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Colloidal LaF3:Yb,Er, LaF3:Yb,Ho and LaF3Yb,Tm nanocrystals with multicolor upconversion fluorescence

Identifieur interne : 001A01 ( Main/Exploration ); précédent : 001A00; suivant : 001A02

Colloidal LaF3:Yb,Er, LaF3:Yb,Ho and LaF3Yb,Tm nanocrystals with multicolor upconversion fluorescence

Auteurs : Guang-Shun Yi [Singapour] ; Gan-Moog Chow [Singapour]

Source :

Journal of material chemistry [ 0959-9428 ] ; 2005.

RBID : Pascal:06-0023506

Descripteurs français

Pascal (Inist)
- Erbium, Holmium, Nanocristal, Conversion fréquence, Fluorescence, Rayonnement IR, Addition holmium, Addition ytterbium, Addition thulium, Codopage, Ligand, Solution organique, Matériau transparent, Affichage, Lanthanide, 78.
Wicri :
- topic : Affichage.

English descriptors

KwdEn :
- Codoping, Display, Erbium, Fluorescence, Frequency conversion, Holmium, Holmium additions, Infrared radiation, Ligands, Nanocrystal, Organic solution, Rare earths, Thulium additions, Transparent material, Ytterbium additions.

Abstract

The IR-to-visible upconversion fluorescent nanocrystals, Yb-Er, Yb-Ho and Yb-Tm co-doped LaF₃ were chemically synthesized and investigated. The ligand-capped nanocrystals were easily dispersed in organic solutions and subsequently formed a transparent colloidal solution. Under 980 nm IR excitation, green, red and blue emission bands were observed from these colloidal solutions, respectively. Compared with the recently reported colloidal NaYF₄:Yb,Er nanocrystals, our nanocrystals produced a fluorescence output which was 5 times higher. These nanocrystals have potential applications as bio-probes and displays.

Affiliations:

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Le document en format XML

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:Yb,Er, LaF<sub>3</sub>
:Yb,Ho and LaF<sub>3</sub>
Yb,Tm nanocrystals with multicolor upconversion fluorescence</title>
<author><name sortKey="Yi, Guang Shun" sort="Yi, Guang Shun" uniqKey="Yi G" first="Guang-Shun" last="Yi">Guang-Shun Yi</name>
<affiliation wicri:level="4"><inist:fA14 i1="01"><s1>Molecular Engineering of Biological and Chemical Systems, Singapore-Massachusetts Institute of Technology, National University of Singapore</s1>
<s2>Singapore 119260</s2>
<s3>SGP</s3>
<sZ>1 aut.</sZ>
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<country>Singapour</country>
<orgName type="university">Université nationale de Singapour</orgName>
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<author><name sortKey="Chow, Gan Moog" sort="Chow, Gan Moog" uniqKey="Chow G" first="Gan-Moog" last="Chow">Gan-Moog Chow</name>
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<s2>Singapore 119260</s2>
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<country>Singapour</country>
<orgName type="university">Université nationale de Singapour</orgName>
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<affiliation wicri:level="4"><inist:fA14 i1="02"><s1>Department of Materials Science & Engineering, National University of Singapore</s1>
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<sourceDesc><biblStruct><analytic><title xml:lang="en" level="a">Colloidal LaF<sub>3</sub>
:Yb,Er, LaF<sub>3</sub>
:Yb,Ho and LaF<sub>3</sub>
Yb,Tm nanocrystals with multicolor upconversion fluorescence</title>
<author><name sortKey="Yi, Guang Shun" sort="Yi, Guang Shun" uniqKey="Yi G" first="Guang-Shun" last="Yi">Guang-Shun Yi</name>
<affiliation wicri:level="4"><inist:fA14 i1="01"><s1>Molecular Engineering of Biological and Chemical Systems, Singapore-Massachusetts Institute of Technology, National University of Singapore</s1>
<s2>Singapore 119260</s2>
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<author><name sortKey="Chow, Gan Moog" sort="Chow, Gan Moog" uniqKey="Chow G" first="Gan-Moog" last="Chow">Gan-Moog Chow</name>
<affiliation wicri:level="4"><inist:fA14 i1="01"><s1>Molecular Engineering of Biological and Chemical Systems, Singapore-Massachusetts Institute of Technology, National University of Singapore</s1>
<s2>Singapore 119260</s2>
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<country>Singapour</country>
<orgName type="university">Université nationale de Singapour</orgName>
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<series><title level="j" type="main">Journal of material chemistry</title>
<title level="j" type="abbreviated">J. mater. chem.</title>
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<imprint><date when="2005">2005</date>
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<seriesStmt><title level="j" type="main">Journal of material chemistry</title>
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<profileDesc><textClass><keywords scheme="KwdEn" xml:lang="en"><term>Codoping</term>
<term>Display</term>
<term>Erbium</term>
<term>Fluorescence</term>
<term>Frequency conversion</term>
<term>Holmium</term>
<term>Holmium additions</term>
<term>Infrared radiation</term>
<term>Ligands</term>
<term>Nanocrystal</term>
<term>Organic solution</term>
<term>Rare earths</term>
<term>Thulium additions</term>
<term>Transparent material</term>
<term>Ytterbium additions</term>
</keywords>
<keywords scheme="Pascal" xml:lang="fr"><term>Erbium</term>
<term>Holmium</term>
<term>Nanocristal</term>
<term>Conversion fréquence</term>
<term>Fluorescence</term>
<term>Rayonnement IR</term>
<term>Addition holmium</term>
<term>Addition ytterbium</term>
<term>Addition thulium</term>
<term>Codopage</term>
<term>Ligand</term>
<term>Solution organique</term>
<term>Matériau transparent</term>
<term>Affichage</term>
<term>Lanthanide</term>
<term>78</term>
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<keywords scheme="Wicri" type="topic" xml:lang="fr"><term>Affichage</term>
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<front><div type="abstract" xml:lang="en">The IR-to-visible upconversion fluorescent nanocrystals, Yb-Er, Yb-Ho and Yb-Tm co-doped LaF<sub>3</sub>
 were chemically synthesized and investigated. The ligand-capped nanocrystals were easily dispersed in organic solutions and subsequently formed a transparent colloidal solution. Under 980 nm IR excitation, green, red and blue emission bands were observed from these colloidal solutions, respectively. Compared with the recently reported colloidal NaYF<sub>4</sub>
:Yb,Er nanocrystals, our nanocrystals produced a fluorescence output which was 5 times higher. These nanocrystals have potential applications as bio-probes and displays.</div>
</front>
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<affiliations><list><country><li>Singapour</li>
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<orgName><li>Université nationale de Singapour</li>
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<tree><country name="Singapour"><noRegion><name sortKey="Yi, Guang Shun" sort="Yi, Guang Shun" uniqKey="Yi G" first="Guang-Shun" last="Yi">Guang-Shun Yi</name>
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<name sortKey="Chow, Gan Moog" sort="Chow, Gan Moog" uniqKey="Chow G" first="Gan-Moog" last="Chow">Gan-Moog Chow</name>
<name sortKey="Chow, Gan Moog" sort="Chow, Gan Moog" uniqKey="Chow G" first="Gan-Moog" last="Chow">Gan-Moog Chow</name>
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Colloidal LaF3:Yb,Er, LaF3:Yb,Ho and LaF3Yb,Tm nanocrystals with multicolor upconversion fluorescence

Colloidal LaF3:Yb,Er, LaF3:Yb,Ho and LaF3Yb,Tm nanocrystals with multicolor upconversion fluorescence

Source :

Descripteurs français

English descriptors

Abstract

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

Le document en format XML

Pour manipuler ce document sous Unix (Dilib)

Pour mettre un lien sur cette page dans le réseau Wicri