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AbstractAbstract
[en] A photogalvanic effect has been found on irradiation of an acetonitrile solution of hydrated uranyl nitrate. The maximum voltage obtained is 0.6V. The influence of concentration, wavelength, cell geometry upon the electrical yield are shown. The suggested mechanism relies on the oxydation of water by the excited uranyl ion
[fr]
Un effet photogalvanique a ete trouve par irradiation du nitrate d'uranyle hydrate en solution dans l'acetonitrile. L'influence de la concentration, de la longueur d'onde et de la geometrie de la cellule sur le rendement electrique sont exposees. Le mecanisme suggere est base sur l'oxydation de l'eau par l'ion uranyle exciteOriginal Title
Effet photogalvanique utilisant le nitrate d'uranyle
Record Type
Journal Article
Journal
Nouveau Journal de Chimie; ISSN 0398-9836;
; v. 5(3); p. 149-152

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Universidad de La Habana (UH), La Habana (Cuba); Instituto de Ciencia y Tecnologia de Materiales (IMRE), Universidad de La Habana (UH), La Habana (Cuba); Facultad de Fisica, Universidad de La Habana (UH), La Habana (Cuba); Facultad de Quimica, Universidad de La Habana (UH), La Habana (Cuba); Facultad de Biologia, Universidad de La Habana (UH), La Habana (Cuba). Funding organisation: Academia de Ciencias de la Reublica de Cuba (ACC), La Habana (Cuba); CUBASOLAR, La Habana (Cuba); Centro Latinoamericano de Fisica (CLAF), Rio de Janeiro (Brazil); European Photochemistry Association (EPA) (France); Sociedad Cubana de Fisica (SCF), La Habana (Cuba); Sociedad Cubana de Quimica, La Habana (Cuba)2008
AbstractAbstract
[en] This Booklet contains the abstracts of the invited lectures, courses and contributions to the IV International Symposium and School on Photobiology, Photophysics and Photochemistry FOTOCIENCIAS 2008 (National Capitol, Havana, Cuba, December 1rst to 6, 2008). FOTOCIENCIAS has been an interesting Scientific Meeting along its editions for researchers of many countries, especially from Latin America. In each FOTOCIENCIAS the participants have learned and taught a lot. Therefore, FOTOCIENCIAS has become an important forum for scientific interchange in the fields of Photobiology, Photophysics and Photochemistry. We also wish to remark our acknowledgment to all the sponsors of FOTOCIENCIAS 2008. We hope you will enjoy FOTOCIENCIAS 2008 and Havana We thank all the authors for their contributions to FOTOCIENCIAS 2008. (author)
Original Title
Memorias de la IV Simposio y Escuela Internacional sobre Fotobiologia, Fotofisica y Fotoquimica (FOTOCIENCIAS 2008)
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6 Dec 2008; [65 p.]; Facultad de Fisica, Universidad de La Habana; La Habana (Cuba); FOTOCIENCIAS 2008: 4. International Symposium and School on Photobiology, Photophysics and Photochemistry; IV Simposio y Escuela Internacional sobre Fotobiologia, Fotofisica y Fotoquimica (FOTOCIENCIAS 2008); La Habana (Cuba); 1-6 Dec 2008; Available from Centro de Gestion de la Informacion y Desarrollo de la Energia (Cubaenergia), La Habana (CU), Email: belkis@cubaenergia.cu; iraida@cubaenergia.cu
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Miscellaneous
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AbstractAbstract
No abstract available
Source
(c) 2008 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA)
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AbstractAbstract
No abstract available
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International symposium on photochemistry and photophysics of molecules and ions; St. Petersburg (Russian Federation); 29 Jul - 2 Aug 1996; Translated from Optika i Spektroskopiya , ISSN 0030-4034, 83, 534-538 (October 1997); (c) 1997 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA)
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Journal Article
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Conference; Translation
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AbstractAbstract
[en] Highlights: Excitation of the 15ZPg state of RcaE photoreceptor generates three primary photoproducts. Only the Lumi-Go, photoproduct propagates to generate the 15EPr state. Excitation of 15EPr generates the Lumi-Rf photoproduct with an anomalously long living lifetime. Cyanobacteriochrome RcaE regulates Type III complementary chromatic adaption in the cyanobacterium Fremyella diplosiphon by photoswitching between a green-absorbing dark state (15ZPg) and red-absorbing photoproduct (15EPr). Ultrafast photodynamics of RcaE involve tautomerization of the bilin chromophore, inhomogeneity, and the generation of three primary photointermediates in the forward reaction (Lumi-Go, Lumi-Gr, and Lumi-Gf). The secondary photodynamics reported here show that only Lumi-Go evolves to 15EPr via spectrally similar Meta-Go1 and Meta-Go2 intermediates, with a protonation reaction occurring at the final step on the millisecond timescale. Reverse reaction dynamics were characterized and reveal an unusually long-lived Lumi-Rf photoproduct and a blue-shifted Meta-Ry intermediate.
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S000926141500932X; Available from http://dx.doi.org/10.1016/j.cplett.2015.11.059; Copyright Copyright (c) 2015 Elsevier B.V. All rights reserved.; Country of input: International Atomic Energy Agency (IAEA)
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Wampler, F.B.
Los Alamos National Lab., NM (USA)1982
Los Alamos National Lab., NM (USA)1982
AbstractAbstract
[en] Photochemistry has been influenced greatly by the application of lasers as excitation sources. Comparisons are made below to illustrate this impact and to show how lasers have revolutionized this research field
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Source
1982; 8 p; 1. international congress on applications of lasers and electro-optics; Boston, MA (USA); 21 - 23 Sep 1982; CONF-820949--1; Available from NTIS., PC A02/MF A01 as DE82021892
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Report
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AbstractAbstract
No abstract available
Source
Australian Inst. of Nuclear Science and Engineering, Lucas Heights; 76 p; 1986; p. 58; 13. AINSE radiation chemistry conference; Lucas Heights (Australia); 12-14 Nov 1986; Published in summary form only.
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Miscellaneous
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AbstractAbstract
No abstract available
Original Title
Fotoquimica de olefinas homoconjugadas com anel benzenico
Source
33. Annual Meeting of the Brazilian Society for the Advancement of Science; Salvador, Brazil; 8 - 15 Jul 1981; Published in summary form only.
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Journal Article
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Conference
Journal
Ciencia e Cultura; ISSN 0009-6725;
; v. 33(7); p. 386

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Clerc, Michel.
CEA Centre d'Etudes Nucleaires de Saclay, 91 - Gif-sur-Yvette (France). Dept. de Physico-Chimie1980
CEA Centre d'Etudes Nucleaires de Saclay, 91 - Gif-sur-Yvette (France). Dept. de Physico-Chimie1980
AbstractAbstract
No abstract available
Original Title
La photochimie et la separation isotopique par laser
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Apr 1980; 2 p; 1980 European conference on optics; Pont-a-Mousson, France; 22 - 25 Apr 1980; Published in summary form only.
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AbstractAbstract
[en] Two pheomelanin model compounds were prepared and their photochemistries examined. Upon irradiation, an oxygen-mediated photopolymerization reaction was observed. The photopolymers obtained were characterized by their apparent molecular weights, UV and fluorescence spectra. The implications of these findings with respect to the structure and photobiology of pheomelanin are discussed. (author)
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Journal Article
Journal
Photochemistry and Photobiology; ISSN 0031-8655;
; v. 36(2); p. 251-254

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