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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-1964</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>СПЕКТРОСКОПИЯ НАНОСТРУКТУР</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="en"><subject>SPECTROSCOPY OF NANOSTRUCTURE</subject></subj-group></article-categories><title-group><article-title>Исследование свойств обесцвечивания фотохромных нанокомпозитов на основе поливинилового спирта и вольфрамофосфорной кислоты</article-title><trans-title-group xml:lang="en"><trans-title>Investigation of the Bleaching Properties of Photochromic Nanocomposites Based on Poly(Vinyl Alcohol) and Tungstophosphoric Acid</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>Горбачев</surname><given-names>А. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Gorbachev</surname><given-names>A. A.</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>Третинников</surname><given-names>О. Н.</given-names></name><name name-style="western" xml:lang="en"><surname>Tretinnikov</surname><given-names>O. N.</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">o.tretinnikov@ifanbel.bas-net.by</email><xref ref-type="aff" rid="aff-1"/></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><pub-date pub-type="collection"><year>2025</year></pub-date><pub-date pub-type="epub"><day>26</day><month>09</month><year>2025</year></pub-date><volume>92</volume><issue>5</issue><fpage>588</fpage><lpage>592</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Горбачев А.А., Третинников О.Н., 2025</copyright-statement><copyright-year>2025</copyright-year><copyright-holder xml:lang="ru">Горбачев А.А., Третинников О.Н.</copyright-holder><copyright-holder xml:lang="en">Gorbachev A.A., Tretinnikov O.N.</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/1964">https://zhps.ejournal.by/jour/article/view/1964</self-uri><abstract><p>Показано, что обесцвечивание фотохромных нанокомпозитных пленок поливиниловый спирт–вольфрамофосфорная кислота (ПВС-ВФК) и пленок ПВС-ВФК, содержащих глицерин (ПВС-ВФКГЛ), окрашенных УФ-облучением, может быть существенно ускорено путем повышения концентрации ГЛ в пленках и относительной влажности окружающей среды. Полученные результаты способствуют разрешению проблем нанокомпозитов ПВС-ВФК, связанных с их медленным обесцвечиванием, и тем самым делают их потенциально применимыми в качестве новых функциональных материалов для бесчернильной и стираемой печати, защиты от подделки, сенсоров, умных окон.</p></abstract><trans-abstract xml:lang="en"><p>We have shown that the discoloration of photochromic poly(vinyl alcohol)–tungstophosphoric acid  (PVA-TPA) nanocomposite films and PVA-TPA films containing glycerol (PVA-TPA-GL) colored by UV irradiation can be greatly accelerated by increasing the concentration of GL in the films and the ambient relative humidity. This study resolves the issues of polymer-heteropolyacid nanocomposites associated with their slow bleaching and, thus, makes them potentially applicable as new functional materials for inkless and erasable printing, anti-counterfeiting, sensors, smart windows.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>фотохромные материалы</kwd><kwd>поливиниловый спирт</kwd><kwd>вольфрамофосфорная кислота</kwd><kwd>нанокомпозиты</kwd></kwd-group><kwd-group xml:lang="en"><kwd>photochromic materials</kwd><kwd>poly(vinyl alcohol)</kwd><kwd>tungstophosphoric acid</kwd><kwd>nanocomposites</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">W. Feng, T. R. Zhang, Y. Liu, R. Lu, Y. Y. Zhao, J. N. Yao. J. Mater. Sci. Lett., 21, N 6 (2002) 497—499</mixed-citation><mixed-citation xml:lang="en">W. Feng, T. R. Zhang, Y. Liu, R. Lu, Y. Y. Zhao, J. N. Yao. J. Mater. Sci. 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