Sensitive SERS nanotags for use with 1550 nm (retina-safe) laser excitation. 2016

Hayleigh Kearns, and Matthew A Bedics, and Neil C Shand, and Karen Faulds, and Michael R Detty, and Duncan Graham
Department of Pure and Applied Chemistry, Technology and Innovation Centre, University of Strathclyde, 99 George Street, Glasgow G1 1RD, UK. duncan.graham@strath.ac.uk.

Chalcogenopyrylium nanotags demonstrate an unprecedented SERS performance with a retina safe, 1550 nm laser excitation. These unique nanotags consisting of chalcogenopyrylium dyes and 100 nm gold nanoparticles produce exceptional SERS signals with picomolar detection limits obtained at this extremely red-shifted and eye-safe laser excitation.

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