Electrochemical organization of monolayer protected gold nanoclusters on single-walled carbon nanotubes: Significantly enhanced double layer capacitance

S. Mahima, N. K. Chaki, J. Sharma, B. A. Kakade, R. Pasricha, A. M. Rao, K. Vijayamohanan

Research output: Contribution to journalArticle

Abstract

This paper reports a novel electrochemical route for anchoring monolayer protected gold nanoclusters (size 8 ± 0.2 nm) on single-walled carbon nanotube bundles, resulting in the formation of hybrid materials. Monolayer protected gold nanoclusters prepared by modified Brust synthesis route were organized on SWNT bundles by cycling the potential in dichloromethane between -1 to +1 V at a scan rate of 50 mV/s. Monolayer protected nanoclusters in electrolyte solutions possess ionic space charge around them (double layer charging), making them suitable for organization on nanotube bundles, by tuning the electrostatic interactions. More significantly, analysis of the double layer capacitance of these hybrid materials shows almost ten times increase in capacitance compared to that of bare SWNT bundles. We believe that these hybrid materials are potentially useful in nanoelectronics.

Original languageEnglish (US)
Pages (from-to)1387-1391
Number of pages5
JournalJournal of Nanoscience and Nanotechnology
Volume6
Issue number5
DOIs
StatePublished - May 2006

Keywords

  • Double Layer Capacitance
  • Double Layer Charging
  • Hybrid Materials
  • Monolayer Protected Gold Nanoclusters
  • Single-Walled Carbon Nanotubes

ASJC Scopus subject areas

  • Bioengineering
  • Chemistry(all)
  • Biomedical Engineering
  • Materials Science(all)
  • Condensed Matter Physics

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