Synthesis of Polythiophene with a Photo-Crosslinkable Side Chain
Synthesis of Polythiophene with a Photo-Crosslinkable Side Chain
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DOI：
10.1080/15421406.2015.1075826
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发表时间：
2015-08
影响因子：
0.7
通讯作者：
T. Kosaka;T. Ube;M. Haga;T. Ikeda
中科院分区：
文献类型：
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作者：
T. Kosaka;T. Ube;M. Haga;T. Ikeda
为了提高有机光伏电池(OPV)的稳定性，我们合成了一种带有肉桂酸官能团的光交联型聚噻吩型共聚物。OPV电池的有源层通常是由两个或两个以上有机半导体组成的体异质结(BHJ)。当BHJ与两种有机材料混合形成微观相分离结构时，经过一段时间后，其结构倾向于转变为宏观相分离结构。为了稳定BHJ的形态，我们使用了一种含有肉桂酸酯部分的可交联聚合物。紫外光照射后，由于肉桂酸酯基团的[2+2]二聚化，共聚膜变得不溶。
We have synthesized a photo-crosslinkable polythiophene copolymer functionalized with a cinnamate moiety to improve the stability of organic photovoltaic (OPV) cells. The active layer of OPV cells is generally bulk heterojunction (BHJ) that consists of two or more organic semiconductors. When BHJ forms a micro-phase-separated structure with a blend of two organic materials, its structure inclines to change into a macro-phase-separated one after some time. To stabilize the BHJ morphology, we used a crosslinkable polymer containing a cinnamate moiety. The copolymer film became insoluble after UV irradiation because of [2+2] dimerization of the cinnamate groups.