Novel spherical assembly of gold nanoparticles mediated by a tetradentate thioether

Mathew M. Maye, Sandra C. Chun, Li Han, Daniel Rabinovich, Chuan Jian Zhong

Research output: Contribution to journalArticle

127 Scopus citations

Abstract

The ability to construct three- and two-dimensional architectures via nanoscale engineering is important for emerging applications of nanotechnology in sensors, catalysis, controlled drug delivery, microelectronics, and medical diagnostics. In this paper, we report novel 3D assembly using multidentate molecular building blocks. It is demonstrated that the interparticle linking of gold nanoparticles (3.7 nm core size) by a tetradentate thioether, tetra[(methylthio)methyl]silane, leads to the formation of a spherical assembly. The spherical size (30-80 nm diameter) is dependent on reaction time and relative ratio of the building blocks. The novelty of this approach is the viability of multidentate thioethers to link nanoparticles and produce spherical assemblies that can be readily assembled and disassembled. The spherical assembly can also be partially "melted" depending on the nature of interfacial interactions between the assembly and the substrate. These unusual morphological properties in shape and surface interaction and the intriguing assembling-disassembling capabilities may form the basis of designing and fabricating novel functional nanostructures.

Original languageEnglish (US)
Pages (from-to)4958-4959
Number of pages2
JournalJournal of the American Chemical Society
Volume124
Issue number18
DOIs
StatePublished - May 8 2002
Externally publishedYes

ASJC Scopus subject areas

  • Catalysis
  • Chemistry(all)
  • Biochemistry
  • Colloid and Surface Chemistry

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