Alkyl bithiophene-2-fluorobenzene-bridged triphenylamine co-sensitizer and preparation method thereof

A technology of triphenylamine co-sensitizer and alkyl bithiophene, which is applied in the field of organic dyes, can solve the problems of narrow absorption band, large molar absorptivity, and weak absorption, and achieve the effects of enhanced absorption, strong absorption, and simple preparation method

Pending Publication Date: 2019-05-24
SHAANXI SCI TECH UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Ruthenium-complexes and organic dyes are the two most commonly used photosensitive dyes. Ruthenium-complexes have a wide absorption band that can cover the entire visible light region and even extend to the near-infrared region, but their absorption in the

Method used

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  • Alkyl bithiophene-2-fluorobenzene-bridged triphenylamine co-sensitizer and preparation method thereof
  • Alkyl bithiophene-2-fluorobenzene-bridged triphenylamine co-sensitizer and preparation method thereof
  • Alkyl bithiophene-2-fluorobenzene-bridged triphenylamine co-sensitizer and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0032] Example 1

[0033] 1. Preparation of compound of formula 1-1

[0034] Add 50mL chloroform to a single-necked flask, then add 6.68g (20mmol) 4,4'-dihexyl-2,2'-bithiophene, 1.74g (11mmol) liquid bromine, react at 70℃ for 4 hours, and cool to room temperature , Then add 50mL saturated sodium bicarbonate aqueous solution, separate the liquids, wash the organic phase with distilled water to neutrality, dry with anhydrous magnesium sulfate, evaporate the solvent, and purify the residue by column chromatography (eluent is petroleum ether) to obtain The compound of formula 1-1 is 5.76 g, and the yield is 70%. The chemical reaction equation is as follows:

[0035]

[0036] 2. Preparation of compound of formula 2-1

[0037] Under the protection of nitrogen, 32mL of tetrahydrofuran and 8mL of water were added to a three-necked round bottom flask, and 4.12g (10mmol) of formula 1-1 compound, 1.85g (11mmol) 3-fluoro-4-formylphenylboronic acid, 0.8g ( 11mmol) sodium bicarbonate, 0.4g (0.50...

Example Embodiment

[0049] Example 2

[0050] In step 1 of Example 1, the 4,4'-dihexyl-2,2'-bithiophene used was replaced with equimolar 4,4'-dimethyl-2,2'-bithiophene, and the other steps As in Example 1, a methylbithiophene-2-fluorobenzene bridged triphenylamine co-sensitizer with the following structural formula was prepared.

[0051]

Example Embodiment

[0052] Example 3

[0053] In step 1 of Example 1, the 4,4'-dihexyl-2,2'-bithiophene used was replaced with equimolar 4,4'-didecyl-2,2'-bithiophene, and other steps As in Example 1, a decylbithiophene-2-fluorobenzene bridged triphenylamine co-sensitizer with the following structural formula was prepared.

[0054]

[0055] In order to prove the beneficial effects of the present invention, the inventors dissolved the co-sensitizers prepared in Examples 1 to 3 in dichloromethane to prepare 10 -5 mol / L dichloromethane solution of co-sensitizer, using UV-Vis spectrometer (Hitachi U-3900 / 3900H) to measure the ultraviolet absorption spectrum of co-sensitizer, the maximum absorption wavelength range is 380~420nm, and the molar extinction coefficient range is 30000~50000M -1 cm -1 .

[0056] In addition, the inventors used the co-sensitizers prepared in Examples 1 to 3 to prepare dye-sensitized solar cells, and the specific preparation methods are as follows:

[0057] TiO 2 The working electro...

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Abstract

The invention discloses an alkyl bithiophene-2-fluorobenzene-bridged triphenylamine co-sensitizer and a preparation method thereof. The structural formula of the co-sensitizer is shown in the description, wherein R in the formula represents C1-C10 alkyl. The preparation method of the co-sensitizer is simple, the absorption degree in an ultraviolet area is high, and the co-sensitizer can be used for preparing a dye-sensitized solar cell. The absorption of ruthenium-complex photosensitive dyes in the ultraviolet area is enhanced, and the photoelectric performance of the dye-sensitized solar cellcan be improved.

Description

technical field [0001] The invention belongs to the technical field of organic dyes, and in particular relates to an alkyl bithiophene-2-fluorobenzene-bridged triphenylamine co-sensitizer for preparing dye-sensitized solar cells and a preparation method thereof. Background technique [0002] With the increasing human demand for energy and the emergence of environmental problems such as the greenhouse effect, the development of new renewable energy has received great attention from governments. Due to the low manufacturing cost, high photoelectric conversion efficiency and simple process of dye-sensitized solar cells, this type of cells is a focus of laboratory basic research and industrial application development. [0003] In the components of dye-sensitized solar cells, photosensitizing dyes are responsible for capturing photoelectrons and sending TiO 2 The conduction band injects electrons and other important functions, so the photosensitive dye directly affects the photo...

Claims

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Application Information

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IPC IPC(8): C07D333/24C09B57/00H01G9/20
CPCY02E10/542Y02P70/50
Inventor 靳玲侠葛红光赵蔡斌卢久富
Owner SHAANXI SCI TECH UNIV
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