caa a22 4500 475762231 CHVBK 20180406123554.0 cr unu---uuuuu 170329e20001101xx s 000 0 eng 10.1007/BF02494918 doi (NATIONALLICENCE)springer-10.1007/BF02494918 Levin P. N. M. Emanuel' Institute of Biochemical Physics, Russian Academy of Sciences, 4 ul. Kosygina, 117977, Moscow, Russian Federation aut Laser flash photolysis study of the phase transition effect on the kinetics of triplet-triplet annihilation of tetraphenylporphine in n -decanol [Elektronische Daten] [P. Levin] The kinetics of triplet-triplet annihilation of tetraphenylporphine (TPP) inn-decanol was studied by nanosecond laser flash photolysis with monitoring of the transient absorption and concomitant delayed fluorescence in the temperature range from 100 to −100°C. The freezing of the solution results in more than tenfold acceleration of the process within the same reaction mechanism. It is supposed that the phase transition is accompanied by the concentration of the TPP molecules in defect regions of the polycrystalline structure of the frozen alcohol. These domains have a homogeneous nature and are characterized by a high molecular mobility. Kluwer Academic/Plenum Publishers, 2000 laser photolysis nationallicence triplet-triplet annihilation nationallicence tetraphenylporphine nationallicence n -decanol nationallicence phase transition nationallicence Russian Chemical Bulletin Kluwer Academic Publishers-Plenum Publishers 49/11(2000-11-01), 1831-1833 1066-5285 49:11<1831 2000 49 11172 https://doi.org/10.1007/BF02494918 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/BF02494918 text/html Onlinezugriff via DOI NATIONALLICENCE 100 1- Levin P. N. M. Emanuel' Institute of Biochemical Physics, Russian Academy of Sciences, 4 ul. Kosygina, 117977, Moscow, Russian Federation aut NATIONALLICENCE 773 0- Russian Chemical Bulletin Kluwer Academic Publishers-Plenum Publishers 49/11(2000-11-01), 1831-1833 1066-5285 49:11<1831 2000 49 11172 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer