Au nanostructures by colloidal lithography: from quenching to extensive fluorescence enhancement

Xie, F., Centeno, A. , Ryan, M. R., Riley, D. J. and Alford, N. M. (2013) Au nanostructures by colloidal lithography: from quenching to extensive fluorescence enhancement. Journal of Materials Chemistry B, 1(4), pp. 536-543. (doi: 10.1039/C2TB00278G) (PMID:32260825)

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Abstract

Enhanced local electric fields are created by nanoparticles when pumped at wavelengths corresponding to Localised Surface Plasmon Resonance (LSPR) modes, leading to Metal Induced Fluorescence Enhancement (MIFE). This paper describes the fluorescent enhancement due to reproducible and tuneable Au nanostructures on glass substrates fabricated over large areas by colloidal lithography. Interparticle separation, particle resonance, and the fluorescent dye properties (quantum yield and emission/excitation wavelengths) are all important factors influencing the fluorescent enhancement. A maximum fluorescence enhancement of 69 times from near infra-red (NIR) dye Alexa Fluor® 790 was observed.

Item Type:Articles
Status:Published
Refereed:Yes
Glasgow Author(s) Enlighten ID:Centeno, Dr Anthony
Authors: Xie, F., Centeno, A., Ryan, M. R., Riley, D. J., and Alford, N. M.
College/School:College of Science and Engineering > School of Engineering > Systems Power and Energy
Journal Name:Journal of Materials Chemistry B
Publisher:Royal Society of Chemistry
ISSN:2050-750X
ISSN (Online):2050-7518
Published Online:09 November 2012

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