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Extreme red shifted SERS nanotags.

ABSTRACT: Surfaced enhanced Raman scattering (SERS) nanotags operating with 1280 nm excitation were constructed from reporter molecules selected from a library of 14 chalcogenopyrylium dyes containing phenyl, 2-thienyl, and 2-selenophenyl substituents and a surface of hollow gold nanoshells (HGNs). These 1280 SERS nanotags are unique as they have multiple chalcogen atoms available which allow them to adsorb strongly onto the gold surface of the HGN thus producing exceptional SERS signals at this long excitation wavelength. Picomolar limits of detection (LOD) were observed and individual reporters of the library were identified by principal component analysis and classified according to their unique structure and SERS spectra.

SUBMITTER: Bedics MA

PROVIDER: S-EPMC5645778 | biostudies-literature | 2015 Apr

REPOSITORIES: biostudies-literature

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Extreme red shifted SERS nanotags.

Bedics Matthew A MA Kearns Hayleigh H Cox Jordan M JM Mabbott Sam S Ali Fatima F Shand Neil C NC Faulds Karen K Benedict Jason B JB Graham Duncan D Detty Michael R MR

Chemical science 20150121 4

Surfaced enhanced Raman scattering (SERS) nanotags operating with 1280 nm excitation were constructed from reporter molecules selected from a library of 14 chalcogenopyrylium dyes containing phenyl, 2-thienyl, and 2-selenophenyl substituents and a surface of hollow gold nanoshells (HGNs). These 1280 SERS nanotags are unique as they have multiple chalcogen atoms available which allow them to adsorb strongly onto the gold surface of the HGN thus producing exceptional SERS signals at this long exci ...[more]

PMID: 29308144

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