Temperature Depenndence of the Doping Effect of Poly(3-alkylthiophene) and Polaronic State
Temperature Depenndence of the Doping Effect of Poly(3-alkylthiophene) and Polaronic State
复制标题
聚（3-烷基噻吩）掺杂效应和极化子态的温度依赖性
DOI：
10.1143/jpsj.58.1895
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发表时间：
1989
影响因子：
1.7
通讯作者：
K. Yoshino
中科院分区：
文献类型：
--
作者：
M. Onoda;Y. Manda;S. Morita;K. Yoshino
聚（3-烷基噻吩）如聚（3-二十二烷基噻吩）的吸收光谱在固-液相转变时发生变化。这一现象可以解释为由于在液态下聚合物主链上相邻噻吩环之间存在一些扭曲键而导致有效共轭长度的变化。从固相和液相中的循环伏安图的测量，确认价带的顶部位于更高的能量在液体状态。极化子态的形成，即使在液体状态下，已澄清从掺杂后的吸收光谱的急剧变化。给出了聚（3-烷基噻吩）在固态和液态下的简单能带图。
The absorption spectrum of poly(3-alkylthiophene) such as poly(3-docosylthiophene) changes at the solid-liquid phase transition. This phenomenon can be interpreted in terms of the change of the effective conjugation length due to the existence of some twisted bonds between neighbouring thiophene rings on the polymer main chain in the liquid state. From measurements of the cyclic voltammogram in solid and liquid phases, the top of the valence band is confirmed to be located at a higher energy in the liquid state. Formation of polaronic states, even in the liquid state, has been clarified from the drastic change of absorption spectrum upon doping. A simple energy band scheme of poly(3-alkylthiophene) in the solid and liquid states is indicated.