An ivestigation of temperature-manipulated size and shape evolution of preformed core-shell nanoparticles

M. M. Maye, W. X. Zheng, F. L. Leibowitz, N. K. Ly, H. H. Eichelberger, C. J. Zhong

Research output: Contribution to journalArticle

Abstract

This paper presents a study of heating-induced size and shape change for pre-synthesized composite nanoparticles of ∼2 run gold cores encapsulated with alkanethiolate monolayers. The results have demonstrated an evolution in size and shape of the nanoparticles towards monodispersed larger core sizes with well-defined and highly-faceted morphologies. The evolved particles were encapsulated with the thiolate shells. The morphological and structural evolutions were characterized using TEM, XRD, UV-Vis and FTIR spectroscopy. While temperature-driven crystal growth is known for non-encapsulated particles, the evolution of the thiolate-encapsulated nanoparticles in solutions into well-defined morphologies represents an intriguing example of temperature manipulations of nanoparticle monodispersity and shape.

Original languageEnglish (US)
Pages (from-to)201-206
Number of pages6
JournalMaterials Research Society Symposium - Proceedings
Volume580
StatePublished - Dec 1 2000
Externally publishedYes

ASJC Scopus subject areas

  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering

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