Enhanced Nonlinear Photoluminescence of Au–Carbon Dot Nanohybrids Produced by Photocatalytic Reduction of Au(III) Ions

Nanohybrids composed of carbon dots and gold nanoparticles are of considerable interest for luminescence imaging, photocatalysis, luminescence sensing and nonlinear optics. We describe a method for controlled growth of Au nanoparticles on the carbon nanodots by photocatalytic reduction of Au(III) io...

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Bibliographic Details
Published in:JETP letters 2021-12, Vol.114 (11), p.665-673
Main Authors: Astafiev, A. A., Shakhov, A. M., Minayeva, S. A., Nadtochenko, V. A.
Format: Article
Language:English
Subjects:
Atomic
Biological and Medical Physics
Biophysics
Broadband
Carbon
Carbon dots
Gold
Infrared lasers
Light irradiation
Luminescence
Molecular
Nanoparticles
Nonlinear optics
Optical and Plasma Physics
Optics and Laser Physics
Particle and Nuclear Physics
Photocatalysis
Photoluminescence
Physics
Physics and Astronomy
Quantum Information Technology
Reduction
Solid State Physics
Spintronics
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Summary:Nanohybrids composed of carbon dots and gold nanoparticles are of considerable interest for luminescence imaging, photocatalysis, luminescence sensing and nonlinear optics. We describe a method for controlled growth of Au nanoparticles on the carbon nanodots by photocatalytic reduction of Au(III) ions under blue light irradiation. The resulting Au–carbon dots nanohybrids exhibit enhanced nonlinear photoluminescence under near-infrared femtosecond laser excitation with intensity which sharply depends on the gold-to-carbon dots volume ratio. Bright broadband photoluminescence of nanohybrids makes them attractive for luminescent imaging.
ISSN:0021-3640
1090-6487
DOI:10.1134/S0021364021230016