Extreme red shifted SERS nanotags

Matthew A. Bedics, Hayleigh Kearns, Jordan M. Cox, Sam Mabbott, Fatima Ali, Neil C. Shand, Karen Faulds, Jason B. Benedict, Duncan Graham, Michael R. Detty

Research output: Contribution to journalArticle

25 Citations (Scopus)

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.
LanguageEnglish
Pages2302-2306
Number of pages5
JournalChemical Science
Volume6
Issue number4
Early online date21 Jan 2015
DOIs
Publication statusPublished - 1 Apr 2015

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Raman scattering
Gold
Nanoshells
Chalcogens
Principal component analysis
Coloring Agents
Wavelength
Atoms
Molecules

Keywords

  • SERS nanotags
  • hollow gold nanoshells
  • limits of detection

Cite this

Bedics, M. A., Kearns, H., Cox, J. M., Mabbott, S., Ali, F., Shand, N. C., ... Detty, M. R. (2015). Extreme red shifted SERS nanotags. Chemical Science, 6(4), 2302-2306. https://doi.org/10.1039/C4SC03917C
Bedics, Matthew A. ; Kearns, Hayleigh ; Cox, Jordan M. ; Mabbott, Sam ; Ali, Fatima ; Shand, Neil C. ; Faulds, Karen ; Benedict, Jason B. ; Graham, Duncan ; Detty, Michael R. / Extreme red shifted SERS nanotags. In: Chemical Science. 2015 ; Vol. 6, No. 4. pp. 2302-2306.
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Bedics, MA, Kearns, H, Cox, JM, Mabbott, S, Ali, F, Shand, NC, Faulds, K, Benedict, JB, Graham, D & Detty, MR 2015, 'Extreme red shifted SERS nanotags' Chemical Science, vol. 6, no. 4, pp. 2302-2306. https://doi.org/10.1039/C4SC03917C

Extreme red shifted SERS nanotags. / Bedics, Matthew A.; Kearns, Hayleigh; Cox, Jordan M.; Mabbott, Sam; Ali, Fatima; Shand, Neil C.; Faulds, Karen; Benedict, Jason B.; Graham, Duncan; Detty, Michael R.

In: Chemical Science, Vol. 6, No. 4, 01.04.2015, p. 2302-2306.

Research output: Contribution to journalArticle

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Bedics MA, Kearns H, Cox JM, Mabbott S, Ali F, Shand NC et al. Extreme red shifted SERS nanotags. Chemical Science. 2015 Apr 1;6(4):2302-2306. https://doi.org/10.1039/C4SC03917C