4 research outputs found
До питання про участь В. В. Тарновського- молодшого у земському ліберальному русі на півночі Лівобережної України (60–80-ті рр. ХІХ ст.)
No full textThe article is devoted to the actual and unresolved scientific problem of Ukrainian historical science – the question of the probable participation of the bright representative of the Ukrainian national aristocracy, a well-known public figure, philanthropist and patron, V. V. Tarnovsky-Jr. in the zemsky liberal movement in the north of the Left Bank of Ukraine (60–80 r.). On the basis of little-known and not well-researched sources discovered by the author, which are first introduced into scientific circulation; with the help of scientific methods of research – analysis and synthesis, deduction and induction, typology, classification and generalization, anthropological and retrospective method, content analysis, historical and dissemination and historical and genetic methods, thoroughly considered historical facts that showed the presence of contacts and contacts V. V. Tarnovsky-Jr. with the opposition fronts. As a result, the author comes to the reasonable conclusion that the younger Tarnovsky was not a full member of the specified liberation movement, there was no evidence of his active political activity in this field; his involvement in zemsky liberalism was formal and symbolic. Mutual interest of Frontender and younger Tarnovsky was caused by political calculations. However, the undeniable positive of these contacts should be considered the beginning of the extremely active and large-scale charitable work of V. Tarnovsky-Jr. in favor of the zemsky institutions of the region and the public of the region.Стаття присвячена актуальній та не розв’язаній до цього часу науковій проблемі української історичної науки – питанню вірогідної участі яскравого представника української національної аристократії, відомого громадського діяча, благодійника та мецената – В. В. Тарновського-молодшого у земському ліберальному русі на півночі Лівобережної України (60–80-ті рр. ХІХ ст.). На основі виявлених автором маловідомих та малодосліджених джерел, які вперше вводяться у науковий обіг, всебічно розглянуті історичні факти, які свідчили про наявність контактів та зв’язків В. Тарновського-молодшого з опозиційною фрондою. У результаті автор приходить до обґрунтованого висновку про те, що молодший Тарновський не був повноправним членом вказаного визвольного руху, жодних підтверджень його активної політичної діяльності на цій ниві не виявлено, його причетність до земського лібералізму була формальною і символічною
STRUCTURE OF THE PHOTOCHEMICAL REACTION PATHWAYS POPULATED VIA THE PROMOTION of CFI and CHI INTO THEIR FIRST ELECTRONICALLY EXCITED STATES
No full textAuthor Institution: Department of Chemistry and Center for Photochemical Sciences, Bowling Green State University, Bowling Green, OH 43403The photochemical reaction pathways following the promotion of CFI and CHI into their lowest lying electronically excited states are reported. The pathways are mapped using the complete active space self-consistent field (CASSCF) method. The S to S transitions in both molecules are found to be n to sigma* type transitions. The relaxation of the electronically excited CFI* and CHI* molecules from the initially excited Frank-Condon (FC) region to the product wells on the ground-state potential energy surface are found to occur via conical intersections. The results from our computational investigations explain the selectivity of photoproduct formation previously observed in gas-phase experiments on one hand, where some obvious conclusions about the condensed-phase photochemistry of these molecules can also be drawn
M.: The effect of the charge-separating interface on exciton dynamics in photocatalytic colloidal heteronanocrystals
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ULTRAFAST EXCITED-STATE DYNAMICS IN MODEL HEXABROMOPLATINATE (IV) AND HEXABROMOOSMIATE (IV) DIANIONS IN THE CONDENSED PHASE
No full textAuthor Institution: Bowling Green University, Department of Chemistry and Center for Photochemical Sciences, Bowling Green, Ohio 43403Photoexcitation of hexabromoplatinate and hexabromoosmate dianions in CT and ligand field states results in remarkably fast formation (sub 100 fs) of coherently excited photoproducts assigned to and . This is explained by the fact that one of the lowest triplet excited states in both and is repulsive. Surprisingly, the damping time and amplitude of the observed coherent oscillations in the pentabromoosmate (209 cm) and pentabromoplatinate (112 cm) species is quite different. The shorter damping time (0.4 ps) of in comparison with the damping time (1 ps) of in aqueous solution is related to faster dephasing in . The large-amplitude bending oscillations in pentabromoplatinate are tentatively assigned to the passage of the wavepacket through the Janh-Teller conical intersection(s), whereas in pentabromoosmate, the umbrella type of oscillations appears to be due to the coupling to the Os-Br symmetric stretching mode in the parent dianion. The coherent oscillations in both photoproducts show no dependence on solvent. The results are supported by DFT, TD-DFT and CASSCF/CASPT2 calculations of electronic structures, vertical electronic transitions and harmonic frequencies of initial dianions and photoproducts
