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Gold nanoparticle-mediated nanosecond laser-induced polystyrene carbonization with luminescent products
被引:0
作者:
Kudryashov, Andrey
[1
]
Gusev, Sergey
[2
]
Tatarskiy, Dmitry
[2
,3
]
Nadtochenko, Victor A.
[4
,5
]
Bityurin, Nikita
[1
]
机构:
[1] Russian Acad Sci, Inst Appl Phys, 46 Ulyanov St, Nizhnii Novgorod 603950, Russia
[2] Russian Acad Sci, Inst Phys Microstruct, GSP-105, Nizhnii Novgorod 603950, Russia
[3] NI Lobachevsky State Univ Nizhny Novgorod, 23 Gagarin Ave, Nizhnii Novgorod 603950, Russia
[4] RAS, Fed Res Ctr Chem Phys, Kosigin Str 4, Moscow 119991, Russia
[5] Moscow MV Lomonosov State Univ, Fac Chem, Moscow 11999, Russia
关键词:
RAMAN-SCATTERING;
CARBON DOTS;
ABLATION;
SPECTRA;
GROWTH;
METAL;
D O I:
10.1364/JOSAB.526018
中图分类号:
O43 [光学];
学科分类号:
070207 ;
0803 ;
摘要:
A highly soluble Au(I) gold precursor is used to produce a nanocomposite material consisting of a polystyrene matrix and gold nanoparticles. Irradiation of such a material with nanosecond laser pulses at the plasmon resonance wavelength leads to the formation of black spots containing luminescent products of carbonization. HR TEM analysis and Raman spectroscopy confirm disordered carbon. A simple model, based on laser heating of a nanoparticle to a temperature of more than 2000 K and stabilization of this temperature by the endothermic process of polystyrene carbonization, fits well with the dependence of the luminescent signal increment on the laser
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页码:1892 / 1900
页数:9
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