Covalent modification of gold thin films for plasmonic applications: Comparison of spontaneous and electrografting

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

Surface modification by the attachment of organic groups is a subject of current interest in material science and sensor design. We developed facile procedure for covalent functionalization of optical-active gold thin films using water-soluble arenediazonium tosylates (ADTs). These strongly bonded organic layers were characterized by IR, XPS, water contact angles, AFM, SEM-EDX, UV-Vis, CVA and SERS. According to structural characteristics, spontaneous interaction of ADTs water solution with metal-coated substrates gave close to monolayer organic film. Whereas electrochemical reaction in aqueous media resulted in multilayer coating. Observed shift of plasmon resonance and ehnhanced Raman intensity after modification by ADTs enables to consider prepared materials as a platform for sensing system. Plasmon-active metal surfaces decorated with immobilized organic functional groups can be applied as selective SPR or SERS sensory elements for the detection of trace amounts of bioorganic compounds, toxins and pollutants via further functionalization by molecular recognition elements or as tunable plasmonic devices.

Original languageEnglish
Title of host publicationECCM 2016 - Proceeding of the 17th European Conference on Composite Materials
PublisherEuropean Conference on Composite Materials, ECCM
ISBN (Electronic)9783000533877
Publication statusPublished - 1 Jan 2016
Event17th European Conference on Composite Materials, ECCM 2016 - Munich, Germany
Duration: 26 Jun 201630 Jun 2016

Publication series

NameECCM 2016 - Proceeding of the 17th European Conference on Composite Materials

Conference

Conference17th European Conference on Composite Materials, ECCM 2016
CountryGermany
CityMunich
Period26.6.1630.6.16

    Fingerprint

Keywords

  • Diazonium salts
  • Gold films
  • Surface modification
  • Surface-enhanced Raman spectroscopy

ASJC Scopus subject areas

  • Ceramics and Composites

Cite this

Guselnikova, O. A., Postnikov, P. S., & Lyutakov, O. (2016). Covalent modification of gold thin films for plasmonic applications: Comparison of spontaneous and electrografting. In ECCM 2016 - Proceeding of the 17th European Conference on Composite Materials (ECCM 2016 - Proceeding of the 17th European Conference on Composite Materials). European Conference on Composite Materials, ECCM.