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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-1942</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>АННОТАЦИИ АНГЛОЯЗЫЧНЫХ СТАТЕЙ</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="en"><subject>ABSTRACTS ENGLISH-LANGUAGE ARTICLES</subject></subj-group></article-categories><title-group><article-title>Влияние наночастиц, легированных диспрозием, на структурные, термические и оптические свойства жидкокристаллической p-(n-гептилокси)бензойной кислоты</article-title><trans-title-group xml:lang="en"><trans-title>Effect of Dysprosium-Doped Nanoparticles on Structural, Thermal, and Optical Properties of Liquid Crystalline p-(n-Heptyloxy) Benzoic 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>Trisanjya</surname><given-names>R.</given-names></name><name name-style="western" xml:lang="en"><surname>Trisanjya</surname><given-names>R.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Вишакхапатнам</p></bio><bio xml:lang="en"><p>LCNC Laboratory, Department of Physics.</p><p>Visakhapatnam</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>Mwakuna</surname><given-names>A. E.</given-names></name><name name-style="western" xml:lang="en"><surname>Mwakuna</surname><given-names>A. E.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Вишакхапатнам</p></bio><bio xml:lang="en"><p>Abely E. Mwakuna - LCNC Laboratory, Department of Physics.</p><p>Visakhapatnam</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>Kumar</surname><given-names>C. R.S.</given-names></name><name name-style="western" xml:lang="en"><surname>Ravi Shankar Kumar</surname><given-names>Ch.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Школа естественных наук.</p><p>Вишакхапатнам</p></bio><bio xml:lang="en"><p>Department of Physics, School of Science.</p><p>Visakhapatnam</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>Jayaprada</surname><given-names>P.</given-names></name><name name-style="western" xml:lang="en"><surname>Jayaprada</surname><given-names>P.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Виджаявада</p></bio><bio xml:lang="en"><p>Department of Physics.</p><p>Vijayawada</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>Rao</surname><given-names>M. C.</given-names></name><name name-style="western" xml:lang="en"><surname>Rao</surname><given-names>M. S.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Виджаявада</p></bio><bio xml:lang="en"><p>Department of Physics.</p><p>Vijayawada</p></bio><email xlink:type="simple">prof.mrnrao@andhrauniversity.edu.in</email><xref ref-type="aff" rid="aff-4"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Manepalli</surname><given-names>R. K.N.R.</given-names></name><name name-style="western" xml:lang="en"><surname>Manepalli</surname><given-names>R. K.N.R.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Вишакхапатнам</p></bio><bio xml:lang="en"><p>LCNC Laboratory, Department of Physics.</p><p>Visakhapatnam</p></bio><xref ref-type="aff" rid="aff-1"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>Университет Андхра</institution></aff><aff xml:lang="en"><institution>Andhra University</institution></aff></aff-alternatives><aff-alternatives id="aff-2"><aff xml:lang="ru"><institution>Университет GITAM</institution></aff><aff xml:lang="en"><institution>GITAM University</institution></aff></aff-alternatives><aff-alternatives id="aff-3"><aff xml:lang="ru"><institution>Институт инженерии и технологий Дханекула</institution></aff><aff xml:lang="en"><institution>Dhanekula Institute of Engineering and Technology</institution></aff></aff-alternatives><aff-alternatives id="aff-4"><aff xml:lang="ru"><institution>Колледж Андхра Лойола</institution></aff><aff xml:lang="en"><institution>Andhra Loyola College</institution></aff></aff-alternatives><pub-date pub-type="collection"><year>2025</year></pub-date><pub-date pub-type="epub"><day>07</day><month>09</month><year>2025</year></pub-date><volume>92</volume><issue>4</issue><fpage>565</fpage><lpage>565</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Trisanjya R., Mwakuna A.E., Kumar C.R., Jayaprada P., Rao M.C., Manepalli R.K., 2025</copyright-statement><copyright-year>2025</copyright-year><copyright-holder xml:lang="ru">Trisanjya R., Mwakuna A.E., Kumar C.R., Jayaprada P., Rao M.C., Manepalli R.K.</copyright-holder><copyright-holder xml:lang="en">Trisanjya R., Mwakuna A.E., Ravi Shankar Kumar C., Jayaprada P., Rao M.S., Manepalli R.K.</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/1942">https://zhps.ejournal.by/jour/article/view/1942</self-uri><abstract><p>Исследованы структурные, термические и оптические изменения в жидкокристаллической p-(n-гептилокси)бензойной кислоте (7-OBA), вызванные дисперсией наночастиц фосфата лития-цинка, легированного диспрозием [Li4Zn(PO4)2:Dy3+] (DLZP-NPs) методом термического сжигания. С помощью рентгеновской дифракции подтверждено включение DLZP-NPs в 7-OBA с сохранением присущей жидкокристаллической структуры. Исследования морфологии с использованием сканирующей электронной микроскопии выявили равномерную дисперсию наночастиц, в то время как энергодисперсионная рентгеновская спектроскопия подтвердила постоянное присутствие ионов Dy3+ по всей матрице. Методом ИК-Фурье-спектроскопии определены функциональные группы в нанокомпозитах с отчетливыми сдвигами в областях растяжения связей C=O, C=C и CH, что указывает на молекулярные взаимодействия между матрицей 7-OBA и наночастицами. Эти переходы предполагают реорганизацию молекулярной среды, чему способствовали синергические эффекты DLZP-NPs. Температурные и фазовые переходы в нанокомпозитах исследованы с помощью дифференциальной сканирующей калориметрии и поляризованной оптической микроскопии, которые выявили тонкие, но существенные изменения в температурах фазовых переходов и жидкокристаллических текстурах. Из спектров оптического поглощения определено уменьшение энергетической ширины запрещенной зоны 7-OBA с 3.97 до 3.64 эВ с увеличением концентрации наночастиц, что важно для настройки запрещенной зоны. Результаты спектроскопической эллипсометрии показали уменьшение оптической диэлектрической проницаемости с увеличением дисперсии наночастиц, что отражает изменения в электронной поляризуемости.</p></abstract><trans-abstract xml:lang="en"><p>This study probes into the structural, thermal, and optical transformations induced in liquid crystalline p-(n-heptyloxy) benzoic acid (7-OBA) by dispersion of dysprosium-doped lithium zinc phosphate nanoparticles [Li4Zn(PO4)2:Dy3+] (DLZP-NPs) via the thermal combustion method. X-ray diffraction confirmed the successful incorporation of DLZP-NPs, maintaining the inherent liquid crystalline structure of 7-OBA. Detailed morphological studies using scanning electron microscopy revealed a uniform dispersion of nanoparticles, while energy-dispersive X-ray spectroscopy verified the consistent presence of Dy3+ ions throughout the matrix. Fourier-transform infrared spectroscopy identified functional groups within the nanocomposites, with distinct shifts in the stretching regions of C=O, C=C, and C-H bonds, indicative of molecular interactions between the 7-OBA matrix and the nanoparticles. These shifts suggest a reorganization of the molecular environment, facilitated by the synergistic effects of DLZP-NPs. Thermal and phase transition behaviors of the nanocomposites were examined using differential scanning calorimetry and polarized optical microscopy, which highlighted subtle yet significant alterations in phase transition temperatures and liquid crystalline textures. Optical absorption studies revealed a reduction in the energy bandgap of 7-OBA from 3.97 to 3.64 eV with increasing nanoparticle concentrations, emphasizing the potential for bandgap tuning. Spectroscopic ellipsometry further demonstrated a decrease in optical permittivity with increased nanoparticle dispersion, reflecting modifications in electronic polarizability.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>жидкокристаллическая p-(n-гептилокси)бензойная кислота</kwd><kwd>диспрозий</kwd><kwd>рентгеновская дифракция</kwd><kwd>сканирующая электронная микроскопия</kwd><kwd>ИК-Фурье-спектроскопия</kwd><kwd>дифференциальная сканирующая калориметрия</kwd><kwd>поляризованная оптическая микроскопия</kwd></kwd-group><kwd-group xml:lang="en"><kwd>liquid crystalline p-(n-heptyloxy) benzoic acid</kwd><kwd>dysprosium</kwd><kwd>X-ray diffraction</kwd><kwd>scanning electron microscopy</kwd><kwd>Fourier-transform infrared spectroscopy</kwd><kwd>differential scanning calorimetry</kwd><kwd>polarized optical microscopy</kwd></kwd-group><funding-group><funding-statement xml:lang="en">The authors are grateful to the Advanced Analytical Laboratory, Andhra University and GITAM University, Visakhapatnam for providing characterization facilities.</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">H. 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