STRUCTURAL-CHANGES IN THE THERMOCHROMIC SOLID-STATE PHASE-TRANSITION ON POLY(3-ALKYLTHIOPHENE)

被引:35
作者
TASHIRO, K [1 ]
ONO, K [1 ]
MINAGAWA, Y [1 ]
KOBAYASHI, K [1 ]
KAWAI, T [1 ]
YOSHINO, K [1 ]
机构
[1] OSAKA UNIV,FAC ENGN,DEPT ELECTR ENGN,SUITA,OSAKA 565,JAPAN
关键词
D O I
10.1016/0379-6779(91)91135-W
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
In order to clarify the structural changes in the thermochromic phase transition, the temperature dependence of the X-ray diffraction and Fourier-transform infrared spectra was measured for the oriented and unoriented poly(3-dodecylthiophene)[P3DT]and poly(3-hexylthiophene)[P3HT]. The detailed analysis of these data lead us to support the structural model proposed before: as the temperature increases, the trans-type side chains begin to disorder by an introduction of gauche bonds. This disordering affects the regularity in the main chain conformation and decreases the effective length of the polythiophene conjugate system.
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页码:571 / 574
页数:4
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