Rhenium(I) tricarbonyl polypyridyl complex and its preparation method and use

A complex, tricarbonyl chloride technology, applied in the field of dye-sensitized solar cells, to achieve the effects of purification, good stability, and distortion

Inactive Publication Date: 2008-07-09
NANJING UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, so far, there are very few tricarbonylrhenium (I) complexes that can be used as dye photosensitizers reported in the literature.

Method used

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  • Rhenium(I) tricarbonyl polypyridyl complex and its preparation method and use
  • Rhenium(I) tricarbonyl polypyridyl complex and its preparation method and use
  • Rhenium(I) tricarbonyl polypyridyl complex and its preparation method and use

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] Example 1: Preparation of tricarbonyl chloride {4-[bis(2-pyridyl)methylene]-3,5-dithiole-1,2-dicarboxylic acid}rhenium(I)

[0025] 1.4-[bis(2-pyridyl)methylene]-3,5-dithiol-1,2-dicarboxylic acid methyl ester (A):

[0026] a. In 3,4-dimethoxycarbonyl-2,5-dithiol-3-enethione (1.00g, 4mmol) and bis(2-pyridine)methanone under nitrogen gas conditions (0.74g, 4mmol) were added 7ml of toluene and 5ml of triethoxyphosphine into the mixture, and refluxed for 6 hours. After stopping the reaction, cool to -20°C, filter, and wash with ether to obtain red crystal 4-[bis(2-pyridyl)methylene]-3,5-dithiole-1,2-dicarboxylic acid methyl Esters 0.83g, yield 53.7%. Compound by 1 H-NMR, elemental analysis, mass spectrometry, and infrared were verified, and the results showed that the structure was correct. The data are as follows:

[0027] 1 H-NMR (500MHz, CDCl 3 ,δ):

[0028] 8.79(d, J=3.6Hz, 2H) 7.72(t, 2H) 7.22(t, 2H) 7.17(d, J=7.9Hz, 2H) 3.87(s, 6H)

[0029] Elemental analysis r...

Embodiment 2

[0053] Example 2: Chlorinated tricarbonyl {4-[bis(2-pyridyl)methylene]-3,5-dithiole-1,2-dicarboxylic acid}rhenium(I) of the present invention Fluorescent characterization of

[0054] The test instrument is AMINCO Bowman Series 2 Fluorometer. Complex C of the present invention is dissolved in methanol and measured (5 × 10 -4 M). At room temperature, the excitation peak λ ex 356nm and 440nm, emission peak λ em It is 483nm (see accompanying drawing 2).

Embodiment 3

[0055] Example 3: Chlorinated tricarbonyl {4-[bis(2-pyridyl)methylene]-3,5-dithiole-1,2-dicarboxylic acid} rhenium(I) of the present invention Electrochemical characterization of

[0056] The test instrument is CHI660b electrochemical workstation. Glassy carbon electrode, platinum wire electrode, Ag / Ag + They were used as working electrode, counter electrode and reference electrode respectively. Complex C of the present invention was dissolved in DMF (5 × 10 -4 M), with 0.1Mn-Bu 4 NClO 4 For the supporting electrolyte, the scan speed is 100mV s -1 . The test results show that there is a pair of redox peaks, and the half-wave potential value is 0.82V, which is the redox potential of metal rhenium from positive one valence to positive two valence (see Figure 3).

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Abstract

A complex of rhenium is chloridization tricarbonyl{4-[two (2-pyridine) methylene]-3, 5-dithiole-1,2- dicarboxylic acid} complex rhenium (I), which has the following structure formula: The complex of chloridization tricarbonyl{4-[two (2- pyridine) methylene]-3, 5-dithiole-1,2- dicarboxylic acid} complex rhenium (I) of the invention has simple synthesis, convenient purification, higher output and excellent stability in air. As dye photosensitizer, the photoelectrochemistry date which is measured in sensitized TiO 2 nanocrystalline solar photoelectric cell show that the complex of chloridization tricarbonyl{4-[two (2- pyridine) methylene]-3, 5-dithiole-1,2- dicarboxylic acid} complex rhenium (I) has the property of dye photosensitizer, and has certain potential in the aspect of applying in dye sensitized solar cell. The invention discloses the preparation process.

Description

technical field [0001] The present invention relates to complexes of rhenium, and also relates to dye-sensitized solar cells. Background technique [0002] The use of solar photovoltaic power generation is the focus of energy utilization today. Among them, Dye Sensitized Solar Cell (DSSC) has the advantages of high theoretical photoelectric conversion efficiency, low cost, good stability, simple production, environmental friendliness and broad application prospects, and has been widely accepted by countries all over the world. focus on. [0003] Dye-sensitized solar cells mainly refer to dye-sensitized porous nanostructured TiO 2 A type of semiconductor photoelectrochemical cell in which the film is a photoanode, and ZnO and SnO are also useful 2 etc. as TiO 2 Thin-film alternative materials for photoelectrochemical cells. It combines the advantages of dye photosensitizers and inorganic semiconductors, and is a solar cell modeled on the principle of plant chlorophyll ph...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07F15/00C07D409/14
Inventor 陈亚李育佳刘玮左景林游效曾
Owner NANJING UNIV
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