TY - JOUR T1 - Enhanced interaction of molecular oxygen with amino acid complexes of silver and gold clusters JF - Indian Journal of Chemistry Section A-Inorganic Bio-Inorganic Physical Theoretical & Analytical Chemistry Y1 - 2014 A1 - Manzoor, Dar A1 - Pal, Sourav KW - Amino acid complexes KW - Density functional calculations KW - Gold clusters KW - Metal clusters KW - Silver clusters KW - Theoretical chemistry AB -

Density functional theory calculations have been carried out to study the effect of amino acid adsorption on the reactivity of silver and gold clusters with molecular oxygen. It is found that the amino acids glycine and alanine form stable complexes with both Ag-4 and Au-4 clusters. However, the extent of interaction is more in the case of the Au-4 cluster, as reflected from the increase in binding energy in the amino acid Au-4 complexes. Our results confirm that the adsorption of amino acids glycine and alanine enhances the reactivity of Ag-4 and Au-4 clusters towards O-2 molecule. The enhanced reactivity of O-2 molecule towards the amino acid metal cluster complexes is manifested by an increase in the O-2 binding energy and a decrease in the M-O (M = Ag, Au) bond length. Moreover, it is found that the co-adsorption of amino acids and O-2 molecule on the Ag-4 and Au-4 clusters is cooperative.

PB - NATL INST SCIENCE COMMUNICATION-NISCAIR CY - DR K S KRISHNAN MARG, PUSA CAMPUS, NEW DELHI 110 012, INDIA VL - 53 IS - 8-9 U3 -

Indian
 

U4 -

0.84

ER -