Bright Three-Photon Luminescence from Gold/Silver Alloyed Nanostructures for Bioimaging with Negligible Photothermal Toxicity

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...

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Veröffentlicht in:	Angewandte Chemie International Edition 2010-05, Vol.49 (20), p.3485-3488
Hauptverfasser:	Tong, Ling, Cobley, Claire M., Chen, Jingyi, Xia, Younan, Cheng, Ji-Xin
Format:	Artikel
Sprache:	eng
Schlagworte:	Alloys - chemistry Animals biosensors Gold - chemistry Humans KB Cells Liver - drug effects Luminescence nanostructures Nanostructures - chemistry Nanostructures - toxicity Nanostructures - ultrastructure near-infrared imaging Photochemical Processes Photons photothermal toxicity Silver - chemistry Temperature
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Beschreibung
Zusammenfassung:	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.
ISSN:	1433-7851 1521-3773
DOI:	10.1002/anie.201000440