Dynamics of photoinduced electron transfer in multiporphyrin nanoassemblies
ИздательствоWorld Scientific Publishing Co.
Kilin, D. Dynamics of photoinduced electron transfer in multiporphyrin nanoassemblies / D. Kilin, E. Zenkevich, C. von Borczyskowski // Proceedings of the International Conference “Nanomeeting-2015”. Physics, Chemistry and Applications of Nanostructures. Reviews and Short Notes (May 26-29, 2015) / Eds. V. E. Borisenko, S. V. Gaponenko, V. S. Gurin, C.H. Kam. - New Jersey: World Scientific Publishing Co., 2015. - P. 12-15.
In self-assembled nanoscale porphyrin triads based on Zn-octaethylporphyrin chemical dimer (donor, D) and dipyridyl substituted porphyrin free base (acceptor, A), fluorescence quenching of D (down to 1.7-10 ps) and A (by ~1.3-1.6 times) subunits is strongly dependent on the solvent polarity (toluene-acetone mixtures) and temperature (77-350 K). The obtained experimental findings are analyzed using the reduced density matrix formalism in the frame of Haken-Strobl-Reineker approach taking into account the energy transfer, charge separation, and the dephasing of coherence between the excited electronic states of the triad.