Donor–acceptor copolymers containing bithiophene and dithiophenylthienothiadiazole units with fast electrochromic response
作者:Věra Cimrová、Drahomír Výprachtický、Veronika Pokorná
DOI:10.1039/c9tc01105f
日期:——
spectroelectrochemical properties are reported and discussed in comparison to a series of D–A copolymers with various donor units and the corresponding dithiophenylthienothiadiazole (DT or EHT) acceptor units. The new copolymers, CDTDBT and CEHTDBT, exhibit interesting electrochromic behaviours with fast response times, which reach full optical contrast in 0.3 s. These new copolymers have the potential
新型低带隙供体-受体(D–A)功能共聚物CDTDBT和CEHTDBT,由3,3'-二十二烷基-2,2'-联噻吩供体和4,6-双(3'-十二烷基噻吩-2')组成-yl)thieno [3,4- c ] [1,2,5]噻二唑(DT)或4,6-双(3'-(2-乙基己基)噻吩-2'-yl)thieno [3,4-通过相应共聚单体的斯蒂勒偶联,分别合成了c ] [1,2,5]噻二唑(EHT)受体结构单元。癸基或分支的2-乙基己基链连接到4,6-双(3'-烷基噻吩-2'-基)噻吩并[3,4- c ]噻吩上的影响]] [1,2,5]噻二唑在光物理,热致变色,电化学和光谱电化学性质上的报道和讨论,与一系列具有各种供体单元和相应的二硫代苯基噻吩并噻二唑(DT或EHT)受体单元的D–A共聚物进行了比较。新的共聚物CDTDBT和CEHTDBT表现出令人感兴趣的电致变色行为,响应时间短,可在0.3 s内达到完全的