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<article article-type="research-article" dtd-version="1.3" xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xml:lang="ru"><front><journal-meta><journal-id journal-id-type="publisher-id">dan</journal-id><journal-title-group><journal-title xml:lang="ru">Доклады Национальной академии наук Беларуси</journal-title><trans-title-group xml:lang="en"><trans-title>Doklady of the National Academy of Sciences of Belarus</trans-title></trans-title-group></journal-title-group><issn pub-type="ppub">1561-8323</issn><issn pub-type="epub">2524-2431</issn><publisher><publisher-name>The Republican Unitary Enterprise Publishing House "Belaruskaya Navuka"</publisher-name></publisher></journal-meta><article-meta><article-id custom-type="elpub" pub-id-type="custom">dan-225</article-id><article-categories><subj-group subj-group-type="heading"><subject>Research Article</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="ru"><subject>ФИЗИКА</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="en"><subject>PHYSICS</subject></subj-group></article-categories><title-group><article-title>ЗАТУХАНИЕ S1-СОСТОЯНИЯ ПЕРИДИНИНА В СРЕДАХ РАЗЛИЧНОЙ ПОЛЯРНОСТИ И КОНФОРМЕРЫ</article-title><trans-title-group xml:lang="en"><trans-title>DECAY OF S1-STATE OF PERIDININ IN MEDIA OF DIFFERENT POLARITY AND CONFORMERS</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>ПАВЛОВИЧ</surname><given-names>В. С.</given-names></name><name name-style="western" xml:lang="en"><surname>PAVLOVICH</surname><given-names>V. S.</given-names></name></name-alternatives><email xlink:type="simple">u.s.paulovich@tut.by</email><xref ref-type="aff" rid="aff-1"/></contrib></contrib-group><aff xml:lang="ru" id="aff-1"><institution>Военная академия Республики Беларусь, Минск</institution><country>Belarus</country></aff><pub-date pub-type="collection"><year>2014</year></pub-date><pub-date pub-type="epub"><day>09</day><month>06</month><year>2016</year></pub-date><volume>58</volume><issue>3</issue><fpage>56</fpage><lpage>60</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; ПАВЛОВИЧ В.С., 2016</copyright-statement><copyright-year>2016</copyright-year><copyright-holder xml:lang="ru">ПАВЛОВИЧ В.С.</copyright-holder><copyright-holder xml:lang="en">PAVLOVICH V.S.</copyright-holder><license xml:lang="ru" license-type="creative-commons-attribution" xlink:href="https://creativecommons.org/licenses/by/4.0/" xlink:type="simple"><license-p>Данная работа распространяется под лицензией Creative Commons Attribution 4.0.</license-p></license><license xml:lang="en" license-type="creative-commons-attribution" xlink:href="https://creativecommons.org/licenses/by/4.0/" xlink:type="simple"><license-p>This work is licensed under a Creative Commons Attribution 4.0 License.</license-p></license></permissions><self-uri xlink:href="https://doklady.belnauka.by/jour/article/view/225">https://doklady.belnauka.by/jour/article/view/225</self-uri><abstract><p>Теория безызлучательных переходов, основанная на модели ориентационного уширения электронных уровней, использована для интерпретации литературных данных по влиянию полярности среды на длительность S1(Ag−)-состояния каротиноида перидинина. Сделан вывод, что молекулы перидинина сильно взаимодействуют с внутренним электрическим полем, создаваемым окружением. Вследствие этого в возбужденном S1(Ag−)-состоянии перидинин существует в виде двух конформеров I и II. Конформер I доминирует в нейтральных и слабо полярных средах и имеет постоянный дипольный момент (ПДМ) 40,7 Д. Его состояние классифицировано как состояние с внутримолекулярным переносом заряда S1(Ag−/ ICT). Конформер II существует в сильно полярных средах и имеет ПДМ 42,8 Д. Состояние конформера II рассматривается как состояние с разделенным зарядом S1(Ag−/ ICT).</p></abstract><trans-abstract xml:lang="en"><p>Theory of nonradiative transitions based on the model of the orientation broadening of electronic levels has been used to interpret the known data for the medium polarity effect on the lifetime of the S1(Ag−) state of peridinin. The findings allow assuming that the molecules of pigment heavily interact with the internal electric field produced by environment. In consequence of this, peridinin at the excited S1(Ag−) state exists in the form of different conformers I and II with permanent dipole moments of 40.7 and 42.8 D, respectively. Their structure is distinguished by turning the epoxycyclohexane ring relative to the polyene chain through about 180°. Conformer I is dominant in nonpolar and low polar media and is at the intramolecular charge transfer state S1(Ag−/ICT), − whereas conformer II exists in polar media and, as suggested, belongs to the charge separated state S1(Ag−/ICT).</p></trans-abstract></article-meta></front><back><ref-list><title>References</title><ref id="cit1"><label>1</label><citation-alternatives><mixed-citation xml:lang="ru">Mimuro M. et al. // Biochim. Biophys. Acta. 1992. Vol. 1098, N 2. P. 271–274.</mixed-citation><mixed-citation xml:lang="en">Mimuro M. et al. // Biochim. Biophys. Acta. 1992. Vol. 1098, N 2. 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