CN112920207A - Europium luminescent material and preparation method thereof - Google Patents

Europium luminescent material and preparation method thereof Download PDF

Info

Publication number
CN112920207A
CN112920207A CN202110168013.XA CN202110168013A CN112920207A CN 112920207 A CN112920207 A CN 112920207A CN 202110168013 A CN202110168013 A CN 202110168013A CN 112920207 A CN112920207 A CN 112920207A
Authority
CN
China
Prior art keywords
europium
luminescent material
dimethyl
butanedione
trifluoro
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN202110168013.XA
Other languages
Chinese (zh)
Inventor
刘姗姗
刘斌
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Beijing Institute of Petrochemical Technology
Original Assignee
Beijing Institute of Petrochemical Technology
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Beijing Institute of Petrochemical Technology filed Critical Beijing Institute of Petrochemical Technology
Priority to CN202110168013.XA priority Critical patent/CN112920207A/en
Publication of CN112920207A publication Critical patent/CN112920207A/en
Pending legal-status Critical Current

Links

Images

Classifications

    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07F—ACYCLIC, CARBOCYCLIC OR HETEROCYCLIC COMPOUNDS CONTAINING ELEMENTS OTHER THAN CARBON, HYDROGEN, HALOGEN, OXYGEN, NITROGEN, SULFUR, SELENIUM OR TELLURIUM
    • C07F5/00—Compounds containing elements of Groups 3 or 13 of the Periodic System
    • C07F5/003—Compounds containing elements of Groups 3 or 13 of the Periodic System without C-Metal linkages
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
    • C09K11/00—Luminescent, e.g. electroluminescent, chemiluminescent materials
    • C09K11/06—Luminescent, e.g. electroluminescent, chemiluminescent materials containing organic luminescent materials
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07B—GENERAL METHODS OF ORGANIC CHEMISTRY; APPARATUS THEREFOR
    • C07B2200/00—Indexing scheme relating to specific properties of organic compounds
    • C07B2200/13—Crystalline forms, e.g. polymorphs
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
    • C09K2211/00—Chemical nature of organic luminescent or tenebrescent compounds
    • C09K2211/18—Metal complexes
    • C09K2211/182—Metal complexes of the rare earth metals, i.e. Sc, Y or lanthanide

Abstract

The invention discloses a europium luminescent material and a preparation method thereof, wherein the europium luminescent material is a europium complex which takes 4,4, 4-trifluoro-1- (2-naphthyl) -1, 3-butanedione and 4,4 '-dimethyl-2, 2' -bipyridine as ligands. The preparation method of the europium luminescent material comprises the steps of dissolving 4,4, 4-trifluoro-1- (2-naphthyl) -1, 3-butanedione in an ethanol solvent, adjusting the pH value of the solution to be 6-7, heating and refluxing at 60 ℃ for reaction for 30 minutes, adding a europium chloride solution and a 4,4 '-dimethyl-2, 2' -bipyridyl solution, reacting at 70 ℃ for 6 hours, cooling to room temperature after the reaction is finished, filtering, standing and culturing a single crystal, and obtaining a massive yellow crystal after one week, namely the europium luminescent material. The invention has the advantages of simple preparation process, low cost and high product purity, the selected ligand can well sensitize the rare earth europium ion to emit light, and the obtained europium complex can be applied to the fields of luminescent materials and the like.

Description

Europium luminescent material and preparation method thereof
Technical Field
The invention relates to the technical field of europium complex preparation, in particular to a europium luminescent material and a preparation method thereof.
Background
The rare earth complex has excellent optical, electrical and magnetic properties, wherein the application research of the rare earth complex luminescence is the most prominent, and the rare earth complex can be applied to the fields of luminescent materials, photoelectric devices, cell imaging, medical diagnosis and the like. Some existing rare earth complexes cannot emit rare earth ion characteristic light. Rare earth ions need to be sensitized and luminescent by a proper organic ligand, so the selection of the ligand is particularly important.
Disclosure of Invention
The invention aims to provide a europium luminescent material and a preparation method thereof, the method has the advantages of simple preparation process, low cost and high product purity, the selected ligand can well sensitize rare earth europium ions to emit light, and the obtained europium complex can be applied to the fields of luminescent materials and the like.
The purpose of the invention is realized by the following technical scheme:
the europium luminescent material is a europium complex which takes 4,4, 4-trifluoro-1- (2-naphthyl) -1, 3-butanedione and 4,4 '-dimethyl-2, 2' -bipyridyl as ligands.
Single crystal X-ray diffraction data indicate: the europium complex is mononuclear octa-coordinated and crystallized in a monoclinic system P21Space group/n, a is 11.5163(11), b is 28.118(3), c is 15.2841(15), α is 90, β is 104.764(2), γ is 90; the minimum structure of the europium complex comprises a central Eu3+Ion, three 4,4, 4-trifluoro-1- (2-naphthyl) -1, 3-butanedione ligands and one 4,4 '-dimethyl-2, 2' -bipyridine ligand; center Eu3+The ions are respectively coordinated with six O atoms of three 4,4, 4-trifluoro-1- (2-naphthyl) -1, 3-butanedione ligands and two N atoms of a 4,4 '-dimethyl-2, 2' -bipyridyl ligand to form an eight-coordination square antiprism coordination configuration; an average Eu-O bond length of
Figure BDA0002938156910000011
An average Eu-N bond length of
Figure BDA0002938156910000012
The crystal structure data of the europium luminescent material are shown in table 1, and the bond angle of partial bond length of the europium luminescent material is shown in table 2;
TABLE 1 Crystal Structure data of the europium phosphors
Figure BDA0002938156910000013
Figure BDA0002938156910000021
TABLE 2 partial bond length of the europium luminescent materials
Figure BDA0002938156910000022
Angle of harmony key (°)
Eu(1)-O(1) 2.376(5)
Eu(1)-O(2) 2.344(4)
Eu(1)-O(3) 2.360(5)
Eu(1)-O(4) 2.350(5)
Eu(1)-O(5) 2.365(5)
Eu(1)-O(6) 2.372(5)
Eu(1)-N(1) 2.562(5)
Eu(1)-N(2) 2.567(5)
O(1)-Eu(1)-O(2) 71.94(16)
O(1)-Eu(1)-O(3) 133.13(16)
O(1)-Eu(1)-O(4) 75.97(17)
O(1)-Eu(1)-O(5) 83.84(17)
O(1)-Eu(1)-O(6) 151.12(16)
O(2)-Eu(1)-O(3) 73.81(15)
O(2)-Eu(1)-O(4) 86.58(17)
O(2)-Eu(1)-O(5) 154.94(17)
O(2)-Eu(1)-O(6) 134.62(17)
O(3)-Eu(1)-O(4) 70.95(17)
O(3)-Eu(1)-O(5) 121.69(16)
O(3)-Eu(1)-O(6) 73.83(16)
O(4)-Eu(1)-O(5) 81.30(16)
O(4)-Eu(1)-O(6) 111.52(17)
O(5)-Eu(1)-O(6) 70.43(17)
N(1)-Eu(1)-N(2) 62.51(18)
。
A preparation method of a europium luminescent material comprises the following steps:
step 1, dissolving europium chloride hexahydrate in an ethanol solvent to obtain a europium chloride solution; dissolving 4,4 '-dimethyl-2, 2' -bipyridine in an ethanol solvent to obtain a 4,4 '-dimethyl-2, 2' -bipyridine solution;
and 2, dissolving 4,4, 4-trifluoro-1- (2-naphthyl) -1, 3-butanedione in an ethanol solvent, adjusting the pH value of the solution to 6-7, heating and refluxing at 60 ℃ for reaction for 30 minutes, adding the europium chloride solution and the 4,4 '-dimethyl-2, 2' -bipyridyl solution, reacting at 70 ℃ for 6 hours, cooling to room temperature after the reaction is finished, filtering, standing and culturing a single crystal, and obtaining a massive yellow crystal after one week, namely the europium luminescent material.
Preferably, 0.2 millimoles of europium chloride hexahydrate and 0.2 millimoles of 4,4 '-dimethyl-2, 2' -bipyridine are used per 0.6 millimoles of 4,4, 4-trifluoro-1- (2-naphthyl) -1, 3-butanedione.
According to the technical scheme provided by the invention, 4,4, 4-trifluoro-1- (2-naphthyl) -1, 3-butanedione is used as a main ligand, 4,4 '-dimethyl-2, 2' -bipyridine is used as an auxiliary ligand, and the two ligands and europium chloride hexahydrate are used for preparing the europium luminescent material through a solvent volatilization method.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on the drawings without creative efforts.
FIG. 1 is a structural diagram of a europium luminescent material provided by an embodiment of the present invention.
Fig. 2 is a synthesis route diagram of a europium luminescent material provided by an embodiment of the present invention.
FIG. 3 is an X-ray diffraction chart of a europium luminescent material obtained in example 1 of the present invention.
FIG. 4 is a fluorescence emission spectrum of the europium luminescent material prepared in example 1 of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention are clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments of the present invention without making any creative effort, shall fall within the protection scope of the present invention.
The europium luminescent material and the preparation method thereof provided by the invention are described in detail below. Details which are not described in detail in the embodiments of the invention belong to the prior art which is known to the person skilled in the art.
The europium luminescent material is a europium complex which takes 4,4, 4-trifluoro-1- (2-naphthyl) -1, 3-butanedione and 4,4 '-dimethyl-2, 2' -bipyridyl as ligands, and the molecular formula of the europium complex is C54H36EuF9N2O6The structural formula is shown in figure 1.
Single crystal X-ray diffraction data indicate: the europium complex is a mononuclear eight-coordination structure and is crystallized in a single crystalOrthorhombic system P21Space group,/n, unit cell parameters a ═ 11.5163(11), b ═ 28.118(3), c ═ 15.2841(15), α ═ 90, β ═ 104.764(2), γ ═ 90; the minimum structure of the europium complex comprises a central Eu3+Ion, three 4,4, 4-trifluoro-1- (2-naphthyl) -1, 3-butanedione ligands and one 4,4 '-dimethyl-2, 2' -bipyridine ligand; center Eu3+The ions are respectively coordinated with six O atoms of three 4,4, 4-trifluoro-1- (2-naphthyl) -1, 3-butanedione ligands and two N atoms of a 4,4 '-dimethyl-2, 2' -bipyridyl ligand to form an eight-coordination square antiprism coordination configuration; an average Eu-O bond length of
Figure BDA0002938156910000041
An average Eu-N bond length of
Figure BDA0002938156910000042
The crystal structure data of the europium phosphors are shown in Table 3, and the partial bond length bond angles of the europium phosphors are shown in Table 4.
TABLE 3 Crystal Structure data of the europium phosphors
Figure BDA0002938156910000043
TABLE 4 partial bond length of the europium luminescent materials
Figure BDA0002938156910000044
Angle of harmony key (°)
Figure BDA0002938156910000045
Figure BDA0002938156910000051
Specifically, the preparation method of the europium luminescent material can comprise the following steps:
step 1, dissolving europium chloride hexahydrate in an ethanol solvent to obtain a europium chloride solution; 4,4 '-dimethyl-2, 2' -bipyridine is dissolved in an ethanol solvent to obtain a 4,4 '-dimethyl-2, 2' -bipyridine solution.
And 2, dissolving 4,4, 4-trifluoro-1- (2-naphthyl) -1, 3-butanedione in an ethanol solvent, adding a potassium hydroxide solution to adjust the pH value of the solution to 6-7, heating and refluxing at 60 ℃ for reaction for 30 minutes, adding the europium chloride solution and the 4,4 '-dimethyl-2, 2' -bipyridyl solution, reacting at 70 ℃ for 6 hours, cooling to room temperature after the reaction is finished, filtering, standing and culturing a single crystal to obtain a massive yellow crystal, namely the europium luminescent material.
Further, in the above-mentioned europium luminescent material production method, 0.2 mmol of europium chloride hexahydrate and 0.2 mmol of 4,4 '-dimethyl-2, 2' -bipyridine were used per 0.6 mmol of 4,4, 4-trifluoro-1- (2-naphthyl) -1, 3-butanedione.
As shown in figure 2, 4, 4-trifluoro-1- (2-naphthyl) -1, 3-butanedione, 4,4 '-dimethyl-2, 2' -bipyridine and europium chloride hexahydrate are successfully synthesized into the europium complex with 4,4, 4-trifluoro-1- (2-naphthyl) -1, 3-butanedione and 4,4 '-dimethyl-2, 2' -bipyridine as ligands by a solvent slow volatilization method, the method has the advantages of simple preparation process, low cost and high product purity, the selected ligands can well sensitize rare earth europium ions to emit light, and the obtained europium complex can be applied to the fields of luminescent materials and the like.
In conclusion, the embodiment of the invention has the advantages of simple preparation process, low cost and high product purity, the selected ligand can well sensitize the rare earth europium ions to emit light, and the obtained europium complex can be applied to the fields of luminescent materials and the like.
In order to more clearly show the technical solutions and the technical effects provided by the present invention, the europium luminescent material and the preparation method thereof provided by the embodiments of the present invention are described in detail with specific embodiments below.
Example 1
A europium luminescent material and a preparation method thereof can comprise the following steps:
step a, 0.0735g (0.2 mmol) of europium chloride hexahydrate is dissolved in 5 ml of an ethanol solvent, thereby obtaining a europium chloride solution; 0.0369g (0.2 mmol) of 4,4 '-dimethyl-2, 2' -bipyridine was dissolved in 5 ml of an ethanol solvent to obtain a solution of 4,4 '-dimethyl-2, 2' -bipyridine.
And step B, dissolving 0.1598g (0.6 mmol) of 4,4, 4-trifluoro-1- (2-naphthyl) -1, 3-butanedione in 10 ml of ethanol solvent, dripping potassium hydroxide solution to adjust the pH value of the solution to 6-7, heating at 60 ℃ for reflux reaction for 30 minutes, adding the europium chloride solution in the step A, adding the 4,4 '-dimethyl-2, 2' -bipyridyl solution in the step A, reacting at 70 ℃ for 6 hours, naturally cooling to room temperature after the reaction is finished, filtering, standing and culturing single crystals to obtain massive yellow crystals after one week, namely the europium luminescent material.
Specifically, the europium luminescent material prepared in embodiment 1 of the present invention is a europium complex with 4,4, 4-trifluoro-1- (2-naphthyl) -1, 3-butanedione and 4,4 '-dimethyl-2, 2' -bipyridine as ligands, and the molecular formula is C54H36EuF9N2O6The structural formula is shown in figure 1; single crystal X-ray diffraction data indicate: the europium complex is mononuclear octa-coordinated and crystallized in a monoclinic system P21Space group,/n, unit cell parameters a ═ 11.5163(11), b ═ 28.118(3), c ═ 15.2841(15), α ═ 90, β ═ 104.764(2), γ ═ 90; the minimum structure of the europium complex comprises a central Eu3+Ion, three 4,4, 4-trifluoro-1- (2-naphthyl) -1, 3-butanedione ligands and one 4,4 '-dimethyl-2, 2' -bipyridine ligand; center Eu3+The ions are respectively coordinated with six O atoms of three 4,4, 4-trifluoro-1- (2-naphthyl) -1, 3-butanedione ligands and two N atoms of a 4,4 '-dimethyl-2, 2' -bipyridyl ligand to form an eight-coordination square antiprism coordination configuration; an average Eu-O bond length of
Figure BDA0002938156910000061
An average Eu-N bond length of
Figure BDA0002938156910000062
The crystal structure data of the europium phosphors are shown in Table 5, and the partial bond length bond angles of the europium phosphors are shown in Table 6.
TABLE 5 Crystal Structure data of the europium phosphors
Figure BDA0002938156910000063
TABLE 6 partial bond length of the europium luminescent materials
Figure BDA0002938156910000064
Angle of harmony key (°)
Figure BDA0002938156910000065
Figure BDA0002938156910000071
Further, the following tests were performed on the europium luminescent material prepared in example 1 of the present invention:
(1) sampling the europium luminescent material prepared in the embodiment 1 of the invention; to characterize the purity of the sample, a powder X-ray diffraction test was performed on the sample at room temperature, so that an X-ray diffraction pattern shown in FIG. 3 could be obtained. In FIG. 3, a curve Eu-sim represents powder X-ray diffraction data obtained by simulation of single crystal data, and a curve Eu-exp represents powder X-ray diffraction data obtained by experimental tests. As can be seen from fig. 3: the experimental data were consistent with data simulated from single crystal data, demonstrating high sample purity.
(2) The europium luminescent material prepared in example 1 of the present invention was subjected to a solid-state fluorescence emission spectroscopy test at room temperature, so that a fluorescence emission spectroscopy shown in fig. 4 was obtained. As can be seen from fig. 4: obtaining Eu in the europium luminescent material under the excitation wavelength of 300nm3+A series of characteristic emission peaks of the ion, the strongest emission peak being 611nm5D0→7F2Is an ultrasensitive transition, the intensity of which is very vulnerable to Eu3+The symmetry of the ion and the influence of the ligand, i.e., minor changes in coordination environment, can cause significant changes in emission intensity. With 4,4, 4-trifluoro-1- (2-naphthalene)Europium complex constructed by taking base) -1, 3-butanedione and 4,4 '-dimethyl-2, 2' -bipyridine as ligands is in5D0→7F2The emission intensity of the transition may be as high as about 4500000000a.u (being5D0→7F1The transition emission intensity is 15.1 times), which shows that the selected ligand can well sensitize the rare earth europium ion to emit light, and the europium luminescent material prepared in the embodiment 1 can be applied to the fields of luminescent materials and the like.
In conclusion, the embodiment of the invention has the advantages of simple preparation process, low cost and high product purity, the selected ligand can well sensitize the rare earth europium ions to emit light, and the obtained europium complex can be applied to the fields of luminescent materials and the like.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention are included in the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims (4)

1. The europium luminescent material is characterized in that the europium luminescent material is a europium complex which takes 4,4, 4-trifluoro-1- (2-naphthyl) -1, 3-butanedione and 4,4 '-dimethyl-2, 2' -bipyridyl as ligands.
2. The europium luminescent material of claim 1, wherein single crystal X-ray diffraction data indicate that: the europium complex is mononuclear octa-coordinated and crystallized in a monoclinic system P21Space group/n, a is 11.5163(11), b is 28.118(3), c is 15.2841(15), α is 90, β is 104.764(2), γ is 90; the minimum structure of the europium complex comprises a central Eu3+Ion, three 4,4, 4-trifluoro-1- (2-naphthyl) -1, 3-butanedione ligands and one 4,4 '-dimethyl-2, 2' -bipyridine ligand; center Eu3+The ions are respectively coordinated with six O atoms of three 4,4, 4-trifluoro-1- (2-naphthyl) -1, 3-butanedione ligands and two N atoms of a 4,4 '-dimethyl-2, 2' -bipyridyl ligand to form an eight-coordinated square reverse edgeA column coordination configuration; an average Eu-O bond length of
Figure FDA0002938156900000011
An average Eu-N bond length of
Figure FDA0002938156900000012
The crystal structure data of the europium luminescent material are shown in table 1, and the bond angle of partial bond length of the europium luminescent material is shown in table 2;
TABLE 1 Crystal Structure data of the europium phosphors
Figure FDA0002938156900000013
TABLE 2 partial bond length of the europium luminescent materials
Figure FDA0002938156900000014
Angle of harmony key (°)
Figure FDA0002938156900000015
Figure FDA0002938156900000021
3. A preparation method of a europium luminescent material is characterized by comprising the following steps:
step 1, dissolving europium chloride hexahydrate in an ethanol solvent to obtain a europium chloride solution; dissolving 4,4 '-dimethyl-2, 2' -bipyridine in an ethanol solvent to obtain a 4,4 '-dimethyl-2, 2' -bipyridine solution;
step 2, dissolving 4,4, 4-trifluoro-1- (2-naphthyl) -1, 3-butanedione in an ethanol solvent, adjusting the pH value of the solution to 6-7, heating and refluxing at 60 ℃ for reaction for 30 minutes, adding the europium chloride solution and the 4,4 '-dimethyl-2, 2' -bipyridyl solution, reacting at 70 ℃ for 6 hours, cooling to room temperature after the reaction is finished, filtering, standing and culturing a single crystal, and obtaining a block yellow crystal after one week, namely the europium luminescent material in any one of claims 1 to 2.
4. The method of claim 3, wherein 0.2 mmol of europium chloride hexahydrate and 0.2 mmol of 4,4 '-dimethyl-2, 2' -bipyridine are used per 0.6 mmol of 4,4, 4-trifluoro-1- (2-naphthyl) -1, 3-butanedione.
CN202110168013.XA 2021-02-07 2021-02-07 Europium luminescent material and preparation method thereof Pending CN112920207A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202110168013.XA CN112920207A (en) 2021-02-07 2021-02-07 Europium luminescent material and preparation method thereof

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202110168013.XA CN112920207A (en) 2021-02-07 2021-02-07 Europium luminescent material and preparation method thereof

Publications (1)

Publication Number Publication Date
CN112920207A true CN112920207A (en) 2021-06-08

Family

ID=76171074

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202110168013.XA Pending CN112920207A (en) 2021-02-07 2021-02-07 Europium luminescent material and preparation method thereof

Country Status (1)

Country Link
CN (1) CN112920207A (en)

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2002173622A (en) * 2000-12-07 2002-06-21 Orient Chem Ind Ltd Ultraviolet excitation-type ink composition
CN1934214A (en) * 2004-02-06 2007-03-21 三菱化学株式会社 Light emitting device, and lighting device and image display unit using it

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2002173622A (en) * 2000-12-07 2002-06-21 Orient Chem Ind Ltd Ultraviolet excitation-type ink composition
CN1934214A (en) * 2004-02-06 2007-03-21 三菱化学株式会社 Light emitting device, and lighting device and image display unit using it

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
XIAO ZHANG: ""Spectroscopic studies on the luminescence properties of ternary europium complexes with different ligands"", 《JOURNALOFLUMINESCENCE》 *

Similar Documents

Publication Publication Date Title
Zhou et al. Broad-band emission in metal halide perovskites: Mechanism, materials, and applications
Cui et al. Locally collective hydrogen bonding isolates lead octahedra for white emission improvement
Che et al. Photophysical properties and OLED applications of phosphorescent platinum (II) Schiff base complexes
Li et al. Highly efficient and air-stable Eu (II)-containing azacryptates ready for organic light-emitting diodes
Zucchi et al. 2, 2′‐Bipyrimidine as Efficient Sensitizer of the Solid‐State Luminescence of Lanthanide and Uranyl Ions from Visible to Near‐Infrared
Ilmi et al. Effect of 2, 4, 6-tri (2-pyridyl)-1, 3, 5-triazine on visible and NIR luminescence of lanthanide tris (trifluoroacetylacetonates)
Shao et al. Synthesis and photophysical properties of europium (iii)–β-diketonate complexes applied in LEDs
Kulesza et al. Structure and spectroscopy of NaNd (SP) 4 chelate: a new type of lanthanide luminophore
Ferreira da Rosa et al. Coordination geometrical effect on ligand-to-metal charge transfer-dependent energy transfer processes of luminescent Eu (III) complexes
Jiang et al. (1-C5H14N2Br) 2MnBr 4: A Lead-Free Zero-Dimensional Organic-Metal Halide With Intense Green Photoluminescence
Hope et al. Photoluminescent DNA binding and cytotoxic activity of a platinum (II) complex bearing a tetradentate β-diketiminate ligand
Kariaka et al. Coordination compounds based on CAPh type ligand: synthesis, structural characteristics and luminescence properties of tetrakis-complexes CsLnL4 with dimethylbenzoylamidophosphate
Pietraszkiewicz et al. Highly photoluminescent europium tetraphenylimidodiphosphinate ternary complexes with heteroaromatic co-ligands. Solution and solid state studies
Gusev et al. Ln (III) complexes of a bis (5-(pyridine-2-yl)-1, 2, 4-triazol-3-yl) methane ligand: synthesis, structure and fluorescent properties
Gan et al. Synthesis, structures and photophysical properties of polynuclear copper (I) iodide complexes containing phosphine and 4, 4′-bipyridine ligands
Liu et al. Luminescent lanthanide (III)-cored complexes based on the combination of 2-(5-bromothiophen) imidazo [4, 5-f][1, 10] phenanthroline and 2-thenoyltrifluoroacetonate ligands
Shen et al. New 2-phenyl-5-nitropyridyl containing iridium (III) cyclometalated complexes: syntheses, structures, electrochemistry and photophysical properties
CN112521287A (en) Nitrogen-containing amphiphilic organic ion manganese halide luminescent material and preparation method and application thereof
CN112920207A (en) Europium luminescent material and preparation method thereof
Luo et al. Exploration of phosphorescent platinum (II) complexes functionalized by distinct main-group units to search for highly efficient blue emitters applied in organic light-emitting diodes: A theoretical study
Zhang et al. Syntheses, Structures, and Photoluminescence Properties of a Series of 3D Zn‐Ln Heterometallic Complexes with 2, 3‐Pyrazine Dicarboxylic Acid as a Bridging Ligand
Li et al. A 2D layer network assembled from an open dendritic silver cluster Cl@ Ag 11 N 24 and an N-donor ligand
Wei et al. Synthesis, structure, and photoelectric properties of a novel zero-dimensional organic-inorganic hybrid perovskite (C6H9N2) 2MnI4
Balashova et al. Polynuclear Heteroligand Yb (III)–Er (III) Complexes as Potential Upconversion Materials
JP6316206B2 (en) Luminescent material

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination
RJ01 Rejection of invention patent application after publication
RJ01 Rejection of invention patent application after publication

Application publication date: 20210608