117.567, 55.696, 42.921, 29.257, 25.565, 20.924; ^{HRMS (m / z, EI +} ) calcd for C 12 H 15 N 3O, 217.1215, found 217.1217.

Example 2. 6-(2 H -Synthesis of benzotriazol-2-yl)-N-methylhexan-1-amine

The compound obtained in Preparation Example 3 was dissolved in ethanol (80 mL) together with methylamine, and then refluxed at 50° C. for 8 hours under argon gas conditions, and sodium borohydride was added. This was refluxed for 16 hours, then cooled to room temperature, and ethyl acetate was added.

Then, after a post-treatment step The reaction mixture was washed with water three times, the vacuum distillation and the residue was separated via column chromatography and a light yellow oil in the form of 6- (2 H - benzotriazol-2-yl) -N -Methylhexan-1-amine was obtained

Example 3. 6-(2 H -Synthesis of benzotriazol-2-yl)-N-methylhexan-1-amine

In Example 2, methylamine instead of ethane-l, 2-diamine, except for using the above-described embodiment 2, by performing the same procedure as a light yellow oil in the form of 6- (2 H - benzotriazol-2-yl )-N-methylhexan-1-amine was obtained.

Example 4. N ^One -[6-(2 H -Benzotriazol-2-yl)hexyl]-N ² -Synthesis of methylethane-1,2-diamine

In Example 2, N -methylethylenediamine was used instead of methylamine, except that compound (e), ethanol, and sodium borohydride were used at 1.21 g (5.523 mmol), 20 mL, and 1.25 g (33.034 mmol), respectively. And carrying out the same method as in Example 2, in the form of a light yellow oil, N ¹ -[6-(2 H -benzotriazol- ² -yl)hexyl]-N ² -methylethane-1,2-diamine ( 1.1 g, 72%) was obtained:

¹ H NMR (300 MHz, CD ₃ OD): δ (ppm) 7.87 (d, 2H, J = 6.50 Hz) 7.39 (d, 2H, J = 6.40 Hz) 4.74 (t, 2H, J = 7.05 Hz) 2.76 (t, 2H, J = 6.50 Hz) 2.39 (t, 2H, J = 6.40 Hz) 2.33 (t, 2H, J = 7.35 Hz) 2.20 (s, 3H) 2.13 (q, 2H, J = 7.05 Hz) 1.49 -1.38 (m, 6H); ¹³ C NMR (75 MHz, CDCl ₃ ): δ (ppm) 144.205, 126.222, 117.934, 60.062, 57.780, 56.570, 42.155, 39.321, 30.069, 27.021, 26.837, 26.484; HRMS ( m/z , FAB ⁺ ) calcd for C ₁₅ H ₂₅ N ₅ , 276.2188, found 276.2186.

Example 5. N ^One -(2-aminoethyl)-N ² -[6-(2 H -Synthesis of benzotriazol-2-yl)hexyl]ethane-1,2-diamine

In Example 2, diethylenetriamine (0.48mL, 4.60mmol) was used instead of methylamine, and 1g (4.60mmol), 10mL, 0.17g (4.60mmol) of compound (e), ethanol, and sodium borohydride were respectively used. N ¹ -(2-aminoethyl)-N ² -[6-(2 H -benzotriazol-2-yl) hexyl in the form of a light yellow oil was carried out in the same manner as in Example 2 above, except that it was used as ]Etein-1,2-diamine (0.5 g, 45%) was obtained:

¹ H NMR (300 MHz, CDCl ₃ ): δ (ppm) 7.55 (d, 2H, J = 7.10 Hz) 7.04 (d, 2H, J = 7.0 Hz) 4.40 (t, 2H, J = 6.75 Hz) 2.45- 2.33 (m, 6H) 2.23 (t, 2H, J = 6.15 Hz) 1.79-1.64 (m, 4H) 1.14-1.04 (m, 6H); ¹³ C NMR (75 MHz, CDCl ₃ ): δ (ppm) 143.930, 125.839, 117.628, 56.141, 52.035, 49.416, 49.125, 48.910, 41.374, 29.655, 29.502, 26.423, 26.117; HRMS ( m/z , FAB ⁺ ) calcd for C ₁₆ H ₂₈ N ₆ , 305.2454, found 305.2452.

Example 6. N ^One -[6-(2 H -Benzotriazol-2-yl)hexyl]-N ² -Synthesis of [2-(methylamino)ethyl]ethane-1,2-diamine

In Example 2, a light yellow oil form was carried out in the same manner as in Example 2, except that N ¹ -(2-aminoethyl)-N ² -methylethane-1,2-diamine was used instead of methylamine. N ¹ -[6-(2 H -benzotriazol-2-yl)hexyl]-N ² -[2-(methylamino)ethyl]ethane-1,2-diamine was obtained.

Example 7. N ^One -(2-aminoethyl)-N ² Synthesis of -(2-{[6-(2H-benzotriazol-2-yl)hexyl]amino}ethyl)ethane-1,2-diamine

In Example 2, the same method as in Example 2 was carried out except that N ¹ ,N ^1′ -(ethane-1,2-diyl)di(ethane-1,2-diamine) was used instead of methylamine. As a light yellow oil, N ¹ -(2-aminoethyl)-N ² -(2-{[6-(2H-benzotriazol-2-yl)hexyl]amino}ethyl)ethane-1,2-dia Min was obtained.

Example 8. N ^One -[6-(2 H -Benzotriazol-2-yl)hexyl]-N ² Synthesis of -(2-{[2-(methylamino)ethyl]amino}ethyl)ethane-1,2-diamine

In Example 2, the same as in Example 2 except that N ¹ -(2-aminoethyl)-N ² -[2-(methylamino)ethyl]ethane-1,2-diamine was used instead of methylamine. The method was carried out to form a light yellow oil N ¹ -[6-(2 H -benzotriazol-2-yl)hexyl]-N ² -(2-{[2-(methylamino)ethyl]amino}ethyl) Etain-1,2-diamine was obtained.

Example 9. N ^One -[6-(2 H -Synthesis of benzotriazol-2-yl)hexyl]-3,6,9,12-tetraazatetradecane-1,14-diamine

In Example 2, 3,6,9,12-tetraazatetradecane-1,14-diamine (0.69 mL, 2.82 mmol) was used instead of methylamine, and compound (e), ethanol, sodium borohydride N ¹ -[6-(2 H -benzotriazole in the form of a light yellow oil was carried out in the same manner as in Example 2 above, except that 1.02 g (4.69 mmol), 10 mL, and 0.18 g (4.69 mmol) were used, respectively. -2-yl)hexyl]-3,6,9,12-tetraazatetradecane-1,14-diamine (0.4 g) was obtained:

¹ H NMR (300 MHz, CDCl ₃ ): δ (ppm) 7.87 (d, 2H, J = 6.40 Hz) 7.38 (d, 2H, J = 6.50 Hz) 4.73 (t, 2H, J = 7.00 Hz) 2.90- 2.85 (m, 4H) 2.80-2.65 (m, 6H) 2.62-2.55 (m, 4H) 2.53-2.40 (m, 8H) 2.15-2.05 (m, 2H) 1.55-1.45 (m, 2H) 1.43-1.30 ( m, 4H)

Example 10. N ^One -[6-(2 H -Benzotriazol-2-yl)hexyl]-N ¹⁴ -Synthesis of methyl-3,6,9,12-tetraazatetradecane-1,14-diamine

In Example 2, in place of methylamine, N ¹ -methyl-3,6,9,12-tetraazatetradecane-1,14-diamine was used in the same manner as in Example 2, N ¹ -[6-(2 H -benzotriazol-2-yl)hexyl]-N ¹⁴ -methyl-3,6,9,12-tetraazatetradecane-1,14-diamine as a yellow oil Was obtained.

Example 11.N ^One ,N ^One -Bis(2-aminoethyl)-N ² -[6-(2 H -Synthesis of benzotriazol-2-yl)hexyl]ethane-1,2-amine

In Example 2, tris (2-aminoethyl) amine (2.54 mL, 16.97 mmol) was used instead of methylamine, and compound (e), ethanol, and sodium borohydride were each 3 g, except that it was carried out under the following conditions. (11.31mmol), 80mL, 0.248g ( 11.31mmol) , and the second embodiment the same way performed by a light yellow oil in the form of N ^1, N ¹ with the exception that the bis (2-aminoethyl) -N ² - a - [6- (2 H-benzotriazol-2-yl) cyclohexyl] ethane-l, 2-amine (1.21g, 71%) was obtained:

¹ H NMR (300 MHz, CDCl ₃ ): δ (ppm) 7.86 (d, 2H, J = 6.40 Hz) 7.38 (d, 2H, J = 6.50 Hz) 4.72 (t, 2H, J = 6.50 Hz) 2.74 ( t, 2H, J = 5.30 Hz) 2.65-2.60 (m, 4H) 2.58-2.50 (m, 4H) 2.20-2.10 (m, 2H) 1.80-1.65 (m, 4H) 1.55-1.45 (m, 2H) 1.40 -1.30 (m, 4H)

Example 12. N ² -(2-aminoethyl)-N ^One -{2-[(2-aminoethyl)amino]ethyl}-N ^One -{2-[(2-{[6-(2 H Synthesis of -benzotriazol-2-yl)hexyl]amino}ethyl)amino]ethyl}ethane-1,2-diamine

In Example 2, N ² -(2-aminoethyl)-N ¹ ,N ¹ -bis{2-[(2-aminoethyl)amino]ethyl}ethane-1,2-diamine was used instead of methylamine. N ² -(2-aminoethyl)-N ¹ -{2-[(2-aminoethyl)amino]ethyl}-N ¹ -{ in the form of a light yellow oil by performing the same method as in Example 2 above. 2-a [(2 - {[6- (2 H-benzotriazol-2-yl) hexyl] amino} ethyl) amino] ethyl} ethane-l, 2-diamine was obtained.

Preparation Example 4. 4,7-dibromo-2-(6-bromohexyl)-2 H -Synthesis of benzotriazole (compound h)

4,7-dibromo-2 H -benzotriazole (11.5g, 41.53mmol) was dissolved in dimethyl sulfoxide (80mL). After sodium hydroxide (8.3 g, 207.64 mmol) was added to the reaction mixture, tetrabutylammonium bromide was added in a catalytic amount. After 1,6-dibromohexane (31.7 mL, 207.64 mmol) was added to the reaction mixture, the mixture was stirred at 50° C. under argon gas conditions for 12 hours. After cooling to room temperature, chloroform was added.

Thereafter, the same post-treatment process as in Preparation Example 1 was performed to obtain a white oily compound (compound h in Scheme 2, 7.8g):

¹ H NMR (300 MHz, CDCl ₃ ): δ (ppm) 7.46 (s, 2H) 4.80 (t, 2H, J = 7.6 Hz) 3.40 (t, 2H, J = 7.0 Hz) 2.17 (q, 2H, J = 7.7 Hz) 1.87 (q, 2H, J = 7.6 Hz) 1.55-1.45 (m, 2H) 1.43-1.35 (m, 2H); ¹³ C NMR (75 MHz, CDCl ₃ ):? (Ppm) 143.72, 129.64, 109.95, 57.24, 33.68, 32.35, 30.02, 27.53, 25.69; HRMS ( m/z , EI ⁺ ) for C ₁₂ H ₁₄ Br ₃ N ₃ , 436.8738, found 436.8736.

Preparation Example 5. 2-(6-bromohexyl)-4,7-bis(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-2 H -Synthesis of benzotriazole (compound i)

The compound (h, 7.7g, 27.81mmol) obtained in Preparation Example 4, bis (pinacolato) diboron (21.1g, 83.43mmol), potassium acetate (11g, 111.23mmol) and 1,1'-bis ( Diphenylphosphino)ferrocene)palladium dichloride (0.91g, 1.11mmol) was stirred in 1,4-dioxane (140mL). After refluxing at 100° C. under argon gas conditions for 12 hours, the mixture was cooled to room temperature, and ethyl acetate was added.

Thereafter, a post-treatment process as in Preparation Example 1 was performed to obtain a yellow oily compound i (5.0 g):

¹ H NMR (300 MHz, CDCl ₃ ): δ (ppm) 7.88 (s, 2H) 4.82 (t, 2H, J = 7.6 Hz) 3.42 (t, 2H, J = 7.0 Hz) 2.17 (q, 2H, J = 7.0 Hz) 1.89 (q, 2H, J = 7.0 Hz) 1.60-1.50 (m, 4H) 1.43 (s, 24H); ¹³ C NMR (75 MHz, CDCl ₃ ): δ (ppm) 146.32, 134.22, 84.14, 56.34, 33.81, 32.54, 29.76, 27.62, 25.79, 24.91; HRMS ( m/z , EI ⁺ ) for C ₂₄ H ₃₈ B ₂ BrN ₃ O ₄ , 533.2242, found 533.2230.

Preparation Example 6. 2-(6-bromohexyl)-4,7-diphenyl-2 H -Synthesis of benzotriazole (compound j)

Compound h (2.0g, 4.50mmol) obtained in Preparation Example 4 and 4,4,5,5-tetramethyl-2-phenyl-1,3,2-dioxaborolane (2.8g, 13.64mmol) and carbonic acid Potassium (2.3g, 16.82mmol) and tetrakis (triphenylphosphine) palladium (0.21g, 0.18mmol) were stirred in water (20mL) and tetrahydrofuran (40mL). After refluxing at 100° C. under argon gas conditions for 12 hours, the mixture was cooled to room temperature, and ether was added.

Thereafter, a post-treatment process as in Preparation Example 1 was performed to obtain a yellow oily compound (compound j of Scheme 2, 1.0g):

¹ H NMR (300 MHz, CDCl ₃ ): δ (ppm) 8.10 (d, 4H, J = 7.1 Hz) 7.67 (s, 2H) 7.57 (t, 4H, J = 7.1 Hz) 7.45 (t, 2H, J = 7.1 Hz) 4.82 (t, 2H, J = 7.1 Hz) 3.41 (t, 2H, J = 7.1 Hz) 2.20 (q, 2H, J = 7.1 Hz) 1.88 (q, 2H, J = 7.1 Hz) 1.60- 1.50 (m, 2H) 1.45-1.35 (m, 2H); HRMS ( m/z , EI ⁺ ) for C ₂₄ H ₂₄ BrN ₃ , 433.1154, found 433.1152.

Preparation Example 7. 6-(4,7-diphenyl-2 H -Synthesis of benzotriazol-2-yl)hexanal (compound k)

Sodium hydrogen carbonate (2.23 g, 26.48 mmol) was dissolved in dimethyl sulfoxide (50 mL), and the compound (j, 4.6 g, 10.59 mmol) obtained in Preparation Example 6 was added under argon gas conditions at 120°C. After 30 minutes, it was cooled to room temperature, and ethyl acetate was added.

Thereafter, a post-treatment process as in Preparation Example 1 was performed to obtain a white oily compound (compound k in Scheme 2, 1.5 g):

¹ H NMR (300 MHz, CDCl ₃ ): δ (ppm) 9.78 (s, 1H) 8.11 (d, 4H, J = 7.1 Hz) 7.67 (s, 2H) 7.58 (t, 4H, J = 7.0 Hz) 7.46 (t, 2H, J = 7.1 Hz) 4.82 (t, 2H, J = 7.1 Hz) 2.44 (t, 2H, J = 7.1 Hz) 2.19 (q, 2H, J = 7.1 Hz) 1.72 (q, 2H, J = 7.0 Hz) 1.50-1.40 (m, 2H); ¹³ C NMR (75 MHz, CDCl ₃ ): δ (ppm) 202.42, 143.50, 137.33, 130.24, 128.75, 128.59, 128.03, 124.77, 56.43, 43.67, 29.99, 26.10, 21.46; HRMS ( m/z , FAB ⁺ ) for C ₂₄ H ₂₃ N ₃ O, 370.1919, found 370.1917.

Example 13. N ^One -(2-aminoethyl)-N ² -[6-(4,7-diphenyl-2 H -Synthesis of benzotriazol-2-yl)hexyl]ethane-1,2-diamine

The compound (k, 1.20g, 3.25mmol) obtained in Preparation Example 7 was dissolved in ethanol (20mL) together with diethylenetriamine (2.05mL, 19.5mmol). After refluxing at 50° C. for 8 hours under argon gas conditions, sodium borohydride (1.11 g, 29.25 mmol) was added. After refluxing for 16 hours, it was cooled to room temperature, and ethyl acetate was added. The reaction mixture was washed 3 times with water. The vacuum distilled residue was separated through column chromatography and N ¹ -(2-aminoethyl)-N ² -[6-(4,7-diphenyl-2 H -benzotriazole- ² ) as a light yellow oil. -Yl)hexyl]ethane-1,2-diamine (1.1 g) was obtained:

¹ H NMR (300 MHz, CDCl ₃ ): δ (ppm) 8.07 (d, 4H, J = 8.2 Hz) 7.65 (s, 2H) 7.54 (t, 4H, J = 7.6 Hz) 7.42 (t, 2H, J = 7.6 Hz) 4.79 (t, 2H, J = 7.0 Hz) 2.79 (t, 2H, J = 5.3 Hz) 2.75-2.65 (m, 4H) 2.59 (t, 2H, J = 7.0 Hz) 2.20-2.05 (m , 2H) 2.00-1.80 (m, 4H) 1.55-1.30 (m, 4H); ¹³ C NMR (75 MHz, CDCl ₃ ): δ (ppm) 143.47, 137.37, 130.22, 128.70, 128.59, 127.97, 124.66, 56.69, 52.40, 49.81, 49.49, 49.23, 41.73, 30.18, 29.89, 26.82, 26.53; HRMS ( m/z , FAB ⁺ ) for C ₂₈ H ₃₆ N ₆ , 457.3085, found 457.3075.

Example 14. N ^One ,N ^One -Bis(2-aminoethyl)-N ² -[6-(4,7-diphenyl-2 H -Synthesis of benzotrizol-2-yl)hexyl]ethane-1,2-diamine

In Example 13, a bright yellow color was performed in the same manner as in Example 13, except that N ¹ -(2-aminoethyl)-N ² -methylethane-1,2-diamine was used instead of diethylenetriamine. N ¹ ,N ¹ -bis(2-aminoethyl)-N ² -[6-(4,7-diphenyl-2 H -benzotrizol-2-yl)hexyl]ethane-1,2- in oil form Diamine was obtained.

Production Example 8. 2-(6-bromohexyl)-4,7-bis(3,5-difluorophenyl)-2 H -Synthesis of benzotriazole (compound m)

Compound h (7.8g, 17.73mmol) and 2-(3,5-difluorophenyl)-4,4,5,5-tetramethyl-1,3,2-dioxaborolane obtained in Preparation Example 4 (12.8g, 53.19mmol), potassium carbonate (9.8g, 70.92mmol) and tetrakis (triphenylphosphine) palladium (0.82g, 0.71mmol) were stirred with a mixture of water (20mL) and tetrahydrofuran (40mL). . After refluxing at 100° C. under argon gas conditions for 12 hours, the mixture was cooled to room temperature, and ether was added.

Thereafter, a post-treatment process as in Preparation Example 1 was performed to obtain a yellow oily compound m (5.0 g):

¹ H NMR (300 MHz, CDCl ₃ ): δ (ppm) 7.70-7.62 (m, 6H) 6.96-6.84 (m, 2H) 4.84 (t, 2H, J = 7.1 Hz) 3.42 (t, 2H, J = 7.0 Hz) 2.21 (q, 2H, J = 7.0 Hz) 1.89 (q, 2H, J = 7.0 Hz) 1.60-1.52 (m, 2H) 1.50-1.42 (m, 2H); ¹³ C NMR (75 MHz, CDCl ₃ ): δ (ppm) 164.80, 161.50, 143.07, 139.98, 128.83, 124.64, 111.55, 111.19, 103.43, 56.75, 33.50, 32.46, 29.87, 27.53, 25.76; HRMS ( m/z , EI ⁺ ) for C ₂₄ H ₂₀ BrF ₄ N ₃ , 505.0777, found 505.0775.

Preparation Example 9. 6-[4,7-bis(3,5-difluorophenyl)-2 H -Synthesis of benzotriazol-2-yl]hexanal (compound n)

Sodium hydrogen carbonate (1.34 g, 15.95 mmol) was dissolved in dimethyl sulfoxide (50 mL), and compound m (3.23 g, 6.38 mmol) obtained in Preparation Example 8 was added under argon gas conditions at 120°C. After 30 minutes, it was cooled to room temperature, and ethyl acetate was added.

Thereafter, the same post-treatment process as in Preparation Example 1 was performed to obtain a white oily compound (compound n in Scheme 2, 1.0g):

¹ H NMR (300 MHz, CDCl ₃ ): δ (ppm) 9.78 (s, 1H) 7.70-7.60 (m, 6H) 6.95-6.85 (m, 2H) 4.84 (t, 2H, J = 7.0 Hz) 2.50 ( t, 2H, J = 7.6 Hz) 2.22 (q, 2H, J = 7.6 Hz) 1.75 (q, 2H, J = 7.7 Hz) 1.55-1.40 (m, 2H); ¹³ C NMR (75 MHz, CDCl ₃ ): δ (ppm) 202.19, 164.70, 161.50, 143.01, 139.78, 128.73, 124.66, 111.52, 111.18, 103.44, 56.62, 43.59, 29.87, 26.09, 21.37.

Example 15. N ^One -(2-aminoethyl)-N ² -(6-[4,7-bis(3,5-difluorophenyl)-2 H Synthesis of -benzotriazol-2-yl]hexyl}ethane-1,2-diamine

Compound n ((1.10g, 2.49mmol) obtained in Preparation Example 9 was dissolved in ethanol (20mL) together with diethylenetriamine (1.6mL, 14.95mmol), and refluxed at 50°C for 8 hours in the presence of argon gas. Sodium borohydride (0.85g, 22.43mmol) was added, refluxed for 16 hours, cooled to room temperature, ethyl acetate was added, the reaction mixture was washed 3 times with water, and the residue obtained by vacuum distillation was separated through column chromatography. As a light yellow oily N ¹ -(2-aminoethyl)-N ² -{6-[4,7-bis(3,5-difluorophenyl)-2 H -benzotriazol-2-yl] Hexyl}ethane-1,2-diamine (1.0 g) was obtained:

¹ H NMR (300 MHz, CDCl ₃ ): δ (ppm) 7.70-7.60 (m, 6H) 6.92-6.82 (m, 2H) 4.82 (t, 2H, J = 7.1 Hz) 2.81 (t, 2H, J = 5.9 Hz) 2.75-2.65 (m, 4H) 2.62 (t, 2H, J = 7.1 Hz) 2.20-2.10 (m, 2H) 2.05-1.85 (m, 4H) 1.55-1.40 (m, 4H); ¹³ C NMR (75 MHz, CDCl ₃ ): δ (ppm) 164.80, 161.50, 143.04, 139.87, 128.83, 124.66, 111.58, 111.23, 103.46, 56.92, 52.45, 49.83, 49.51, 49.26, 41.76, 30.12, 29.93, 26.78 , 26.52; HRMS ( m/z , FAB ⁺ ) for C ₂₈ H ₃₂ F ₄ N ₆ , 529.2703, found 529.2706.

Example 16. N ^One ,N ^One -Bis(2-aminoethyl)-N ² -(6-[4,7-bis(3,5-difluorophenyl)-2 H Synthesis of -benzotriazol-2-yl]hexyl}ethane-1,2-diamine

In Example 15, a bright yellow color was performed in the same manner as in Example 15, except that N ¹ -(2-aminoethyl)-N ² -methylethane-1,2-diamine was used instead of diethylenetriamine. N ¹ ,N ¹ -bis(2-aminoethyl)-N ² -(6-[4,7-bis(3,5-difluorophenyl)-2 H -benzotriazol-2-yl in oil form ]Hexyl}ethane-1,2-diamine was obtained.

Preparation Example 10. 2-(6-bromohexyl)-4,7-bis(2,3,5,6-tetrafluorophenyl)-2 H -Synthesis of benzotriazole (compound p)

Compound i (4.0 g, 10.78 mmol) obtained in Preparation Example 5, 3-bromo-1,2,4,5-tetrafluorobenzene (3.93 mL, 32.34 mmol) and potassium carbonate (5.96 g, 43.12 mmol) ) And tetrakis (triphenylphosphine) palladium (0.50 g, 0.43 mmol) were stirred with a mixture of water (20 mL) and tetrahydrofuran (40 mL). After refluxing at 100° C. under argon gas conditions for 12 hours, the mixture was cooled to room temperature, and ether was added.

Thereafter, a post-treatment process as in Preparation Example 1 was performed to obtain a yellow oily compound (compound p in Scheme 2, 3.0 g):

¹ H NMR (300 MHz, CDCl ₃ ): δ (ppm) 7.57 (s, 2H) 7.21 (t, 2H, J = 7.6 Hz) 4.74 (t, 2H, J = 7.0 Hz) 3.38 (t, 2H, J = 7.0 Hz) 2.10 (q, 2H, J = 7.0 Hz) 1.84 (q, 2H, J = 7.0 Hz) 1.55-1.45 (m, 2H) 1.40-1.30 (m, 2H); ¹³ C NMR (75 MHz, CDCl ₃ ): δ (ppm) 147.85, 145.75, 144.57, 142.46, 142.96, 128.05, 119.11, 117.3, 106.11, 56.85, 33.55, 32.38, 29.89, 27.40, 25.50; HRMS ( m/z , EI ⁺ ) for C ₂₄ H ₁₆ BrF ₈ N ₃ , 577.0400, found 577.0398.

Preparation Example 11. 6-[4,7-bis(2,3,5,6-tetrafluorophenyl)-2 H -Synthesis of benzotriazol-2-yl]hexanal (Compound q)

Sodium hydrogen carbonate (0.15 g, 1.73 mmol) was dissolved in dimethyl sulfoxide (50 mL), and the compound (p, 0.40 g, 0.69 mmol) obtained in Preparation Example 10 was added under argon gas conditions at 120°C. After 30 minutes, it was cooled to room temperature, and ethyl acetate was added.

Thereafter, a post-treatment process as in Preparation Example 1 was performed to obtain a white oily compound (compound q in Scheme 2, 0.1 g):

¹ H NMR (300 MHz, CDCl ₃ ): δ (ppm) 9.75 (s, 1H) 7.57 (s, 2H) 7.22 (t, 2H, J = 7.6 Hz) 4.75 (t, 2H, J = 7.0 Hz) 2.44 (t, 2H, J = 7.0 Hz) 2.12 (q, 2H, J = 7.0 Hz) 1.68 (q, 2H, J = 7.6 Hz) 1.45-1.35 (m, 2H); ¹³ C NMR (75 MHz, CDCl ₃ ): δ (ppm) 202.20, 147.84, 145.66, 144.56, 142.93, 142.49, 128.08, 119.09, 117.09, 106.14, 56.68, 43.52, 29.79, 25.83, 21.25; HRMS ( m/z , EI ⁺ ) for C ₂₄ H ₁₅ F ₈ N ₃ O, 513.1087, found 513.1084.

Example 17. N ^One -(2-aminoethyl)-N ² -(6-[4,7-bis(2,3,5,6-tetrafluorophenyl)-2 H Synthesis of -benzotriazol-2-yl]hexyl}ethane-1,2-diamine

The compound (q, 1.00 g, 1.95 mmol) obtained in Preparation Example 11 was dissolved in ethanol (20 mL) together with diethylenetriamine (1.23 mL, 11.7 mmol), refluxed at 50° C. for 8 hours in the presence of argon gas, followed by hydrogenation. Sodium boron (0.70g, 17.55mmol) was added, the mixture was refluxed for 16 hours, cooled to room temperature, ethyl acetate was added, the reaction mixture was washed 3 times with water, and the residue obtained by vacuum distillation was separated through column chromatography. Light yellow oily N ¹ -(2-aminoethyl)-N ² -(6-[4,7-bis(2,3,5,6-tetrafluorophenyl)-2 H -benzotriazole-2 -Yl]hexyl}ethane-1,2-diamine (0.8 g) was obtained:

¹ H NMR (300 MHz, CDCl ₃ ): δ (ppm) 7.55 (s, 2H) 7.20 (t, 2H, J = 7.6 Hz) 4.72 (t, 2H, J = 7.0 Hz) 2.79 (t, 2H, J = 5.3 Hz) 2.70-2.60 (m, 4H) 2.57 (t, 2H, J = 6.5 Hz) 2.10-2.00 (m, 2H) 1.55-1.30 (m, 8H); ¹³ C NMR (75 MHz, CDCl ₃ ): δ (ppm) 147.84, 145.79, 144.56, 142.92, 142.51, 127.98, 119.08, 117.14, 106.12, 57.03, 52.37, 49.74, 49.45, 49.20, 41.71, 30.10, 29.78, 26.67 , 26.27; HRMS ( m/z , FAB ⁺ ) for C ₂₈ H ₂₈ F ₈ N ₆ , 601.2326, found 601.2323.

Example 18. N ^One ,N ^One -Bis(2-aminoethyl)-N ² -(6-[4,7-bis(2,3,5,6-tetrafluorophenyl)-2 H Synthesis of -benzotriazol-2-yl]hexyl}ethane-1,2-diamine

In Example 17, a bright yellow color was performed in the same manner as in Example 17, except that N ¹ -(2-aminoethyl)-N ² -methylethane-1,2-diamine was used instead of diethylenetriamine. N ¹ ,N ¹ -bis(2-aminoethyl)-N ² -(6-[4,7-bis(2,3,5,6-tetrafluorophenyl)-2 H -benzotriazole in oil form -2-yl]hexyl}ethane-1,2-diamine was obtained.

Example A. Preparation of inverted structure perovskite solar cell

A hole transport layer was formed by spin coating a poly[bis(4-phenyl)(2,4,6-trimethylphenyl)amine (PTAA) solution at 5000 rpm on the UV-ozone-treated ITO/Glass substrate, and then on the hole transport layer. Poly[(9,9-bis(3'-(N,N-dimethylamino)propyl)-2,7-fluorene)-alt-2,7-(9,9-dioctylfluorene)]( PFN) solution was spin-coated at 5000 rpm to form an amphiphilic polymer layer.

A mixed solution of perovskite (methylammonium lead iodide (MAPbI ₃ )) was spin-coated on the amphiphilic polymer layer at 5000 rpm for 30 seconds, and a diethyl ether (DEE) solvent was applied on the film while spin coating. After coating to induce crystallization of the perovskite thin film to form a photoactive layer, the formed photoactive layer was heated at 100° C. for 10 minutes to induce strong crystallization of the perovskite thin film.

On the photoactive layer, a solution in which phenyl-C ₆₁ -methyl butyrate (PC ₆₁ BM) was dissolved in a chlorobenzene solvent at a concentration of 40 mg/ml was spin-coated at 1500 rpm for 30 seconds to form an electron transport layer.

A protective layer was formed by mixing 1 mg to 40 mg of the benzotriazole compound prepared in Example 1 on the electron transport layer using a solvent of 1000 mg methanol, and then coating and drying at 5000 pm.

An inverted structure perovskite solar cell was manufactured by depositing a copper electrode on the protective layer by a thermal process under high vacuum conditions.

Examples B to F. Preparation of inverted structure perovskite solar cell

In Example 19, an inverted structure perovskite solar cell was prepared in the same manner as in Example 19, except that the compounds of Examples 4, 5, 13, 15, and 17 were used as the benzotriazole compounds, respectively. Was prepared.

Comparative Example A. Fabrication of reverse structure perovskite solar cell

In Example 19, an inverted structure perovskite solar cell was manufactured by performing the same method as in Example 19, except that the protective layer was not included.

Experimental Example 1. Evaluation of solar cell performance

To evaluate the performance of the solar cell, the inverted structure perovskite solar cells prepared in Examples 19 to 24 and Comparative Example 1 were subjected to standard solar irradiation conditions (irradiation intensity 100mW/cm ² ; atmospheric mass index 1.5G spectrum) The current density-voltage characteristics were measured and the results are shown in FIG. 2 and Table 1 below.

As a result of the experiment, it was confirmed that the performance of the inverted structure perovskite solar cell with a protective layer was improved:

[Table 1]

Experimental Example 2. Stability evaluation of solar cell

In order to evaluate the stability of the inverted structure perovskite solar cell, the inverted structure perovskite solar cell prepared in Examples 19 to 24 and Comparative Example 1 was stored in a state exposed to air without exposure to sunlight. And, the performance of the solar cell was periodically measured.

As a result of the experiment, in the case of Examples 19 to 24, it was confirmed that the performance of the solar cell was maintained within 90% of the initial efficiency even after 1200 hours, and in the case of Comparative Example 1, the solar cell at a level of 80% of the initial efficiency within 400 hours. It was confirmed that the performance of was decreased (FIG. 3).

The above description of the present invention is for illustrative purposes only, and those of ordinary skill in the art to which the present invention pertains will be able to understand that other specific forms can be easily modified without changing the technical spirit or essential features of the present invention will be. Therefore, it should be understood that the embodiments described above are illustrative in all respects and not limiting. For example, each component described as a single type may be implemented in a distributed manner, and similarly, components described as being distributed may also be implemented in a combined form.

The scope of the present invention is indicated by the claims to be described later, and all changes or modified forms derived from the meaning and scope of the claims and their equivalent concepts should be interpreted as being included in the scope of the present invention.

Claims (13)

Benzotriazole compound represented by the following formula (1):
[Formula 1]

(In Formula 1,
R ₁ to R ₄ may be the same or different, hydrogen, C ₁ to C ₁₀ alkyl, halogen, allyl, unsubstituted or substituted C ₆ to C ₂₀ aryl, unsubstituted or substituted N, O, P or Containing 1 to 4 hetero atoms selected from S, and the remaining ring atoms are C ₁ to C ₂₀ heteroaryl;
The substituted aryl or substituted heteroaryl is independently hydroxy, amine, nitro, cyano, halogen, allyl, unsubstituted or substituted C ₁ to C ₅ alkyl and unsubstituted or substituted C ₁ to C Aryl or heteroaryl substituted with one or more substituents selected from the group consisting of ₅ alkoxy;
L is C ₁ to C ₃₀ alkyl;
R ₅ is hydrogen, halogen or C ₁ to C ₁₀ alkyl;
R ₆ is hydrogen, C ₁ to C ₁₀ alkyl,

,

,

or

ego,
Here, X ₁ and X ₂ are independently hydrogen or C ₁ to C ₁₀ alkyl, and n is an integer of 1 to 20.) The method of claim 1,
The benzotriazole compound is a benzotriazole compound, characterized in that the compound represented by the following formula (2) or (3):
[Formula 2]

[Formula 3]

(In Formulas 2 and 3, the definitions of L, R ₅ and R ₆ are the same as those defined in Formula 1,
R ₇ is a group consisting of hydrogen, hydroxy, amine, nitro, cyano, halogen, allyl, unsubstituted or substituted C ₁ to C ₅ alkyl, and unsubstituted or substituted C ₁ to C ₅ alkoxy It is one or more substituents selected from.) The method of claim 1,
The benzotriazole compound is

,

,

,

,

And

Benzotriazole compound, characterized in that at least one selected from the group consisting of. A substrate, a first electrode, a hole transport layer, a perovskite photoactive layer, an electron transport layer, a protective layer, and a second electrode are sequentially stacked and formed,
The protective layer is an inverted structure perovskite solar cell comprising a benzotriazole compound represented by the following Chemical Formula 1:
[Formula 1]

(In Formula 1,
R ₁ to R ₄ may be the same or different, hydrogen, C ₁ to C ₁₀ alkyl, halogen, allyl, unsubstituted or substituted C ₆ to C ₂₀ aryl, unsubstituted or substituted N, O, P or Containing 1 to 4 hetero atoms selected from S, and the remaining ring atoms are C ₁ to C ₂₀ heteroaryl;
The substituted aryl or substituted heteroaryl is independently hydroxy, amine, nitro, cyano, halogen, allyl, unsubstituted or substituted C ₁ to C ₅ alkyl and unsubstituted or substituted C ₁ to C Aryl or heteroaryl substituted with one or more substituents selected from the group consisting of ₅ alkoxy;
L is C ₁ to C ₃₀ alkyl;
R ₅ is hydrogen, halogen or C ₁ to C ₁₀ alkyl;
R ₆ is hydrogen, C ₁ to C ₁₀ alkyl,

,

,

or

ego,
Here, X ₁ and X ₂ are independently hydrogen or C ₁ to C ₁₀ alkyl, and n is an integer of 1 to 20.) The method of claim 4,
The benzotriazole compound is an inverted structure perovskite solar cell, characterized in that the compound represented by the following formula (2) or (3):
[Formula 2]

[Formula 3]

(In Formulas 2 and 3, the definitions of L, R ₅ and R ₆ are the same as those defined in Formula 1,
R ₇ is a group consisting of hydrogen, hydroxy, amine, nitro, cyano, halogen, allyl, unsubstituted or substituted C ₁ to C ₅ alkyl, and unsubstituted or substituted C ₁ to C ₅ alkoxy It is one or more substituents selected from.) The method of claim 4,
The benzotriazole compound is

,

,

,

,

And

Inverted structure perovskite solar cell, characterized in that at least one selected from the group consisting of. The method of claim 4,
Inverted structure perovskite solar cell, characterized in that the thickness of the protective layer is 1nm to 10nm. The method of claim 4,
The protective layer inverted structure perovskite solar cell, characterized in that it further comprises a conjugated polymer electrolyte. The method of claim 4,
The benzotriazole compound is an inverted structure perovskite solar cell, characterized in that contained in an amount of 50% to 100% by weight based on the total weight of the protective layer. The method of claim 4,
The hole transport layer is poly(N,N-bis(4-butylphenyl)-N,N-bis(phenyl)benzidine, polythiophene derivative, diketopyrrolopyrrole derivative, poly(thieno[3,4- b]thiophene-alt-benzodithiophene derivative, poly(phenylene vinylene) derivative, polycarbazole derivative, poly[bis(4-phenyl)(2,4,6-trimethylphenyl)amine, poly(tri Inverted structure perovskite solar cell comprising any one selected from the group consisting of aryl amine) and combinations thereof. The method of claim 4,
The electron transport layer is an inverted structure perovskite, characterized in that it comprises any one selected from the group consisting of fullerene, fullerene derivative, phenyl-C ₆₁ -methyl butyrate, phenyl-C ₇₀ -methyl butyrate, and combinations thereof. Solar cell. Forming a first electrode and a hole transport layer on the substrate;
Forming a perovskite light absorbing layer on the hole transport layer;
Forming an electron transport layer on the perovskite light absorption layer;
Forming a protective layer over the electron transport layer; And
Forming a second electrode on the protective layer;
Including, and the protective layer is a method of manufacturing an inverted structure perovskite solar cell comprising a benzotriazole compound represented by the following Formula 1:
[Formula 1]

(In Formula 1,
R ₁ to R ₄ may be the same or different, hydrogen, C ₁ to C ₁₀ alkyl, halogen, allyl, unsubstituted or substituted C ₆ to C ₂₀ aryl, unsubstituted or substituted N, O, P or Containing 1 to 4 hetero atoms selected from S, and the remaining ring atoms are C ₁ to C ₂₀ heteroaryl;
The substituted aryl or substituted heteroaryl is independently hydroxy, amine, nitro, cyano, halogen, allyl, unsubstituted or substituted C ₁ to C ₅ alkyl and unsubstituted or substituted C ₁ to C Aryl or heteroaryl substituted with one or more substituents selected from the group consisting of ₅ alkoxy;
L is C ₁ to C ₃₀ alkyl;
R ₅ is hydrogen, halogen or C ₁ to C ₁₀ alkyl;
R ₆ is hydrogen, C ₁ to C ₁₀ alkyl,

,

,

or

ego,
Here, X ₁ and X ₂ are independently hydrogen or C ₁ to C ₁₀ alkyl, and n is an integer of 1 to 20.) The method of claim 12,
The benzotriazole compound is

,

,

,

,

And

Method of manufacturing an inverted structure perovskite solar cell, characterized in that at least one selected from the group consisting of.

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