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

Результат исследований: Материалы для книги/типы отчетовМатериалы для конференции

Аннотация

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.

Язык оригиналаАнглийский
Название основной публикацииECCM 2016 - Proceeding of the 17th European Conference on Composite Materials
ИздательEuropean Conference on Composite Materials, ECCM
ISBN (электронное издание)9783000533877
СостояниеОпубликовано - 1 янв 2016
Событие17th European Conference on Composite Materials, ECCM 2016 - Munich, Германия
Продолжительность: 26 июн 201630 июн 2016

Серия публикаций

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

Конференция

Конференция17th European Conference on Composite Materials, ECCM 2016
СтранаГермания
ГородMunich
Период26.6.1630.6.16

ASJC Scopus subject areas

  • Ceramics and Composites

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