A fluorescence and electroactive surface design: electropolymerization of dansyl fluorophore functionalized PEDOT

Abstract

Fluorescent conducting polymers are gaining increasing popularity in actual applications such as electrochromic device, cell detection and fluorescence sensor. This paper describes the synthesis of new both fluorescent and electrochromic polymer. A new bifunctional material 2,3-dihydrothieno[3,4-b][1,4]dioxin-2-yl)methyl 5-(dimethylamino)naphthalene-1-sulfonate (ED) has been synthesized, characterized and electropolimerized. The polymer film which obtained as a highly stable conducting polymer on ITO glass was characterized by cyclic voltammetry (CV), colorimetry, UV–Vis spectroscopy, fluorescence spectroscopy, fluorescence microscopy and scanning electron microscopy (SEM). The PED film demonstrated light blue, gray and purplish blue colors as well as turquoise blue fluorescence color. Both CV and spectroelectrochemical studies proved that the PED film has exhibited high stable electro activity (98%). Further kinetic studies presented that the PED revealed high optic contrast (36%) and relatively low electrochromic response time (2.0 s). The results prevailed that the PED film is promising candidates for fluorescent detection and device applications.