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Bright Three‐Photon Luminescence from Gold/Silver Alloyed Nanostructures for Bioimaging with Negligible Photothermal Toxicity
Author(s) -
Tong Ling,
Cobley Claire M.,
Chen Jingyi,
Xia Younan,
Cheng JiXin
Publication year - 2010
Publication title -
angewandte chemie international edition
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 5.831
H-Index - 550
eISSN - 1521-3773
pISSN - 1433-7851
DOI - 10.1002/anie.201000440
Subject(s) - luminescence , photothermal therapy , femtosecond , excitation , nanostructure , materials science , plasmon , surface plasmon resonance , nanotechnology , laser , nanoparticle , resonance (particle physics) , optoelectronics , optics , physics , atomic physics , quantum mechanics
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.