caa a22 4500 605546266 CHVBK 20210128100939.0 cr unu---uuuuu 210128e20151101xx s 000 0 eng 10.1007/s00723-015-0705-0 doi (NATIONALLICENCE)springer-10.1007/s00723-015-0705-0 Time-Resolved Continuous-Wave and Pulse EPR Investigation of Photoinduced States of Zinc Porphyrin Linked with an Ethylenediamine Copper Complex [Elektronische Daten] [A. Sukhanov, K. Konov, K. Salikhov, V. Voronkova, E. Mikhalitsyna, V. Tyurin] Electron spin dynamics of the photoexcited state of a new porphyrin system built of a zinc porphyrin molecule with a linked complex of copper ion (ZnPCu) was studied using electron paramagnetic resonance (EPR) methods. The time-resolved continuous-wave and echo-detected EPR data show that electron spins of the ZnPCu system are polarized. The shape of the EPR spectrum and the echo-detected nutation spectroscopy data indicate that there is a relatively small spin-spin interaction between two subunits, namely, less than the zero-field splitting parameter of the excited triplet ZnP molecule. Results have been interpreted assuming that the S=1 Zn porphyrin subunit electron spins are polarized via the triplet mechanism and this polarization is transferred to the S=1/2 copper subunit via a flip-flop process induced by the exchange interaction between these subunits. The formation of the integral spin polarization in the triplet-doublet system as a function of the value and type of the triplet-doublet interaction was analyzed. Springer-Verlag Wien, 2015 Sukhanov A. Zavoisky Physical-Technical Institute, Russian Academy of Sciences, Sibirsky trakt 10/7, 420029, Kazan, Russia aut Konov K. Zavoisky Physical-Technical Institute, Russian Academy of Sciences, Sibirsky trakt 10/7, 420029, Kazan, Russia aut Salikhov K. Zavoisky Physical-Technical Institute, Russian Academy of Sciences, Sibirsky trakt 10/7, 420029, Kazan, Russia aut Voronkova V. Zavoisky Physical-Technical Institute, Russian Academy of Sciences, Sibirsky trakt 10/7, 420029, Kazan, Russia aut Mikhalitsyna E. A.N. Frumkin Institute of Physical Chemistry and Electrochemistry, Russian Academy of Sciences, Leninsky prospect 31-4, 119071, Moscow, Russia aut Tyurin V. A.N. Frumkin Institute of Physical Chemistry and Electrochemistry, Russian Academy of Sciences, Leninsky prospect 31-4, 119071, Moscow, Russia aut Applied Magnetic Resonance Springer Vienna 46/11(2015-11-01), 1199-1220 0937-9347 46:11<1199 2015 46 723 https://doi.org/10.1007/s00723-015-0705-0 text/html Onlinezugriff via DOI BK010053 XK010053 XK010000 Metadata rights reserved Springer special CC-BY-NC licence nationallicence 1 research-article jats NATIONALLICENCE NATIONALLICENCE NL-springer NATIONALLICENCE 856 40 https://doi.org/10.1007/s00723-015-0705-0 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Sukhanov A. Zavoisky Physical-Technical Institute, Russian Academy of Sciences, Sibirsky trakt 10/7, 420029, Kazan, Russia aut NATIONALLICENCE 700 1- Konov K. Zavoisky Physical-Technical Institute, Russian Academy of Sciences, Sibirsky trakt 10/7, 420029, Kazan, Russia aut NATIONALLICENCE 700 1- Salikhov K. Zavoisky Physical-Technical Institute, Russian Academy of Sciences, Sibirsky trakt 10/7, 420029, Kazan, Russia aut NATIONALLICENCE 700 1- Voronkova V. Zavoisky Physical-Technical Institute, Russian Academy of Sciences, Sibirsky trakt 10/7, 420029, Kazan, Russia aut NATIONALLICENCE 700 1- Mikhalitsyna E. A.N. Frumkin Institute of Physical Chemistry and Electrochemistry, Russian Academy of Sciences, Leninsky prospect 31-4, 119071, Moscow, Russia aut NATIONALLICENCE 700 1- Tyurin V. A.N. Frumkin Institute of Physical Chemistry and Electrochemistry, Russian Academy of Sciences, Leninsky prospect 31-4, 119071, Moscow, Russia aut NATIONALLICENCE 773 0- Applied Magnetic Resonance Springer Vienna 46/11(2015-11-01), 1199-1220 0937-9347 46:11<1199 2015 46 723