Controlling the formation of Au nanoparticles using functionalized molecular buffer layers

Q Guo, X Sun, Yu Chen, R.E. Palmer

Research output: Contribution to journalArticle

17 Citations (Scopus)

Abstract

Nanoparticles of gold are produced by evaporation of gold atoms onto functionalized self-assembled monolayers (SAMs). SAMs of dodecanethiol (DT) and mercaptoundecanoic acid (MUA) on Au(1 1 1) are used as substrates and the gold particles are imaged with a scanning tunneling microscope. Gold atoms evaporated on DT monolayers diffuse rapidly to the interface between the molecular layer and the gold substrate where they form two-dimensional islands of 1 ML in height. In the case of monolayers of MUA, the strong interaction between evaporated gold and the acid group of the molecule gives rise to effective pinning of the gold atoms on top of the molecular layer and leads to the growth of three-dimensional gold nanocrystals.

Original languageEnglish
Pages (from-to)269-274
Number of pages6
JournalSurface Science
Volume497
Issue number1-3
DOIs
Publication statusPublished - 20 Jan 2002

Keywords

  • self-assembly
  • scanning tunneling microscopy
  • electron energy loss spectroscopy (EELS)
  • gold
  • self-assembled monolayers
  • coulomb blockade
  • metal overlayers
  • AU(111)
  • surface
  • silver
  • spectroscopy
  • deposition
  • clusters

Fingerprint Dive into the research topics of 'Controlling the formation of Au nanoparticles using functionalized molecular buffer layers'. Together they form a unique fingerprint.

  • Cite this