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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">10.47612/0514-7506-2023-90-1-48-55</article-id><article-id custom-type="elpub" pub-id-type="custom">zhps-1214</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>Статьи</subject></subj-group></article-categories><title-group><article-title>Оптимизация структурных и оптических параметров плазмонных пленок серебра для флуоресцентного анализа конъюгата IgG-FITC</article-title><trans-title-group xml:lang="en"><trans-title>Optimization of Structural and Optical Parameters of Plasmon Silver Films for IgG-FITC Fluorescent Analysis</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>Кулакович</surname><given-names>О. С.</given-names></name><name name-style="western" xml:lang="en"><surname>Kulakovich</surname><given-names>O. S.</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.kulakovich@ifanbel.bas-net.by</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>Щербович</surname><given-names>А. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Shcherbovich</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-2"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Романенко</surname><given-names>А. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Ramanenka</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>Коктыш</surname><given-names>И. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Koktysh</surname><given-names>I. V.</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-2"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Мельникова</surname><given-names>Я. И.</given-names></name><name name-style="western" xml:lang="en"><surname>Melnikova</surname><given-names>Ya. I.</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-2"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Гапоненко</surname><given-names>С. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Gaponenko</surname><given-names>S. V.</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>Маскевич</surname><given-names>С. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Maskevich</surname><given-names>S. 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-2"/></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><aff-alternatives id="aff-2"><aff xml:lang="ru"><institution>Международный государственный экологический институт имени А. Д. Сахарова&#13;
Белорусского государственного университета</institution></aff><aff xml:lang="en"><institution>International Sakharov Environmental Institute of Belarusian State University</institution></aff></aff-alternatives><pub-date pub-type="collection"><year>2023</year></pub-date><pub-date pub-type="epub"><day>01</day><month>02</month><year>2023</year></pub-date><volume>90</volume><issue>1</issue><fpage>48</fpage><lpage>55</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Кулакович О.С., Щербович А.А., Романенко А.А., Коктыш И.В., Мельникова Я.И., Гапоненко С.В., Маскевич С.А., 2023</copyright-statement><copyright-year>2023</copyright-year><copyright-holder xml:lang="ru">Кулакович О.С., Щербович А.А., Романенко А.А., Коктыш И.В., Мельникова Я.И., Гапоненко С.В., Маскевич С.А.</copyright-holder><copyright-holder xml:lang="en">Kulakovich O.S., Shcherbovich A.A., Ramanenka A.A., Koktysh I.V., Melnikova Y.I., Gaponenko S.V., Maskevich S.A.</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/1214">https://zhps.ejournal.by/jour/article/view/1214</self-uri><abstract><p>Проведена оптимизация коэффициента усиления флуоресценции конъюгата иммуноглобулина G, меченного изотиоцианатом флуоресцеина (IgG-FITC), как иммунофлуоресцентного маркера в зависимости от оптических и топографических параметров пленки коллоидного серебра на поверхности стандартного полистирольного планшета для иммуноанализа. Выявлены факторы, влияющие на усиление флуоресценции. С помощью спектроскопии с временным разрешением, анализа спектров возбуждения флуоресценции, а также иммуноферментного определения относительных концентраций IgG-FITC, адсорбированного на твердой фазе, показано, что усиление флуоресценции является плазмон-резонансным процессом. Наиболее важным параметром, коррелирующим с коэффициентом усиления флуоресценции, является оптическая плотность пленки коллоидного серебра на длине волны возбуждения и испускания IgG-FITC. Максимальный коэффициент усиления в 10.2 раза получен для пленок серебра с наибольшей оптической плотностью. </p></abstract><trans-abstract xml:lang="en"><p>Optimization of the fluorescence enhancement factor of the conjugate of immunoglobulin G labeled with fluorescein isothiocyanate (IgG-FITC) as an immunofluorescent marker was carried out depending on the optical and topographic parameters of a colloidal silver film on the surface of a standard polystyrene plate for immunoassay. Factors influencing fluorescence enhancement were identified. Using time-resolved spectroscopy, analysis of fluorescence excitation spectra, and enzyme immunoassay determination of the relative concentrations of IgG-FITC adsorbed on the solid phase, it was shown that fluorescence enhancement is a plasmon-resonance process. The most important parameter correlated with the fluorescence enhancement factor is the optical density of silver colloidal film at the excitation and emission wavelengths of IgG-FITC. The maximum enhancement factor of 10.2 times was obtained for silver films with the highest optical density. </p></trans-abstract><kwd-group xml:lang="ru"><kwd>плазмон-усиленная флуоресценция</kwd><kwd>наночастица серебра</kwd><kwd>полиэлектролит</kwd><kwd>иммунофлуоресцентный анализ</kwd><kwd>иммуноглобулин G</kwd><kwd>меченный изотиоцианатом флуоресцеина</kwd></kwd-group><kwd-group xml:lang="en"><kwd>plasmon-enhanced fluorescence</kwd><kwd>silver nanoparticle</kwd><kwd>polyelectrolyte</kwd><kwd>immunofluorescence analysis</kwd><kwd>immunoglobulin G labeled with fluorescein isothiocyanate</kwd></kwd-group><funding-group><funding-statement xml:lang="ru">Международный экологический институт имени Сахарова БГУ благодарит за финансовую поддержку Республиканский фонд фундаментальных исследований (проект № Ф22ТУРЦ-007). Авторы признательны П. В. Карпач, И. Ф. Свекло за помощь в получении АСМ-изображений и С. Н. 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