Singlet-triplet excitation of room-temperature phosphorescence of 1-bromonaphthalene–β-cyclodextrin–cyclohexane ternary complexes

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Abstract

The spectra and kinetics of room-temperature phosphorescence of ternary complexes of 1-chloronaphthalene and 1-bromonaphthalene with β-cyclodextrin and cyclohexane were studied. The lifetimes of phosphorescence of ternary complexes measured at room temperature in the absence of oxygen were 214 and 10 ms for 1-chloronaphthalene and 1-bromonaphthalene, respectively. Triplet-triplet annihilation was detected for 1-bromonaphthalene complexes and the possibility of direct excitation of triplet states as a result of singlet-triplet absorption was shown.

About the authors

D. E. Makhrov

Photochemistry Center, Crystallography and Photonics Complex, NRC Kurchatov Institute; Moscow Institute of Physics and Technology

119421 Moscow, Russian Federation; 141707 Dolgoprudny, Russian Federation

D. S. Ionov

Photochemistry Center, Crystallography and Photonics Complex, NRC Kurchatov Institute

Email: dmitriy.ionov@gmail.com
119421 Moscow, Russian Federation

I. V. Ionova

Photochemistry Center, Crystallography and Photonics Complex, NRC Kurchatov Institute

119421 Moscow, Russian Federation

M. V. Alfimov

Photochemistry Center, Crystallography and Photonics Complex, NRC Kurchatov Institute; Moscow Institute of Physics and Technology

119421 Moscow, Russian Federation; 141707 Dolgoprudny, Russian Federation

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