Copolymer formation of 9-(2-(benzyloxy)ethyl)-9H-carbazole and 1-tosyl-1H-pyrrole coated on glassy carbon electrode and electrochemical impedance spectroscopy
Yükleniyor...
Dosyalar
Tarih
2012
Yazarlar
Dergi Başlığı
Dergi ISSN
Cilt Başlığı
Yayıncı
Springer
Erişim Hakkı
info:eu-repo/semantics/closedAccess
Özet
In this work, 9-(2-(benzyloxy)ethyl)-9H-carbazole (BzOCz) and 1-tosyl-1H-pyrrole (TsP) monomers were chemically synthesized and characterized by Fourier transform infrared reflectance (FTIR) and proton nuclear magnetic resonance (H-1-NMR) spectroscopy. BzOCz and TsP were electrocoated on glassy carbon electrode (GCE) in various molar fractions (X (TsP) = 0.5, 0.83, 0.91, and 0.98) in 0.1 M sodium perchlorate/acetonitrile. The detailed characterization of poly(BzOCz-co-TsP) was studied by cyclic voltammetry, FTIR-attenuated total reflection spectroscopy and electrochemical impedance spectroscopy (EIS). The effects of different molar fractions during the preparation of modified electrodes were studied by EIS technique. The AC impedance technique was used to determine the capacitive behaviors of modified GCE via Nyquist, Bode magnitude, and Bode phase plots. The highest low frequency capacitance value was obtained as C (LF) = 23.94 mu F cm(-2) for X (TsP) = 0.98. Therefore, synthesized copolymer has more capacitive behavior than its homopolymers, such as C (LF) = 7.5 mu F cm(-2) for poly(BzOCz) and C (LF) = 9.44 mu F cm(-2) for poly(TsP). In order to interpret the AC impedance spectra, R(Q(RW)) electrical equivalent circuit was employed with linear Kramers-Kronig test. A mechanism for electropolymerization has been proposed for copolymer formation.
Açıklama
Anahtar Kelimeler
Glassy carbon electrode, 9-(2-(benzyloxy) ethyl)-9H-carbazole, 1-tosyl-1H-pyrrole, Copolymerization, Electrochemical impedance spectroscopy, Circuit model, Self-Assembled Monolayers, Corrosion Protection, Solid-State, Carbazole, Polymers, Electropolymerization, Behavior, Films, Deposition, Surface
Kaynak
Journal of Solid State Electrochemistry
WoS Q Değeri
Q2
Scopus Q Değeri
Q2
Cilt
16
Sayı
8
