摘要
以手性试剂D-樟脑磺酸(D-CSA)和L-樟脑磺酸(L-CSA)为掺杂剂和构象诱导剂,采用界面聚合法合成了螺旋形聚苯胺纳米纤维。通过FESEM、TEM、FTIR和UV-Vis吸收光谱等测试技术对螺旋形聚苯胺纳米纤维结构进行了表征。结果表明,所得聚苯胺纤维具有螺旋形构象,形貌均一,平均直径约为50nm,长度为300～600nm,具有较高的长径比(6:1～12:1)。在水溶液中,聚苯胺纳米纤维以伸展的螺旋形分子链构象存在,调节溶液的pH值,螺旋形聚苯胺纳米纤维表现出可逆的掺杂和脱掺杂性质。循环伏安(CV)测试表明,螺旋形聚苯胺纳米纤维在0.5mol/LHCl溶液中表现出良好的电化学活性。
Helical polyaniline nanofibers were prepared by a facilel interface polymerization method with chiral regents D-and L-camphorsulfonic acid（D-and L-CSA） as dopants and conformation inducer.The as-prepared helical polyaniline nanofibers were characterized by FESEM,TEM,FTIR,UV-Vis spectroscopies.The results show that relatively uniform polyaniline nanofibers with a helical conformation and higher ratio of length to diameter（6∶1~12∶1） could be readily obtained by means of this method,the average diameter and the lengths were about 50 nm and in a range of 300~600 nm,respectively.The helical polyaniline nanofibers exist in more expanded coil molecular conformation in aqueous solution and show reversible doping-dedoping nature along with the change of pH value of solution.Cyclic voltammetry tests show that the helical polyaniline nanofibers exhibit good electrochemical activity in a 0.5 mol/L HCl aqueous solution.
出处
《应用化学》
CAS
CSCD
北大核心
2010年第5期510-513,共4页
Chinese Journal of Applied Chemistry
基金
河西学院西部资源环境化学重点实验室面上项目基金资助(XZ0706)
