abstract
This review focuses on recent developments in hybrid and nanostructured substrates for SERS (surface-enhanced Raman scattering) studies. Thus substrates composed of at least two distinct types of materials, in which one is a SERS active metal, are considered here aiming at their use as platforms for chemical detection in a variety of contexts. Fundamental aspects related to the SERS effect and plasmonic behaviour of nanometals are briefly introduced. The materials described include polymer nanocomposites containing metal nanoparticles and coupled inorganic nanophases. Chemical approaches to tailor the morphological features of these substrates in order to get high SERS activity are reviewed. Finally, some perspectives for practical applications in the context of chemical detection of analytes using such hybrid platforms are presented.
keywords
SURFACE-ENHANCED RAMAN; SELF-ASSEMBLED MONOLAYERS; WALLED CARBON NANOTUBES; STABILIZED GOLD NANOPARTICLES; COATED MAGNETIC NANOPARTICLES; SINGLE-MOLECULE DETECTION; GRAPHENE-BASED NANOCOMPOSITES; FRAGMENTATION CHAIN TRANSFER; CORE-SHELL NANOSTRUCTURES; NOBLE-METAL NANOPARTICLES
subject category
Chemistry; Physics
authors
Fateixa, S; Nogueira, HIS; Trindade, T
our authors
Helena Isabel Seguro Nogueira
Assistant Professor with Aggregation
Sara Fateixa
Junior Researcher
Tito Trindade
Full professoracknowledgements
S. Fateixa thanks Fundacao para a Ciencia e Tecnologia (FCT) for the Grant SFRH/BPD/93547/2013. This publication was financially supported by FEDER through Programa Operacional Factores de Competitividade - COMPETE and national funds through FCT within CICECO project - FCOMP- 01-0124-FERDER-037271 (FCT Ref. Pest-C/CTM/LA0011/2013).