https://doi.org/10.1051/epjconf/201713202019
Wavelength dependence of the efficiency of singlet oxygen generation upon photoexcitation of photosensitizers
1 B.I. Stepanov Institute of Physics, NAS of Belarus, Minsk, Belarus
2 Institute of Physical Chemistry, Polish Academy of Sciences, Warsaw, Poland
* Corresponding author: a_starukhin@mail.ru
Published online: 13 December 2016
The dependence of the efficiency of singlet oxygen (1Δg) generation upon excitation of photosensitizer at different wavelength was observed for several derivatives of palladium porphyrin in carbon tetrachloride. The efficiency of singlet oxygen generation upon excitation in a blue region of the spectrum (Soret band) exceeds by several times the efficiency at excitation in the red spectral region (Q band). The effect of enhancement of singlet oxygen generation upon CW photoexcitation to Soret band of photosensitizer may be explained by influence of high laying triplet states of a donor molecule on the triplet-triplet energy transfer.
© The Authors, published by EDP Sciences, 2017
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