Spectral and Kinetic Properties of Plasmon Hybrid Nanocomposites Based on Copper Phthalocyanine and Silver
Femtosecond time-resolved pump–probe absorption kinetic spectroscopy was used to show that the presence of plasmonic silver nanoparticles in Ag–CuPc hybrid thin-fi lm nanocomposites leads to a significant reduction in the relaxation time of induced absorption from an excited singlet state of copper...
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Published in | Journal of applied spectroscopy Vol. 90; no. 5; pp. 988 - 994 |
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Main Authors | , , , , , |
Format | Journal Article |
Language | English |
Published |
New York
Springer US
01.11.2023
Springer Nature B.V |
Subjects | |
Online Access | Get full text |
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Summary: | Femtosecond time-resolved pump–probe absorption kinetic spectroscopy was used to show that the presence of plasmonic silver nanoparticles in Ag–CuPc hybrid thin-fi lm nanocomposites leads to a significant reduction in the relaxation time of induced absorption from an excited singlet state of copper phthalocyanine fi lm as compared to the pure fi lm. The observed effect is associated with intersystem crossing acceleration in CuPc molecules located in a nonuniform field near the surface of plasmonic silver nanoparticles in the hybrid nanocomposite. The detected effects were demonstrated to depend on the thickness of the copper phthalocyanine layers in the hybrid (Ag–CuPc)
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Ag nanocomposites. |
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ISSN: | 0021-9037 1573-8647 |
DOI: | 10.1007/s10812-023-01623-6 |