Zobrazeno 1 - 10
of 139
pro vyhledávání: '"V. Ya. Shafirovich"'
Autor:
Peter P. Levin, V. Ya. Shafirovich
Publikováno v:
Russian Chemical Bulletin. 50:599-606
Nanosecond laser flash photolysis technique is used to study the formation and decay kinetics of covalently linked triplet radical pairs (RP) formed after photoinduced electron transfer in the series of 21 zinc porphyrin—chain—viologen (Pph—Spn
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::e314f169c517603231044d492c12b0d2
https://doi.org/10.1023/a:1011340223743
https://doi.org/10.1023/a:1011340223743
Publikováno v:
Russian Chemical Bulletin. 44:427-431
The recombination kinetics of three photogenerated covalently-linked ketyl-phenoxyl triplet radical pairs,3[PhC.(OD)C6H4O(CH2) n OC6H4C6H4O.] (n=3, 6, and 10), and of the corresponding deuterated derivatives were examined by the laser flash technique
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::6988f4f4276587e2f965496d875aabe4
https://doi.org/10.1007/bf00702380
https://doi.org/10.1007/bf00702380
Publikováno v:
The Journal of Physical Chemistry. 96:10044-10048
The geminate recombination kinetics of ketyl-phenoxyl radical pairs (RP) produced by quenching of triplet benzophenone by 4-phenylphenol and in corresponding perdeuteriated system in micellar solutions of sodium octyl (SOS) or dodecyl sulfates (SDS)
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::2eb4591681ed9de70b9d28ad22d8b4d4
https://doi.org/10.1021/j100203a083
https://doi.org/10.1021/j100203a083
Publikováno v:
Bulletin of the Academy of Sciences of the USSR Division of Chemical Science. 39:2282-2285
Analysis of variations in the PMR chemical shifts of viologens arising from additions of a water-soluble zinc(II) porphyrin makes it possible to carry out a qualitative determination of the structure of molecular complexes formed between the metallop
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::c7fe3fa1364e629488ad4a95c0730648
https://doi.org/10.1007/bf00958838
https://doi.org/10.1007/bf00958838
Publikováno v:
Bulletin of the Academy of Sciences of the USSR Division of Chemical Science. 39:1156-1159
Rate constants have been determined for electron phototransfer reactions in ethanol solutions of the following associated (bonded) systems: zinc porphyrin-viologen, and zinc porphyrin-viologen-quinone. In the case of the zinc porphyrin-viologen-quino
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::2b92563aa6d290921a5baa70d1f2dede
https://doi.org/10.1007/bf00962375
https://doi.org/10.1007/bf00962375
Publikováno v:
Journal of Photochemistry and Photobiology A: Chemistry. 84:233-235
Photoinduced electron transfer (ET) reactions in the zinc porphyrin-crown ether (ZnPCE) supramolecule, in which one crown ether moiety containing Eu3+ as electron acceptor is convalently linked to zinc porphyrin (ZnP), were studied by flash photolysi
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::afe4ec10a42af55388e4d44318cccdee
https://doi.org/10.1016/1010-6030(94)03865-1
https://doi.org/10.1016/1010-6030(94)03865-1
Publikováno v:
Photochemical Conversion and Storage of Solar Energy ISBN: 9789401055024
The design of the supramolecules: Zn-porphyrin-viologen dyads and Zn-porphyrin-viologen-quinone triads, which give rise to charge separation and stabilization after absorption of visible light in polar media has been developed. The photoinduced charg
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::e59f0dd5298d94caf270bb9be880dacf
https://doi.org/10.1007/978-94-011-3396-8_4
https://doi.org/10.1007/978-94-011-3396-8_4
Publikováno v:
Bulletin of the Academy of Sciences of the USSR Division of Chemical Science. 38:231-235
1. The complexing constants of eosin (ZD=−2) and zinc porphyrins (ZD=+4, −4) with charged viologens (ZA=0 to +4) with different ionic strengths were determined. 2. It was shown that ΔG of complexing can be considered the additive sum of the ΔG
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::72564af23df8a8ae3dc07955b8ec3bde
https://doi.org/10.1007/bf00953602
https://doi.org/10.1007/bf00953602
Autor:
V. Ya. Shafirovich, T. S. Dzhabiev
Publikováno v:
Reaction Kinetics and Catalysis Letters. 4:419-423
The photoreduction of Mn(IV) sulfate in 6–10 M H2SO4 has been studied. The kinetics of the photoreaction are similar to that of the thermal oxidation of water by Mn(IV) sulfate. A strong dependence of the quantum yield on the energy of the absorbed
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::5f3ed90d4f99eba98de3866a11d6d99b
https://doi.org/10.1007/bf02342584
https://doi.org/10.1007/bf02342584
Publikováno v:
Reaction Kinetics and Catalysis Letters. 4:11-18
Kinetics of the Mn(IV)→Mn(III) transition in the oxidation of watet to O2 was investigated at 60–100°C in 6–15 M H2SO4. The reaction is approximately 2-nd order in Mn(IV) concentration in the process of oxidation and 1-st order in initial Mn(I
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::63cfa59e941c5d2659593aa0490360a6
https://doi.org/10.1007/bf02073964
https://doi.org/10.1007/bf02073964