title: In situ UV-Vis spectroelectrochemical studies to identify electrochromic sites in poly(1-naphthylamine) modified by diphenylamine.
abstract: Poly(1-napthylamine) (PNPA) was modified by incorporation of diphenylamine (DPA) to result copolymer film on the indium tin oxide (ITO) coated glass electrode using cyclic voltammetry. Detailed static and dynamic UV-Vis spectroelectrochemical studies were performed on the copolymer films to identify the electrochromic sites corresponding to individual DPA and NPA units. Absorbance-wavelength-potential (AWP) profiles were constructed from the dynamic spectroelectrochemical results to infer the electrochromic sites. The advantages of using AWP profile in the analysis of electrochromic sites are discussed.
authors.affiliation: Department of Chemical Engineering, National Cheng Kung University, Tainan 701, Taiwan.
authors.forename: Chein-Yie
authors.initials: CY
authors.lastname: Chung
authors.forename: Ten-Chin
authors.initials: TC
authors.lastname: Wen
authors.forename: A
authors.initials: A
authors.lastname: Gopalan
mesh_terms: D004159:Diphenylamine / Q000737:chemistry*; D004563:Electrochemistry / Q000379:methods*; D011073:Polyamines / Q000737:chemistry*; D013053:Spectrophotometry; D013056:Spectrophotometry, Ultraviolet
chemical_list: D011073:Polyamines; D004159:Diphenylamine