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手性聚苯胺纳米纤维的电化学制备
Authors
周剑章
林仲华
林新华
翁少煌
Publication date
10 November 2012
Publisher
Abstract
采用恒电位电聚合法制备了樟脑磺酸(CSA)掺杂的旋光异构性聚苯胺(PANI)纳米纤维.用扫描电子显微镜(SEM)、透射电子显微镜(TEM)、紫外-可见吸收光谱(UV-Vis)和圆二色光谱(CD)对PANI纳米纤维的形貌和光学性质进行表征,结合电聚合溶液胶束平均粒径和ζ电位的测定,研究了具有旋光异构性PANI纳米纤维的形成机理和具有增强旋光异构性的原因.所制备的PANI纳米纤维具有无双螺旋结构,其形貌不随着苯胺浓度的改变而变化.不同手性樟脑磺酸掺杂制备的PANI纳米纤维具有镜像对称的旋光异构性,且具有较高的椭圆偏振率.这种手性PANI纳米纤维的颜色和旋光性均可通过化学掺杂/去掺杂或电化学掺杂改变氧化还原态而呈现可逆变化
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Last time updated on 16/06/2016