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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">10.47612/0514-7506-2023-90-2-230-238</article-id><article-id custom-type="elpub" pub-id-type="custom">zhps-1269</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>Влияние введения атома хлора в ароматический фрагмент 1,3-дикетонного лиганда на эффективность люминесценции новых координационных соединений иона Eu3+</article-title><trans-title-group xml:lang="en"><trans-title>Effect of the Chlorine Atom Adding to 1,3-Diketone Ligand Aromatic Fragment on the Luminescence Efficiency of Novel Eu3+ Ion Coordination Compounds</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>Цориева</surname><given-names>А. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Tsorieva</surname><given-names>A. V.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Москва</p></bio><bio xml:lang="en"><p>Moscow</p></bio><email xlink:type="simple">tsorievaav@gmail.com</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>Поликовский</surname><given-names>Т. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Polikovskiy</surname><given-names>T. A.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Москва</p></bio><bio xml:lang="en"><p>Moscow</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>Метлин</surname><given-names>М. Т.</given-names></name><name name-style="western" xml:lang="en"><surname>Metlin</surname><given-names>M. T.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Москва</p></bio><bio xml:lang="en"><p>Moscow</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>Коршунов</surname><given-names>В. М.</given-names></name><name name-style="western" xml:lang="en"><surname>Korshunov</surname><given-names>V. M.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Москва</p></bio><bio xml:lang="en"><p>Moscow</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>Тайдаков</surname><given-names>И. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Taydakov</surname><given-names>I. V.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Москва</p></bio><bio xml:lang="en"><p>Moscow</p></bio><xref ref-type="aff" rid="aff-1"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>Физический институт им. П. Н. Лебедева РАН</institution></aff><aff xml:lang="en"><institution>Physical Institute of the Russian Academy of Sciences</institution></aff></aff-alternatives><pub-date pub-type="collection"><year>2023</year></pub-date><pub-date pub-type="epub"><day>24</day><month>03</month><year>2023</year></pub-date><volume>90</volume><issue>2</issue><fpage>230</fpage><lpage>238</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Цориева А.В., Поликовский Т.А., Метлин М.Т., Коршунов В.М., Тайдаков И.В., 2023</copyright-statement><copyright-year>2023</copyright-year><copyright-holder xml:lang="ru">Цориева А.В., Поликовский Т.А., Метлин М.Т., Коршунов В.М., Тайдаков И.В.</copyright-holder><copyright-holder xml:lang="en">Tsorieva A.V., Polikovskiy T.A., Metlin M.T., Korshunov V.M., Taydakov I.V.</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/1269">https://zhps.ejournal.by/jour/article/view/1269</self-uri><abstract><p>Изучено влияние тяжелого атома хлора, введенного в ароматический фрагмент 1,3-дикетонного лиганда в составе координационных соединений иона Eu3+, на спектрально-люминесцентные свойства комплексных соединений. Данные, полученные из спектров поглощения, оптического возбуждения, флуоресценции и фосфоресценции, а также из кинетических зависимостей интенсивности люминесценции, позволяют оценить эффективность внутримолекулярного переноса энергии. Показано, что замещение водорода хлором повышает энергию первого возбужденного синглетного уровня лигандного окружения от 24500 до 26000 см–1, при этом не влияет на энергию триплетного уровня. Установлено, что введение хлора приводит к уменьшению константы безызлучательной релаксации от 1290 до 840 с–1 и, как следствие, к трехкратному увеличению квантового выхода люминесценции от 23 до 64 %. Разработан новый подход в рациональном конструировании координационных соединений ионов Eu3+ c лигандами из класса 1,3-дикетонов, заключающийся в замещении водорода тяжелым атомом хлора в ароматическом фрагменте лиганда.</p></abstract><trans-abstract xml:lang="en"><p>We studied the effect of a heavy chlorine atom added to the aromatic fragment of a 1,3-diketone ligand in Eu3+ ion coordination compounds on the spectral and luminescent properties of complex compounds. The data obtained from the absorption, optical excitation, fluorescence and phosphorescence spectra, as well as from the kinetic dependences of the luminescence intensity, allows us to estimate the efficiency of energy transfer processes within the studied compounds. It was found that adding a heavy chlorine atom leads to an increase in the energy of the first excited singlet state from 24500 to 26000 cm–1 and does not affect the energy of the triplet level of the ligand. Also, adding chlorine leads to a decrease in the nonradiative relaxation constant (from 1290 to 840 s–1), and consequently increases the luminescence quantum yield up to three times from 23 to 64%. Thereby, a new approach in the rational construction of coordination compounds of Eu3+ ions with 1,3-diketones class ligands has been developed, consisting in substitution of hydrogen with heavy chlorine atom in the aromatic fragment of ligand.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>координационное соединение</kwd><kwd>1</kwd><kwd>3-дикетонный лиганд</kwd><kwd>люминесценция</kwd><kwd>квантовый выход</kwd></kwd-group><kwd-group xml:lang="en"><kwd>coordination compound</kwd><kwd>1</kwd><kwd>3-diketones ligand</kwd><kwd>luminescence</kwd><kwd>quantum yield.</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">D. A. Kordeyro-Magrino, V. M. Korshunov, K. A. Lyssenko, V. E. 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