ThuliumV1, PubMed, Corpus, bibRecord, 000526

Local-field effect on the fluorescence relaxation of Tm3+:LaF3 nanocrystals immersed in liquid medium.

Identifieur interne : 000526 ( PubMed/Corpus ); précédent : 000525; suivant : 000527

Local-field effect on the fluorescence relaxation of Tm3+:LaF3 nanocrystals immersed in liquid medium.

Auteurs : Enjie He ; Hairong Zheng ; Xisheng Zhang ; Shixian Qu

Source :

Luminescence : the journal of biological and chemical luminescence [ 1522-7243 ]

RBID : pubmed:19630086

English descriptors

KwdEn :
- Benzene (chemistry), Carbon Disulfide (chemistry), Ethanol (chemistry), Fluorescence, Fluorides (chemistry), Glycerol (chemistry), Lanthanum (chemistry), Luminescent Measurements, Nanostructures (chemistry), Particle Size, Surface Properties, Thulium (chemistry), Water (chemistry).
MESH :
- chemical , chemistry : Benzene, Carbon Disulfide, Ethanol, Fluorides, Glycerol, Lanthanum, Thulium, Water.
- chemistry : Nanostructures.
- Fluorescence, Luminescent Measurements, Particle Size, Surface Properties.

Abstract

Tm(3+):LaF(3) nanocrystals were synthesized with hydrothermal technique. Local-field effect on the radiative relaxation rate was studied in the system of Tm(3+):LaF(3) nanocrystals immersed in several liquid media. The fluorescence lifetime was measured. It was found that the fluorescence decay presented the characteristics of second-order exponential decay, for which the contribution from the ions inside the nanocrystal and ions at the interface of the nanocrystal were distinguished. Investigating the experimental results with proposed models, we found that the surface effect had to be eliminated. For rare earth doped LaF(3) nanocrystals, real-cavity model well explains the influence of surrounding medium on the fluorescence relaxation rate.

DOI: 10.1002/bio.1146
PubMed: 19630086

Links to Exploration step

pubmed:19630086

Le document en format XML

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<author><name sortKey="He, Enjie" sort="He, Enjie" uniqKey="He E" first="Enjie" last="He">Enjie He</name>
<affiliation><nlm:affiliation>College of Physics and Information Technology, Shaanxi Normal University, Xi'an, People's Republic of China.</nlm:affiliation>
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<author><name sortKey="Zheng, Hairong" sort="Zheng, Hairong" uniqKey="Zheng H" first="Hairong" last="Zheng">Hairong Zheng</name>
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<author><name sortKey="Zhang, Xisheng" sort="Zhang, Xisheng" uniqKey="Zhang X" first="Xisheng" last="Zhang">Xisheng Zhang</name>
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<author><name sortKey="Qu, Shixian" sort="Qu, Shixian" uniqKey="Qu S" first="Shixian" last="Qu">Shixian Qu</name>
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<affiliation><nlm:affiliation>College of Physics and Information Technology, Shaanxi Normal University, Xi'an, People's Republic of China.</nlm:affiliation>
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<author><name sortKey="Zheng, Hairong" sort="Zheng, Hairong" uniqKey="Zheng H" first="Hairong" last="Zheng">Hairong Zheng</name>
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<author><name sortKey="Zhang, Xisheng" sort="Zhang, Xisheng" uniqKey="Zhang X" first="Xisheng" last="Zhang">Xisheng Zhang</name>
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<term>Carbon Disulfide (chemistry)</term>
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<term>Fluorescence</term>
<term>Fluorides (chemistry)</term>
<term>Glycerol (chemistry)</term>
<term>Lanthanum (chemistry)</term>
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<term>Particle Size</term>
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<term>Carbon Disulfide</term>
<term>Ethanol</term>
<term>Fluorides</term>
<term>Glycerol</term>
<term>Lanthanum</term>
<term>Thulium</term>
<term>Water</term>
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<keywords scheme="MESH" qualifier="chemistry" xml:lang="en"><term>Nanostructures</term>
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<front><div type="abstract" xml:lang="en">Tm(3+):LaF(3) nanocrystals were synthesized with hydrothermal technique. Local-field effect on the radiative relaxation rate was studied in the system of Tm(3+):LaF(3) nanocrystals immersed in several liquid media. The fluorescence lifetime was measured. It was found that the fluorescence decay presented the characteristics of second-order exponential decay, for which the contribution from the ions inside the nanocrystal and ions at the interface of the nanocrystal were distinguished. Investigating the experimental results with proposed models, we found that the surface effect had to be eliminated. For rare earth doped LaF(3) nanocrystals, real-cavity model well explains the influence of surrounding medium on the fluorescence relaxation rate.</div>
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<Abstract><AbstractText>Tm(3+):LaF(3) nanocrystals were synthesized with hydrothermal technique. Local-field effect on the radiative relaxation rate was studied in the system of Tm(3+):LaF(3) nanocrystals immersed in several liquid media. The fluorescence lifetime was measured. It was found that the fluorescence decay presented the characteristics of second-order exponential decay, for which the contribution from the ions inside the nanocrystal and ions at the interface of the nanocrystal were distinguished. Investigating the experimental results with proposed models, we found that the surface effect had to be eliminated. For rare earth doped LaF(3) nanocrystals, real-cavity model well explains the influence of surrounding medium on the fluorescence relaxation rate.</AbstractText>
<CopyrightInformation>Copyright (c) 2009 John Wiley & Sons, Ltd.</CopyrightInformation>
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Local-field effect on the fluorescence relaxation of Tm3+:LaF3 nanocrystals immersed in liquid medium.

Local-field effect on the fluorescence relaxation of Tm3+:LaF3 nanocrystals immersed in liquid medium.

Source :

English descriptors

Abstract

Links to Exploration step

Le document en format XML

Pour manipuler ce document sous Unix (Dilib)

Pour mettre un lien sur cette page dans le réseau Wicri

Pour générer des pages wiki