The Assembly of Gold Nanoparticulate Monolayer onto Mica Substrate

Abstract

Abstract: Gold nanoparticles, prepared by the Frens method, have been electrostatically assemblied onto mica substrates treated with different concentration of MnCl₂ solution. The assemblies have been investigated by means of atomic force microscopy(AFM). The immersing time of bare mica in Mn²⁺ solution and the concentration of Mn²⁺ solution both have significant effect on the assembled process of gold nanoparticulate monolayer. The coverage of gold particles shows periodical evolution on the immersing time of mica in MnCl₂ solution. The higher is the concentration of MnCl₂, the shorter is the time to attain maximum coverage. An ionexchanged and layerdissociated mechanism is put forth to explain the experimental results above.

Key words: Gold nanoparticles, Mica substrate, Assembly, Eletrostatical adsorption

CLC Number:

O614

TrendMD:

GUO Wei, WEI Li, ZHANG XinTong, BAI YuBai. The Assembly of Gold Nanoparticulate Monolayer onto Mica Substrate[J]. Chem. J. Chinese Universities, 2001, 22(12): 1987.

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The Assembly of Gold Nanoparticulate Monolayer onto Mica Substrate

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