Oxygen/sulfur alkylated bithiophene donor unit based D-A type conjugated polymer and preparation method and application thereof
A conjugated polymer, D-A technology, applied in semiconductor/solid-state device manufacturing, electrical components, electrical solid-state devices, etc., can solve the problems of high-efficiency devices such as complicated process and few types, and achieve improved solubility, good planarity, Effect of Optimizing Crystallization Properties
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[0047] Example 1
[0048] Donor unit 5-bromo-2-(5-bromo-3-(2-butyloctylthio)thiophen-2-yl)-3-(2-butyloctyloxy)thiophene (BTOSR-Br 2 ) Or 5-bromo-2-(5-bromo-3-(2-butyloctylthio)thiophen-2-yl)-3-(2-butyloctylthio)thiophene (BTSR-Br 2 )Synthesis.
[0049] BTOSR-Br 2 Or BTSR-Br 2 The synthetic route is as follows:
[0050]
[0051] 1.1 Synthesis of 3-(2-butyloctylthio)thiophene
[0052] In a 250mL three-neck flask, add 3-bromothiophene (8.2g, 50.31mmol), 2-butyloctane-1-thiol (11.2g, 55.34mmol), N,N-diisopropylethylamine ( 7.15g, 55.34mmol), tris(dibenzylideneacetone)dipalladium (0.416g, 0.5mmol), 1,1'-bis(diphenylphosphine)ferrocene (0.558g, 1.00mmol), toluene ( 80mL), under nitrogen protection, stirred and refluxed in an oil bath at 110°C for 24h. The reaction was stopped and cooled to room temperature. The reaction solution was poured into 60 mL of water, extracted with dichloromethane (3×30 mL), dried over anhydrous magnesium sulfate, filtered, and spin-dried under reduced pressure ...
Example Embodiment
[0065] Example 2
[0066]
[0067] PBTOSR-FBTA
[0068] Synthesis of polymer PBTOSR-FBTA
[0069] In a 10mL single-mouth bottle, add BTOSR-Br sequentially 2 (0.15g, 0.21mmol), 2-(2-ethylhexyl)-5,6-difluoro-4,7-bis(5-(trimethylstannyl)thienyl)-2H-benzo(d ][1,2,3]Triazole (0.16g, 0.21mmol), Tris(dibenzylideneacetone)dipalladium (5.8mg), Tris(o-tolyl)phosphorus (7.72mg), HPLC toluene 6mL, Liquid nitrogen is frozen and pumped to discharge oxygen. After each freeze pumping, it is thawed and repeated three times. The reaction is placed in a 110°C thermostat and the reaction changes are constantly observed. After the reaction is stopped, it is diluted with chlorobenzene and settled in methanol, filtered by suction, and the crude product (methanol-ether-acetone-dichloromethane-chloroform-chlorobenzene) is extracted and washed by Soxhlet. After concentration, it is purified by flash column chromatography. Concentrate, settle with methanol, filter with suction, and dry in vacuo to obtain 16...
Example Embodiment
[0070] Example 3
[0071] Synthesis of polymer PBTSR-FBTA
[0072]
[0073] PBTSR-FBTA
[0074] The synthesis and purification steps of polymer PBTSR-FBTA are the same as those of polymer PBTSR-FBTA. Finally, 118 mg of black solid product was obtained.
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