Infrared reflection spectroscopic assessment of interfacial derivatization and reactivity at inter-shell linked nanoparticle films

Felicia X. Zhang, Wenxia Zheng, Mathew M. Maye, Yongbing Lou, Li Han, Chuan Jian Zhong

Research output: Contribution to journalArticle

9 Scopus citations

Abstract

This paper reports novel findings of a study of interfacial chemical derivatization reactivities at the interconnecting linkages of core-shell nanoparticle network films. Starting from thin film assemblies of gold nanoparticles linked by head-to-head hydrogen-bonded carboxylic acid terminals, we have demonstrated the conversion of the hydrogen-bonded linkages to anhydride linkages via dehydration reaction. The anhydride was further shown to serve as a new platform for immobilizing amine-functionalized molecular species. We present infrared refiection spectroscopic data to characterize the interfacial structures derived from each of these interfacial reactivities. The unique symmetric and asymmetric stretching bands of the anhydride groups allowed facial identification and assessment of the interfacial reactivities. The potential application of the derivatization strategy for immobilizing biological molecules onto the derivatized nanoparticle assemblies was also explored.

Original languageEnglish (US)
Pages (from-to)9639-9644
Number of pages6
JournalLangmuir
Volume16
Issue number24
DOIs
StatePublished - Nov 28 2000
Externally publishedYes

ASJC Scopus subject areas

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

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