SPEIAu composite colloids via the utilization of a facile method involving polyethylenimine PEI The PEI used in the reaction scheme served as a linker" />

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Title of Journal: Ionics

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Abbravation: Ionics

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Springer-Verlag

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DOI

10.1007/s12665-015-4645-7

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1862-0760

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Method for detection of thiolcontaining amino aci

Authors: Davoy Murray Seong S Seo
Publish Date: 2008/11/27
Volume: 15, Issue: 4, Pages: 459-464
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Abstract

This paper reports the preparation of PSPEIAu composite colloids via the utilization of a facile method involving polyethylenimine PEI The PEI used in the reaction scheme served as a linker between gold Au and polystyrene PS and additionally as a reducing agent in the conversion of Au ions to gold nanoparticles Au NPs The PSPEIAu colloids thus prepared were characterized by scanning electron microscopy ultravioletvisible and infrared spectroscopy and cyclic voltammetry The PSPEIAu composites were further used for the detection of the thiolcontaining amino acids cysteine and homocysteine via attenuated total reflection spectroscopy Experimental results revealed interfacial binding of the amino acids to the composites and correlated with successive additions of the respective amino acids

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