Preparation of aggregation stable gold nanoparticles using star-block copolymers

Ji Ho Youk, Mi Kyoung Park, Jason Locklin, Rigoberto Advincula, Jinchuan Yang, Jimmy Mays

Research output: Contribution to journalArticlepeer-review

79 Citations (Scopus)

Abstract

Nanoparticles of improved stability against long-term aggregation were prepared using poly(styrene)-b-poly(2-vinylpyridine) (PS-b-F2VP) star-block copolymer architectures. The star-block copolymers, physically resembling diblock copolymer micelles, were synthesized by anionic polymerization and coupling with ethylene glycol dimethacrylate. They contain P2VP core segments that facilitated conversion of HAuCl4 to single gold nanoparticles. The size distribution and long-term stability against aggregation of the gold nanoparticles were investigated both as solution and as films. UV-vis spectroscopy and transmission electron microscope images reveal long-term stability against aggregation up to 1 month.

Original languageEnglish
Pages (from-to)2455-2458
Number of pages4
JournalLangmuir
Volume18
Issue number7
DOIs
Publication statusPublished - 2002 Apr 2
Externally publishedYes

ASJC Scopus subject areas

  • Materials Science(all)
  • Condensed Matter Physics
  • Surfaces and Interfaces
  • Spectroscopy
  • Electrochemistry

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