Polymer and organic solar cell comprising same
A polymer and heterocyclic group technology, applied in the field of organic solar cells, can solve problems such as increasing manufacturing costs, and achieve the effects of improving efficiency, excellent crystallinity, and enhancing service life
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Embodiment 1
[0277] Example 1. Synthesis of Monomer A
[0278]
[0279] 3.1195 g (10 mmol) of 4,7-dibromo-5-fluorobenzo[c][1,2,5]thiadiazole (FBTBr 2 ), 4.2116 g (4 mmol) of monomers introduced into stannyl (Sn), 0.733 g (0.08 mmol) of tris(dibenzylideneacetone)dipalladium(0)(Pd 2 (dba) 3 ) catalyst and 0.084 g (0.32 mmol) of triphenylphosphine were put into a flask, the mixture was degassed, then 100 ml of toluene was added thereto, and the resulting mixture was reacted at 80° C. for 48 hours. After the reaction, the final product was obtained by extracting the mixture with dichloromethane, removing the solvent under reduced pressure, and subjecting the crude product to silica column purification at a ratio of hexane:dichloromethane=4:1. (dark solid, yield: 35%)
[0280] figure 2 A graph for illustrating the high performance liquid chromatography (HPLC) of the compound prepared in Example 1.
[0281] image 3 A graph illustrating the NMR spectrum of the compound prepared in Exam...
Embodiment 2
[0282] Example 2. Synthesis of Formula 1-1-1
[0283]
[0284] 1 mmol of the monomer of Example 1, 1 mmol of the Sn-introduced electron donor monomer, 0.02 mmol of tris(dibenzylideneacetone)dipalladium(0)(Pd 2 (dba) 3 ) and 0.08 mmol of triphenylphosphine were placed in a microwave-specific container, and the mixture was degassed three times for 5 minutes.
[0285]Then, 20 mL of dry toluene and 1 mL of dry dimethylformamide (DMF) were added thereto, and the mixture was reacted at 120°C for 10 minutes, at 140°C for 10 minutes, and at 150°C for 1 hour, and then cooled to normal temperature, a capping agent was added thereto, and the resulting mixture was reacted at 150° C. for 1 hour.
[0286] After the reaction, the reaction solution was precipitated in a 1:1 solution of methanol and 1M hydrochloric acid (HCl), then filtered, the filtered polymer was dissolved in chlorobenzene, and the dissolved solution was mixed with ethylenediaminetetraacetic acid (EDTA) + water (H 2 ...
Embodiment 3
[0288] Embodiment 3. Synthesis of formula 1-2-1
[0289]
[0290] 1mmol of the monomer of Example 1, 1mmol of the electron donor monomer that has introduced Sn, 0.02mmol of tris(dibenzylideneacetone)dipalladium(0)(Pd 2 (dba) 3 ) and 0.08 mmol of triphenylphosphine were put into a special microwave container, and then the mixture was degassed for 5 minutes three times.
[0291] Then, 20 mL of dry toluene and 1 mL of dry dimethylformamide (DMF) were added thereto, and the mixture was reacted at 120°C for 10 minutes, at 140°C for 10 minutes, and at 150°C for 1 hour, and then cooled to normal temperature, a capping agent was added thereto, and the resulting mixture was reacted at 150° C. for 1 hour.
[0292] After the reaction, the reaction solution was precipitated in a 1:1 solution of methanol and 1M hydrochloric acid (HCl), then filtered, the filtered polymer was dissolved in chlorobenzene, and the dissolved solution was mixed with ethylenediaminetetraacetic acid (EDTA)+ ...
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