Solvent effects on chain orientation and interchain π-interaction in conjugated polymer thin films:: Direct measurements of the air and substrate interfaces by near-edge X-ray absorption spectroscopy

被引:97
作者
Ho, Peter K. -H.
Chua, Lay-Lay
Dipankar, Mandal
Gao, Xingyu
Qi, Dongchen
Wee, Andrew T-S.
Chang, Jui-Fen
Friend, Richard H.
机构
[1] Natl Univ Singapore, Dept Phys, Singapore 117548, Singapore
[2] Univ Cambridge, Cavendish Lab, Cambridge CB3 0HE, England
关键词
D O I
10.1002/adma.200601285
中图分类号
O6 [化学];
学科分类号
0703 ;
摘要
The orientation and pi-interaction of the frontier layers of regioregular poly(3-hexyl-thiophene) at both the air and substrate interfaces are directly measured for the first time using near-edge X-ray absorption fine-structure spectroscopy for thin films cast from a series of solvents (see figure). Results suggest the already high hole mobility in this material is still substantially limited by disorder at the interfaces.
引用
收藏
页码:215 / +
页数:8
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