Preparation method of dye sensitizer for organic solar cells
A technology of solar cells and dye sensitizers, applied in the field of dye sensitizers, can solve the problems of limited resources, expensive prices, practical applications, etc.
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Embodiment 1
[0062] Example 1: Synthesis of organic solar cell dye sensitizer with chemical structural formula 1 and its application in organic dye-sensitized solar cells.
[0063] A kind of organic solar cell dye sensitizer whose chemical structural formula is 1, its synthetic route is as follows:
[0064]
[0065] (1) chemical structural formula is the synthesis of the intermediate of a:
[0066] In the 100ml three-neck round bottom flask, add 0.63g (1.67mmol) pinacol-(4-(N, N-di-toluidyl)-1-phenyl) borate successively, 0.47g (2.29mmol) 5 -Bromo-4-methyl-2-thiophenecarbaldehyde, 0.276g (2mmol)K 2 CO 3 , vacuum, pass N 2 Protection, inject 15m L DMF then, after stirring for about 15min, add 100mg palladium catalyst rapidly in reaction bottle, N 2 Protected and heated to reflux for 30h. After the reaction stopped, add about 50mL of distilled water to the reaction liquid, then extract with dichloromethane, wash with water, anhydrous MgSO 4 After drying, column chromatography was ca...
Embodiment 2
[0071] Example 2: Synthesis of organic solar cell dye sensitizer with chemical structural formula 2 and its application in organic dye-sensitized solar cells.
[0072] The synthetic route of the organic solar cell dye sensitizer whose chemical structural formula is 2 is as follows:
[0073]
[0074] (1) chemical structural formula is the synthesis of the intermediate of b:
[0075] In the 100ml three-neck round bottom flask, add 0.63g (1.67mmol) pinacol-(4-(N, N-di-toluidyl)-1-phenyl) borate successively, 0.57g (2.29mmol) 5 -Bromo-3,4-dioxethylene-2-thiophenecarbaldehyde, 0.276g (2mmol)K 2 CO 3 , vacuum, pass N 2 Protection, inject 15ml DMF then, after stirring for about 15min, add 100mg palladium catalyst rapidly in reaction bottle, N 2 Heated to reflux under protection for 36h. After the reaction is stopped, add about 50ml of distilled water to the reaction solution, then extract with dichloromethane, wash with water, anhydrous MgSO 4 After drying, column chromatogr...
Embodiment 3
[0080] Example 3: Synthesis of organic solar cell dye sensitizer with chemical structural formula 3 and its application in organic dye-sensitized solar cells.
[0081] The synthetic route of the organic solar cell dye sensitizer whose chemical structural formula is 3 is as follows:
[0082]
[0083] (1) Synthesis of intermediate c:
[0084] Add 6.3g (50mmol) 5-methylthiophene-2-aldehyde and 1.883g (17mmol) 2-thiophene carboxaldehyde in a 500mL four-necked flask, add 250mL propionic acid, heat to reflux and cool slightly, and drop in 4.56g ( 68mmol) pyrrole, continue to reflux for 1h. Cool down after stopping the reaction, and distill off most of the propionic acid under reduced pressure. Then add the same volume of methanol as the distilled propionic acid for recrystallization, and freeze overnight. It was suction filtered the next day to obtain a purple-black solid. Use dichloromethane as the developing agent to separate the purple-black solid on a silica gel column to...
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