TY - JOUR ID - 2230 TI - SELECTIVE NANOSENSING OF COPPER (II) ION USING L-LYSINE FUNCTIONALIZED GOLD CYSTEAMINE SELF-ASSEMBLED MONOLAYER JO - Iranian Journal of Science JA - ISTT LA - en SN - 2731-8095 AU - SHABANI, R. AU - MOZAFFARI, S. A. AU - HUSAIN, s. W. AU - SABER TEHRANI, M. AD - Department of Chemistry, Islamic Azad University, Science and Research Branch, P.O. Box: 145-775, Tehran, I. R. of Iran AD - Advanced Institute of Technology, Iranian Research Organization for Science and Technology (IROST), P.O. Box: 15815-3538, Tehran, I. R. of Iran Y1 - 2009 PY - 2009 VL - 33 IS - 4 SP - 336 EP - 347 KW - Self-assembled monolayer KW - L-Lysine KW - Electrochemical impedance spectroscopy KW - Copper (II) ion DO - 10.22099/ijsts.2009.2230 N2 - Fabrication of a cysteamine (CA) self-assembled monolayer (SAM) modified gold electrode insitufunctionalized with L-Lysine (Lys) is presented and described. The fabricated electrode was used forhighly selective and sensitive accumulation and the determination of copper ions (Cu2+) in a nanomolarconcentration. Techniques like cyclic voltammetry (CV) and electrochemical impedance spectroscopy (EIS)with an external redox probe (p-Benzoquinone) were used to investigate the layer-by-layer self assemblymodification on a gold electrode, monolayer structure and the ion permeation through it. The differentialpulse voltammetric (DPV) method was used for determination of Cu2+. The results indicated that DPV peakscurrents have a linear relationship with pCu in the concentration range of 1.0×10-12 - 1×10-6 M, with acorrelation coefficient of 0.9982. The detection limit could be estimated 1.2×10-13 M according to the IUPACrecommendation (3σ). UR - https://ijsts.shirazu.ac.ir/article_2230.html L1 - https://ijsts.shirazu.ac.ir/article_2230_fa82a46fe73aa7733fdf060ffe1efc80.pdf ER -