Concentrating and recycling energy in lanthanide codopants for efficient and spectrally pure emission: the case of NaYF4:Er3+/Tm3+ upconverting nanocrystals.
Identifieur interne : 000753 ( Main/Curation ); précédent : 000752; suivant : 000754Concentrating and recycling energy in lanthanide codopants for efficient and spectrally pure emission: the case of NaYF4:Er3+/Tm3+ upconverting nanocrystals.
Auteurs : Emory M. Chan [États-Unis] ; Daniel J. Gargas ; P James Schuck ; Delia J. MillironSource :
- The journal of physical chemistry. B [ 1520-5207 ] ; 2012.
Descripteurs français
- KwdFr :
- MESH :
English descriptors
- KwdEn :
- MESH :
- chemical , chemistry : Erbium, Fluorides, Lanthanoid Series Elements, Thulium, Yttrium.
- chemistry : Nanoparticles.
- Algorithms, Energy Transfer.
Abstract
In lanthanide-doped materials, energy transfer (ET) between codopant ions can populate or depopulate excited states, giving rise to spectrally pure luminescence that is valuable for the multicolor imaging and simultaneous tracking of multiple biological species. Here, we use the case study of NaYF(4) nanocrystals codoped with Er(3+) and Tm(3+) to theoretically investigate the ET mechanisms that selectively enhance and suppress visible upconversion luminescence under near-infrared excitation. Using an experimentally validated population balance model and using a path-tracing algorithm to objectively identify transitions with the most significant contributions, we isolated a network of six pathways that combine to divert energy away from the green-emitting manifolds and concentrate it in the Tm(3+):(3)F(4) manifold, which then participates in energy transfer upconversion (ETU) to populate the red-emitting Er(3+):(4)F(9/2) manifold. We conclude that the strength of this ETU process is a function of the strong coupling of the Tm(3+):(3)F(4) manifold and its ground state, the near-optimum band alignment of Er(3+) and Tm(3+) manifolds, and the concentration of population in Tm(3+):(3)F(4). These factors, along with the ability to recycle energy not utilized for red emission, also contribute to the enhanced quantum yield of NaYF(4):Er(3+)/Tm(3+). We generalize a scheme for applying these energy concentration and recycling pathways to other combinations of lanthanide dopants. Ultimately, these ET pathways and others elucidated by our theoretical modeling will enable the programming of physical properties in lanthanide-doped materials for a variety of applications that demand strong and precisely defined optical transitions.
DOI: 10.1021/jp302401j
PubMed: 22551408
Links toward previous steps (curation, corpus...)
- to stream PubMed, to step Corpus: Pour aller vers cette notice dans l'étape Curation :000368
- to stream PubMed, to step Curation: Pour aller vers cette notice dans l'étape Curation :000368
- to stream PubMed, to step Checkpoint: Pour aller vers cette notice dans l'étape Curation :000368
- to stream Ncbi, to step Merge: Pour aller vers cette notice dans l'étape Curation :000571
- to stream Ncbi, to step Curation: Pour aller vers cette notice dans l'étape Curation :000571
- to stream Ncbi, to step Checkpoint: Pour aller vers cette notice dans l'étape Curation :000571
- to stream Main, to step Merge: Pour aller vers cette notice dans l'étape Curation :000754
Links to Exploration step
pubmed:22551408Le document en format XML
<record><TEI><teiHeader><fileDesc><titleStmt><title xml:lang="en">Concentrating and recycling energy in lanthanide codopants for efficient and spectrally pure emission: the case of NaYF4:Er3+/Tm3+ upconverting nanocrystals.</title>
<author><name sortKey="Chan, Emory M" sort="Chan, Emory M" uniqKey="Chan E" first="Emory M" last="Chan">Emory M. Chan</name>
<affiliation wicri:level="1"><nlm:affiliation>The Molecular Foundry, Lawrence Berkeley National Laboratory, Berkeley, California 94720, United States. emchan@lbl.gov</nlm:affiliation>
<country xml:lang="fr">États-Unis</country>
<wicri:regionArea>The Molecular Foundry, Lawrence Berkeley National Laboratory, Berkeley, California 94720</wicri:regionArea>
<wicri:noRegion>California 94720</wicri:noRegion>
</affiliation>
</author>
<author><name sortKey="Gargas, Daniel J" sort="Gargas, Daniel J" uniqKey="Gargas D" first="Daniel J" last="Gargas">Daniel J. Gargas</name>
</author>
<author><name sortKey="Schuck, P James" sort="Schuck, P James" uniqKey="Schuck P" first="P James" last="Schuck">P James Schuck</name>
</author>
<author><name sortKey="Milliron, Delia J" sort="Milliron, Delia J" uniqKey="Milliron D" first="Delia J" last="Milliron">Delia J. Milliron</name>
</author>
</titleStmt>
<publicationStmt><idno type="wicri:source">PubMed</idno>
<date when="2012">2012</date>
<idno type="doi">10.1021/jp302401j</idno>
<idno type="RBID">pubmed:22551408</idno>
<idno type="pmid">22551408</idno>
<idno type="wicri:Area/PubMed/Corpus">000368</idno>
<idno type="wicri:explorRef" wicri:stream="PubMed" wicri:step="Corpus" wicri:corpus="PubMed">000368</idno>
<idno type="wicri:Area/PubMed/Curation">000368</idno>
<idno type="wicri:explorRef" wicri:stream="PubMed" wicri:step="Curation">000368</idno>
<idno type="wicri:Area/PubMed/Checkpoint">000368</idno>
<idno type="wicri:explorRef" wicri:stream="Checkpoint" wicri:step="PubMed">000368</idno>
<idno type="wicri:Area/Ncbi/Merge">000571</idno>
<idno type="wicri:Area/Ncbi/Curation">000571</idno>
<idno type="wicri:Area/Ncbi/Checkpoint">000571</idno>
<idno type="wicri:Area/Main/Merge">000754</idno>
<idno type="wicri:Area/Main/Curation">000753</idno>
</publicationStmt>
<sourceDesc><biblStruct><analytic><title xml:lang="en">Concentrating and recycling energy in lanthanide codopants for efficient and spectrally pure emission: the case of NaYF4:Er3+/Tm3+ upconverting nanocrystals.</title>
<author><name sortKey="Chan, Emory M" sort="Chan, Emory M" uniqKey="Chan E" first="Emory M" last="Chan">Emory M. Chan</name>
<affiliation wicri:level="1"><nlm:affiliation>The Molecular Foundry, Lawrence Berkeley National Laboratory, Berkeley, California 94720, United States. emchan@lbl.gov</nlm:affiliation>
<country xml:lang="fr">États-Unis</country>
<wicri:regionArea>The Molecular Foundry, Lawrence Berkeley National Laboratory, Berkeley, California 94720</wicri:regionArea>
<wicri:noRegion>California 94720</wicri:noRegion>
</affiliation>
</author>
<author><name sortKey="Gargas, Daniel J" sort="Gargas, Daniel J" uniqKey="Gargas D" first="Daniel J" last="Gargas">Daniel J. Gargas</name>
</author>
<author><name sortKey="Schuck, P James" sort="Schuck, P James" uniqKey="Schuck P" first="P James" last="Schuck">P James Schuck</name>
</author>
<author><name sortKey="Milliron, Delia J" sort="Milliron, Delia J" uniqKey="Milliron D" first="Delia J" last="Milliron">Delia J. Milliron</name>
</author>
</analytic>
<series><title level="j">The journal of physical chemistry. B</title>
<idno type="eISSN">1520-5207</idno>
<imprint><date when="2012" type="published">2012</date>
</imprint>
</series>
</biblStruct>
</sourceDesc>
</fileDesc>
<profileDesc><textClass><keywords scheme="KwdEn" xml:lang="en"><term>Algorithms</term>
<term>Energy Transfer</term>
<term>Erbium (chemistry)</term>
<term>Fluorides (chemistry)</term>
<term>Lanthanoid Series Elements (chemistry)</term>
<term>Nanoparticles (chemistry)</term>
<term>Thulium (chemistry)</term>
<term>Yttrium (chemistry)</term>
</keywords>
<keywords scheme="KwdFr" xml:lang="fr"><term>Algorithmes</term>
<term>Erbium ()</term>
<term>Fluorures ()</term>
<term>Lanthanides ()</term>
<term>Nanoparticules ()</term>
<term>Thulium ()</term>
<term>Transfert d'énergie</term>
<term>Yttrium ()</term>
</keywords>
<keywords scheme="MESH" type="chemical" qualifier="chemistry" xml:lang="en"><term>Erbium</term>
<term>Fluorides</term>
<term>Lanthanoid Series Elements</term>
<term>Thulium</term>
<term>Yttrium</term>
</keywords>
<keywords scheme="MESH" qualifier="chemistry" xml:lang="en"><term>Nanoparticles</term>
</keywords>
<keywords scheme="MESH" xml:lang="en"><term>Algorithms</term>
<term>Energy Transfer</term>
</keywords>
<keywords scheme="MESH" xml:lang="fr"><term>Algorithmes</term>
<term>Erbium</term>
<term>Fluorures</term>
<term>Lanthanides</term>
<term>Nanoparticules</term>
<term>Thulium</term>
<term>Transfert d'énergie</term>
<term>Yttrium</term>
</keywords>
</textClass>
</profileDesc>
</teiHeader>
<front><div type="abstract" xml:lang="en">In lanthanide-doped materials, energy transfer (ET) between codopant ions can populate or depopulate excited states, giving rise to spectrally pure luminescence that is valuable for the multicolor imaging and simultaneous tracking of multiple biological species. Here, we use the case study of NaYF(4) nanocrystals codoped with Er(3+) and Tm(3+) to theoretically investigate the ET mechanisms that selectively enhance and suppress visible upconversion luminescence under near-infrared excitation. Using an experimentally validated population balance model and using a path-tracing algorithm to objectively identify transitions with the most significant contributions, we isolated a network of six pathways that combine to divert energy away from the green-emitting manifolds and concentrate it in the Tm(3+):(3)F(4) manifold, which then participates in energy transfer upconversion (ETU) to populate the red-emitting Er(3+):(4)F(9/2) manifold. We conclude that the strength of this ETU process is a function of the strong coupling of the Tm(3+):(3)F(4) manifold and its ground state, the near-optimum band alignment of Er(3+) and Tm(3+) manifolds, and the concentration of population in Tm(3+):(3)F(4). These factors, along with the ability to recycle energy not utilized for red emission, also contribute to the enhanced quantum yield of NaYF(4):Er(3+)/Tm(3+). We generalize a scheme for applying these energy concentration and recycling pathways to other combinations of lanthanide dopants. Ultimately, these ET pathways and others elucidated by our theoretical modeling will enable the programming of physical properties in lanthanide-doped materials for a variety of applications that demand strong and precisely defined optical transitions.</div>
</front>
</TEI>
</record>
Pour manipuler ce document sous Unix (Dilib)
EXPLOR_STEP=$WICRI_ROOT/Wicri/Terre/explor/ThuliumV1/Data/Main/Curation
HfdSelect -h $EXPLOR_STEP/biblio.hfd -nk 000753 | SxmlIndent | more
Ou
HfdSelect -h $EXPLOR_AREA/Data/Main/Curation/biblio.hfd -nk 000753 | SxmlIndent | more
Pour mettre un lien sur cette page dans le réseau Wicri
{{Explor lien |wiki= Wicri/Terre |area= ThuliumV1 |flux= Main |étape= Curation |type= RBID |clé= pubmed:22551408 |texte= Concentrating and recycling energy in lanthanide codopants for efficient and spectrally pure emission: the case of NaYF4:Er3+/Tm3+ upconverting nanocrystals. }}
Pour générer des pages wiki
HfdIndexSelect -h $EXPLOR_AREA/Data/Main/Curation/RBID.i -Sk "pubmed:22551408" \ | HfdSelect -Kh $EXPLOR_AREA/Data/Main/Curation/biblio.hfd \ | NlmPubMed2Wicri -a ThuliumV1
![]() | This area was generated with Dilib version V0.6.21. | ![]() |