Reactivity of laser-prepared copper nanoparticles: Oxidation of thiols to disulfides

Tung Yu Chen, Shin Fu Chen, Hwo Shuenn Sheu, Chen Sheng Yeh

Research output: Contribution to journalArticle

50 Citations (Scopus)

Abstract

A series of alkanethiols, n-decanethiol (C10SH), n-dodecanethiol (C12SH), n-tetradecanethiol (C14SH), n-hexadecanethiol (C16SH), and n-octadecanethiol (C18SH), were introduced to study the reactivity of the laser-prepared Cu nanoparticles. The colloidal solutions containing alkanethiols resulted in the disulfide (RSSR) formation. In particular, the colorless and the lathy crystals were generated from the C14SH, C16SH, and C18SH. The psuedo-one-dimensional lathlike structures were resolved by the X-ray crystallographic analysis. UV-vis, TEM, high-resolution XRD, and proton NMR were carried out to characterize the Cu nanoparticles and the disulfide products. XPS and XANES measurements were employed to identify the Cu identity, as well. The laser-prepared Cu particles were mainly +0 charge with the possible formation of a thin Cu2O layer on the copper surfaces. It was interpreted that the disulfides resulted from the Cu and/or Cu (core)/ Cu2O (thin shell) particles.

Original languageEnglish
Pages (from-to)9717-9722
Number of pages6
JournalJournal of Physical Chemistry B
Volume106
Issue number38
DOIs
Publication statusPublished - 2002 Sep 26

All Science Journal Classification (ASJC) codes

  • Physical and Theoretical Chemistry
  • Surfaces, Coatings and Films
  • Materials Chemistry

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