基于刚性连接单元的双缆共轭高分子材料的合成及在单组分有机太阳能电池中的应用  

Double-cable Conjugated Polymers with Rigid Linkers for Single-component Organic Solar Cells

作　　者：方海盛 梁世洁 肖承义 夏冬冬 李韦伟 FANG Haisheng;LIANG Shijie;XIAO Chengyi;XIA Dongdong;LI Weiwei(Beijing Advanced Innovation Center for Soft Matter Science and Engineering&State Key Laboratory of Organic-Inorganic Composites,College of Materials,Beijing University of Chemical Technology,Beijing 100029,China;Institute of Applied Chemistry,Jiangxi Academy of Sciences,Nanchang 330096,China)

机构地区：[1]北京化工大学材料学院,北京软物质科学与工程高精尖创新中心&有机-无机复合材料国家重点实验室,北京100029 [2]江西省科学院应用化学研究所,南昌330096

出　　处：《高等学校化学学报》2023年第7期170-180,共11页Chemical Journal of Chinese Universities

基　　金：中国科技部(批准号:2018YFA0208504);北京市自然科学基金(批准号:JQ21006);国家自然科学基金(批准号:92163128,52073016,21905018);中央高校基本科研业务费(批准号:buctrc201828,XK1802-2);有机-无机复合材料国家重点实验室开放课题(批准号:oic-202201006);超分子结构与材料国家重点实验室开放课题(批准号:sklssm202209);江西省科学院(批准号:2022YSBG22031,2022YJC2019,2022YYB10)资助.

摘　　要：通过调节刚性连接单元中联二噻吩的烷基链区域位置,合成了两种新型双缆共轭高分子聚合物聚[2-(4-{3,3′-十二烷基-5′-[4-(1-{4-[5-(2-乙基己基)噻吩-2-基]-8-[5-(庚烷-3-基)噻吩-2-基]苯并[1,2-b∶4,5-b′]二噻吩-2-基}-4,6-二酮-4H-噻吩并[3,4-C]吡咯-5(6H)-基)苯基]-[2,2′-联噻吩]-5-基}-苯基)-9-(二十三烷-12-基)蒽[2,1,9-def∶6,5,10-d′e′f′]二异喹啉-1,3,8,10(2H,9H)-四酮](FLP7)和聚[2-(4-{4,4′-十二烷基-5′-[4-(1-{4-[5-(2-乙基己基)噻吩-2-基]-8-[5-(庚烷-3-基)噻吩-2-基]苯并[1,2-b∶4,5-b′]二噻吩-2-基}-4,6-二酮-4H-噻吩并[3,4-C]吡咯-5(6H)-基)苯基]-[2,2′-联噻吩]-5-基}-苯基)-9-(二十三烷-12-基)蒽[2,1,9-def∶6,5,10-d′e′f′]二异喹啉-1,3,8,10(2H,9H)-四酮](FLP8).这两种双缆共轭高分子聚合物基于噻吩二甲酰亚胺(TPD)给体骨架和苝酰亚胺(PBI)受体侧链.通过调控刚性连接链上烷基链的位置,使刚性链处烷基链的构象由朝外变为朝内,从而改善了聚合物的自聚集能力、薄膜形态和光电转换效率.与FLP8聚合物相比,FLP7聚合物在单组分有机太阳能电池中表现出更高的光电性能参数,实现了1.59%的能量转换效率.Two novel double-cable conjugated polymers,poly[2-(4-{3,3′-didodecyl-5′-[4-(1-{4-[5-(2-ethylhexyl)thiophen-2-yl]-8-[5-(heptan-3-yl)thiophen-2-yl]benzo[1,2-b∶4,5-b′]dithiophen-2-yl}-4,6-dioxo-4H-thieno[3,4-c]pyrrol-5(6H)-yl)phenyl]-[2,2′-bithiophen]-5-yl}phenyl)-9-(tricosan-12-yl)anthra[2,1,9-def∶6,5,10-d′e′f′]diisoquinoline-1,3,8,10(2H,9H)-tetraone)](FLP7)and poly[2-(4-{4,4′-didodecyl-5′-[4-(1-{4-[5-(2-ethylhexyl)thiophen-2-yl]-8-[5-(heptan-3-yl)thiophen-2-yl]benzo[1,2-b∶4,5-b′]dithiophen-2-yl}-4,6-dioxo-4H-thieno[3,4-c]pyrrol-5(6H)-yl)phenyl]-[2,2′-bithiophen]-5-yl}phenyl)-9-(tricosan-12-yl)anthra[2,1,9-def∶6,5,10-d′e′f′]diisoquinoline-1,3,8,10(2H,9H)-tetraone](FLP8),have been developed with bithiophene-based rigid linkers.These polymers were synthesized by adopting a thiophenedicarboximide(TPD)donor backbone and perylene biimide(PBI)acceptor side units.By adjusting the position of alkyl chains on the rigid linkers from external to interior,the self-aggregation capacity,film morphology and photoelectric conversion efficiency of the polymers were improved.Finally,the FLP7 polymer demonstrated superior photoelectric performance parameters as compared to the FLP8 polymer and achieved a power conversion efficiency of 1.59%.

关 键 词：双缆共轭高分子 刚性链 自聚集 单组分有机太阳能电池 

分 类 号：O631[理学—高分子化学]