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

Hayleigh Kearns, Matthew A. Bedics, Neil C. Shand, Karen Faulds, Michael R. Detty, Duncan Graham*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

22 Citations (Scopus)
75 Downloads (Pure)


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.
Original languageEnglish
Pages (from-to)5062-5065
Number of pages4
Issue number17
Early online date14 Jan 2016
Publication statusPublished - 7 Sept 2016


  • chalcogenopyrylium nanota
  • 1550 nm laser excitation
  • gold nanoparticle


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