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<record><TEI><teiHeader><fileDesc><titleStmt><title xml:lang="en">Composition Tuning the Upconversion Emission in NaYF<sub>4</sub>:Yb/Tm Hexaplate Nanocrystals</title><author><name sortKey="Zhang, Hua" sort="Zhang, Hua" uniqKey="Zhang H" first="Hua" last="Zhang">Hua Zhang</name><affiliation><nlm:aff id="A1">Department of Materials Science and Engineering, University of California, Los Angeles, CA 90095, U. S. A</nlm:aff></affiliation></author><author><name sortKey="Li, Yujing" sort="Li, Yujing" uniqKey="Li Y" first="Yujing" last="Li">Yujing Li</name><affiliation><nlm:aff id="A1">Department of Materials Science and Engineering, University of California, Los Angeles, CA 90095, U. S. A</nlm:aff></affiliation></author><author><name sortKey="Lin, Yungchen" sort="Lin, Yungchen" uniqKey="Lin Y" first="Yungchen" last="Lin">Yungchen Lin</name><affiliation><nlm:aff id="A1">Department of Materials Science and Engineering, University of California, Los Angeles, CA 90095, U. S. A</nlm:aff></affiliation></author><author><name sortKey="Huang, Yu" sort="Huang, Yu" uniqKey="Huang Y" first="Yu" last="Huang">Yu Huang</name><affiliation><nlm:aff id="A1">Department of Materials Science and Engineering, University of California, Los Angeles, CA 90095, U. S. A</nlm:aff></affiliation><affiliation><nlm:aff id="A3">California Nanosystems Institute, University of California, Los Angeles, CA 90095, U. S. A</nlm:aff></affiliation></author><author><name sortKey="Duan, Xiangfeng" sort="Duan, Xiangfeng" uniqKey="Duan X" first="Xiangfeng" last="Duan">Xiangfeng Duan</name><affiliation><nlm:aff id="A2">Department of Chemistry and Biochemistry, University of California, Los Angeles, CA 90095, U. S. A</nlm:aff></affiliation><affiliation><nlm:aff id="A3">California Nanosystems Institute, University of California, Los Angeles, CA 90095, U. S. A</nlm:aff></affiliation></author></titleStmt><publicationStmt><idno type="wicri:source">PMC</idno><idno type="pmid">21264435</idno><idno type="pmc">3236245</idno><idno type="url">http://www.ncbi.nlm.nih.gov/pmc/articles/PMC3236245</idno><idno type="RBID">PMC:3236245</idno><idno type="doi">10.1039/c0nr00823k</idno><date when="2011">2011</date><idno type="wicri:Area/Pmc/Corpus">000246</idno><idno type="wicri:explorRef" wicri:stream="Pmc" wicri:step="Corpus" wicri:corpus="PMC">000246</idno></publicationStmt><sourceDesc><biblStruct><analytic><title xml:lang="en" level="a" type="main">Composition Tuning the Upconversion Emission in NaYF<sub>4</sub>:Yb/Tm Hexaplate Nanocrystals</title><author><name sortKey="Zhang, Hua" sort="Zhang, Hua" uniqKey="Zhang H" first="Hua" last="Zhang">Hua Zhang</name><affiliation><nlm:aff id="A1">Department of Materials Science and Engineering, University of California, Los Angeles, CA 90095, U. S. A</nlm:aff></affiliation></author><author><name sortKey="Li, Yujing" sort="Li, Yujing" uniqKey="Li Y" first="Yujing" last="Li">Yujing Li</name><affiliation><nlm:aff id="A1">Department of Materials Science and Engineering, University of California, Los Angeles, CA 90095, U. S. A</nlm:aff></affiliation></author><author><name sortKey="Lin, Yungchen" sort="Lin, Yungchen" uniqKey="Lin Y" first="Yungchen" last="Lin">Yungchen Lin</name><affiliation><nlm:aff id="A1">Department of Materials Science and Engineering, University of California, Los Angeles, CA 90095, U. S. A</nlm:aff></affiliation></author><author><name sortKey="Huang, Yu" sort="Huang, Yu" uniqKey="Huang Y" first="Yu" last="Huang">Yu Huang</name><affiliation><nlm:aff id="A1">Department of Materials Science and Engineering, University of California, Los Angeles, CA 90095, U. S. A</nlm:aff></affiliation><affiliation><nlm:aff id="A3">California Nanosystems Institute, University of California, Los Angeles, CA 90095, U. S. A</nlm:aff></affiliation></author><author><name sortKey="Duan, Xiangfeng" sort="Duan, Xiangfeng" uniqKey="Duan X" first="Xiangfeng" last="Duan">Xiangfeng Duan</name><affiliation><nlm:aff id="A2">Department of Chemistry and Biochemistry, University of California, Los Angeles, CA 90095, U. S. A</nlm:aff></affiliation><affiliation><nlm:aff id="A3">California Nanosystems Institute, University of California, Los Angeles, CA 90095, U. S. A</nlm:aff></affiliation></author></analytic><series><title level="j">Nanoscale</title><idno type="ISSN">2040-3364</idno><idno type="eISSN">2040-3372</idno><imprint><date when="2011">2011</date></imprint></series></biblStruct></sourceDesc></fileDesc><profileDesc><textClass></textClass></profileDesc></teiHeader><front><div type="abstract" xml:lang="en"><p id="P1">Single crystal hexagonal NaYF<sub>4</sub>:Yb/Tm nanocrytstals have been synthesized with uniform size, morphology and controlled chemical composition. Spectroscopic studies show that these nanocrystals exhibit strong energy upconversion emission when excited with a 980 nm diode laser, with two primary emission peaks centered around 452 nm and 476 nm. Importantly, the overall and relative emission intensity at these wavelengths can be readily tuned by controlling the concentration of the trivalent rare earth element dopants at the beginning of the synthesis which has been confirmed by EDX for the first time. Through systematic studies, the optimum rare earth ion doping concentration can be determined for the strongest emission intensity at the selected peak(s). Confocal microscope studies show that the upconversion emission from individual NCs can be readily visualized. These studies demonstrate a rational approach for fine tuning the upconversion properties in rare-earth doped nanostructures, and can broadly impact areas ranging from energy harvesting, energy conversion to biomedical imaging and therapeutics.</p></div></front></TEI><pmc article-type="research-article" xml:lang="en"><pmc-comment>The publisher of this article does not allow downloading of the full text in XML form.</pmc-comment>
<pmc-dir>properties manuscript</pmc-dir>
<front><journal-meta><journal-id journal-id-type="nlm-journal-id">101525249</journal-id><journal-id journal-id-type="pubmed-jr-id">37848</journal-id><journal-id journal-id-type="nlm-ta">Nanoscale</journal-id><journal-title-group><journal-title>Nanoscale</journal-title></journal-title-group><issn pub-type="ppub">2040-3364</issn><issn pub-type="epub">2040-3372</issn></journal-meta><article-meta><article-id pub-id-type="pmid">21264435</article-id><article-id pub-id-type="pmc">3236245</article-id><article-id pub-id-type="doi">10.1039/c0nr00823k</article-id><article-id pub-id-type="manuscript">NIHMS335689</article-id><article-categories><subj-group subj-group-type="heading"><subject>Article</subject></subj-group></article-categories><title-group><article-title>Composition Tuning the Upconversion Emission in NaYF<sub>4</sub>:Yb/Tm Hexaplate Nanocrystals</article-title></title-group><contrib-group><contrib contrib-type="author"><name><surname>Zhang</surname><given-names>Hua</given-names></name><xref ref-type="aff" rid="A1">a</xref></contrib><contrib contrib-type="author"><name><surname>Li</surname><given-names>Yujing</given-names></name><xref ref-type="aff" rid="A1">a</xref></contrib><contrib contrib-type="author"><name><surname>Lin</surname><given-names>Yungchen</given-names></name><xref ref-type="aff" rid="A1">a</xref></contrib><contrib contrib-type="author" corresp="yes"><name><surname>Huang</surname><given-names>Yu</given-names></name><email>yhuang@seas.ucla.edu</email><xref ref-type="aff" rid="A1">a</xref><xref ref-type="aff" rid="A3">c</xref></contrib><contrib contrib-type="author" corresp="yes"><name><surname>Duan</surname><given-names>Xiangfeng</given-names></name><email>xduan@chem.ucla.edu</email><xref ref-type="aff" rid="A2">b</xref><xref ref-type="aff" rid="A3">c</xref></contrib></contrib-group><aff id="A1">Department of Materials Science and Engineering, University of California, Los Angeles, CA 90095, U. S. A</aff><aff id="A2"><label>b</label>Department of Chemistry and Biochemistry, University of California, Los Angeles, CA 90095, U. S. A</aff><aff id="A3"><label>c</label>California Nanosystems Institute, University of California, Los Angeles, CA 90095, U. S. A</aff><pub-date pub-type="nihms-submitted"><day>1</day><month>11</month><year>2011</year></pub-date><pub-date pub-type="epub"><day>25</day><month>1</month><year>2011</year></pub-date><pub-date pub-type="ppub"><month>3</month><year>2011</year></pub-date><pub-date pub-type="pmc-release"><day>1</day><month>3</month><year>2012</year></pub-date><volume>3</volume><issue>3</issue><fpage>963</fpage><lpage>966</lpage><permissions><copyright-statement>© The Royal Society of Chemistry [2010]</copyright-statement><copyright-year>2010</copyright-year></permissions><abstract><p id="P1">Single crystal hexagonal NaYF<sub>4</sub>:Yb/Tm nanocrytstals have been synthesized with uniform size, morphology and controlled chemical composition. Spectroscopic studies show that these nanocrystals exhibit strong energy upconversion emission when excited with a 980 nm diode laser, with two primary emission peaks centered around 452 nm and 476 nm. Importantly, the overall and relative emission intensity at these wavelengths can be readily tuned by controlling the concentration of the trivalent rare earth element dopants at the beginning of the synthesis which has been confirmed by EDX for the first time. Through systematic studies, the optimum rare earth ion doping concentration can be determined for the strongest emission intensity at the selected peak(s). Confocal microscope studies show that the upconversion emission from individual NCs can be readily visualized. These studies demonstrate a rational approach for fine tuning the upconversion properties in rare-earth doped nanostructures, and can broadly impact areas ranging from energy harvesting, energy conversion to biomedical imaging and therapeutics.</p></abstract><funding-group><award-group><funding-source country="United States">Office of the Director : NIH</funding-source><award-id>DP2 OD004342-01 || OD</award-id></award-group></funding-group></article-meta></front></pmc></record>Pour manipuler ce document sous Unix (Dilib)
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