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Bright three-photon luminescence from gold/silver alloyed nanostructures for bioimaging with negligible photothermal toxicity

  • Ling Tong
  • , Claire M. Cobley
  • , Jingyi Chen
  • , Younan Xia
  • , Ji Xin Cheng

Research output: Contribution to journalArticlepeer-review

Abstract

(Figure Equation Present). Au/Ag alloyed nanostructures exhibit a bright three-photon luminescence (3PL; see picture, left) upon excitation by a femtosecond laser at 1290 nm, with an intensity level one order of magnitude higher than pure Au or Ag nanoparticles. As the excitation is outside the range of plasmon resonance, 3PL enables bioimaging (right) with negligible photothermal toxicity.

Original languageEnglish (US)
Pages (from-to)3485-3488
Number of pages4
JournalAngewandte Chemie - International Edition
Volume49
Issue number20
DOIs
StatePublished - May 3 2010
Externally publishedYes

Keywords

  • Biosensors
  • Luminescence
  • Nanostructures
  • Near-infrared imaging
  • Photothermal toxicity

ASJC Scopus subject areas

  • Catalysis
  • General Chemistry

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