Long-distance energy transfer photosensitizers arising in hybrid nanoparticles leading to fluorescence emission and singlet oxygen luminescence quenching.
Identifieur interne : 000860 ( Main/Exploration ); précédent : 000859; suivant : 000861Long-distance energy transfer photosensitizers arising in hybrid nanoparticles leading to fluorescence emission and singlet oxygen luminescence quenching.
Auteurs : Aymeric Sève [France] ; Pierre Couleaud ; François Lux ; Olivier Tillement ; Philippe Arnoux ; Jean-Claude André ; Céline FrochotSource :
- Photochemical & photobiological sciences : Official journal of the European Photochemistry Association and the European Society for Photobiology [ 1474-9092 ] ; 2012.
Descripteurs français
- KwdFr :
- Fluorescence, Humains, Lanthane (), Luminescence, Modèles chimiques, Nanoparticules (), Oxydes (), Oxygène singulet (), Photosensibilisants (), Photosensibilisants (administration et posologie), Photothérapie dynamique (), Processus photochimiques, Siloxanes (), Spectrométrie de fluorescence, Transfert d'énergie, Transfert d'énergie par résonance de fluorescence, Tumeurs (traitement médicamenteux), Vecteurs de médicaments ().
- MESH :
- administration et posologie : Photosensibilisants.
- traitement médicamenteux : Tumeurs.
- Fluorescence, Humains, Lanthane, Luminescence, Modèles chimiques, Nanoparticules, Oxydes, Oxygène singulet, Photosensibilisants, Photothérapie dynamique, Processus photochimiques, Siloxanes, Spectrométrie de fluorescence, Transfert d'énergie, Transfert d'énergie par résonance de fluorescence, Vecteurs de médicaments.
English descriptors
- KwdEn :
- Drug Carriers (chemistry), Energy Transfer, Fluorescence, Fluorescence Resonance Energy Transfer, Humans, Lanthanum (chemistry), Luminescence, Models, Chemical, Nanoparticles (chemistry), Neoplasms (drug therapy), Oxides (chemistry), Photochemical Processes, Photochemotherapy (methods), Photosensitizing Agents (administration & dosage), Photosensitizing Agents (chemistry), Siloxanes (chemistry), Singlet Oxygen (chemistry), Spectrometry, Fluorescence.
- MESH :
- chemical , administration & dosage : Photosensitizing Agents.
- chemical , chemistry : Drug Carriers, Lanthanum, Oxides, Photosensitizing Agents, Siloxanes, Singlet Oxygen.
- chemistry : Nanoparticles.
- drug therapy : Neoplasms.
- methods : Photochemotherapy.
- Energy Transfer, Fluorescence, Fluorescence Resonance Energy Transfer, Humans, Luminescence, Models, Chemical, Photochemical Processes, Spectrometry, Fluorescence.
- mix :
Abstract
This paper presents energy transfer occurring in small organically modified core-shell nanoparticles (core lanthanide oxide, shell polysiloxane) (diameter < 10 nm) conjugated with photosensitizers designed for photodynamic therapy applications. These nanoparticles covalently encapsulate a photosensitizing PDT drug in different concentrations. Stable dispersions of the nanoparticles were prepared and the photophysical properties of the photosensitizers were studied and compared to those of the photosensitizers in solution. Increasing the photosensitizer concentration in the nanoparticles was not found to cause any changes in the absorption properties while fluorescence and singlet oxygen quantum yields decreased. As a possible explanation, we have suggested that both long distance energy transfer such as FRET and self-quenching could occur into the nanoparticles. A simple "trend" model of this kind of energy transfer complies with results of experiments on steady state fluorescence and singlet oxygen luminescence.
Url:
DOI: 10.1039/c2pp05324a
PubMed: 22362130
Affiliations:
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Le document en format XML
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sortKey="Couleaud, Pierre" sort="Couleaud, Pierre" uniqKey="Couleaud P" first="Pierre" last="Couleaud">Pierre Couleaud</name></author><author><name sortKey="Lux, Francois" sort="Lux, Francois" uniqKey="Lux F" first="François" last="Lux">François Lux</name></author><author><name sortKey="Tillement, Olivier" sort="Tillement, Olivier" uniqKey="Tillement O" first="Olivier" last="Tillement">Olivier Tillement</name></author><author><name sortKey="Arnoux, Philippe" sort="Arnoux, Philippe" uniqKey="Arnoux P" first="Philippe" last="Arnoux">Philippe Arnoux</name></author><author><name sortKey="Andre, Jean Claude" sort="Andre, Jean Claude" uniqKey="Andre J" first="Jean-Claude" last="André">Jean-Claude André</name></author><author><name sortKey="Frochot, Celine" sort="Frochot, Celine" uniqKey="Frochot C" first="Céline" last="Frochot">Céline Frochot</name></author></analytic><series><title level="j">Photochemical & photobiological sciences : Official journal of the European Photochemistry 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xml:lang="fr"><term>Fluorescence</term><term>Humains</term><term>Lanthane ()</term><term>Luminescence</term><term>Modèles chimiques</term><term>Nanoparticules ()</term><term>Oxydes ()</term><term>Oxygène singulet ()</term><term>Photosensibilisants ()</term><term>Photosensibilisants (administration et posologie)</term><term>Photothérapie dynamique ()</term><term>Processus photochimiques</term><term>Siloxanes ()</term><term>Spectrométrie de fluorescence</term><term>Transfert d'énergie</term><term>Transfert d'énergie par résonance de fluorescence</term><term>Tumeurs (traitement médicamenteux)</term><term>Vecteurs de médicaments ()</term></keywords><keywords scheme="MESH" type="chemical" qualifier="administration & dosage" xml:lang="en"><term>Photosensitizing Agents</term></keywords><keywords scheme="MESH" type="chemical" qualifier="chemistry" xml:lang="en"><term>Drug Carriers</term><term>Lanthanum</term><term>Oxides</term><term>Photosensitizing 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xml:lang="fr"><term>Fluorescence</term><term>Humains</term><term>Lanthane</term><term>Luminescence</term><term>Modèles chimiques</term><term>Nanoparticules</term><term>Oxydes</term><term>Oxygène singulet</term><term>Photosensibilisants</term><term>Photothérapie dynamique</term><term>Processus photochimiques</term><term>Siloxanes</term><term>Spectrométrie de fluorescence</term><term>Transfert d'énergie</term><term>Transfert d'énergie par résonance de fluorescence</term><term>Vecteurs de médicaments</term></keywords><keywords scheme="mix" xml:lang="en"><term>AGENTS</term><term>CARRIER</term><term>CELLS</term><term>PARTICLES</term><term>PHOTODYNAMIC THERAPY</term><term>PRODRUGS</term></keywords></textClass></profileDesc></teiHeader><front><div type="abstract" xml:lang="en">This paper presents energy transfer occurring in small organically modified core-shell nanoparticles (core lanthanide oxide, shell polysiloxane) (diameter < 10 nm) conjugated with photosensitizers designed for photodynamic therapy applications. These nanoparticles covalently encapsulate a photosensitizing PDT drug in different concentrations. Stable dispersions of the nanoparticles were prepared and the photophysical properties of the photosensitizers were studied and compared to those of the photosensitizers in solution. Increasing the photosensitizer concentration in the nanoparticles was not found to cause any changes in the absorption properties while fluorescence and singlet oxygen quantum yields decreased. As a possible explanation, we have suggested that both long distance energy transfer such as FRET and self-quenching could occur into the nanoparticles. A simple "trend" model of this kind of energy transfer complies with results of experiments on steady state fluorescence and singlet oxygen luminescence.</div></front></TEI><affiliations><list><country><li>France</li></country><region><li>Grand Est</li><li>Lorraine (région)</li></region><settlement><li>Nancy</li></settlement></list><tree><noCountry><name sortKey="Andre, Jean Claude" sort="Andre, Jean Claude" uniqKey="Andre J" first="Jean-Claude" last="André">Jean-Claude André</name><name sortKey="Arnoux, Philippe" sort="Arnoux, Philippe" uniqKey="Arnoux P" first="Philippe" last="Arnoux">Philippe Arnoux</name><name sortKey="Couleaud, Pierre" sort="Couleaud, Pierre" uniqKey="Couleaud P" first="Pierre" last="Couleaud">Pierre Couleaud</name><name sortKey="Frochot, Celine" sort="Frochot, Celine" uniqKey="Frochot C" first="Céline" last="Frochot">Céline Frochot</name><name sortKey="Lux, Francois" sort="Lux, Francois" uniqKey="Lux F" first="François" last="Lux">François Lux</name><name sortKey="Tillement, Olivier" sort="Tillement, Olivier" uniqKey="Tillement O" first="Olivier" last="Tillement">Olivier Tillement</name></noCountry><country name="France"><region name="Grand Est"><name sortKey="Seve, Aymeric" sort="Seve, Aymeric" uniqKey="Seve A" first="Aymeric" last="Sève">Aymeric Sève</name></region></country></tree></affiliations></record>Pour manipuler ce document sous Unix (Dilib)
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