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

被引：12

作者：

Kearns, Hayleigh ^{[1
]}

Ali, Fatima ^{[1
]}

Bedics, Matthew A. ^{[2
]}

Shand, Neil C. ^{[3
]}

Faulds, Karen ^{[1
]}

Detty, Michael R. ^{[2
]}

Graham, Duncan ^{[1
]}

机构：

[1] Univ Strathclyde, Technol & Innovat Ctr, Dept Pure & Appl Chem, 99 George St, Glasgow G1 1RD, Lanark, Scotland

[2] Univ Buffalo State Univ New York, Dept Chem, Buffalo, NY 14260 USA

[3] Dstl, Salisbury SP4 0JQ, Wilts, England

来源：

ROYAL SOCIETY OPEN SCIENCE | 2017年 / 4卷 / 07期

基金：

美国国家科学基金会; 英国工程与自然科学研究理事会;

关键词：

hand-held Raman spectrometer; short-wave infrared excitation; surface-enhanced Raman scattering nanotags; limits of detection; hollow gold nanoshells; chalcogenopyrylium dyes; HOLLOW GOLD NANOSPHERES; SAFE LASER EXCITATION; SILVER ELECTRODE; OPTICAL-PROPERTIES; SCATTERING; SPECTROSCOPY; PYRIDINE; SPECTRA; MOLECULES;

D O I：

10.1098/rsos.170422

中图分类号：

O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];

学科分类号：

07 ; 0710 ; 09 ;

摘要：

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).

引用

页数：9

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