Preparation of squaraine dye-sensitized nanocrystalline film electrode

A technology of dye sensitization and squaraine, applied in nanostructure manufacturing, nanotechnology, nanotechnology, etc., can solve the problems of many by-products and difficult product separation

Inactive Publication Date: 2010-06-30
JIANGNAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The squaraine dye synthesized by directly mixing the raw materials in one step has many by-products and it is very difficult to separate the products

Method used

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  • Preparation of squaraine dye-sensitized nanocrystalline film electrode
  • Preparation of squaraine dye-sensitized nanocrystalline film electrode
  • Preparation of squaraine dye-sensitized nanocrystalline film electrode

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] Intermediate 1: Synthesis of 2,3,3-trimethyl-3H-indoleacetic acid

[0036]

[0037] Mix 3.2g (0.02mmol) of p-aminophenylacetic acid and 10ml of concentrated hydrochloric acid. 10ml of ice water was added dropwise into an ice solution containing sodium nitrite (1.38g, 0.02mol) at 0°C, reacted at 0°C for 1 hour, filtered rapidly, and collected the filtrate. Drop into 10ml of hydrochloric acid solution containing stannous chloride dihydrate (23.00g, 0.06mol) at 0°C, stir for 1 hour, then freeze overnight, filter the reaction solution the next day, and use saturated sodium chloride solution, petroleum The mixture of ether and diethyl ether (2:1:1) was washed to obtain a pink solid, 3.0 g, yield 60%.

Embodiment 2

[0039]Intermediate 2: Synthesis of 1-carboxypentyl-5-carboxymethyl-2,3,3-trimethyl-3H-indole-bromide salt

[0040]

[0041] Add 3.2g (20mmol) 2,3,3-trimethyl-3H indole acetic acid and 6.44g (20mmol) 1-iodoethane-3,5-dinitrobenzene and 10ml toluene into a 100ml round bottom flask, Under the protection of nitrogen, reflux and stir at 110° C. for 14 hours, let it stand still, precipitates out, and filter to obtain a filter cake. Alternate washing with diethyl ether and acetone gave 2.3 g of a red solid with a yield of 50%.

Embodiment 3

[0043] Intermediate 3: Synthesis of 1-p-carboxybenzyl-5-carboxymethyl-2,3,3-trimethyl-3H-indole bromide

[0044]

[0045] Mix 3.2g (20mmol) of intermediate 1, 3.4g (20mmol) of p-carboxybenzyl bromide, and 10ml of toluene, under nitrogen protection, reflux and stir at 110°C for 14 hours, let stand, precipitate out, and collect the solid. Washed alternately with ether and acetone to obtain 2.3 g of a red solid with a yield of 50%.

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Abstract

The invention designs and combines a squaraine dye with excellent performance, which is used in a dye-sensitized solar battery to obtain good performance test result of a photocell. An asymmetrical squaraine dye sensitizer used by the invention is compounded by adopting a fractional step method, the designed molecules are reasonable, and the molecule has high light stability. The compounded target product contains less by products, and is easy to separate and purify. All the designed squaraine dye molecules contain carboxyl, can form adsorption with the surface of a nanocrystalline film electrode, and have good application prospect in the photoelectric material field or the biomolecules detection field.

Description

technical field [0001] The invention belongs to the field of solar cell high-tech materials. Background technique [0002] In recent years, with the intensification of the energy crisis, the development of new energy has become the focus of research in various countries. Solar energy is a renewable energy source, and solar photovoltaic cells, as a device that converts light energy into electrical energy, have emerged as the times require. A solar cell is a device that converts solar energy into electrical energy. However, the monocrystalline silicon and polycrystalline silicon solar cells that have been industrialized are not conducive to large-scale use because of their high cost and easy corrosion by light. Organic dye-sensitized solar cells have the advantages of low cost, simple manufacturing process, and not easy to be corroded, and have attracted extensive attention from research institutions in various countries. Organic dye-sensitized solar cells have many requireme...

Claims

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Application Information

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IPC IPC(8): H01G9/042H01G9/20H01M14/00B82B3/00
CPCY02E10/542Y02P70/50
Inventor 陈秀英赵小琴
Owner JIANGNAN UNIV
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