Synthesis and Characterization of PEDOT Derivative with Carboxyl Group and Its Chemo Sensing Application as Enhanced Optical Materials

摘要

Poly(4-(((2,3-dihydrothieno[3,4-b][1,4]dioxin-2-yl)methoxy)methyl)benzoic acid) (PEDOT-Ph-COOH) was facilely synthesized by the direct electropolymerization of 4-(((2,3-dihydrothieno[3,4-b][1,4]dioxin-2-yl)methoxy)methyl)benzoic acid (EDOT-Ph-COOH) in CH2Cl2-Bu4NPF6 (0.10 M) system, and the PEDOT-Ph-COOH films were systematically investigated. The results displayed that the film had excellent reversible redox activities, good electrochemical performance, and rough and compact surface. Finally, the PEDOT-Ph-COOH film was used as an optical chemo-sensor for the highly selective and sensitive detection of F-, PO43-, HCO3-, S2O32-, Cu2+, and Fe3+ in dimethyl sulfoxide. Satisfactory results indicated that optical chemo-sensor based on PEDOT-Ph-COOH possessed an excellent sensing performance and enhanced optical response, and it might be as potential promising materials, such as electrochromic devices, supercapacitors and so on. (c) 2014 Wiley Periodicals, Inc.