Preparation and electrical characterisation of dodecanethiol monolayer protected silver nanoclusters

Aslam, M. ; Chaki, N. K. ; Mulla, I. S. ; Vijayamohanan, K. (2001) Preparation and electrical characterisation of dodecanethiol monolayer protected silver nanoclusters Applied Surface Science, 182 (3-4). pp. 338-344. ISSN 0169-4332

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Official URL: http://www.sciencedirect.com/science/article/pii/S...

Related URL: http://dx.doi.org/10.1016/S0169-4332(01)00445-7

Abstract

Preparation and characterisation of dodecanethiol monolayer protected silver clusters (10-15 nm) (Ag-DDT) is reported here to illustrate its interesting low temperature electrical properties. These monolayer protected silver nanoclusters were found to undergo an insulating to metallic transition around 180 K, in agreement with the theoretical prediction of the disappearance of the Kubo gap at low temperature in these systems, where the interparticle spacing (0.5-1 nm) is less compared to the nanocluster dimensions. The XRD data suggest the formation of multilayered structure, and the equidistant peaks at smaller angle indicates a long-range ordering of nanoclusters. The UV-Vis absorption in solution indicates the presence of a surface plasmon band at 425 nm and cyclic voltammetry studies confirm the accessibility of these passivated clusters for electron transport.

Item Type:Article
Source:Copyright of this article belongs to Elsevier Science.
Keywords:Dodecanethiol; Monolayer Protected; Nanoclusters; Cyclic Voltammetry
ID Code:68887
Deposited On:07 Nov 2011 05:09
Last Modified:07 Nov 2011 05:09

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