Electrochemical preparation of pyronin y thin films on gold substrates
Journal of Applied Polymer Science, cilt.111, sa.1, ss.94-100, 2009 (SCI-Expanded, Scopus)
- Yayın Türü: Makale / Tam Makale
- Cilt numarası: 111 Sayı: 1
- Basım Tarihi: 2009
- Doi Numarası: 10.1002/app.29038
- Dergi Adı: Journal of Applied Polymer Science
- Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus
- Sayfa Sayıları: ss.94-100
- Anahtar Kelimeler: AFM, Dyes, Electrochemistry, Nucleation, Solid-state polymerization
- Bilecik Şeyh Edebali Üniversitesi Adresli: Hayır
Özet
Cyclic voltammetry, chronoamperometry, UV-vis absorption spectroscopy, fluorescence spectroscopy, FTIR spectroscopy, and AFM techniques have been employed to investigate pyronin Y thin films formed on Au(111) substrates by electrochemical oxidation of pyronin Y monomer. The medium used in the electropolymerization was an anhydrous acetonitrile solution containing 0.1M TBAClO4 as supporting electrolyte. Anodic electropolymerization potential (1450 mV) of pyronin Y has been obtained from cyclic voltammetry data. Solid-state electropolymerization of pyronin Y was performed by the potential-controlled electrolysis technique. Chronoamperometry studies indicate that the adsorption of pyronin Y takes place in an instantaneous three-dimensional nucleation and growth mechanism which is accompanied by random adsorption. UV-vis absorption and fluorescence spectra of the electrolysis solution as a function of electrodeposition time show the adsorption of insoluble pyronin Y films on Au electrode surface. FTIR-specular reflectance of a polymer coated Au electrode reveals that there is a possible C-C coupling in the formation of polymeric pyronin Y structure. A well ordered polymeric chain structure of pyronin Y on Au(111) has been observed from AFM data. © 2008 Wiley Periodicals, Inc.