Publication
Title
Templated growth of surface enhanced raman scattering-active branched gold nanoparticles within radial mesoporous silica shells
Author
Abstract
Noble metal nanoparticles are widely used as probes or substrates for surface enhanced Raman scattering (SERS), due to their characteristic plasmon resonances in the visible and near-IR spectral ranges. Aiming at obtaining a versatile system with high SERS performance, we developed the synthesis of quasi-monodisperse, nonaggregated gold nanoparticles protected by radial mesoporous silica shells. The radial mesoporous channels were used as templates for the growth of gold tips branching out from the cores, thereby improving the plasmonic performance of the particles while favoring the localization of analyte molecules at high electric field regions: close to the tips, inside the pores. The method, which additionally provides control over tip length, was successfully applied to gold nanoparticles with various shapes, leading to materials with highly efficient SERS performance. The obtained nanoparticles are stable in ethanol and water upon thermal consolidation and can be safely stored as a powder.
Language
English
Source (journal)
ACS nano. - -
Publication
2015
ISSN
1936-0851
DOI
10.1021/ACSNANO.5B04744
Volume/pages
9 :10 (2015) , p. 10489-10497
ISI
000363915300105
Pubmed ID
26370658
Full text (Publisher's DOI)
Full text (open access)
UAntwerpen
Faculty/Department
Research group
Project info
PLASMAQUO: Development of plasmonic quorum sensors for understanding bacterial-eukaryotic cell relations
PHARMASEA: Increasing Value and Flow in the Marine Biodiscovery Pipeline
Optimization of the structure-activity relation in nanoporous materials.
Publication type
Subject
Affiliation
Publications with a UAntwerp address
External links
Web of Science
Record
Identifier
Creation 30.11.2015
Last edited 09.10.2023
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