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Sensitive SERS nanotags for use with a hand-held 1064?nm Raman spectrometer.

ABSTRACT: This is the first report of the use of a hand-held 1064?nm Raman spectrometer combined with red-shifted surface-enhanced Raman scattering (SERS) nanotags to provide an unprecedented performance in the short-wave infrared (SWIR) region. A library consisting of 17 chalcogenopyrylium nanotags produce extraordinary SERS responses with femtomolar detection limits being obtained using the portable instrument. This is well beyond previous SERS detection limits at this far red-shifted wavelength and opens up new options for SERS sensors in the SWIR region of the electromagnetic spectrum (between 950 and 1700?nm).

SUBMITTER: Kearns H

PROVIDER: S-EPMC5541563 | biostudies-literature | 2017 Jul

REPOSITORIES: biostudies-literature

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Sensitive SERS nanotags for use with a hand-held 1064 nm Raman spectrometer.

Kearns Hayleigh H Ali Fatima F Bedics Matthew A MA Shand Neil C NC Faulds Karen K Detty Michael R MR Graham Duncan D

Royal Society open science 20170719 7

This is the first report of the use of a hand-held 1064 nm Raman spectrometer combined with red-shifted surface-enhanced Raman scattering (SERS) nanotags to provide an unprecedented performance in the short-wave infrared (SWIR) region. A library consisting of 17 chalcogenopyrylium nanotags produce extraordinary SERS responses with femtomolar detection limits being obtained using the portable instrument. This is well beyond previous SERS detection limits at this far red-shifted wavelength and ope ...[more]

PMID: 28791168

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