Reverse polarization in charged π-conjugated oligomers -: art. no. 234702

被引：11
|
作者：
Gao, K
Liu, XJ
Liu, DS
Xie, SJ [1 ]
机构：
[1] Shandong Univ, State Key Crystal Mat, Jinan 250100, Peoples R China
[2] Shandong Univ, Sch Phys & Microelect, Jinan 250100, Peoples R China
来源：
JOURNAL OF CHEMICAL PHYSICS | 2005年 / 123卷 / 23期
关键词：
D O I：
10.1063/1.2136156
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
Single-photon excitation in a charged pi-conjugated oligomer is studied theoretically. An apparent reverse polarization is obtained through single-photon excitation, which is different from that obtained through a double-photon excitation. The polarizability is calculated and it is found that a maximum reverse polarization will appear at a suitable conjugation length. In addition, we indicate that the reverse polarization is a nonlinear behavior with the induced electric field. Effects of nondegenerate confinement and interchain interactions on the reverse polarization are also discussed.
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页数：5
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