کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
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742558 | 1462122 | 2012 | 11 صفحه PDF | دانلود رایگان |
![عکس صفحه اول مقاله: Phenanthroline derivatives electrochemically grafted to glassy carbon for Cu(II) ion detection Phenanthroline derivatives electrochemically grafted to glassy carbon for Cu(II) ion detection](/preview/png/742558.png)
New 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.
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Journal: Sensors and Actuators B: Chemical - Volumes 166–167, 20 May 2012, Pages 117–127