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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-2016</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>МОЛЕКУЛЯРНАЯ СПЕКТРОСКОПИЯ</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="en"><subject>MOLECULAR SPECTROSCOPY</subject></subj-group></article-categories><title-group><article-title>Фосфоресценция In(III)Сl-этиопорфирина-I при 298 К</article-title><trans-title-group xml:lang="en"><trans-title>Phosphores- cence of In(III)Cl-Etioporphyrin-I at 298 K</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>Першукевич</surname><given-names>П. П.</given-names></name><name name-style="western" xml:lang="en"><surname>Pershukevich</surname><given-names>P. P.</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">p.persh@ifanbel.bas-net.by</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>Арабей</surname><given-names>С. М.</given-names></name><name name-style="western" xml:lang="en"><surname>Arabei</surname><given-names>S. M.</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-2"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Бельков</surname><given-names>М. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Belkov</surname><given-names>M. V.</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>Рычихина</surname><given-names>Е. Д.</given-names></name><name name-style="western" xml:lang="en"><surname>Rychikhina</surname><given-names>E. D.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Иваново</p></bio><bio xml:lang="en"><p>Ivanovo</p></bio><xref ref-type="aff" rid="aff-3"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Стужин</surname><given-names>П. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Stuzhin</surname><given-names>P. A.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Иваново</p></bio><bio xml:lang="en"><p>Ivanovo</p></bio><xref ref-type="aff" rid="aff-3"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>Институт физики НАН Беларуси</institution></aff><aff xml:lang="en"><institution>B. I. Stepanov Institute of Physics of the National Academy of Sciences of Belarus</institution></aff></aff-alternatives><aff-alternatives id="aff-2"><aff xml:lang="ru"><institution>Белорусский государственный аграрный технический университет</institution></aff><aff xml:lang="en"><institution>Belarusian State Agrarian Technical University</institution></aff></aff-alternatives><aff-alternatives id="aff-3"><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><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>724</fpage><lpage>731</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Першукевич П.П., Арабей С.М., Бельков М.В., Рычихина Е.Д., Стужин П.А., 2025</copyright-statement><copyright-year>2025</copyright-year><copyright-holder xml:lang="ru">Першукевич П.П., Арабей С.М., Бельков М.В., Рычихина Е.Д., Стужин П.А.</copyright-holder><copyright-holder xml:lang="en">Pershukevich P.P., Arabei S.M., Belkov M.V., Rychikhina E.D., Stuzhin P.A.</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/2016">https://zhps.ejournal.by/jour/article/view/2016</self-uri><abstract><p>При комнатной температуре и атмосферных условиях зарегистрирована фосфоресценция In(III)Сl-этиопорфирина-I в тонких пленках поливинилбутираля. Стробоскопическим методом получена серия спектров фосфоресценции, на основании которых определена длительность свечения при 298 К τфос ≈ 42 мкс. Уменьшение τфос почти на два порядка при изменении температуры от 77 до 298 К подтверждает тушащее действие атмосферного кислорода в газопроницаемой полимерной матрице. При увеличении плотности мощности возбуждения в ∼300 раз квантовый выход фосфоресценции при 298 К увеличивается в ∼30 раз и достигает ϕфос ≈ 0.74 %.</p></abstract><trans-abstract xml:lang="en"><p>Phosphorescence of In(III)Cl-etioporphyrin-I in thin films of polyvinylbutyral was recorded at room temperature and atmospheric conditions. A series of phosphorescence spectra was obtained using the stroboscopic method, on the basis of which the glow duration τР ≈ 42 μs at 298 K was determined. A decrease in τР by almost two orders of magnitude with a change in temperature from 77 to 298 K confirms the quenching effect of atmospheric oxygen in the gas-permeable polymer matrix. With an increase in the excitation power density by ∼300 times, the quantum yield of phosphorescence at 298 K increases by ∼30 times, reaching a value of ϕР ≈ 0.74%.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>индиевый комплекс этиопорфирина-I</kwd><kwd>спектр люминесценции</kwd><kwd>длительность и квантовый выход фосфоресценции</kwd><kwd>тушение фосфоресценции кислородом</kwd></kwd-group><kwd-group xml:lang="en"><kwd>indium complex of etioporphyrin-I</kwd><kwd>luminescence spectrum</kwd><kwd>duration and quantum yield of phosphorescence</kwd><kwd>quenching of phosphorescence by oxygen</kwd></kwd-group><funding-group><funding-statement xml:lang="ru">Работа выполнена при частичной финансовой поддержке ГПНИ Республики Беларусь “Фотоника и электроника для инноваций”, подпрограммы “Фотоника и ее применение”, задание 1.5</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">В. 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