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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Bibliographic Details
Published inJournal of applied spectroscopy Vol. 90; no. 5; pp. 988 - 994
Main Authors Zamkovets, A. D., Barbarchik, E. A., Ponyavina, A. N., Tikhomirov, S. A., Binh, Nguyen Thanh, Minh, Pham Hong
Format Journal Article
LanguageEnglish
Published New York Springer US 01.11.2023
Springer Nature B.V
Subjects
Absorption
Analytical Chemistry
Atomic/Molecular Structure and Spectra
Metal phthalocyanines
Nanocomposites
Nanoparticles
Physics
Physics and Astronomy
Plasmonics
Relaxation time
Silver
organic semiconductors
induced absorption
hybrid structures
silver nanoparticles
relaxation kinetics of electronic excitation
surface plasmon resonance
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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) n Ag nanocomposites.
ISSN:0021-9037
1573-8647
DOI:10.1007/s10812-023-01623-6