Oztekin, YaseminYazicigil, ZaferSolak, Ali OsmanUstundag, ZaferOkumus, AytugKilic, ZeynelRamanaviciene, Almira2020-03-262020-03-2620120925-4005https://dx.doi.org/10.1016/j.snb.2012.01.025https://hdl.handle.net/20.500.12395/28300New sensing platform based on modified glassy carbon (GC) suitable for design of heavy metal-ion sensor 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 was confirmed 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 were verified by cyclic voltammetry, electrochemical impedance spectroscopy, contact angle measurements, ellipsometry and X-ray photoelectron spectroscopy. The applicability of poly-5NP- and poly-5A6NP-functionalized carbon surfaces for the determination of Cu(II) ions was demonstrated by formation of complexes between GC-grafted poly-5NP and poly-5A6NP layers and Cu(II) ions. (C) 2012 Elsevier B.V. All rights reserved.en10.1016/j.snb.2012.01.025info:eu-repo/semantics/closedAccessPhenanthroline derivativesSurface functionalizationElectrochemical polymerizationGraftingFunctionalized carbon surfacesArticle166117127Q1WOS:000305356900019Q1