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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-1618</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>Структурные и фотолюминесцентные свойства жидкокристаллических соединений р-(п-гептил)бензойной кислоты с дисперсными наночастицами ZnO</article-title><trans-title-group xml:lang="en"><trans-title>Structural and Photoluminescence Studies of p-(n-Heptyl) Benzoic Acid Liquid Crystals Dispersed with ZnO Nanoparticles</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>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-1"/></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. C.</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">raomc72@gmail.com</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>Madhav</surname><given-names>B. T. P.</given-names></name><name name-style="western" xml:lang="en"><surname>Madhav</surname><given-names>B. T. P.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Гунтур</p></bio><bio xml:lang="en"><p>Department of ECE</p><p>Guntur</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>Pardhasaradhi</surname><given-names>P.</given-names></name><name name-style="western" xml:lang="en"><surname>Pardhasaradhi</surname><given-names>P.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Гунтур</p></bio><bio xml:lang="en"><p>Department of ECE</p><p>Guntur</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>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>Department of Physics</p><p>Vishakhapatnam</p></bio><email xlink:type="simple">prof.mrnrao@andhrauniversity.edu.in</email><xref ref-type="aff" rid="aff-4"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>Колледж Марис Стелла</institution></aff><aff xml:lang="en"><institution>Maris Stella College</institution></aff></aff-alternatives><aff-alternatives id="aff-2"><aff xml:lang="ru"><institution>Колледж Андхра Лойола</institution></aff><aff xml:lang="en"><institution>Andhra Loyola College</institution></aff></aff-alternatives><aff-alternatives id="aff-3"><aff xml:lang="ru"><institution>LCRC-R&amp;D, Образовательный фонд Конеру Лакшмайя</institution></aff><aff xml:lang="en"><institution>LCRC-R&amp;D, Koneru Lakshmaiah Education Foundation</institution></aff></aff-alternatives><aff-alternatives id="aff-4"><aff xml:lang="ru"><institution>Университет Андхра</institution></aff><aff xml:lang="en"><institution>Andhra University</institution></aff></aff-alternatives><pub-date pub-type="collection"><year>2024</year></pub-date><pub-date pub-type="epub"><day>02</day><month>08</month><year>2024</year></pub-date><volume>91</volume><issue>4</issue><fpage>605</fpage><lpage>605</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Jayaprada P., Rao M.C., Madhav B., Pardhasaradhi P., Manepalli R., 2024</copyright-statement><copyright-year>2024</copyright-year><copyright-holder xml:lang="ru">Jayaprada P., Rao M.C., Madhav B., Pardhasaradhi P., Manepalli R.</copyright-holder><copyright-holder xml:lang="en">Jayaprada P., Rao M.C., Madhav B., Pardhasaradhi P., Manepalli R.</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/1618">https://zhps.ejournal.by/jour/article/view/1618</self-uri><abstract><p>Исследованы структурные и фотолюминесцентные свойства синтезированных жидкокристаллических (ЖК) соединений п-(н-гептил)бензойной кислоты с гомогенной дисперсией наночастиц (НЧ) ZnO в концентрациях 1–2.5 мас.%. Образцы охарактеризованы с помощью рентгеновской дифракции (XRD), сканирующей электронной микроскопии (SEM), УФ-видимой спектроскопии (UV-Vis), дифференциальной сканирующей калориметрии (DSC), поляризационной оптической микроскопии, ИК-Фурье-спектроскопии (FT-IR) и фотолюминесцентной спектроскопии (PL). Наблюдаемые дифракционные пики хорошо разрешены, что указывает на присутствие НЧ ZnO, размер частиц 60 нм. SEM-исследования выявили равномерную дисперсию и наличие НЧ ZnO в ЖК-образцах. На основе DSC-анализа оценены температуры фазовых превращений и соответствующие значения энтальпии. Спектры FT-IR дают информацию о различных функциональных группах, присутствующих в образцах. В спектрах PL максимум при 663 нм обусловлен наличием точечных дефектов внутри запрещенных вакансий и междоузлий, известных как эмиссия глубоких уровней.</p></abstract><trans-abstract xml:lang="en"><p>Synthesis, structural and photoluminescence studies of p-(n-heptyl) benzoic acid (7ba) liquid crystalline (LC) compound with the homogeneous dispersion of ZnO nanoparticles (NPs) in different weight concentrations (i.e., 1–2.5 wt.%) were undertaken. The synthesized samples were subsequently characterized by different characterization techniques such as X-ray diffraction (XRD), scanning electron microscopy (SEM), UV-visible (UV-Vis) spectroscopy, differential scanning calorimetry (DSC), optical polarising microscopy (POM), Fourier transform infrared spectroscopy (FT-IR), and photoluminescence (PL) spectroscopy. From the XRD studies, the diffraction peaks observed were well resolved indicating the presence of ZnO NPs. The particle size was found to be 60 nm. SEM studies revealed the uniform dispersion and the presence of ZnO NPs in the LC samples. From the DSC analysis, the temperatures at which the phase changes take place and the corresponding enthalpy values were estimated. FTIR spectra gave information about the various functional groups present in the samples. PL studies showed the peak at 663 nm due to the presence of point defects within the bandgap-like vacancies and interstitials known as deep-level emission.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>бензойная кислота</kwd><kwd>наночастицы ZnO</kwd><kwd>рентгеновская дифракция</kwd><kwd>сканирующая электронная микроскопия</kwd><kwd>УФ-видимая спектроскопия</kwd><kwd>оптическая поляризационная микроскопия</kwd><kwd>дифференциальная сканирующая калориметрия</kwd><kwd>ИК-Фурье-спектроскопия</kwd><kwd>фотолюминесценция</kwd></kwd-group><kwd-group xml:lang="en"><kwd>benzoic acid</kwd><kwd>ZnO nanoparticles</kwd><kwd>X-ray diffraction</kwd><kwd>scanning electron microscopy</kwd><kwd>UV-Visible spectroscopy</kwd><kwd>optical polarising microscopy</kwd><kwd>differential scanning calorimetry</kwd><kwd>Fourier transform infrared spectroscopy</kwd><kwd>photoluminescence</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">H. 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