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Fabrication of colloidal platforms for surface‐enhanced Raman spectroscopy on optically inert templates
Author(s) -
BlancoFormoso Maria,
PazosPerez Nicolas,
AlvarezPuebla Ramon A.
Publication year - 2021
Publication title -
journal of raman spectroscopy
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.748
H-Index - 110
eISSN - 1097-4555
pISSN - 0377-0486
DOI - 10.1002/jrs.5989
Subject(s) - inert , template , raman spectroscopy , materials science , colloid , nanotechnology , nanoparticle , surface enhanced raman spectroscopy , fabrication , plasmon , spectroscopy , surface modification , chemical engineering , raman scattering , chemistry , optoelectronics , optics , organic chemistry , medicine , physics , alternative medicine , engineering , pathology , quantum mechanics
Conventional substrates for surface‐enhanced Raman spectroscopy (SERS) present some limitations. Plasmonic colloids are unstable in complex real samples and do not present hot spots. Conversely, engineered thin films are expensive and allow the study of a limited volume of sample. Hybrid platforms based in the adsorption of colloids on optically inert nano or microscaled materials put together the advantages of both classical methods for analysis. As the particles are densely packed, their assemblies present the same optical activities as the thin films, and because the inert template is usually colloidally stable, the assemblies behave as colloidal particles. This review focus on the different strategies proposed, up to date, to produce homogeneous nanoparticles (NPs) assemblies supported on colloidal templates for different applications.