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Method for synthesizing visible/near infrared porphyrin used for dyestuff sensitization solar energy battery and application thereof

A compound, dithioporphyrin technology, applied in the field of sensitizers, can solve problems such as failure to reach, and achieve the effect of improving absorption rate and conversion efficiency

Inactive Publication Date: 2008-08-06
NANJING UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, even the meso-tetraphenyl-β-2,3,12,13-tetraphenyl-21,23-dithioporphyrin whose four meso and four beta positions are substituted by benzene rings The maximum absorption peak is only 454nm, less than 500nm

Method used

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  • Method for synthesizing visible/near infrared porphyrin used for dyestuff sensitization solar energy battery and application thereof
  • Method for synthesizing visible/near infrared porphyrin used for dyestuff sensitization solar energy battery and application thereof
  • Method for synthesizing visible/near infrared porphyrin used for dyestuff sensitization solar energy battery and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0042] Embodiment 1: 5,10,15,20-tetrakis(4-methyl carboxylate)phenyl-diphenanthrene[9,10-b:9,10-l]-22,24-dithioporphyrin ( Synthesis of 1b):

[0043] Add 1mmol (412mg) 2,5-bis((4-benzoic acid ethyl ester) hydroxymethyl) thiophene, 1mmol (217mg) phenanthropyrrole and 100ml anhydrous dichloromethane in a 250ml round bottom flask, put the magnetic Start stirring, put the reaction bottle into a low-temperature device under the protection of argon and avoid light, control the reaction temperature at -30°C, and add a total of 80 μl of catalyst BF 3 ·Et 2 O, make it react at low temperature for 1 hour, then allow it to naturally heat up to 25° C., and continue the reaction for 48 hours. 1 mmol (227 mg) of DDQ was added to the reaction solution and reacted for 2 hours. The solvent was distilled off under reduced pressure for chromatographic separation, and purple-black crystal 1 was obtained after recrystallization from methanol and chloroform, with a yield of 15%; melting point > ...

Embodiment 2

[0044] Example 2: 5,10,15,20-tetrakis(4-methylbenzoate)phenyl-diphenanthrene[9,10-b:9,10-l]-22,24-dithioporphyrin Synthesis of (1b):

[0045] The method is the same as in Example 1, except that the reaction solvent dichloromethane is replaced by chloroform to carry out the reaction operation, and the yield is 15%.

Embodiment 3

[0046] Example 3: 5,10,15,20-tetrakis(4-methylbenzoate)phenyl-diphenanthrene[9,10-b:9,10-l]-22,24-dithioporphyrin Synthesis of (1b):

[0047] The method is the same as in Example 1, except that the amount of the reaction solvent dichloromethane is changed to 50ml for the reaction operation, and the productive rate is 13%.

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Abstract

The invention discloses a sensitization dye for sensitization nanocrystalline solar cell, with better adsorption above 500nm, a preparation method of center decorated porphyrin which median phenyl is provided with carboxyl or ester substitution and beta position is provided with phenanthrene ring conjugation and an application, wherein the Soret band has 507nm, the porphyrin is provided with carboxyl, therefore, the compound can be combined firmly with semi-conductive material as nanometer TiO2 to produce solar cell, with improved solar light adsorption. Test proves that the photoelectric conversion efficiency of dye sensitization solar cell can reach 0.32%.

Description

1. Technical field [0001] The invention relates to a sensitizer for dye-sensitized solar cells, in particular to 5,10,15,20-tetrakis(4-carboxy)phenyl-diphenanthrene[9,10-b:9,10 -l]-22,24-dithioporphyrin and its precursor preparation method and its application in solar cells. 2. Background technology [0002] The energy crisis is an urgent problem faced by human beings for survival and development. As an inexhaustible, widely distributed and environment-friendly energy source, the voice of development and utilization of solar energy is getting higher and higher. Solar cells are an important way to utilize solar energy. Solar cells can be classified into silicon solar cells, inorganic semiconductor solar cells and organic solar cells according to their materials. In the current market, the first two solar cells have advantages, but the preparation and processing of these two inorganic materials are demanding, the process is complicated, the raw materials are limited, the pri...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07D495/22H01L51/00H01L51/30H01L51/46H10K99/00
CPCY02E10/549
Inventor 沈珍薛兆历吴迪游效曾
Owner NANJING UNIV
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