π-Conjugated polyphenylene gels with charge transfer structures assisted by TCNQ

被引：1
|
作者：
Yamaguchi, Isao [1 ]
Mizoguchi, Naotaka [1 ]
机构：
[1] Shimane Univ, Fac Sci & Engn, Dept Mat Sci, 1060 Nishikawatsu, Matsue, Shimane 6908504, Japan
来源：
REACTIVE & FUNCTIONAL POLYMERS | 2011年 / 71卷 / 12期
关键词：
pi-Conjugated polyphenylene; Gel; TCNQ; Charge transfer; FUNCTIONALIZED POLYTHIOPHENES; POLYMER; FLUORESCENCE; ORGANIZATION; CELLS; UNITS;
D O I：
10.1016/j.reactfunctpolym.2011.09.007
中图分类号：
O69 [应用化学];
学科分类号：
081704 ;
摘要：
The reaction of pi-conjugated poly(p-phenylene)s (PPPs) consisting of 2- or 3-amino-1,4-phenylene (NH2Ph) and 2,5-dioctyloxy-1,4-phenylene (OctPh) or 9,9-dihexylfluorene-2,7-diyl (HexFlu) rings [polymer-1: (NH2Ph-OctPh)(n) and polymer-2: (NH2Ph-HexFlu)(n)] with 7,7,8,8-tetracyanoquinodimethane (TCNQ) yielded gel-1 and gel-2. These gels were form through a charge transfer (CT) between the NH2 group and TCNQ causing the gels to be linked by a TCNQ dianion. ESR measurements suggest that radical species generated by CT in the gels are delocalized in the pi-conjugated polymer backbone. UV-vis measurements revealed that CT between the NH2 group and TCNQ was essential for gel formation. When a dimethyl sulfoxide (DMSO)/TCNQ solution was added to a chloroform solution of the polymers, the absorption corresponding to CT bands increased with an increasing amount of TCNQ. Photoluminescence (PL) measurements suggested that TCNQ served as a quencher for fluorescent polymer-1 and polymer-2. Quenching behavior was investigated by Stern-Volmer analysis. (C) 2011 Elsevier Ltd. All rights reserved.
引用
收藏
页码：1166 / 1171
页数：6
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