Issue 4, 2013
From the journal:

Journal of Materials Chemistry B

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

Fang Xie,*a   Anthony Centeno,b   Mary R. Ryan,a   D. Jason Rileya  and  Neil M. Alforda  

* Corresponding authors

a Department of Materials and London Centre for Nanotechnology, Imperial College London, London, UK
E-mail: f.xie@imperial.ac.uk

b Malaysia Japan International Institute of Technology, University Technology Malaysia International Campus, Jalan Semarak, Kuala Lumpur, Malaysia

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.

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

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Article information

DOI
https://doi.org/10.1039/C2TB00278G
Article type
Paper
Submitted
19 Oct 2012
Accepted
07 Nov 2012
First published
09 Nov 2012

J. Mater. Chem. B, 2013,1, 536-543

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

F. Xie, A. Centeno, M. R. Ryan, D. J. Riley and N. M. Alford, J. Mater. Chem. B, 2013, 1, 536 DOI: 10.1039/C2TB00278G

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