Poly(triphenylamine-benzothiophene/furan) dyes and their applications
A technology of benzothiophene and triphenylamine, which is used in the synthesis and application of functional dyes, can solve the problems of low photoelectric conversion efficiency, achieve the effects of improving charge mobility, good light absorption capacity, and improving migration efficiency
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Embodiment 1
[0053] Synthesis of polymer dye sensitizer with structural unit of formula II and application in dye-sensitized solar cells.
[0054] The synthetic route is as follows:
[0055]
[0056] Synthesis of intermediate (2):
[0057] Add 12.96g of 4-bromotriphenylamine, 12.4g of 5-formyl-2-thiophene boronic acid, and 27.6g of anhydrous potassium carbonate into the reaction flask, then add 100mL of toluene, 100mL of methanol, and add the catalyst ferrocene di palladium chloride. Heated to 70°C and followed the reaction to completion. The reaction was quenched by adding 150 mL of water and extracted with dichloromethane. The organic layers were combined, dried over anhydrous sodium sulfate, and filtered. The crude product was separated and purified by column chromatography (silica gel column, eluent: n-hexane / dichloromethane=4 / 1) to obtain pure intermediate 2 as a yellow solid with a yield of 60.2%.
[0058] NMR characterization data of intermediate (2):
[0059] 1 H NMR (CDC...
Embodiment 2
[0089] Synthesis of polymer dye sensitizer with structural unit of formula III and application in dye-sensitized solar cells.
[0090] The synthetic route is as follows:
[0091]
[0092]
[0093] Synthesis of intermediate (2):
[0094] Add 12.96g of 4-bromotriphenylamine, 12.4g of 5-formyl-2-thiophene boronic acid, and 27.6g of anhydrous potassium carbonate into the reaction flask, then add 100mL of toluene, 100mL of methanol, and add the catalyst ferrocene di palladium chloride. Heated to 70°C and followed the reaction to completion. The reaction was quenched by adding 150 mL of water and extracted with dichloromethane. The organic layers were combined, dried over anhydrous sodium sulfate, and filtered. The crude product was separated and purified by column chromatography (silica gel column, eluent: n-hexane / dichloromethane=4 / 1) to obtain pure intermediate 2 as a yellow solid with a yield of 60.2%.
[0095] NMR characterization data of intermediate (2):
[0096] ...
Embodiment 3
[0126] Synthesis of polymer dye sensitizer with structural unit of formula IV and application in dye-sensitized solar cells.
[0127] The synthetic route is as follows:
[0128]
[0129] Synthesis of intermediate (2):
[0130] Add 12.96g of 4-bromotriphenylamine, 12.4g of 5-formyl-2-thiophene boronic acid, and 27.6g of anhydrous potassium carbonate into the reaction flask, then add 100mL of toluene and 100mL of methanol, and add the catalyst ferrocene di palladium chloride. Heated to 70°C and followed the reaction to completion. The reaction was quenched by adding 150 mL of water and extracted with dichloromethane. The organic layers were combined, dried over anhydrous sodium sulfate, and filtered. The crude product was separated and purified by column chromatography (silica gel column, eluent: n-hexane / dichloromethane=4 / 1) to obtain pure intermediate 2 as a yellow solid with a yield of 60.2%.
[0131] NMR characterization data of intermediate (2):
[0132] 1 H NMR (...
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