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Surface modification and characterization of phenanthroline nanofilms on carbon substrate
Author(s) -
Oztekin Yasemin,
Yazicigil Zafer,
Solak Ali Osman,
Ustundag Zafer,
Kilic Zeynel,
Bilge Selen
Publication year - 2011
Publication title -
surface and interface analysis
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.52
H-Index - 90
eISSN - 1096-9918
pISSN - 0142-2421
DOI - 10.1002/sia.3662
Subject(s) - cyclic voltammetry , phenanthroline , glassy carbon , dielectric spectroscopy , electrochemistry , electrode , surface modification , acetonitrile , analytical chemistry (journal) , contact angle , chemistry , transition metal , substrate (aquarium) , voltammetry , carbon fibers , materials science , inorganic chemistry , organic chemistry , catalysis , composite material , oceanography , composite number , geology
Modification of glassy carbon (GC) surfaces with phenanthroline derivatives (PDs) such as 5‐amino‐1,10‐phenanthroline (5AP) and 5,6‐diamino‐1,10‐phenanthroline (56DAP) is described in this study. Surface modification experiments were performed by cyclic voltammetry (CV) scanning from + 1.2 to + 2.7 V at scan rate of 100 mV/s applying 30 potential scans in acetonitrile (CH 3 CN) containing 1 m M PDs and 100 m M tetrabutylammoniumtetrafluoroborate (TBATFB). The presence of PDs on GC electrode was confirmed using CV, electrochemical impedance spectroscopy (EIS), contact angle measurements and ellipsometry and comparing with the results of bare GC electrode. A mechanism was proposed for the electrochemical modification of the GC electrode surface with PDs. The structure of the 5AP and 56DAP films was also discussed in the light of electrochemical and spectroscopic data. The complex‐forming ability of the modified surfaces against metal cations was investigated by square‐wave voltammetry (SWV). It was shown that surfaces having 1,10‐phenanthroline ligands with different functional groups were quite useful for the determination of transition metal ions. Copyright © 2010 John Wiley & Sons, Ltd.