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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">dan</journal-id><journal-title-group><journal-title xml:lang="ru">Доклады Национальной академии наук Беларуси</journal-title><trans-title-group xml:lang="en"><trans-title>Doklady of the National Academy of Sciences of Belarus</trans-title></trans-title-group></journal-title-group><issn pub-type="ppub">1561-8323</issn><issn pub-type="epub">2524-2431</issn><publisher><publisher-name>The Republican Unitary Enterprise Publishing House "Belaruskaya Navuka"</publisher-name></publisher></journal-meta><article-meta><article-id custom-type="elpub" pub-id-type="custom">dan-458</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>ФИЗИКА</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="en"><subject>PHYSICS</subject></subj-group></article-categories><title-group><article-title>АТРОПОИЗОМЕРИЯ 5,10,15,20-ТЕТРАКИС-(3-N-МЕТИЛПИРИДИЛ)-ПОРФИРИНА</article-title><trans-title-group xml:lang="en"><trans-title>ATROPOISOMERIZATION OF 5,10,15,20-TETRAKIS-(3-N-METHYLPYRIDYL)-PORPHYRIN</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>Люлькович</surname><given-names>Е. С.</given-names></name><name name-style="western" xml:lang="en"><surname>Liulkovich</surname><given-names>L. S.</given-names></name></name-alternatives><bio xml:lang="ru"><p>студент</p><p>ул. Свердлова, 13a, 220006</p></bio><bio xml:lang="en"><p>student</p><p>13a, Sverdlov Str., 220006</p></bio><email xlink:type="simple">lisa.lulkovich@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>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>д-р хим. наук, профессор</p><p>пр-т Ф. Энгельса, 7, 153000</p></bio><bio xml:lang="en"><p>D. Sc. (Chemistry), Professor</p><p>7, F. Engels Ave., 153000</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>канд. хим. наук, вед. науч. сотрудник</p><p>ул. Акаде­ мическая, 1, 153045</p></bio><bio xml:lang="en"><p>Ph. D. (Chemistry), Leading researcher</p><p>1, Akademicheskaya Str., 153045</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>Семейкин</surname><given-names>А. С.</given-names></name><name name-style="western" xml:lang="en"><surname>Semeikin</surname><given-names>A. S.</given-names></name></name-alternatives><bio xml:lang="ru"><p>д-р хим. наук, гл. науч. сотрудник, профессор</p><p>пр-т Ф. Энгельса, 7, 153000</p></bio><bio xml:lang="en"><p>D. Sc. (Chemistry), Chief researcher, Professor</p><p>7, F. Engels Ave., 153000</p></bio><email xlink:type="simple">semeikin@isuct.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>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>д-р физ.-мат. наук, заве­ дующий кафедрой, доцент</p><p>ул. Свердлова, 13a, 220006</p></bio><bio xml:lang="en"><p>D. Sc. (Physics and Mathematics), Head of the Department, Assistant professor</p><p>13a, Sverdlov Str., 220006</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, Минск</institution></aff><aff xml:lang="en"><institution>Belarusian State Technological University, Minsk</institution></aff></aff-alternatives><aff-alternatives id="aff-2"><aff xml:lang="ru"><institution>Ивановский государственный химико-технологический университет, Иваново</institution></aff><aff xml:lang="en"><institution>Ivanovo State University of Chemistry and Technology, Ivanovo</institution></aff></aff-alternatives><aff-alternatives id="aff-3"><aff xml:lang="ru"><institution>Институт химии растворов имени Г. А. Крестова Российской академии наук, Иваново</institution></aff><aff xml:lang="en"><institution>G. A. Krestov Institute of Solution Chemistry of Russian Academy of Sciences, Ivanovo</institution></aff></aff-alternatives><pub-date pub-type="collection"><year>2017</year></pub-date><pub-date pub-type="epub"><day>17</day><month>12</month><year>2017</year></pub-date><volume>61</volume><issue>5</issue><fpage>56</fpage><lpage>65</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Люлькович Е.С., Пуховская С.Г., Иванова Ю.Б., Семейкин А.С., Крук Н.Н., 2017</copyright-statement><copyright-year>2017</copyright-year><copyright-holder xml:lang="ru">Люлькович Е.С., Пуховская С.Г., Иванова Ю.Б., Семейкин А.С., Крук Н.Н.</copyright-holder><copyright-holder xml:lang="en">Liulkovich L.S., Pukhovskaya S.G., Ivanova Y.B., Semeikin A.S., 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://doklady.belnauka.by/jour/article/view/458">https://doklady.belnauka.by/jour/article/view/458</self-uri><abstract><p>Исследованы спектральные характеристики 5,10,15,20-тетра-(3-N-метилпиридил)-порфирина в во- дном растворе и обнаружена временная эволюция спектров поглощения. Установлено, что причиной спектральной эволюции является гетерогенность раствора, обусловленная наличием нескольких атропоизомеров, различающихся положением пиридильных групп относительно средней плоскости тетрапиррольного макроцикла молекулы порфирина благодаря свободному вращению заместителей вокруг связи Сm–С1. Показано, что наблюдаемые спектральные превращения отражают перераспределение концентраций атропоизомеров в ходе установления равновесного распределения, которое завершается примерно через 300 ч после приготовления раствора при температуре 290 ± 2 К. Предложено, что явление атропоизомерии следует считать присущим всем 5,10,15,20-тетраарилпорфиринам с асимметричным относительно проходящей через связь Сm–С1 оси замещением арильных групп. Обсуждены возможности практического использования данного явления. </p></abstract><trans-abstract xml:lang="en"><p>The spectral properties of the 5,10,15,20-tetrakis-(3-N-methylpyridyl)-porphyrin were studied in the water solution and the temporal evolution of absorption spectra was revealed. The origin of the spectral changes was found to be due to the solution heterogeneity which is based on the coexistence of atropoisomers. These atropoisomers differ in their pyridyl groups, positioning relative to the mean plane of the tetrapyrrolic macrocycle due to an unrestricted rotation of substituents around the Сm–С1 bond. The observed spectral changes are shown to reflect the redistribution of the atropoisomer concentrations after establishing the equilibrium distribution that is over approximately within 300 hours after the preparation of a solution at a temperature of 290 ± 2 K. The atropoisomerization is suggested to be the inherent property of all 5,10,15,20-tetraarylporphyrins with an asymmetric substitution of aryl groups with respect to the axis passing through the Сm–С1 bond. The prospects for the practical applications of the revealed phenomenon are discussed. </p></trans-abstract><kwd-group xml:lang="ru"><kwd>порфирины</kwd><kwd>спектры поглощения</kwd><kwd>молекулярная структура</kwd><kwd>атропоизомерия</kwd><kwd>конформеры</kwd></kwd-group><kwd-group xml:lang="en"><kwd>porphyrins</kwd><kwd>absorption spectra</kwd><kwd>molecular structure</kwd><kwd>atropoisomerization</kwd><kwd>conformers</kwd></kwd-group><funding-group><funding-statement xml:lang="ru">Работа выполнена при финансовой поддержке Государственной программы научных исследований Республики Беларусь «Конвергенция 2020» (подпрограмма «Объединение», задание 3.3). Авторы благодарят за частичную финансовую поддержку Российский фонд фундаментальных исследований (проект № 16-53-00100 Бел_а) и Белорусский республиканский фонд фундаментальных исследований (проект Х16Р-097).</funding-statement><funding-statement xml:lang="en">The work has been carried out with the financial support from the State program of scientific research of the Republic of Belarus «Convergence-2020» (subprogram «Coherence», project 3.3). Authors thank Russian Foundation for the Fundamental Research (project no. 16-53-00100 Бел_а) and Belarusian Republican Foundation for the Fundamental Research (project Х16Р-097) for the partial financial support.</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">Steed, J. W. Supramolecular chemistry / J. W. Steed, J. L. Atwood. – Chichester: John Wiley &amp; Sons Ltd, 2000. – 480 p. doi.org/10.1002/9780470740880</mixed-citation><mixed-citation xml:lang="en">Steed J. W., Atwood J. L. Supramolecular chemistry. Chichester, John Wiley &amp; Sons Ltd, 2000. 480 p. doi. org/10.1002/9780470740880</mixed-citation></citation-alternatives></ref><ref id="cit2"><label>2</label><citation-alternatives><mixed-citation xml:lang="ru">Grabowski, Z. R. Structural changes accompanying intramolecular electron transfer: focus on Twisted Intramolecular Charge Transfer states and structures / Z. R. Grabowski, K. Rotkiewicz, W. Rettig // Chem. Rev. – 2003. – Vol. 103, N 10. – P. 3899–4032. doi.org/10.1021/cr940745l</mixed-citation><mixed-citation xml:lang="en">Grabowski Z. R., Rotkiewicz K., Rettig W. Structural changes accompanying intramolecular electron transfer: focus on Twisted Intramolecular Charge Transfer states and structures. Chemical Reviews, 2003. vol. 103, no. 10, pp. 3899–4032. doi.org/10.1021/cr940745l</mixed-citation></citation-alternatives></ref><ref id="cit3"><label>3</label><citation-alternatives><mixed-citation xml:lang="ru">Senge, M. O. The conformation flexibility of tetrapyrroles – current model studies and photobiological relevance / M. O. Senge // J. Photochem. Photobiol. B: Biol. – 1992. – Vol. 16, N 1. – P. 3–36. doi.org/10.1016/1011-1344(92)85150-s</mixed-citation><mixed-citation xml:lang="en">Senge M. O. The conformation flexibility of tetrapyrroles – current model studies and photobiological relevance. Journal of Photochemistry and Photobiology B: Biology, 1992, vol. 16, no. 1, pp. 3–36. doi.org/10.1016/1011-1344(92)85150-s</mixed-citation></citation-alternatives></ref><ref id="cit4"><label>4</label><citation-alternatives><mixed-citation xml:lang="ru">Nonplanar porphyrins and their significance in proteins / J. A. Shelnutt [et al.] // Chem. Soc. Rev. – 1998. – Vol. 27, N 1. – P. 31–41. doi.org/10.1039/a827031z</mixed-citation><mixed-citation xml:lang="en">Shelnutt J. A., Xing-Zhi Song, Jian-Guo Ma, Song-Ling Jia, Jentzen W., Medforth C. J., Medforth C. J. Nonplanar porphyrins and their significance in proteins. Chemical Society Reviews, 1998, vol. 27, no. 1, pp. 31–41. doi.org/10.1039/ a827031z</mixed-citation></citation-alternatives></ref><ref id="cit5"><label>5</label><citation-alternatives><mixed-citation xml:lang="ru">Quimby, D. J. Luminescence studies on several tetraarylporphyrins and their zinc derivatives / D. J. Quimby, F. R. Longo // J. Am. Chem. Soc. – 1975. – Vol. 97, N 18. – P. 5111–5117. doi.org/10.1021/ja00851a015</mixed-citation><mixed-citation xml:lang="en">Quimby D. J., Longo F. R. Luminescence studies on several tetraarylporphyrins and their zinc derivatives. Journal of the American Chemical Society, 1975, vol. 97, no. 18, pp. 5111–5117. doi.org/10.1021/ja00851a015</mixed-citation></citation-alternatives></ref><ref id="cit6"><label>6</label><citation-alternatives><mixed-citation xml:lang="ru">Meso-substituted cationic porphyrins of biological interest. Photophysical and physicochemical properties in solution and bound to liposomes / N. G. Angeli [et al.] // Photochem. and Photobiol. – 2000. – Vol. 72, N 1. – P. 49–56. doi.org/10.1562/0031- 8655(2000)0720049mscpob2.0.co2</mixed-citation><mixed-citation xml:lang="en">Angeli N. G., Lagorio M. G, San Roman E. A., Dicelio L. E. Meso-substituted cationic porphyrins of biological interest. Photophysical and physicochemical properties in solution and bound to liposomes. Photochemistry and Photobiology, 2000, vol. 72, no. 1, pp. 49–56. doi.org/10.1562/0031-8655(2000)0720049mscpob2.0.co2</mixed-citation></citation-alternatives></ref><ref id="cit7"><label>7</label><citation-alternatives><mixed-citation xml:lang="ru">Kalyanasundaram, K. Photoсhemistry of water-soluble porphyrins: comparative study of isomeric tetrapyridyl-tetrakis(Nmethylpyridiniumyl) porphyrins / K. Kalyanasundaram // Inorganic Chemistry. – 1984. – Vol. 23, N 16. – P. 2453–2459. doi. org/10.1021/ic00184a019</mixed-citation><mixed-citation xml:lang="en">Kalyanasundaram K. Photoсhemistry of water-soluble porphyrins: comparative study of isomeric tetrapyridyl- tetrakis(Nmethylpyridiniumyl) porphyrins. Inorganic Chemistry, 1984, vol. 23, no. 16, pp. 2453–2459. doi.org/10.1021/ic00184a019</mixed-citation></citation-alternatives></ref><ref id="cit8"><label>8</label><citation-alternatives><mixed-citation xml:lang="ru">Intramolecular interactions in the ground and excited states of tetrakis(N-methylpyridyl)porphyrins / F. J. Vergeldt [et al.] // J. Phys. Chem. – 1995. – Vol. 99, N 13. – P. 4397–4405. doi.org/10.1021/j100013a007</mixed-citation><mixed-citation xml:lang="en">Vergeldt F. J., Koehorst R. B. M., van Hoek A., Schaafsma T. J. Intramolecular interactions in the ground and excited states of tetrakis(N-methylpyridyl)porphyrins. The Journal of Physical Chemistry, 1995, vol. 99, no. 13, p. 4397–4405. doi. org/10.1021/j100013a007</mixed-citation></citation-alternatives></ref><ref id="cit9"><label>9</label><citation-alternatives><mixed-citation xml:lang="ru">Hambright, P. Synthesis and characterization of new isomeric water-soluble porphyrins. Tetra(2-N-methylpyridyl) porphine and Tetra(3-N-methylpyridyl)porphine / P. Hambright, T. Gore, M. Burton // Inorg. Chem. – 1976. – Vol. 15, N 9. – Р. 2314–2315. doi.org/10.1021/ic50163a072</mixed-citation><mixed-citation xml:lang="en">Hambright P., Gore T., Burton M. Synthesis and characterization of new isomeric water-soluble porphyrins. Tetra(2-Nmethylpyridyl)porphine and Tetra(3-N-methylpyridyl)porphine. Inorganic Chemistry, 1976, vol. 15, no. 9, pp. 2314–2315. doi. org/10.1021/ic50163a072</mixed-citation></citation-alternatives></ref><ref id="cit10"><label>10</label><citation-alternatives><mixed-citation xml:lang="ru">Крук, Н. Н. Спектральные свойства конформеров тетра-(3-N-метилпиридил)-порфирина в растворах / Н. Н. Крук, Е. С. Люлькович // Междунар. науч. конф. «Молекулярные, мембранные и клеточные основы функционирования биосистем», XII-й съезд Белорусского общественного объединения фотобиологов и биофизиков, 28–30 июня 2016 г., Минск: сб. науч. работ: в 2 ч. – Минск: БГУ, 2016. – Ч. 2. – С. 54–57.</mixed-citation><mixed-citation xml:lang="en">Kruk N. N., Liulkovich E. S. Spectral properties of tetra-(3-N-methylpyridyl)-porphyrin conformers in solutions. Trudy Mezhdunarodnoy nauchnoy konferentsii «Molekulyarnyie, membrannyie i kletochnyie osnovy funktsionirovaniya biosistem», XII s’ezd Belorusskogo obschestvennogo ob’edineniya fotobiologov i biofizikov. Ch. 2 [Proceedings of the International scientific conference «Molecular, membrane and cellular principles of functioning of biosystems», XIIth Congress of Belarusian public association of photobiologists and biophysicists. Part 1]. Minsk, Belarusian State University, 2016, pp. 54–57 (in Russian).</mixed-citation></citation-alternatives></ref><ref id="cit11"><label>11</label><citation-alternatives><mixed-citation xml:lang="ru">Aggregation of meso-substituted water-soluble porphyrins / R. F. Pasternack [et al.] // J. Am. Chem. Soc. − 1972. − Vol. 94, N 13. − P. 4511–4517. doi.org/10.1021/ja00768a016</mixed-citation><mixed-citation xml:lang="en">Pasternack R. F., Huber P. R., Boyd P., Engasser G., Francesconi L., Gibbs E., Fasella P., Cerio Venturo G., Hinds L. de C. Aggregation of meso-substituted water-soluble porphyrins. Journal of American Chemical Society, 1972, vol. 94, no. 13, pp. 4511–4517. doi.org/10.1021/ja00768a016</mixed-citation></citation-alternatives></ref><ref id="cit12"><label>12</label><citation-alternatives><mixed-citation xml:lang="ru">Atropisomers of zinc tetrakis(o-cyanophenyl)porphyrins. The crystal structure of the αβαβ-isomer and the atropisomerization rates / K. Hatano [et al.] // Bull. Chem. Soc. Jpn. – 1987. – Vol. 60, N 6. – P. 1985–1992. doi.org/10.1246/bcsj.60.1985</mixed-citation><mixed-citation xml:lang="en">Hatano K., Kawasaki K., Munakata S., Iitaka Y. Atropisomers of zinc tetrakis(o-cyanophenyl)porphyrins. The crystal structure of the αβαβ-isomer and the atropisomerization rates. Bulletin of the Chemical Society of Japan, 1987, vol. 60, no. 6, pp. 1985–1992. doi.org/10.1246/bcsj.60.1985</mixed-citation></citation-alternatives></ref><ref id="cit13"><label>13</label><citation-alternatives><mixed-citation xml:lang="ru">Photophysical and structural properties of saddle-shaped free base porphyrins: evidence for an «orthogonal» dipole moment / I. V. Sazanovich [et al.] // J. Phys. Chem. B. – 2001. – Vol. 105, N 32. – P. 7818–7829. doi.org/10.1021/jp010274o</mixed-citation><mixed-citation xml:lang="en">Sazanovich I. V., Galievsky V. A., van Hoek A., Schaafsma T. J., Malinovskii V. L., Holten D., Chirvony V. S. Photophysical and structural properties of saddle-shaped free base porphyrins: evidence for an «orthogonal» dipole moment. The Journal of Physical Chemistry B, 2001, vol. 105, no. 32, pp. 7818–7829. doi.org/10.1021/jp010274o</mixed-citation></citation-alternatives></ref><ref id="cit14"><label>14</label><citation-alternatives><mixed-citation xml:lang="ru">Atropisomers of 5,10,15,20-tetrakis(2,6-dichloro-3-sulfamoyl-phenyl)porphyrins / A. M. Ressurreicão [et al.] // J. of Porph. and Phthal. – 2007. – Vol. 11, N 1. – P. 50–57. doi.org/10.1142/s1088424607000072</mixed-citation><mixed-citation xml:lang="en">Ressurreicão, A.M., Pineiro M., Arnaut L.G., Rocha Gonsalves M. d’A. Atropisomers of 5,10,15,20-tetrakis(2,6dichloro-3-sulfamoyl-phenyl)porphyrins. Journal of Porphyrins and Phthalocyanines, 2007, vol. 11, no. 1, pp. 50–57. doi. org/10.1142/s1088424607000072</mixed-citation></citation-alternatives></ref><ref id="cit15"><label>15</label><citation-alternatives><mixed-citation xml:lang="ru">Bonnett, R. Chemical aspects of photodynamic therapy / R. Bonnett. – Amsterdam: Gordon and Breach Science Publishers, 2000. – 305 p.</mixed-citation><mixed-citation xml:lang="en">Bonnett R. Chemical aspects of photodynamic therapy. Amsterdam, Gordon and Breach Science Publishers, 2000. 305 p.</mixed-citation></citation-alternatives></ref></ref-list><fn-group><fn fn-type="conflict"><p>The authors declare that there are no conflicts of interest present.</p></fn></fn-group></back></article>
