新型含供体-受体单元的聚对苯撑乙炔光伏材料的合成及性能研究  

Synthesis and Characterization of Some Novel Phenylene-bi(ethynylene)Based Copolymers Containing Donor-Acceptor Segments for Photovoltaic Materials

作　　者：陈浩[1] 蔡显荣[1] 张涛[1] 徐志刚[1] 宋保风[1] 李瑛[1] 蒋青[1] 谢明贵[1] 

机构地区：[1]四川大学化学学院,成都610064

出　　处：《化学学报》2008年第7期788-792,共5页Acta Chimica Sinica

基　　金：教育部重点项目(No.105142);教育部博士点基金(No.2030610069);四川省青年科技基金(No.03SQ04)资助项目

摘　　要：通过钯催化的Heck偶联缩聚反应,合成了两种新的主链含对苯二乙炔,2-吡喃-4-烯-丙二腈衍生物的共轭聚合物.研究了其紫外-可见吸收特性及电化学性质,并考察了聚合物和TiO2组成的体相异质结薄膜的荧光性质.研究结果表明,目标聚合物的紫外吸收比相应的聚对苯撑乙烯/对苯撑乙炔(PPV/PEE)聚合物红移了约80nm,表明该体系的光谱吸收能更好地与太阳光谱能量分布相匹配.聚合物和TiO2组成的体相异质结薄膜随着TiO2量的增加荧光逐渐减弱,表明它们之间存在强的光诱导电子效应.A series of novel copolymers derived from phenylene-bi（ethynylene） and 2-（pyran-4- ylidene）-malononitrile were synthesized successfully through a palladium-catalyed Heck-cross coupling reaction. The electrochemical and photophysical properties were investigated, and the results show that these copolymers are red-shifted 80 nm compared with poly（phenylene-vinylene）/poly（phenylene-ethynylene）, which indicated that their spectral response was more matching with the solar-terrestrial radiation. The PL spectra of copolymer P2：TiO2 bulk-heterojunction decreased with increasing amount of Ti（OC3HT）4 compared to that of a pristine copolymer film. This indicates the existence of strong photoinduced electronic interactions between the polymers P2 and TiO2.

关 键 词：共轭聚合物 太阳电池材料 荧光淬灭 合成 

分 类 号：TM910.4[电气工程—电力电子与电力传动]