Controlled interlinking of Au and Ag nanoclusters using 4-aminothiophenol as molecular interconnects

Jadab Sharma, Nirmalya K. Chaki, A. B. Mandale, Renu Pasricha, K. Vijayamohanan

Research output: Contribution to journalArticle

Abstract

This work describes the formation of interlinked gold and silver nanoclusters at controlled pH using 4-aminothiophenol (ATP) as a molecular interconnect. UV-visible spectra give on intercrystal plasmon resonance band in the region 550-580 nm. The crystalline heteroassembly formation is also evident from the transmission electron microscopic (TEM) images, whereas X-ray photoelectron spectroscopic (XPS) analysis of the aggregates shows the presence of charged -N species, indicating electrostatic interaction of -N with Ag nanoclusters. Furthermore, electrochemical studies of these heteroassembled systems suggest that silver nanoclusters are not fully passivated by the monolayers of ATP and are accessible for redox reactions.

Original languageEnglish (US)
Pages (from-to)145-152
Number of pages8
JournalJournal of Colloid And Interface Science
Volume272
Issue number1
DOIs
StatePublished - Apr 1 2004

Keywords

  • 4-Aminothiophenol
  • Cyclic voltammetry
  • Electrostatic interaction
  • Intercrystal plasmon resonance band
  • Interlinked gold and silver nanoclusters
  • Molecular interconnect

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Biomaterials
  • Surfaces, Coatings and Films
  • Colloid and Surface Chemistry

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