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D-D-pi-A structure photosensitive dye taking carbazole and triphenylamine as two-stage electron donors as well as preparation method and application thereof

An electron donor and photosensitizing dye technology, applied in the field of solar cells, can solve the problems of unfriendly environment, high preparation cost, hindering the application and development of metal dyes, etc.

Inactive Publication Date: 2020-08-21
HEBEI UNIVERSITY OF SCIENCE AND TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the practical application and development of metal dyes are hindered by problems such as high preparation cost, complicated process, and unfriendly environment.

Method used

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  • D-D-pi-A structure photosensitive dye taking carbazole and triphenylamine as two-stage electron donors as well as preparation method and application thereof
  • D-D-pi-A structure photosensitive dye taking carbazole and triphenylamine as two-stage electron donors as well as preparation method and application thereof
  • D-D-pi-A structure photosensitive dye taking carbazole and triphenylamine as two-stage electron donors as well as preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0084] Embodiment 1 A kind of preparation method using carbazole and triphenylamine as the photosensitizing dye of the D-D-π-A structure of two-stage electron donor

[0085] The structural formula of the photosensitizing dye with the D-D-π-A structure prepared in this embodiment with carbazole and triphenylamine as the two-stage electron donor is as follows:

[0086]

[0087] Its preparation process comprises the following steps carried out in sequence:

[0088] 1) Preparation of Intermediate I

[0089] Under nitrogen protection, add 3kg of 4-bromotriphenylamine (9.25mol) to 30L of N,N-dimethylformamide, stir and dissolve at room temperature, cool to 0°C and slowly add 7.2kg of phosphorus oxychloride dropwise (46.96mol), and the time of dropping was controlled to be 1h, and then reacted at 0°C for 1h under the protection of nitrogen, and the temperature was raised to 50°C for 10h. After monitoring the completion of the reaction, add 100L of ice water to quench, then extra...

Embodiment 2～6

[0116] Embodiment 2~6 uses carbazole and triphenylamine as the preparation method of the photosensitive dye of the D-D-π-A structure of two-stage electron donor

[0117] Examples 2 to 6 are respectively a method for preparing a photosensitive dye with a D-D-π-A structure using carbazole and triphenylamine as two-stage electron donors. Their steps are basically the same as in Example 1, except that The difference in process parameters, see Table 1 for details:

[0118] List of each process parameter in table 1 embodiment 2~6

[0119]

[0120]

[0121]

[0122]

[0123]

[0124]

Embodiment 3

[0126] In Example 3, the proton nuclear magnetic characterization data of the prepared intermediate I are: 1 H NMR (300MHz, CDCl 3 )δ9.80(s, 1H), 7.67(d, J=9.0Hz, 2H), 7.37-7.30(m, 4H), 7.20-7.14(m, 6H), 7.01(d, J=9.0Hz, 2H ).

[0127] Intermediate I prepared in Examples 4 and 6 have the same proton nuclear magnetic data as Intermediate I prepared in Example 3.

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Abstract

The invention belongs to the field of solar cells, and discloses a D-D-pi-A structure photosensitive dye taking carbazole and triphenylamine as two-stage electron donors as well as a preparation method and application thereof. The photosensitive dye takes carbazole and triphenylamine as two-stage electron donors, a furan group or a benzene ring group as a pi conjugate bridge, and a cyanoacetic acid group as an electron acceptor. The photosensitive dye is used for preparing a dye-sensitized solar cell. The photosensitive dye is stable in structure, the absorption spectrum of the dye can be effectively broadened, and the photoelectric conversion efficiency of the dye is improved. The preparation method is simple, the process is easy to control, the raw materials are wide in source and low inprice, the preparation process is environmentally friendly and free of pollution, and the obtained photosensitive dye is high in purity and yield and suitable for industrial production. The photosensitive dye provided by the invention is used for preparing a photosensitized solar cell.

Description

technical field [0001] The invention belongs to the field of solar cells, and relates to a photosensitive dye, in particular to a photosensitive dye with a D-D-π-A structure using carbazole and triphenylamine as two-stage electron donors, and a preparation method and application thereof. Background technique [0002] With the rapid development of society, energy structure problems, environmental pollution and destruction have become serious problems to be solved urgently in today's society. As a global issue of sustainable development, seeking and utilizing an economical renewable energy has become the consensus of all countries in the world. As an inexhaustible and inexhaustible clean energy, the importance of its development and utilization Day by day. Therefore, the development of cheap and high-efficiency solar cells has become a trend. [0003] Research on solar cells dates back to the 19th century, and academics have been working to improve their performance since th...

Claims

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Application Information

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IPC IPC(8): C09B57/00C07D405/12C07D405/04C07D209/86H01G9/20
CPCC07D209/86C07D405/04C07D405/12C09B57/00H01G9/2059Y02E10/542Y02P70/50
Inventor 吕海军王子卉于奕峰陈爱兵靳根根王婷婷卢世贤
Owner HEBEI UNIVERSITY OF SCIENCE AND TECHNOLOGY
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