Plasmonic Photothermal Fluorescence Modulation for Homogeneous Biosensing
Author(s) -
Jésica V. Pellegrotti,
Emiliano Cortés,
Martín D. Bordenave,
Martín Caldarola,
Mark P. Kreuzer,
A. D. Sánchez,
Ignacio Ojea,
Andrea V. Bragas,
Fernando D. Stefani
Publication year - 2016
Publication title -
acs sensors
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.055
H-Index - 57
ISSN - 2379-3694
DOI - 10.1021/acssensors.6b00512
Subject(s) - photothermal therapy , biosensor , plasmon , fluorescence , nanotechnology , homogeneous , modulation (music) , materials science , photothermal effect , optoelectronics , optics , physics , acoustics , thermodynamics
Fluorescence readout is uniquely powerful for biological assays and imaging because it combines the detection of specific biotargets with high spatial and temporal resolution. Recently, several strategies for the modulation in time of fluorescence emission have been proven useful to separate the target signal from constant background contributions. Here, we investigate the emission modulation of organic fluorophores located in the nanometric vicinity of plasmonically heated gold nanorods and apply it to a novel, all-optical homogeneous biosensing scheme. The combination of plasmonic heating and temperature sensitive molecular fluorescence enables the robust quantification of surface reactions.
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