Relationship between polarons and optical activity for conductive polymer/hydroxypropyl cellulose composite,Journal of Polymer Science

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Relationship between polarons and optical activity for conductive polymer/hydroxypropyl cellulose composite
Journal of Polymer Science ( IF 3.9 ) Pub Date : 2020-06-08 , DOI: 10.1002/pol.20200152
Naoto Eguchi ₁ , Hiromasa Goto ₁

Affiliation

A chiroptical conjugated polymer, poly(2,2′‐bis[3,4‐ethylenedioxythiophene]‐alt‐fluorene) (poly[E‐Flu]), was synthesized by electrochemical polymerization in a hydroxypropyl cellulose (HPC) based cholesteric liquid crystal (CLC) electrolyte solution. Subsequent poly(E‐Flu) characterization was conducted using polarizing optical microscopy and atomic force microscopy, as well as electrochemical, spectroscopic, and electron spin resonance (ESR) measurements. Surface observations reveal that the poly(E‐Flu) film has a fingerprint texture, which is typical optical textures of CLCs exposed to cross‐polarization. Fingerprint texture of poly(E‐Flu) indicates that the transcription of the CLC helical structure from the CLC electrolyte solution to the conjugated polymer has occurred during the electrochemical polymerization reaction. Optical rotation dispersity and circular dichroism (CD) spectra indicated that poly(E‐Flu) is optically active and that its optical activity is reversibly changed in the electrochemical redox processes.

中文翻译：

导电聚合物/羟丙基纤维素复合材料极化子与旋光性的关系

手性光学甲共轭聚合物，聚（2,2'-双[3,4-亚乙基] -中高音芴）（聚[E-Flu]）是在基于羟丙基纤维素（HPC）的胆甾型液晶（CLC）电解质溶液中通过电化学聚合反应合成的。随后的聚（E-Flu）表征是使用偏振光学显微镜和原子力显微镜以及电化学，光谱和电子自旋共振（ESR）测量进行的。表面观察表明，聚（E-Flu）膜具有指纹纹理，这是暴露于交叉极化的CLC的典型光学纹理。聚（E-Flu）的指纹纹理表明，在电化学聚合反应期间，发生了CLC螺旋结构从CLC电解质溶液向共轭聚合物的转录。

更新日期：2020-06-08

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