手性聚苯胺的制备及其电磁学性能研究  

Preparation and Electromagnetic Properties of Chiral Conducting Polyaniline

作　　者：朱俊廷[1] 黄艳[1] 周祚万[1] 

机构地区：[1]西南交通大学材料科学与工程学院材料先进技术教育部重点实验室,成都610031

出　　处：《材料导报》2009年第12期32-35,共4页Materials Reports

基　　金：国家自然科学基金(90305003);高等学校博士点专项基金(20060613004)

摘　　要：采用二次掺杂法制备了具有手征特性的聚苯胺,利用傅立叶红外光谱(FT-IR)、X射线衍射仪(XRD)、圆二色谱仪(CD)和紫外-可见光分光光度计(UV-vis)等分析手段对聚苯胺的结构、性能和手征特性进行了表征。结果表明,通过过硫酸铵作引发剂、盐酸掺杂获得了导电的盐酸掺杂态聚苯胺(PANI-HCl);通过氨水脱掺杂后得到本征态聚苯胺(EB),EB通过手性樟脑磺酸(CSA)诱导,形成了手征性螺旋构型聚苯胺。电磁性能测试表明,与非手性聚苯胺相比,手性聚苯胺具有较优越的吸波性能。The chiral polyaniline is synthesized by re-doping emeraldine base （EB） with chiral acid. The structures and chirality of the samples are characterized by means of Fourier transform infrared （FT-IR） spectra, X-ray diffraction （XRD）, circular dichroism spectroscopy （CD）, ultraviolet visible spectrophotometer （UV-vis）. The results indicate that the EB can be induced by chiral camphorsulfonic acid （CSA） with specific electrostatic and hydrogen bond between the PANI chains and the enantiomeric dopant CSA anions, inspiring the PANI chains rearranged and preferentially adopting a one-handed helical screw to form the chiral PANI. And the related prospects and potential applications are also discussed briefly. The electromagnetic behavior of the samples is intensively investigated. The results indicate that the microwave absorption of chiral PANI has superiority over that of the regular PANI.

关 键 词：聚苯胺 手征性 电磁学性能 

分 类 号：TB383[一般工业技术—材料科学与工程] O633.2[理学—高分子化学]