KR20150034871A - Novel Compounds, Agent Selecting Chromium Ion Or Aluminum Ion Using The Same, Detecting Method And Detecting Device Thereof - Google Patents

Abstract

The present invention relates to a detecting agent for detecting chromium ions(Cr^3+) or aluminum ions (Al^3+) including compounds of chemical formula 1, a detecting method and a detecting device.

Description

TECHNICAL FIELD [0001] The present invention relates to a novel compound, a chromium ion or an aluminum ion detecting agent using the same, a detecting method, and a detecting apparatus.

The present invention relates to a novel compound, a detecting agent having selectivity for chromium ion or aluminum ion containing the compound, a detecting method using the same, and a detecting apparatus.

Fluorescent chemical sensors have high sensitivity, selectivity and various functions, and are easy to handle and widely used as a good tool for detecting neutral and ionic species.

Trivalent chromium ions (Cr ^{3 +} ) are well-known environmental pollutants that accumulate due to agriculture and industry activities, but they are also an essential component for balanced food consumption of humans and animals. Deficiency of trivalent chromium ions (Cr ^{3 +} ) can increase risk factors associated with diabetes or cardiovascular disease and can impair glucose levels and lipid metabolism.

Aluminum is the third most abundant element on the planet and affects human health at current environmental levels (acid rain, industrial pollution, etc.) and therapeutic levels (Al-containing antacids, intravenous drugs, nutrients, blood products, vaccines, etc.) Is well known. However, excessive accumulation of aluminum in the body can cause central nervous system dysfunction, Parkinson's disease and Alzheimer's disease.

For this reason, there are efforts to develop a variety of chemical sensors to selectively detect the chromium ions (Cr ^{+ 3)} and aluminum ions (Al ^{+ 3)} achieved much. In particular, it is desirable to simultaneously detect a plurality of desired metal ions with a single probe for fast and economical analysis. However, chemical sensors for detecting other metal ions at the same time are not well known.

M, Sarkar. S, Banthia, A. Sammanta. Tetrahedron Letters. 2006, 47, 7575-7578.

An object of the present invention is to prepare a compound that exhibits a color change or fluorescence by selectively coupling and metal ions, among chromium ions (Cr ^{+ 3)} or aluminum ions (Al ^{+ 3).}

In addition, the present invention is to provide a chromium ion (Cr ^{+ 3)} or aluminum ions (Al ^{+ 3)} detecting the detection method and a detection device comprising the compound for the purpose.

In order to achieve the above object,

The present invention provides a compound represented by the following formula (1).

[Chemical Formula 1]

The present invention also provides a process for preparing a compound of formula 1, which comprises reacting 8-quinoline amine and 1-hydroxynaphthalene-2-carbaldehyde.

The present invention also provides a chromium ion (Cr ^{+ 3)} or aluminum ions (Al ^{+ 3)} detection agent comprising the compound of formula (I).

The present invention also provides a chromium ion (Cr ^{+ 3)} or aluminum ions (Al ^{+ 3)} is detected to use the compound of formula 1.

The present invention also provides the chromium ions (Cr ^{+ 3)} or aluminum ions (Al ^{+ 3)} chromium ion containing the detection agent (Cr ^{+ 3)} or aluminum ions (Al ^{+ 3)} detecting device.

The compound of the present invention is simple to manufacture and can be detected by selectively binding with chromium ions (Cr ^{3 +} ) or aluminum ions (Al ^{3 +} ) among metal ions. Accordingly, the compounds of the invention may be used as a detection device for detecting the chromium ions (Cr ^{+ 3)} or aluminum ions (Al ^{+ 3).}

FIG. 1 shows the structure of the compound of Formula 1 when it is combined with chromium ion (Cr ^{3 +} ).
FIG. 2 is a graph showing the absorbance when various metal ions are added to the compound of formula (1).
3 is a photograph showing the color change when various metal ions are added to the compound of the formula (1).
4 is a graph showing the absorbance of the compound of Chemical Formula 1 when the amount of chromium ion (Cr ^{3 +} ) is increased.
FIG. 5 is a graph showing the absorbance at 467 nm when the amount of chromium ion (Cr ^{3 +} ) is added to the compound of Chemical Formula 1.
FIG. 6 is a graph of a Job's plot showing that the compound of Formula 1 and chromium ion (Cr ^{3 +} ) are bound at a ratio of 1: 1.
7 is an ESI-MS spectrum showing that the compound of formula (I) and chromium ion (Cr ^{3 +} ) are bonded at a ratio of 1: 1.
8 shows the structure when the compound of formula (1) is bonded to an aluminum ion (Al ^{3 +} ).
9 is a graph showing the intensity of fluorescence when various metal ions are added to the compound of formula (I).
10 is a bar graph showing fluorescence intensities at 526 nm when various metal ions are added to the compound of formula (I).
11 is a graph showing the intensity of fluorescence when the compound of formula (I) is added while increasing the amount of aluminum ion (Al ^{3 +} ).
12 is a graph showing the intensity of fluorescence at 526 nm when the amount of aluminum ion (Al ^{3 +} ) is added to the compound of formula (1).
13 is a graph of a Job's plot showing that the compound of Formula 1 and aluminum ion (Al ^{3 +} ) are bound in a 2: 1 ratio.
14 is an ESI-MS spectrum showing that the compound of formula (1) and aluminum ion (Al ^{3 +} ) are bound in a 2: 1 ratio.
15 is a graph showing ¹ H NMR changes of a compound of formula (1) resulting from increasing the amount of aluminum ion (Al ^{3 +} ) in a methanol-d ₄ solvent.
FIG. 16 is a bar graph showing fluorescence experimental results to confirm that the compound of Chemical Formula 1 is interfered with the detection of aluminum ion (Al ^{3 +} ) when various metal ions are present. FIG.

Hereinafter, the present invention will be described in more detail.

The present invention relates to a compound represented by the following general formula (1).

 [Chemical Formula 1]

The compound of Formula 1 can be obtained by reacting 8-quinolineamine with 1-hydroxynaphthalene-2-carbaldehyde. The reaction conditions are relatively simple, can do.

The invention also relates to detecting the chromium ions (Cr ^{+ 3)} or aluminum ions (Al ^{+ 3)} which comprises a compound of formula (I).

The compound of Formula 1 has a variety of metal ions _(e.g., Ag ^+, Al ^{3 +, _{Ca 2 +, Cd 2 +,}} Co 2+, ^{Cr 3 +, Cu 2 +,} Fe 2 +, Hg 2 +, K +, Mg 2 +, Mn 2 +, Na +, Ni 2 +, Pb 2 +, Zn 2 +) Among the chromium ion (Cr ^{3 +)} Or aluminum ions (Al ^< ^{3 + &} gt ^; ) and is used as a detecting agent capable of detecting the metal ion. The detecting agent may further include a solvent, preferably alcohol, but not limited thereto.

In addition, the compound of Formula 1 has a chromium ion (Cr ^{3 +)} and 1: Combining a 1, and the colorless and yellow color change, aluminum ions (Al ^{3 +)} and 2: shows a strong fluorescence and combined into one. The binding of the compound of formula 1 with chromium ion (Cr ^{3 +} ) at a ratio of 1: 1 and the aluminum ion (Al ^{3 +} ) at 2: 1 can be achieved through Job's plot and ESI- . Therefore, it is possible in the present invention by using a compound of formula (I) to provide a detection method of the chromium ions (Cr ^{+ 3)} or aluminum ions (Al ^{+ 3).}

The present invention provides a detection device including a chromium ion (Cr ^{+ 3)} or aluminum ions (Al ^{+ 3)} detection agent. The detection device can detect the ions through changes in color or fluorescence, and a preferable detection device is a probe.

Hereinafter, the present invention will be described in more detail with reference to Examples and Experimental Examples. These Examples and Experimental Examples are only for illustrating the present invention, and the scope of the present invention is not limited to these Examples and Experimental Examples.

Example  1. Preparation of the compound of formula (1)

0.16 g (1.1 mmol) of 8-quinolineamine and 0.18 g (1 mmol) of 1-hydroxynaphthalene-2-carbaldehyde were dissolved in 10 mL of purified ethanol. The reaction solution was heated and stirred in a nitrogen atmosphere for one hour. Thereafter, the reaction solution was cooled to room temperature, filtered and recrystallized from ethanol to obtain a red product. The reaction formula is as follows.

The structure of the obtained product was confirmed by NMR, ESI-MS and EA.

[Reaction Scheme 1]

Yield: 88%.

¹ H NMR (DMSO-d ₆ , 400 MHz)? 14.99 (d, 1 H), 9.11 (d, 1H), 9.02 (d, 1H), 7.85 (d, 1H), 7.72 (m, 2H), 7.63 (d, 2H), 7.45

_{^{13 C NMR (DMSO-d 6}} , 400 MHz): δ 181, 150.30, 150.21, 138.27, 137.84, 136.49, 135.43, 131.42, 130.55, 129.34, 128.44, 127.33, 126.95, 125.69, 125.3, 124.19, 122.71, 115.01, 113.29, 110.52 ppm.

HRMS (ESI): m / z : Theoretical value for [M + H] < ⁺ >: 299.12, found 299.20.

C ₂₀ H ₁₅ NO ₂ (Molecular weight: 298.11) Theoretical value: C, 80.52; H, 4.73; N, 9.39% Found: C, 79.92; H, 4.39; N, 9.07%.

Experimental Example  One. Example  1 < / RTI > of the compound of formula (I) and various metal ions

The compound of Formula 1 prepared in Example 1 and various metal ions (Ag ⁺ , Al ³⁺ _{, ^{Ca 2 +, Cd 2 +,}} Co 2 +, ^{Cr 3 +, Cu 2 +,} Fe 2 +, Hg 2 +, K +, Mg 2 +, Mn 2 +, Na +, Ni 2 +, Pb 2 +, Zn 2 by reacting ⁺⁾ UV-vis absorption wavelength Were observed.

The compound of Formula 1 (1.49 mg, 0.005 mmol) was dissolved in 1 mL of a methanol solvent, and 6 μL of the solution was diluted with 2.994 mL of methanol to a final concentration of 10 μM. 10 mM of each of various metal ion solutions was prepared using methanol, and 30 μL of the metal ion solution was added to 3 mL of the compound (1 μM) solution (10 μM). Then, each UV- vis wavelength was measured. At this time, the metal ion solution was prepared using nitrate salt.

Ag _^+, Al ^{3 +, _{Ca 2 +, Cd 2 +,}} Co 2 +, Cu 2 +, Hg 2 +, K +, Mg 2 +, Mn 2 +, Na +, Ni 2 +, Pb 2 + And Zn < ^{2 +} > were found to be almost unchanged or only slightly decreased in absorbance compared to the compound of formula (1). The absorption wavelength of the iron ion (Fe ^{2 +} ) showed a slight blue shift but little change in the solution was observed (FIG. 3).

However, in the case of chromium ion (Cr ^{3 +} ), a large change was observed in comparison with the absorption wavelength of the compound of formula (1). Compounds of formula 1 have absorbance at both absorption wavelengths of 470 nm and 494 nm, whereas in case of chromium ion (Cr ^{3 +} ) the absorbance disappeared at the two absorption wavelengths (FIG. 2). As a result, a color change from yellow to colorless was observed (Fig. 3). Therefore, it was found that the compound of formula (I) of the present invention highly selectively detects chromium ion (Cr ^{3 +} ).

UV titration experiments were carried out to examine the binding properties of the compound of formula (1) prepared in Example 1 and chromium ion (Cr ^{3 +} ). The amount of chromium ion (Cr ^{3 +} ) was adjusted to 0.2, 0.4, 0.6, 0.8, 1.0, 1.2. The absorbance was measured while gradually increasing to 1.4, 1.6, 1.8, 2.0, 2.2, 2.4, 2.6, 2.8, 3.0 equivalents. As a result, it was confirmed that absorbance decreased at 278 nm, 344 nm and 467 nm as the amount of chromium ions (Cr ^{3 +} ) increased and new absorption wavelengths were generated at 262 nm and 382 nm (FIG. 4). In addition, an isosbestic point was observed at 374 nm and 394 nm, which can be expected to form a complex with a compound of formula (I) and chromium ion (Cr ^{3 +} ) (FIG. 1).

Experimental Example  2. Example  1 and a chromium ion ( Cr ^{3 +} )

2-1. Misplat ( job's plot ) Experiment

A job's plot was obtained using a UV-vis to determine the ratio of the compound of formula (1) prepared in Example 1 and chromium ion (Cr ^{3 +} ).

The compound of Formula 1 (14.9 mg, 0.05 mmol) was dissolved in 5 mL of a methanol solvent and the solution was transferred to each vial at 45, 40, 35, 30, 25, 20, 15, 10 and 5 μL . _{Cr (NO 3) 3 (20.20} mg, 0.05 mmol) was dissolved in 5 mL methanol, and the solution of compound 1 solutions in 5, 10, 15, 20, 25, 30, 35, 40, the total volume of each addition by 45 μL 50 μL of a mixed solution was prepared and diluted by adding 4.95 mL of methanol to make a total volume of 5 mL. Where ^{([Cr 3 +] / (} [ Formula ^{1] + [Cr 3 +]} )) Each solution can be expressed by the following formula is a value of 0.1, 0.2, 0.3, 0.4, 0.5, 0.6, 0.7, 0.8, 0.9 I have.

All solutions were measured by UV-vis and the highest absorbance was obtained at 0.5. Thus, it was found that the compound of the formula (1) and the chromium ion (Cr ^{3 +} ) had a 1: 1 coupling ratio when forming the complex (FIG. 6).

2-2. ESI - MS  Experiment

As a result of measurement of each of the mixed solutions by ESI-MS, it was found that the value (m / z = 222.87) when one chromium ion (Cr ^{3 +} ) and one compound of formula : 222.56), and it was found that the compound of formula (1) and the chromium ion (Cr ^{3 +} ) had a 1: 1 bond (FIG. 7).

Experimental Example  3. Example  1 < / RTI > of the compound of formula < RTI ID = 0.0 >

The compound of Formula 1 prepared in Example 1 and various metal ions (Ag ⁺ , Al ³⁺ _{, ^{Ca 2 +, Cd 2 +,}} Co 2 +, By reacting a ^{Cr 3 +, Cu 2 +,} Fe 2 +, Hg 2 +, K +, Mg 2 +, Mn 2 +, Na +, Ni 2 +, Pb 2 +, Zn 2 +) was observed fluorescence properties .

Compound 1 (1.49 mg, 0.005 mmol) was dissolved in 1 mL of methanol and 6 μL of the solution was diluted in 2.994 mL of methanol to a final concentration of 10 μM. 10 mM of each of various metal ion solutions was prepared using methanol, and 30 μL of the metal ion solution was added to 3 mL of the compound (1 μM) solution (10 μM), and the fluorescence intensity was measured using a fluorescence instrument .

The results of fluorescence analysis for each metal ion are shown in FIG. 9 and FIG. The compound of formula (1) showed very weak fluorescence intensity at 450 nm. ^{Ag +, Ca 2 +, Cd} 2 +, Co 2+, ^{Cr 3 +, Cu 2 +,} Fe 2 +, Hg 2 +, K +, Mg 2 +, Mn 2 +, Na +, Ni 2 + , and the addition to the solution of the compound of formula (1) the metal ion of Pb ^{2 +} No change in fluorescence intensity was observed, and slight increase in fluorescence intensity was observed in the case of Zn ^{2 +} . However, aluminum ion (Al ^{3 +} ) observed a significant increase in fluorescence intensity at 526 nm. The increase in fluorescence intensity can be expected to be due to the complex formation of the compound of formula 1 with aluminum ions (Al ^{3 +} ) (FIG. 8).

Fluorescence titration experiments were carried out to investigate the binding properties of the compound of formula (1) and aluminum ion (Al ^{3 +} ). The amount of aluminum ion (Al ^{3 +} ) was adjusted to 0.1, 0.2, 0.3, 0.4, 0.5, 0.6, 0.7, 0.8, 0.9, 1.0, 1.2, and 1.4 equivalents, respectively. As a result, it was observed that the fluorescence intensity was gradually increased as the amount of aluminum ion (Al ^{3 +} ) was increased (λex = 450 nm) (FIGS. 11 and 12).

Experimental Example  4. Example  1 and the aluminum ion ( Al ^{3 +} )

4-1. Misplat  ( Job's plot ) Experiment

To investigate the binding ratio of the compound of formula (1) prepared in Example 1 and aluminum ion (Al ^{3 +} ), a job's plot was measured using a UV-vis.

The compound of Formula 1 (14.9 mg, 0.05 mmol) was dissolved in 5 mL of methanol and the solution was transferred to each vial at 45, 40, 35, 30, 25, 20, 15, 10, and 5 μL, respectively. Al (NO ₃ ) ₃ (18.76 mg, 0.05 mmol) was dissolved in 5 mL of methanol, and 5, 10, 15, 20, 25, 30, 35, 40 and 45 μL of the solution were added to the compound of formula , And 4.95 mL of methanol was added to dilute the total volume to 5 mL. In this case, each of the solutions has a value of 0.1, 0.2, 0.3, 0.4, 0.5, 0.6, 0.7, 0.8 and 0.9 in terms of ([Al ³⁺ ] / (Formula 1) + [Al ^{3 +} I have.

All solutions were measured by UV-vis spectroscopy and showed the highest fluorescence intensity at 0.3 and that the compound of formula (1) and aluminum ion (Al ^{3 +} ) had a binding ratio of 2: 1 when forming a complex (Fig. 13).

4-2. ESI - MS  Experiment

ESI-MS experiments were carried out in order to examine the binding ratio of aluminum ion (Al ^{3 +} ) to the compound of formula (1) prepared in Example 1 above. As a result, a single aluminum ion (Al ^{3 +)} and a value when the two compounds (1) of the formula (1) Coupling: shows the highest values in (m / z = 621.40, the theoretical 621.19) compound and the aluminum of the formula It was found that the ion (Al ^{3 +} ) has a 2: 1 bond (FIG. 14).

4-3. ^One H NMR  Titration experiment

¹ H NMR titration in methanol-d ₄ was carried out to investigate the bonding state between aluminum ion (Al ^{3 +} ) and the compound of formula (1) prepared in Example 1. Six NMR tubes were prepared by dissolving the compound of the formula (1) (2.98 mg, 0.01 mmol) in 0.5 mL of methanol-d _4. Al (NO ₃ ) _{3 was added} to 0.5 mL of methanol-d ₆ at 0, 0.001, 0.002, 0.004 and 0.005 mmol, respectively, were added to the compound of formula (1). After shaking for several minutes, ¹ H NMR was measured to obtain a spectrum.

The results are shown in Fig. 15 shows the spectra before and after the treatment of the aluminum salt [Al (NO ₃ ) ₃ ], wherein I is the compound of the formula 1 and aluminum salts [Al (NO ₃ ) ₃ ] 0.3, 0.4, and 0.5 equivalents, respectively.

As shown in FIG. 15, when the compound of Formula 1 and the aluminum ion (Al ^{3 +} ) form a complex (FIG. 8), the electron density of the compound of Formula 1 decreases, A chemical shift of the compound of formula (I) occurred. When 0.5 equivalent of aluminum salt was added, H _a of the immigrant part shifted from 8.82 ppm to 0.22 ppm down field. Similarly, H _b , H _{c ,} and H _d of the quinoline moiety shifted to 0.06, 0.33, and 0.23 ppm downfield, respectively, when 0.5 equivalents of aluminum salt was added. No change in spectra was observed when 0.5 equivalent or more of aluminum salt was added. ^{The 1} H NMR results demonstrate that complex formation between the aluminum ion (Al ^{3 +} ) and the compound of formula 1 causes a chemical shift of the proton peak.

4-4. Interference experiment

The embodiment is a compound of formula I prepared in one of the other metal ions when detecting the aluminum ions (Al ^{+ 3)} (Ag ^+, Ca ^{+ 2,} Cd ^{+ _2,} Co ^{+ 2, Cr 3 +, Cu 2 +,} Fe 2 +, Hg 2 +, K +, Mg 2 +, Mn 2+, Na +, Ni 2 +, Pb 2 +, experiments to assess whether the disturbance of the Zn ^{+ 2)} .

 The compound of Formula 1 (1.49 mg, 0.005 mmol) was dissolved in 1 mL of methanol and 6 μL of the solution was diluted in 2.994 mL of methanol to a final concentration of 10 μM. The metal salt (0.01 mmol) was dissolved in 10 mL of methanol, and 3 μL of the solution was added to 3 mL of the compound of Formula 1, respectively. 3 μL of an aluminum salt solution (10 mM) prepared by using methanol was added to a mixed solution of a metal ion and a compound of formula (1), mixed well, and a spectrum was obtained by using a fluorescence instrument.

The results are shown in Fig. Aluminum ions of the compounds of formula 1 (Al ^{+ 3),} except for Cu ^{+ 2} and Fe ^{2 +} that interfere strongly with the detection, and the other metal ions (Ag ^+, Ca ^2+, Cd _^2+, Co ^{2 +, Cr 3 +, Hg 2 +,} K +, Mg 2 +, Mn 2 +, Na +, Ni 2 +, Pb 2 +, Zn 2 +) will interfere with aluminum ions (Al ^{3 +)} detection of the compounds of the formula Did not do it.

Accordingly, the compounds of formula (I) was found to be can be used as a fluorescence sensor which can selectively detect the presence of various metal ions aluminum ions (Al ^{+ 3).}

Claims (7)

A compound represented by the following formula (1).
[Chemical Formula 1]

8-quinoline amine and 1-hydroxynaphthalene-2-carbaldehyde. Chromium containing compounds of the formula I of claim 1 ion (Cr ^{+ 3)} or aluminum ions (Al ^{+ 3)} the detection. The method according to claim 3, wherein the detection agent is chrome, characterized in that it comprises a solvent, an additional ion (Cr ^{+ 3)} or aluminum ions (Al ^{+ 3)} the detection. Chromium claims to use a compound of formula (1) ions of the first (Cr ^{+ 3)} or aluminum ions (Al ^{+ 3)} detection method. Of claim 3 chromium ions (Cr ^{+ 3)} or aluminum ions (Al ^{+ 3)} chromium ions (Cr ^{+ 3)} or aluminum ions (Al ^{+ 3)} detection apparatus comprising a detection agent. According to claim 6, wherein said detection device is chromium ions (Cr ^{+ 3)} or aluminum ions (Al ^{+ 3)} detection device, it characterized in that the probe (probe).

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