Block conjugated copolymers: Toward quantum-well nanostructures for exploring spatial confinement effects on electronic, optoelectronic, and optical phenomena

被引:85
作者
Chen, XL
Jenekhe, SA
机构
[1] UNIV ROCHESTER,DEPT CHEM ENGN,ROCHESTER,NY 14627
[2] UNIV ROCHESTER,CTR PHOTOINDUCED CHARGE TRANSFER,ROCHESTER,NY 14627
关键词
D O I
10.1021/ma9605715
中图分类号
O63 [高分子化学(高聚物)];
学科分类号
070305 ; 080501 ; 081704 ;
摘要
An ABA triblock conjugated copolymer, poly(2,5-benzoxazole)-block-poly(benzobisthiazole-2,6-diyl-1,4-phenylene)-block-poly(2,5-benzoxazole), 1, was synthesized, characterized, and used to demonstrate spatial confinement effects on the electronic structure and the optical and optoelectronic properties of block copolymers. Optical absorption, photoluminescence, and photoluminescence excitation spectra of thin films of the triblock copolymer evidence spatial confinement of excitons as well as microphase separation. Efficient energy transfer via interchain and intrachain mechanisms was observed in the triblock conjugated copolymer. The results suggest that microphase separation in hulk block conjugated copolymers can significantly modify the spatial modulation and confinement dimensionalities expected in isolated block copolymer chains.
引用
收藏
页码:6189 / 6192
页数:4
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