Responsive polymer/gold nanoparticle composite thin films fabricated by solvent-induced self-assembly and spin-coating

Dongxiang Li, Ji Yong Lee, Dong Ha Kim

Research output: Contribution to journalArticlepeer-review

17 Scopus citations

Abstract

Self-assembled poly(4-vinylpyridine)-grafted gold (Au) nanoparticles (NPs) and polystyrene-b-poly(4-vinylpyridine) block copolymers were fabricated by the introduction of a selective solvent to a common solution. The assembled mixtures were spin-coated onto solid substrates to fabricate composite gold/polymer thin films composed of copolymer-hybridized Au NPs and independent copolymer micelles. The obtained composite Au thin films had variable localized surface plasmon resonance (LSPR) bands and microscopic morphologies upon vapor annealing with selective solvents because the adsorption and dissolving of solvent molecules into the films could rearrange the copolymer block. The hybrid nanostructured Au thin films may have potential in vapor sensing and organic assays.

Original languageEnglish
Pages (from-to)585-591
Number of pages7
JournalJournal of Colloid and Interface Science
Volume354
Issue number2
DOIs
StatePublished - 15 Feb 2011

Bibliographical note

Funding Information:
This work was supported by RP-Grant 2010 of Ewha Womans University.

Keywords

  • Block copolymer
  • Gold thin films
  • Self-assembly

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