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A polymer complex containing vinylphenyl and p-vinylphenol methyleneamine derivatives combined with cadmium and its preparation method and use

A technology of vinylphenol-based methyleneamine and vinylphenyl, which is applied in the field of photoelectric materials, can solve the problems of ordinary metal complexes such as limited light absorption performance, limited photoelectric efficiency, and poor stability, so as to improve light absorption performance and carrier transport capacity , expand the conjugated π system, and improve the effect of photovoltaic performance

Active Publication Date: 2021-05-07
XIANGTAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Dye-sensitized solar cell (DSSC) is currently one of the organic solar cells with the most potential for research and development and application, and has attracted in-depth research all over the world. Dye sensitizers can generate photogenerated electrons after absorbing sunlight. The key photosensitive materials of dye-sensitized solar cells (DSSC), the synthesis and performance research of dye sensitizers started from ruthenium-based complex dyes, but due to the high cost and limited sources of ruthenium, they gradually turned to pure organic and common transitions. In the research of metal complex dye sensitizers, the current organic dye sensitizers face defects such as poor stability and limited photoelectric efficiency, and the light-absorbing properties of common metal complexes are also limited. The polymer complex dye sensitizer obtained by polymerizing the polymer dye has improved light absorption performance, electron transport performance and photoelectric conversion efficiency.

Method used

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  • A polymer complex containing vinylphenyl and p-vinylphenol methyleneamine derivatives combined with cadmium and its preparation method and use
  • A polymer complex containing vinylphenyl and p-vinylphenol methyleneamine derivatives combined with cadmium and its preparation method and use
  • A polymer complex containing vinylphenyl and p-vinylphenol methyleneamine derivatives combined with cadmium and its preparation method and use

Examples

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preparation example Construction

[0027] The preparation synthesis reaction scheme of compound of the present invention is:

[0028]

Embodiment 1

[0031] A polymeric complex PBDTT-SF-Cd containing vinylphenyl and p-vinylphenol methyleneamine derivatives and cadmium.

[0032] Its molecular structural formula is:

[0033]

[0034] The preparation method of the complex PBDTT-SF-Cd of the above-mentioned polymerized cadmium:

[0035]A. The synthesis of p-nitrostyrene (1): under inert gas (Ar) protection condition, 5.00g (23.10mmol) nitrobromide and 6.15g (23.40mmol) triphenylphosphine are dissolved in 40mL chloroform, stir After 2 hours, pour it into diethyl ether, filter and precipitate the solid, and dry to obtain 10.30 g of white phosphine salt crystals, with a yield of 92.0%, and a melting point of 274 to 275° C. The phosphine salt prepared above was directly used in the witting reaction, and 7.50 g of the phosphine salt ( 15.5mmol) in a three-necked flask, add 30ml mass fraction of 37% formaldehyde aqueous solution, fully stir to form a suspension, slowly add 3.00g Na 2 CO 3 10mL aqueous solution, the suspension w...

Embodiment 2

[0043]Determination of thermogravimetric analysis (TGA) curve of polymetallic complex dye PBDTT-SF-Cd, method: thermogravimetric analyzer of SDTQ600, N 2 The test was carried out at a heating rate of 20°C / min under protection, and the test results were as follows Figure 8 .

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Abstract

The present invention relates to a kind of D-A-π-A polymer complex (as shown in the following formula) using vinylphenyl and p-vinylphenol methyleneamine derivatives and cadmium complexes as auxiliary electron acceptors A and a preparation method thereof, Its use is as a dye sensitizer in dye-sensitized solar cells. The polymer complex uses dithiophene-benzodithiophene derivatives (BDTT) as the donor D, and contains vinylphenyl and p-vinylphenol subgroups. Methylamine derivatives and cadmium complexes are used as auxiliary electron acceptor A, another ligand 8-hydroxyquinoline coordinated with cadmium is used as π bridge, cyanoacrylic acid is used as electron acceptor A and anchor group, and cadmium is coordinated A new type of polymeric complex dye sensitizer PBDTT-SF-Cd prepared by Heck polymerization of substance and donor BDTT, the dye sensitizer shows good photovoltaic performance and high thermal stability, and its photoelectric conversion efficiency PCE It reaches 8.20%, and the thermal decomposition temperature is 345°C, which has certain application value for the research and development of dye-sensitized solar cells.

Description

technical field [0001] The present invention relates to a kind of D-A-π-A polycomplex with vinylphenyl and p-vinylphenol methyleneamine derivative cadmium complex as auxiliary electron acceptor A and its preparation method, and it is applied to dye sensitization It is used as a dye sensitizer in solar cells and belongs to the field of photoelectric materials in new materials. Background technique [0002] Dye-sensitized solar cell (DSSC) is currently one of the organic solar cells with the most potential for research and development and application, and has attracted in-depth research all over the world. Dye sensitizers can generate photogenerated electrons after absorbing sunlight. The key photosensitive materials of dye-sensitized solar cells (DSSC), the synthesis and performance research of dye sensitizers started from ruthenium-based complex dyes, but due to the high cost and limited sources of ruthenium, they gradually turned to pure organic and common transitions. In ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08G83/00C09B69/10H01G9/20
CPCC08G83/008C09B69/105H01G9/2059Y02E10/542
Inventor 钟超凡唐时雨陈旭万婷夏畅闻高峰王凯旋
Owner XIANGTAN UNIV
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