Resonant Raman spectroscopy as a tool for determining the formation of a ladder structure in electropolymerized poly(5-amino-1-naphthol)

• Published in: Journal of electroanalytical chemistry (Lausanne, Switzerland) Vol. 518; no. 1; pp. 33 - 40
• Main Authors: Cintra, Elaine P, Córdoba de Torresi, Susana I
• Format: Journal Article
• Language: English
• Published: Amsterdam Elsevier B.V 11.01.2002; Elsevier Science
• Subjects: Applied sciences; Chemistry; Electrochemistry; Exact sciences and technology; General and physical chemistry; Kinetics and mechanism of reactions; Physicochemistry of polymers; Poly(5-amino-1-naphthol); Polymerization; Polymers and radiations; Resonant Raman spectroscopy; Spectroelectrochemistry; Resonant Raman spectroscopy; Spectroelectrochemistry; Poly(5-amino-1-naphthol); Gold; Aniline derivative polymer; Indium tin oxide electrode; Transition metal; Experimental study; Electrochemical polymerization; Acidic solution; Hydrochloric acid; Conducting polymers; Resonance scattering; Perchloric acid; Medium effect; Raman spectrometry; Electrochemical reaction; Disk electrode; Ultraviolet visible spectrometry
• ISSN: 1572-6657; 1873-2569
• DOI: 10.1016/S0022-0728(01)00696-9

Electropolymerization of poly(5-amino-1-naphthol) onto different conducting substrates was studied in HCl, HClO 4, PTSA ( p-toluene sulfonic acid) and HCSA (camphorsulfonic acid) media. In situ UV–vis spectroelectrochemical studies have shown spectral changes that demonstrate that the oxidation process is accompanied by the formation of polaronic and bipolaronic structures due to the ejection of electrons from the polymeric matrix. Resonance Raman spectroscopy was used to follow structural changes that occur during the redox processes of the polymer and it allows us to infer the formation of imine groups and the possible ‘ortho’ coupling during electropolymerization.