Dependence of the values of fluorescence quantum yields for porphyrins and phthalocyanines from the effects of reabsorption

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Resumo

The values of fluorescence quantum yield upon using by the procedures of relative and of absolute quantum yields were measured for a set of porphyrins and phthalocyanines with different activities of bands in the absorption spectrum. The correlations between of the values quantum yields and optical densities at the absorption bands of the samples has been estimated that provides an opportunity to estimate the nature of the internal filter effects.

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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

V. Kouhar

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

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

V. Shershan

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

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

Bibliografia

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2. Fig. 1. Structural formulae of Mg-phthalocyanine (Mg-Ps) (a), Mg-tetraazaporphyrin (Mg-TAR) (b) and Mg-octaethylporphyrin (where M = H2-) (c)

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3. Fig. 2. Absorption spectrum of Mg-Pc (a) and fluorescence spectra in THF at different optical densities of samples in the absorption band at 340 nm at D = 0.05 (1); 0.1 (2) and 0.5 (3)

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4. Fig. 3. Absorption spectra (a) and fluorescence spectra (b) in wavelength scale (1) and energy scale (2) for Mg-Pc in THF at 293 K

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5. Fig. 4. Dependence of fluorescence ACV values on the optical density in the excitation band for Mg-Pc (a), Mg-TAR (b) and H2-OER (c), as well as the absorption spectrum of H2-OER (d) in THF at 293 K

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