A Mechanistic and Kinetic Study of the Formation of Metal Nanoparticles by Using Synthetic Tyrosine??Based Oligopeptides

S Si, RR Bhattacharjee, A Banerjee…

Index: Si, Satyabrata; Bhattacharjee, Rama Ranjan; Banerjee, Arindam; Mandal, Tarun K. Chemistry - A European Journal, 2006 , vol. 12, # 4 p. 1256 - 1265

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Citation Number: 96

Abstract

Abstract Synthetic oligopeptides containing redox-active tyrosine residues have been employed to prepare gold and silver nanoparticles. In this reduction process an electron from the tyrosinate ion of the peptide is transferred to the metal ion at basic pH through the formation of a tyrosyl radical, which is eventually converted to its dityrosine form during the reaction. This reaction mechanism was confirmed from UV-visible, fluorescence, and EPR ...