Au nanorod decoration on NaYF₄:Yb/Tm nanoparticles for enhanced emission and wavelength-dependent biomolecular sensing.
Identifieur interne : 000668 ( Ncbi/Curation ); précédent : 000667; suivant : 000669Au nanorod decoration on NaYF₄:Yb/Tm nanoparticles for enhanced emission and wavelength-dependent biomolecular sensing.
Auteurs : Palanisamy Kannan ; Ferhan Abdul Rahim ; Rui Chen ; Xue Teng ; Ling Huang ; Handong Sun ; Dong-Hwan KimSource :
- ACS applied materials & interfaces [ 1944-8252 ] ; 2013.
Descripteurs français
- KwdFr :
- MESH :
English descriptors
- KwdEn :
- Biosensing Techniques (instrumentation), Dendrimers (chemistry), Fluorides (chemistry), Gold (chemistry), Limit of Detection, Metal Nanoparticles (chemistry), Microscopy, Electron, Scanning, Nanotubes (chemistry), Spectrometry, Fluorescence, Spectrum Analysis, Thulium (chemistry), Uric Acid (analysis), Ytterbium (chemistry), Yttrium (chemistry).
- MESH :
- chemical , analysis : Uric Acid.
- chemical , chemistry : Dendrimers, Fluorides, Gold, Thulium, Ytterbium, Yttrium.
- chemistry : Metal Nanoparticles, Nanotubes.
- instrumentation : Biosensing Techniques.
- Limit of Detection, Microscopy, Electron, Scanning, Spectrometry, Fluorescence, Spectrum Analysis.
Abstract
We introduce gold nanorods (GNRs) decoration on NaYF4:Yb/Tm upconversion nanocrystals (UCNCs) by functionalizing the UCNCs with polyamidoamine generation 1 (PAMAM G1) dendrimer, followed by a single-step seed-mediated growth of long-range GNRs to enhance "biological window" upconversion emission. The up-conversion emission of GNR-decorated UCNCs can be enhanced beyond the level typically obtainable using shell-like structures up to 27-fold enhancement. Also, the enhancement can be tuned at different wavelength regions by varying the GNR aspect ratio. The GNR-decorated UCNC is further modified with 2-thiouracil for nonenzymatic detection of uric acid, revealing a detection limit as 1 pM.
DOI: 10.1021/am4007758
PubMed: 23591121
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pubmed:23591121Le document en format XML
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<author><name sortKey="Chen, Rui" sort="Chen, Rui" uniqKey="Chen R" first="Rui" last="Chen">Rui Chen</name>
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<author><name sortKey="Teng, Xue" sort="Teng, Xue" uniqKey="Teng X" first="Xue" last="Teng">Xue Teng</name>
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<term>Fluorides (chemistry)</term>
<term>Gold (chemistry)</term>
<term>Limit of Detection</term>
<term>Metal Nanoparticles (chemistry)</term>
<term>Microscopy, Electron, Scanning</term>
<term>Nanotubes (chemistry)</term>
<term>Spectrometry, Fluorescence</term>
<term>Spectrum Analysis</term>
<term>Thulium (chemistry)</term>
<term>Uric Acid (analysis)</term>
<term>Ytterbium (chemistry)</term>
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<term>Analyse spectrale</term>
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<term>Limite de détection</term>
<term>Microscopie électronique à balayage</term>
<term>Nanoparticules métalliques ()</term>
<term>Nanotubes ()</term>
<term>Or ()</term>
<term>Spectrométrie de fluorescence</term>
<term>Techniques de biocapteur (instrumentation)</term>
<term>Thulium ()</term>
<term>Ytterbium ()</term>
<term>Yttrium ()</term>
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<term>Ytterbium</term>
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<term>Microscopy, Electron, Scanning</term>
<term>Spectrometry, Fluorescence</term>
<term>Spectrum Analysis</term>
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<term>Dendrimères</term>
<term>Fluorures</term>
<term>Limite de détection</term>
<term>Microscopie électronique à balayage</term>
<term>Nanoparticules métalliques</term>
<term>Nanotubes</term>
<term>Or</term>
<term>Spectrométrie de fluorescence</term>
<term>Techniques de biocapteur</term>
<term>Thulium</term>
<term>Ytterbium</term>
<term>Yttrium</term>
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<front><div type="abstract" xml:lang="en">We introduce gold nanorods (GNRs) decoration on NaYF4:Yb/Tm upconversion nanocrystals (UCNCs) by functionalizing the UCNCs with polyamidoamine generation 1 (PAMAM G1) dendrimer, followed by a single-step seed-mediated growth of long-range GNRs to enhance "biological window" upconversion emission. The up-conversion emission of GNR-decorated UCNCs can be enhanced beyond the level typically obtainable using shell-like structures up to 27-fold enhancement. Also, the enhancement can be tuned at different wavelength regions by varying the GNR aspect ratio. The GNR-decorated UCNC is further modified with 2-thiouracil for nonenzymatic detection of uric acid, revealing a detection limit as 1 pM.</div>
</front>
</TEI>
</record>
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