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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 pub-id-type="doi">10.47612/0514-7506-2022-89-2-177-183</article-id><article-id custom-type="elpub" pub-id-type="custom">zhps-999</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>Формирование J-агрегатов 21-тиа-5,10,15,20-тетра-(4-сульфофенил)-порфирина в водных растворах</article-title><trans-title-group xml:lang="en"><trans-title>Formation of J-Aggregates of the 21-Thia-5,10,15,20-Tetra-(4-Sulfonatophenyl)-Porphyrin in Water Solutions</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>Мельник</surname><given-names>А. Д.</given-names></name><name name-style="western" xml:lang="en"><surname>Melnik</surname><given-names>A. D.</given-names></name></name-alternatives><bio xml:lang="ru"><p> Минск </p></bio><bio xml:lang="en"><p> Minsk </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>Жебит</surname><given-names>Т. С.</given-names></name><name name-style="western" xml:lang="en"><surname>Zhebit</surname><given-names>T. S.</given-names></name></name-alternatives><bio xml:lang="ru"><p>  Минск </p></bio><bio xml:lang="en"><p> Minsk </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>Крылов</surname><given-names>А. Б.</given-names></name><name name-style="western" xml:lang="en"><surname>Krylov</surname><given-names>A. B.</given-names></name></name-alternatives><bio xml:lang="ru"><p> Минск </p></bio><bio xml:lang="en"><p> Minsk </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>Пуховская</surname><given-names>С. Г.</given-names></name><name name-style="western" xml:lang="en"><surname>Pukhovskaya</surname><given-names>S. G.</given-names></name></name-alternatives><bio xml:lang="ru"><p> Иваново </p></bio><bio xml:lang="en"><p>Ivanovo</p></bio><email xlink:type="simple">svetlana.puhovskaya@mail.ru</email><xref ref-type="aff" rid="aff-2"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Иванова</surname><given-names>Ю. Б.</given-names></name><name name-style="western" xml:lang="en"><surname>Ivanova</surname><given-names>Yu. B.</given-names></name></name-alternatives><bio xml:lang="ru"><p> Иваново </p></bio><bio xml:lang="en"><p>Ivanovo</p></bio><email xlink:type="simple">jjiv@yandex.ru</email><xref ref-type="aff" rid="aff-3"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Крук</surname><given-names>Н. Н.</given-names></name><name name-style="western" xml:lang="en"><surname>Kruk</surname><given-names>M. M.</given-names></name></name-alternatives><bio xml:lang="ru"><p> Минск </p></bio><bio xml:lang="en"><p> Minsk </p></bio><email xlink:type="simple">krukmikalai@yahoo.com</email><xref ref-type="aff" rid="aff-1"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>Белорусский государственный технологический университет</institution></aff><aff xml:lang="en"><institution>Belarusian State Technological University</institution></aff></aff-alternatives><aff-alternatives id="aff-2"><aff xml:lang="ru"><institution>Ивановский государственный химико-технологический университет</institution></aff><aff xml:lang="en"><institution>Ivanovo State University of Chemistry and Technology</institution></aff></aff-alternatives><aff-alternatives id="aff-3"><aff xml:lang="ru"><institution>Ивановский государственный химико-технологический университет;&#13;
Институт химии растворов имени Г. А. Крестова Российской АН</institution></aff><aff xml:lang="en"><institution>Ivanovo State University of Chemistry and Technology;&#13;
G. A. Krestov Institute of Solution Chemistry of Russian Academy of Sciences</institution></aff></aff-alternatives><pub-date pub-type="collection"><year>2022</year></pub-date><pub-date pub-type="epub"><day>22</day><month>03</month><year>2022</year></pub-date><volume>89</volume><issue>2</issue><fpage>177</fpage><lpage>183</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Мельник А.Д., Жебит Т.С., Крылов А.Б., Пуховская С.Г., Иванова Ю.Б., Крук Н.Н., 2022</copyright-statement><copyright-year>2022</copyright-year><copyright-holder xml:lang="ru">Мельник А.Д., Жебит Т.С., Крылов А.Б., Пуховская С.Г., Иванова Ю.Б., Крук Н.Н.</copyright-holder><copyright-holder xml:lang="en">Melnik A.D., Zhebit T.S., Krylov A.B., Pukhovskaya S.G., Ivanova Y.B., Kruk M.M.</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/999">https://zhps.ejournal.by/jour/article/view/999</self-uri><abstract><p>Обнаружено формирование J-агрегатов 21-тиа-5,10,15,20-тетра-(4-cульфофенил)-порфирина в подкисленных водных растворах и измерены их спектрально-люминесцентные характеристики. Показано, что спектрально-люминесцентные характеристики J-агрегатов определяются экситонными взаимодействиями. Определено количество когерентно взаимодействующих мономерных молекул порфирина в агрегате. Установлено, что J-агрегаты гетеропорфирина флуоресцируют с квантовым выходом флуоресценции Ффл = 1.8 × 10–4. Обнаружена фотолабильность J-агрегатов: при фотовозбуждении J-агрегатов в полосу поглощения при 503 нм они разрушаются до мономерных дважды протонированных молекул. Процесс фотомономеризации является обратимым, при хранении раствора в темноте вновь стабилизируются J-агрегаты.</p></abstract><trans-abstract xml:lang="en"><p>The formation of J-aggregates of 21-thia-5,10,15,20-tetra-(4-sulfonatophenyl)-porphyrin in acidified water solutions is herein revealed for the first time and their spectral-luminescent properties are measured. It is shown that the spectral-luminescent properties of J-aggregates are due to the excitonic interactions, and the number of coherent interacting monomeric porphyrin molecules in the aggregate is evaluated. It is found that J-aggregates of heteroporphyrin have fluorescence, and the fluorescence quantum yield Фfl is found to be as low as 1.8 × 10–4. The photolability of J-aggregates is found, namely, upon J-aggregate photoexcitation to the absorption band at 503 nm they collapse to the monomeric doubly protonated molecules. The process of photomonomerisation is reversible: upon keeping the solution in the dark, J-aggregates form again.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>гетеропорфирины</kwd><kwd>протонирование</kwd><kwd>J-агрегаты</kwd><kwd>спектр поглощения</kwd><kwd>флуоресценция</kwd></kwd-group><kwd-group xml:lang="en"><kwd>heteroporphyrins</kwd><kwd>protonation</kwd><kwd>J-aggregates</kwd><kwd>absorption spectra</kwd><kwd>fluorescence</kwd></kwd-group><funding-group><funding-statement xml:lang="ru">Работа выполнена при финансовой поддержке государственной программы научных исследований Республики Беларусь “Конвергенция 2025” (подпрограмма “Междисциплинарные исследования и новые зарождающиеся технологии”, задание 3.03.10 (НИР 2)).</funding-statement></funding-group></article-meta></front><back><ref-list><title>References</title><ref id="cit1"><label>1</label><citation-alternatives><mixed-citation xml:lang="ru">M. Luciano, C. Brueckner. 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