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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-2407</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>Статьи</subject></subj-group></article-categories><title-group><article-title>Спектроскопическое исследование взаимодействия стирилцианиновых красителей с сывороточным альбумином человека</article-title><trans-title-group xml:lang="en"><trans-title>Interaction of Styrylcyanine Dyes with Human Serum Albumin: a Spectroscopic Study</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>Ризакулова</surname><given-names>Л. Н.</given-names></name><name name-style="western" xml:lang="en"><surname>Rizakulova</surname><given-names>L. 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 contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Рахмoнова</surname><given-names>Н. Ш.</given-names></name><name name-style="western" xml:lang="en"><surname>Rakhmonova</surname><given-names>N. 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-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>Самаркандский государственный университет им. Ш. Рашидова</institution><country>Узбекистан</country></aff><aff xml:lang="en"><institution>Samarkand State University named after Sh. Rashidov</institution><country>Uzbekistan</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2026</year></pub-date><pub-date pub-type="epub"><day>28</day><month>09</month><year>2026</year></pub-date><volume>93</volume><issue>5</issue><fpage>652</fpage><lpage>662</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Ярмухамедов А.Ш., Курталиев Э.Н., Хаиров И.Д., Ризакулова Л.Н., Рахмoнова Н.Ш., 2026</copyright-statement><copyright-year>2026</copyright-year><copyright-holder xml:lang="ru">Ярмухамедов А.Ш., Курталиев Э.Н., Хаиров И.Д., Ризакулова Л.Н., Рахмoнова Н.Ш.</copyright-holder><copyright-holder xml:lang="en">Yarmukhamedov A.S., Kurtaliev E.N., Khairov I.D., Rizakulova L.N., Rakhmonova N.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://zhps.ejournal.by/jour/article/view/2407">https://zhps.ejournal.by/jour/article/view/2407</self-uri><abstract><p>Исследованы механизмы взаимодействия стирилцианиновых красителей Sbt ((E)-2-(4-(диметиламино)стирил)-3-метилбензо[d]триазол-3-иум иодид), Sbо ((E)-2-(4-(диметиламино)стирил)-3-метилбензо[d]оксазол-3-иум иодид), Sil ((E)-2-(4-(диметиламино)стирил)-1,3,3-триметил-3H-индолиум перхлорате) и их гомодимеров Dbt-10, Dbo-10, Dil-10 с сывороточным альбумином человека (САЧ) методом флуоресцентной спектроскопии с временным разрешением. Обнаружено существенное увеличение квантового выхода флуоресценции гомодимерных красителей при их связывании с САЧ. Определены константы связывания (Kс) этих красителей с САЧ, значения которых зависит от молекулярной структуры зондов. Выявлены предпочтительные сайты связывания молекул исследуемых соединений в глобуле САЧ. Результаты молекулярного моделирования показали, что ключевую роль в стабилизации комплексов играют гидрофобные взаимодействия и водородные связи с аминокислотными остатками белка.</p></abstract><trans-abstract xml:lang="en"><p>The mechanisms of interaction of styrylcyanine dyes Sbt ((E)-2-(4-(dimethylamino)styryl)-3-methylbenzo[d]thiazol-3-ium iodide), Sbo ((E)-2-(4-(dimethylamino)styryl)-3-methylbenzo[d]oxazol-3-ium iodide), Sil ((E)-2-(4-(dimethylamino)styryl)-1,3,3-trimethyl-3H-indolium perchlorate) and their homodimers Dbt-10, Dbo-10, Dil-10 with human serum albumin were studied by time-resolved fluorescence spectroscopy. A significant increase in the fluorescence quantum yield of the homodimer dyes upon their binding to human serum albumin was found. The binding constants (Kb) of these dyes to albumin were determined and were found to depend on the molecular structure of the probes. The preferred binding sites of the studied dyes within the albumin globule were identified. Molecular modeling results showed that hydrophobic interactions and hydrogen bonds with amino acid residues of the protein play a key role in stabilizing the complexes.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>гомодимерные красители</kwd><kwd>сывороточный альбумин человека</kwd><kwd>время жизни флуоресценции</kwd><kwd>кинетика затухания флуоресценции</kwd><kwd>молекулярный зонд</kwd></kwd-group><kwd-group xml:lang="en"><kwd>homodimer dyes</kwd><kwd>human serum albumin</kwd><kwd>fluorescence lifetime</kwd><kwd>fluorescence decay kinetics</kwd><kwd>molecular probe.</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">Y.-J. Hu, Y. Liu, X.-H. Xiao. Biomacromolecules, 10 (2009) 517—521, https://doi.org/10.1021/bm8014522</mixed-citation><mixed-citation xml:lang="en">Y.-J. Hu, Y. Liu, X.-H. Xiao. 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