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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-41</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>СЕЛЕКТИВНЫЙ СЕНСОР ГИГАНТСКОГО КОМБИНАЦИОННОГО РАССЕЯНИЯ ДЛЯ ДВУХВАЛЕНТНОГО ИОНА РТУТИ, ОСНОВАННЫЙ НА ИСПОЛЬЗОВАНИИ ПОРИСТОГО ПОЛИМЕРНОГО МАТЕРИАЛА И ОПОСРЕДОВАННОГО МИШЕНЬЮ СМЕЩЕНИЯ T-БОГАТОЙ ЦЕПИ</article-title><trans-title-group xml:lang="en"><trans-title>A SELECTIVE SURFACE-ENHANCED RAMAN SCATTERING SENSOR FOR MERCURY(II) BASED ON A POROUS POLYMER MATERIAL AND THE TARGET-MEDIATED DISPLACEMENT OF A T-RICH STRAND</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>Kang</surname><given-names>Y. .</given-names></name><name name-style="western" xml:lang="en"><surname>Kang</surname><given-names>Y. .</given-names></name></name-alternatives><email xlink:type="simple">130 Meilong Road. Shanghai 200237. China</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>Zhang</surname><given-names>L. .</given-names></name><name name-style="western" xml:lang="en"><surname>Zhang</surname><given-names>L. .</given-names></name></name-alternatives><email xlink:type="simple">130 Meilong Road. Shanghai 200237. China</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>Zhang</surname><given-names>H. .</given-names></name><name name-style="western" xml:lang="en"><surname>Zhang</surname><given-names>H. .</given-names></name></name-alternatives><email xlink:type="simple">130 Meilong Road. Shanghai 200237. China</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>Wu</surname><given-names>T. .</given-names></name><name name-style="western" xml:lang="en"><surname>Wu</surname><given-names>T. .</given-names></name></name-alternatives><email xlink:type="simple">130 Meilong Road. Shanghai 200237. China</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>Du</surname><given-names>Y. .</given-names></name><name name-style="western" xml:lang="en"><surname>Du</surname><given-names>Y. .</given-names></name></name-alternatives><email xlink:type="simple">yipingdu@ecust.edu.cn</email><xref ref-type="aff" rid="aff-1"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>Восточно-Китайский университет</institution></aff><aff xml:lang="en"><institution>School of Chemistry and Molecular Engineering and Research Center of Analysis and Test, East China University of Science and Technology</institution></aff></aff-alternatives><pub-date pub-type="collection"><year>2017</year></pub-date><pub-date pub-type="epub"><day>10</day><month>03</month><year>2020</year></pub-date><volume>84</volume><issue>2</issue><fpage>201</fpage><lpage>207</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Kang Y..., Zhang L..., Zhang H..., Wu T..., Du Y..., 2020</copyright-statement><copyright-year>2020</copyright-year><copyright-holder xml:lang="ru">Kang Y..., Zhang L..., Zhang H..., Wu T..., Du Y...</copyright-holder><copyright-holder xml:lang="en">Kang Y..., Zhang L..., Zhang H..., Wu T..., Du Y...</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/41">https://zhps.ejournal.by/jour/article/view/41</self-uri><abstract><p>На основе использования опосредованного мишенью смещения Т-богатой олигонуклеотидной цепи создан чувствительный и селективный сенсор гигантского комбинационного рассеяния (ГКР) для двухвалентного иона ртути. Приготовлен дуплекс ДНК/аптамер путем гибридизации тетраметилродамин(TMR)-меченого тимин(T)-обогащенного Hg2+ -специального аптамера (TMR-аптамера) и ДНК с тиолированным аденином. Дуплекс может быть иммобилизирован на сенсорной подложке из наночастиц Ag, модифицированных глицидилметакрилатэтилен диметокрилатом (Ag-GMA-EDMA) путем самоассамблирования на TMR-аптамере. В этом случае метка TMR фрагмента приближается к поверхности подложки, вследствие чего вероятность сильного сигнала ГКР значительно возрастает. При добавлении мишени пара TMR-аптамеров может совместно взаимодействовать с Hg2+ , вследствие чего образуется стабильная дуплексоподобная структура, опосредованная комплексом Т-Hg2+ -Т между двумя смежными ветвями, которая вызывает высвобождение TMR-аптамеров с поверхности подложки и, следовательно, значительное уменьшение сигнала ГКР. Данный оптический сенсор проявляет чувствительность к ионам Hg2+ в области их концентраций от 5 нM до 2.0 мкM при пределе обнаружения 2.5 нM. Разработанный сенсор практически нечувствителен к ионам других металлов, он может легко восстанавливаться, что обусловливает перспективы его применения для анализа реальных образцов. </p></abstract><trans-abstract xml:lang="en"><p>A sensitive and selective surface-enhanced Raman scattering (SERS) sensor for mercury(II) was fabricated based on the target-mediated displacement of a T-rich oligonucleotide strand. A DNA/aptamer duplex was prepared by the hybridization between a tetramethylrhodamine(TMR)-labeled thymine(T)-rich Hg2+ -specific aptamer (denoted as TMR-aptamer) and a thiolated adenine-rich capturing DNA. The duplex can be immobilized onto the SERS substrate of the Ag-moiety modified glycidyl methacrylate-ethylene dimethacrylate (denoted as Ag-GMA-EDMA) via self-assembly by the thiol anchor, in which the TMR-aptamer exists in a double-stranded chain. In this case, the label of the TMR moiety approaches the substrate surface and produces a strong SERS signal. Upon the addition of the target, a pair of TMR-aptamers could cooperatively coordinate with Hg2+ to form a stable duplex-like structure mediated by the T-Hg2+ -T complex between two adjacent strands, which triggers the release of the TMR-aptamer from the SERS substrate surface, thus drawing the TMR tags away from the substrate with a significant decrease in the SERS signal. This optical sensor shows a sensitive response to Hg2+ in a concentration from 5 nM to 2.0 mM with a detection limit of 2.5 nM. The prepared sensor is negligibly responsive to other metal ions, can be easily regenerated and shows good performance in real sample analysis. </p></trans-abstract><kwd-group xml:lang="ru"><kwd>ион ртути</kwd><kwd>гигантское комбинационное рассеяние</kwd><kwd>аптамер</kwd><kwd>T-Hg2+-T</kwd><kwd>глицидилметакрилатэтилен диметакрилат</kwd><kwd>mercury ion</kwd><kwd>surface-enhanced Raman scattering</kwd><kwd>aptamer</kwd><kwd>T-Hg2+-T</kwd><kwd>glycidyl methacrylate-ethylene dimethacrylate material</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">T. W. Clarkson, L. Magos, G. J. Myers, N. Engl. J. Med., 349, 1731-1737 (2003).</mixed-citation><mixed-citation xml:lang="en">T. W. Clarkson, L. Magos, G. J. Myers, N. Engl. J. 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