Fabrication of Calix[4]pyrrole Nanofilms at the Glassy Carbon Surface and Their Characterization by Spectroscopic, Optic and Electrochemical Methods
Yükleniyor...
Dosyalar
Tarih
2010
Dergi Başlığı
Dergi ISSN
Cilt Başlığı
Yayıncı
Elsevier Science Sa
Erişim Hakkı
info:eu-repo/semantics/openAccess
Özet
meso-Octamethylcalix[4]pyrrole (CP) and meso-heptaethylcalix[4]pyrrole-meso-4-aminophenyl (4APCP) modified glassy carbon (GC) electrodes were prepared by the electrochemical oxidation in acetonitrile solution. Binding of the calix[4]pyrroles with the glassy carbon surface was investigated that it is through the etheric linkage revealed from the reflection absorption infrared spectroscopy (RAIRS). Surface films of CP and 4APCP were investigated by cyclic voltammetry (CV), ellipsometry, X-ray photoelectron spectroscopy. RAIRS and the contact angle measurements. The thicknesses of the films were determined by ellipsometry which confirmed that the film was multilayer and homogeneous over the surface. Ellipsometric measurements also provided that the CP and 4APCP film thicknesses were 2.49 nm and 4.58 nm for 6 CV cycle modification, corresponding to 66 mu F/cm(2) and 106 mu F/cm(2) capacitances obtained by CV. The wetting behavior was examined by contact angle measurements and found that the hydrophobicity of the GC-4APCP surface was higher than that of GC-CP, probably due to the aromatic meso substituent present in the former.
Açıklama
Anahtar Kelimeler
Calix[4]pyrrole, Modification, Glassy carbon, X-ray photoelectron spectroscopy, Ellipsometry, Contact angle measurements
Kaynak
Thin Solid Films
WoS Q Değeri
Q1
Scopus Q Değeri
Q2
Cilt
519
Sayı
Künye
Taner, B., Özcan, E., Üstündağ, Z., Keskin, S., Solak, A. O., Ekşi, H., (2010). Fabrication of Calix[4]pyrrole Nanofilms at the Glassy Carbon Surface and Their Characterization by Spectroscopic, Optic and Electrochemical Methods. Thin Solid Films, (519), 289-295. Doi: 10.1016/j.tsf.2010.07.127
