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Au nanorod decoration on NaYF₄:Yb/Tm nanoparticles for enhanced emission and wavelength-dependent biomolecular sensing.

Identifieur interne : 000526 ( Main/Exploration ); précédent : 000525; suivant : 000527

Au 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 Kim

Source :

ACS applied materials & interfaces [ 1944-8252 ] ; 2013.

RBID : pubmed:23591121

Descripteurs français

KwdFr :
- Acide urique (analyse), Analyse spectrale, Dendrimères (), Fluorures (), Limite de détection, Microscopie électronique à balayage, Nanoparticules métalliques (), Nanotubes (), Or (), Spectrométrie de fluorescence, Techniques de biocapteur (instrumentation), Thulium (), Ytterbium (), Yttrium ().
MESH :
- analyse : Acide urique.
- Analyse spectrale, Dendrimères, Fluorures, Limite de détection, Microscopie électronique à balayage, Nanoparticules métalliques, Nanotubes, Or, Spectrométrie de fluorescence, Techniques de biocapteur, Thulium, Ytterbium, Yttrium.

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

Affiliations:

Le document en format XML

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<author><name sortKey="Huang, Ling" sort="Huang, Ling" uniqKey="Huang L" first="Ling" last="Huang">Ling Huang</name>
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<author><name sortKey="Sun, Handong" sort="Sun, Handong" uniqKey="Sun H" first="Handong" last="Sun">Handong Sun</name>
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<term>Analyse spectrale</term>
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<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 (instrumentation)</term>
<term>Thulium ()</term>
<term>Ytterbium ()</term>
<term>Yttrium ()</term>
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<term>Spectrometry, Fluorescence</term>
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<term>Fluorures</term>
<term>Limite de détection</term>
<term>Microscopie électronique à balayage</term>
<term>Nanoparticules métalliques</term>
<term>Nanotubes</term>
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<term>Techniques de biocapteur</term>
<term>Thulium</term>
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<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>
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<name sortKey="Kim, Dong Hwan" sort="Kim, Dong Hwan" uniqKey="Kim D" first="Dong-Hwan" last="Kim">Dong-Hwan Kim</name>
<name sortKey="Sun, Handong" sort="Sun, Handong" uniqKey="Sun H" first="Handong" last="Sun">Handong Sun</name>
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Au nanorod decoration on NaYF₄:Yb/Tm nanoparticles for enhanced emission and wavelength-dependent biomolecular sensing.

Au nanorod decoration on NaYF₄:Yb/Tm nanoparticles for enhanced emission and wavelength-dependent biomolecular sensing.

Source :

Descripteurs français

English descriptors

Abstract

Links toward previous steps (curation, corpus...)

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