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    Phenanthroline derivatives electrochemically grafted to glassy carbon for Cu (II) ion detection

    Year: 2012

    Journal: Sensors and Actuators, B: Chemical, 2012, 166-167, pp 117-127, 20130115

    Authors: Yasemin Oztekin, Zafer Yazicigil, Ali Osman Solak, Zafer Ustundag, Aytug Okumus, Zeynel Kilic, Almira Ramanaviciene, Arunas Ramanavicius

    Organizations: Vilnius University, NanoTechnas, Center of Nanotechnology and Materials Science, Vilnius, Lithuania, Selcuk University, Faculty of Science, Department of Chemistry, Konya, Turkey, Ankara University, Faculty of Science, Department of Chemistry, Ankara, Turkey, Department of Chemical Engineering, Faculty of Engineering, Kyrgyzstan-Turkey Manas University, Bishkek, Kyrgyzstan, Dumlupinar University, Faculty of Arts and Sciences, Department of Chemistry, Kutahya, Turkey,Vilnius University, Faculty of Chemistry, Department of Physical Chemistry, Vilnius, Lithuania

    New sensing platform based on modified glassy carbon (GC) suitable for design of heavy metal-ionsensor is reported in this study. GC-based electrodes were electrochemically modified by poly-5-nitro-1,10-phenanthroline (poly-5NP) and poly-5-amino, 6-nitro-1,10-phenanthroline (poly-5A6NP) layers.Grafting of electrochemically formed poly-5NP and poly-5A6NP layers at the GC electrode surface wasconfirmed by electrochemical reduction of nitro groups into amine groups. Presence of grafted poly-5NP and poly-5A6NP layers and formation of their reduced forms on the GC electrode surface wereverified by cyclic voltammetry, electrochemical impedance spectroscopy, contact angle measurements,ellipsometry and X-ray photoelectron spectroscopy. The applicability of poly-5NP- and poly-5A6NPfunctionalizedcarbon surfaces for the determination of Cu(II) ions was demonstrated by formation ofcomplexes between GC-grafted poly-5NP and poly-5A6NP layers and Cu(II) ions.