Email this article Long Lived Delayed Fluorescence of Ternary Naphthalene–β-Cyclodextrin–Cyclohexane Complexes at Room Temperature
- Authors: Ionov D.S.1, Ionova I.V.1, Mazalov M.A.1,2, Alfimov M.V.1,2
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Affiliations:
- Photochemistry Center, Federal Research Center Crystallography and Photonics, Russian Academy of Sciences
- Moscow Institute of Physics and Technology (State University)
- Issue: Vol 57, No 2 (2023)
- Pages: 91-99
- Section: PHOTONICS
- URL: https://rjeid.com/0023-1193/article/view/661512
- DOI: https://doi.org/10.31857/S0023119323010060
- EDN: https://elibrary.ru/PMKFEO
- ID: 661512
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Abstract
Long-lived delayed fluorescence of dispersions of microcrystals of naphthalene–β-cyclodextrin–cyclohexane ternary complexes has been studied. It has been established that the delayed fluorescence is due to the T–T annihilation process. The kinetics of delayed fluorescence has a nonexponential character; the average lifetime is 0.68 s. The shape of the decay rate curves of delayed fluorescence does not depend on the intensity of excitation light. The nonexponential nature of the delayed fluorescence is presumably associated with the presence in the crystals of paired naphthalene molecules with different mutual positions and pair formation energies.
Keywords
About the authors
D. S. Ionov
Photochemistry Center, Federal Research Center Crystallography and Photonics, Russian Academy of Sciences
Email: dmitriy.ionov@gmail.com
Moscow, 119421 Russia
I. V. Ionova
Photochemistry Center, Federal Research Center Crystallography and Photonics, Russian Academy of Sciences
Email: dmitriy.ionov@gmail.com
Moscow, 119421 Russia
M. A. Mazalov
Photochemistry Center, Federal Research Center Crystallography and Photonics, Russian Academy of Sciences; Moscow Institute of Physics and Technology (State University)
Email: dmitriy.ionov@gmail.com
Moscow, 119421 Russia; Dolgoprudnyi, Moscow oblast, 141701 Russia
M. V. Alfimov
Photochemistry Center, Federal Research Center Crystallography and Photonics, Russian Academy of Sciences; Moscow Institute of Physics and Technology (State University)
Author for correspondence.
Email: dmitriy.ionov@gmail.com
Moscow, 119421 Russia; Dolgoprudnyi, Moscow oblast, 141701 Russia
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