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Schiff base zinc complex ZnL and preparation method thereof

A Schiff base zinc and complex technology, applied in the field of Schiff base zinc complex ZnL and its preparation, to achieve good stability, increase effective transmission, and improve photoelectric efficiency

Inactive Publication Date: 2020-05-08
TAIZHOU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] At present, there are no reports on the application of such Schiff base platinum complexes in dye-sensitized solar cells. Therefore, we need to develop and research Schiff base complexes used in dye-sensitized solar cells

Method used

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  • Schiff base zinc complex ZnL and preparation method thereof
  • Schiff base zinc complex ZnL and preparation method thereof
  • Schiff base zinc complex ZnL and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0043] The preparation of embodiment 1 Schiff base zinc complex ZnL

[0044] 1)

[0045]

[0046] Take 0.262g (1.7mol) of 3,4-diaminobenzoic acid and 1.210g (5.1mmol) of 3,5 di-tert-butyl salicylaldehyde in absolute ethanol, add 2 drops of concentrated sulfuric acid dropwise, at 78°C React for 24 hours, cool to room temperature, wash with absolute ethanol three times after suction filtration, and dry to obtain 0.485 g of a light green solid with a yield of about 48.2%.

[0047] 1 H NMR (400Hz, CDCl 3)δ:13.38(s,1H,-OH),13.30(s,1H,-OH),8.78(s,1H,N=CH),8.72(s,1H,N=CH),8.10(d,1H ,Ar-H,J=8.0Hz),8.03(s,1H,Ar-H),7.50(d,2H,Ar-H,J=4.0Hz),7.26-7.34(m,3H,Ar-H) ,1.35-1.36(m,18H,-CH 3 ),1.45-1.47(m,18H,-CH 3 );

[0048] IR(KBr):

[0049] 2)

[0050]

[0051] Weigh 0.145g (0.25mmol) of Schiff base ligand L and 0.055g (0.25mmol) of zinc acetate dihydrate in ethanol, react at 70°C for 6-8 hours, cool to room temperature and start suction filtration, use anhydrous Washed wi...

Embodiment 2

[0054] Embodiment 2 Schiff base zinc complex ZnL ultraviolet absorption spectrometry

[0055] Accurately weigh 10 mg Schiff base zinc complex ZnL and dissolve in dimethyl sulfoxide to prepare 1.0×10 -5 M solution, accurately pipette 3.0ml of the above solution into the cuvette. The ultraviolet absorption spectrum was measured on a Shimadzu UV-2450UV / Vis ultraviolet-visible absorption instrument. The tests were performed at room temperature and outside atmospheric pressure. Absorption test spectrum see figure 1 . From figure 1 It can be seen that the maximum ultraviolet absorption wavelength is 435 nm.

Embodiment 3

[0057] Accurately weigh 10 mg Schiff base zinc complex ZnL and dissolve in dimethyl sulfoxide to prepare 1.0×10 -4 M solution. Accurately take 4.0ml of the solution and add it to a 10.0ml beaker, test the cyclic voltammetry curve of the compound in the AUTOLAB three-electrode system, the reference electrode is a saturated calomel electrode, and the supporting electrolyte is 0.1mol / L tetrabutylammonium hexafluorophosphate , the scanning speed at room temperature is 50mv / s, and the molecular orbital energy level parameters are shown in Table 1.

[0058] Table 1 Molecular orbital energy level parameters of the Schiff base zinc complex ZnL

[0059]

[0060] a Ferrocene Fc / Fc + reference electrode; b HOMO=-(Eox+4.80)eV;

[0061] c HOMO-Eg; d Measured by UV-Vis absorption spectrum (Eg=1240 / λ g ,λ g is the absorption wavelength threshold)

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Abstract

The invention relates to a Schiff base zinc complex ZnL and a preparation method thereof. The maximum ultraviolet absorption wavelength of the Schiff base zinc complex ZnL is 435 nm, the energy levelof a highest occupied molecular orbital (HOMO) is -5.34 eV, and the energy level of a lowest unoccupied molecular orbital (LUMO) is -3.03 eV. A dye-sensitized solar cell prepared by taking the Schiffbase zinc complex ZnL as a dye has the following photovoltaic parameters: the open-circuit voltage Voc is 629 mV, the short-circuit current density Jsc is 2.11 mA.cm<-2>, the filling factor FF is 70.46%, and the photoelectric conversion efficiency eta is 0.99%.

Description

technical field [0001] The invention relates to a dye sensitizer and a preparation method thereof, in particular to a Schiff base zinc complex ZnL and a preparation method thereof. Background technique [0002] Dye-sensitized solar cells (DSSCs) have attracted extensive attention due to their relatively low manufacturing cost, relatively simple fabrication process, and relatively stable performance. Dyes are the key components of DSSCs. There are many kinds of sensitizer materials used to sensitize DSSCs. The main dyes include pure organic dyes, quantum dot dyes, and organometallic complex dyes. At present, organometallic complex dyes are a major research hotspot. The most widely used organometallic complex dye sensitizers are complexes of ruthenium, in addition to complexes of iridium, iron, cobalt, zinc, platinum, etc. Most of the body uses bipyridine, phthalocyanine, porphyrin and so on. [0003] Schiff base is a kind of compound with excellent coordination activity, be...

Claims

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Application Information

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IPC IPC(8): C07C251/24C07C249/02H01G9/20
CPCC07C251/24C07C249/02H01G9/2059Y02E10/542
Inventor 张杰韩得满任世斌
Owner TAIZHOU UNIV
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