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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">zhps</journal-id><journal-title-group><journal-title xml:lang="ru">Журнал прикладной спектроскопии</journal-title><trans-title-group xml:lang="en"><trans-title>Zhurnal Prikladnoii Spektroskopii</trans-title></trans-title-group></journal-title-group><issn pub-type="ppub">0514-7506</issn><publisher><publisher-name>B. I. Stepanov Institute of Physics of the National Academy of Sciences</publisher-name></publisher></journal-meta><article-meta><article-id custom-type="elpub" pub-id-type="custom">zhps-2028</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>СПЕКТРОСКОПИЯ В БИОЛОГИИ И МЕДИЦИНЕ</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="en"><subject>SPECTROSCOPY IN BIOLOGY AND MEDICINE</subject></subj-group></article-categories><title-group><article-title>Фотофизика стирилцианиновых молекулярных зондов в растворах поверхностно-активных веществ</article-title><trans-title-group xml:lang="en"><trans-title>Photophysics of Styrylcyanine Molecular Probes in Solutions of Surfactants</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>Ярмухамедов</surname><given-names>А. Ш.</given-names></name><name name-style="western" xml:lang="en"><surname>Yarmukhamedov</surname><given-names>A. Sh.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Самарканд</p></bio><bio xml:lang="en"><p>Samarkand</p></bio><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Курталиев</surname><given-names>Э. Н.</given-names></name><name name-style="western" xml:lang="en"><surname>Kurtaliev</surname><given-names>E. N.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Самарканд</p></bio><bio xml:lang="en"><p>Samarkand</p></bio><email xlink:type="simple">kurtaliev@rambler.ru</email><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Хаиров</surname><given-names>И. Д.</given-names></name><name name-style="western" xml:lang="en"><surname>Khairov</surname><given-names>I. D.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Самарканд</p></bio><bio xml:lang="en"><p>Samarkand</p></bio><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Низомов</surname><given-names>Н.</given-names></name><name name-style="western" xml:lang="en"><surname>Nizomov</surname><given-names>N.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Самарканд</p></bio><bio xml:lang="en"><p>Samarkand</p></bio><xref ref-type="aff" rid="aff-1"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>Самаркандский государственный университет им. Ш. Рашидова</institution></aff><aff xml:lang="en"><institution>Sh. Rashidov Samarkand State University</institution></aff></aff-alternatives><pub-date pub-type="collection"><year>2025</year></pub-date><pub-date pub-type="epub"><day>26</day><month>11</month><year>2025</year></pub-date><volume>92</volume><issue>6</issue><fpage>793</fpage><lpage>801</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Ярмухамедов А.Ш., Курталиев Э.Н., Хаиров И.Д., Низомов Н., 2025</copyright-statement><copyright-year>2025</copyright-year><copyright-holder xml:lang="ru">Ярмухамедов А.Ш., Курталиев Э.Н., Хаиров И.Д., Низомов Н.</copyright-holder><copyright-holder xml:lang="en">Yarmukhamedov A.S., Kurtaliev E.N., Khairov I.D., Nizomov N.</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://zhps.ejournal.by/jour/article/view/2028">https://zhps.ejournal.by/jour/article/view/2028</self-uri><abstract><p>Методами абсорбционной и флуоресцентной спектроскопии изучена природа взаимодействия красителя Sbо (E)-2-(4-(диметиламино)стирил)-3-метилбензо[d]оксазол-3-иодида и его гомодимера Dbо-10 с мицеллами додецилсульфата натрия (SDS), цетилтриметиламмония бромида (СТАВ) и Тритона Х-100 (ТХ-100). Проанализирован механизм тушения флуоресценции красителя Sbo при образовании комплексов с мономерами SDS. Определены изменение свободной энергии (∆G0) и константы связывания (KS) молекул красителей с поверхностно-активными веществами. Проведены квантовохимические расчеты зарядового распределения и потенциальной энергии основного и возбужденного состояний молекулы красителей, на основании которых объясняется увеличение квантового выхода и времени жизни возбужденного состояния в мицеллах. На основе полученных результатов выявлено, что молекулы красителей локализуются в малополярной среде мицелл, где они изолированы от молекул воды.</p></abstract><trans-abstract xml:lang="en"><p>The nature of the interaction of the dye Sbо ((E)-2-(4-(dimethylamino)styryl)-3-methylbenzo[d]oxazol-3ium iodide) and its homodimer Dbо-10 with micelles of sodium dodecyl sulfate (SDS), cetyltrimethylammonium bromide (CTAB) and Triton X-100 (TX-100) has been studied using absorption and fluorescence spectroscopy. The mechanism of fluorescence quenching of Sbo dye during the formation of complexes with SDS monomers was analyzed. Binding constants (KS) of dye molecules with surfactants and free energy changes (∆G0) for the probe-micelle binding process were determined. Quantum-chemical calculations of the charge distribution and potential energy of the ground and excited states of the dye molecules were carried out, on the basis of which the increase in the values of the quantum yield and the fluorescence lifetime in micelles is explained. Based on the results obtained, it was revealed that dye molecules are localized in the low-polar environment of micelles, where they are isolated from water molecules.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>поглощение</kwd><kwd>флуоресценция</kwd><kwd>квантовый выход</kwd><kwd>кинетика затухания</kwd><kwd>время жизни возбужденного состояния</kwd><kwd>поверхностно-активное вещество</kwd><kwd>мицелла</kwd></kwd-group><kwd-group xml:lang="en"><kwd>absorption</kwd><kwd>fluorescence</kwd><kwd>quantum yield</kwd><kwd>decay kinetics</kwd><kwd>excited state lifetime</kwd><kwd>surfactant</kwd><kwd>micelle</kwd></kwd-group></article-meta></front><back><ref-list><title>References</title><ref id="cit1"><label>1</label><citation-alternatives><mixed-citation xml:lang="ru">N. Saxena, A. Goswami, P. K. Dhodapkar, M. C. Nihalani, A. Mandal. J. Pet. Sci. Eng., 176 (2019) 299—311, https://doi.org/10.1016/j.petrol.2019.01.052</mixed-citation><mixed-citation xml:lang="en">[1] N. Saxena, A. 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