纳米银修饰的微结构聚合物光纤作为化学-光学传感材料的初步研究

通过调节在微结构聚合物纤维(Microtubes Polymer Opeical Fibers,MPOF)孔道中进行的动态化学反应——银镜反应的条件,可以得到管状或岛状纳米Ag修饰的MPOF.扫描电镜分析显示：在高反应物浓度下,在孔洞阵列中进行反应得到管状银修饰的MPOF;该Ag微管-MPOF复合纤维是导电性的,可以直接作为阵列电极制造电化学传感器.研究结果显示,MPOF复合纤维对治癌物质硝酸根或亚硝酸根有高的可逆氧化还原活性;在低反应物浓度下,在孔洞阵列中进行反应得到岛状银修饰MPOF;当把岛状银修饰MPOF插入有机荧光物质的水溶液中时,观察到荧光有明显的增强效应.

Potential Applications of Ag-microtubes Modified Polymer Crystal Optical Fibres as Chemical and Optical Sensor Materials

By adjusting the reaction condition of silver mirror reaction in the air holes of MPOF,nanotubular or nanoisland shape modified Ag-MPOF are obtained.SEM images show that when the reaction solution is higher,the morphology of silver is tubular.This Ag-MPOF composite fiber has favourable conductivity and could be used as array electrode in electroanalysis.The results show that this fiber display high active in sensing nitrate or nitrite ions which usually cause cancers in waste water.When the concentration of reaction solution is lower,the Ag-MPOF with island-like silver nanoparticles is obtained.The fluorescence of dye molecules could be greatly enhanced if it is put into the modified holes of this Ag-MPOF.