Deactivation of triplet states of the metalloporphyrins by molecular oxygen

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The values of the phosphorescence decay time of the metalloporphyrins upon selective excitation into the absorption bands and the atmospheric concentration of molecular oxygen in solution has been recorded at 293 K. It was demonstrated that the decay time of triplet states depends on the polarity of the solvents, as well as on the wavelength of the excitation.

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Sobre autores

A. Starukhin

B.I. Stepanov Institute of Physics of the National Academy of Sciences of Belarus

Autor responsável pela correspondência
Email: a.starukhin@ifanbel.bas-net.by
Belarus, Minsk

A. Ilyin

B.I. Stepanov Institute of Physics of the National Academy of Sciences of Belarus

Email: a.starukhin@ifanbel.bas-net.by
Belarus, Minsk

T. Pavich

B.I. Stepanov Institute of Physics of the National Academy of Sciences of Belarus

Email: a.starukhin@ifanbel.bas-net.by
Belarus, Minsk

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2. Fig. 1. Structural formulae of 2,3,7,8,12,13,17,18-octaethylporphyrin (a) and 5,10,15,20-tetraphenylporphyrin (b), where M = Pd- and Pt-

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3. Fig. 2. Absorption spectra for Pt-OER in TOL at different optical densities of solutions (a) and phosphorescence spectrum of Pt-OER in TOL (λvozb = 382 nm) (b) at atmospheric oxygen concentration and 293 K

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4. Fig. 3. Absorption spectra of Pd-TPR (a) in DCM at different optical densities of the solutions, and fluorescence and phosphorescence spectra (b) of Pd-OER in TOL (1) and Pd-TPR in DCM (2) at atmospheric oxygen concentration and 293 K

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