Rubbing-Induced Molecular Orientation and Polarized Electroluminescence in Conjugated Polymer
Rubbing-Induced Molecular Orientation and Polarized Electroluminescence in Conjugated Polymer
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共轭聚合物中摩擦诱导的分子取向和偏振电致发光
DOI：
10.1143/jjap.34.l712
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发表时间：
1995
影响因子：
1.5
通讯作者：
Katsumi Yoshino Katsumi Yoshino
中科院分区：
文献类型：
--
作者：
M. Hamaguchi;Katsumi Yoshino Katsumi Yoshino
偶联聚合物聚（2,5-二酰氧基-1,4-苯基乙烯）（NO-PPV）的分子取向可以通过对其薄膜进行单向摩擦处理而得到。结果表明，摩擦后的NO-PPV薄膜具有二向色比为1.6的极化电致发光、各向异性光吸收和光致发光。对摩擦后NO-PPV薄膜的取向分布进行了分析，发现有取向层和无取向层都发生了辐射衰减。表面几何测量表明，即使在刚性主链结构的共轭聚合物中，聚合物沿摩擦方向的塑性变形也是产生优先取向的原因。
A preferred molecular orientation in a conjugated polymer, poly(2,5-dinonyloxy-1,4-phenylenevinylene) (NO-PPV), can be obtained by a unidirectional rubbing treatment of its thin solid film. Polarized electroluminescence with dichroic ratio of 1.6 as well as anisotropic optical absorption and photoluminescence have been observed for the rubbed NO-PPV film. An analysis of orientation distribution in the rubbed NO-PPV film suggested that radiative decay occurs in both oriented and unoriented layers. Surface geometry measurements suggested that plastic deformation of the polymer along the rubbing direction was the cause of the preferred orientation even in the conjugated polymer with rigid main chain structure.