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dc.contributor.author
Diaz, Sebastian Andres
dc.contributor.author
Gillanders, Florencia
dc.contributor.author
Jares, Elizabeth Andrea
dc.contributor.author
Jovin, Thomas M.
dc.date.available
2018-03-26T18:17:27Z
dc.date.issued
2015-01
dc.identifier.citation
Diaz, Sebastian Andres; Gillanders, Florencia; Jares, Elizabeth Andrea; Jovin, Thomas M.; Photoswitchable semiconductor nanocrystals with self-regulating photochromic Förster resonance energy transfer acceptors; Nature Publishing Group; Nature Communications; 6; 1-2015; 1-11
dc.identifier.issn
2041-1723
dc.identifier.uri
http://hdl.handle.net/11336/39941
dc.description.abstract
Photoswitchable molecules and nanoparticles constitute superior biosensors for a wide range of industrial, research and biomedical applications. Rendered reversible by spontaneous or deterministic means, such probes facilitate many of the techniques in fluorescence microscopy that surpass the optical resolution dictated by diffraction. Here we have devised a family of photoswitchable quantum dots (psQDs) in which the semiconductor core functions as a fluorescence donor in Förster resonance energy transfer (FRET), and multiple photochromic diheteroarylethene groups function as acceptors upon activation by ultraviolet light. The QDs were coated with a polymer bearing photochromic groups attached via linkers of different length. Despite the resulting nominal differences in donor-acceptor separation and anticipated FRET efficiencies, the maximum quenching of all psQD preparations was 38±2%. This result was attributable to the large ultraviolet absorption cross-section of the QDs, leading to preferential cycloreversion of photochromic groups situated closer to the nanoparticle surface and/or with a more favourable orientation.
dc.format
application/pdf
dc.language.iso
eng
dc.publisher
Nature Publishing Group
dc.rights
info:eu-repo/semantics/restrictedAccess
dc.rights.uri
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.subject
Physical Sciences
dc.subject
Nanotechnology
dc.subject
Optical Physics
dc.subject
Physical Chemistry
dc.subject.classification
Otras Ciencias Químicas
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Ciencias Químicas
dc.subject.classification
CIENCIAS NATURALES Y EXACTAS
dc.title
Photoswitchable semiconductor nanocrystals with self-regulating photochromic Förster resonance energy transfer acceptors
dc.type
info:eu-repo/semantics/article
dc.type
info:ar-repo/semantics/artículo
dc.type
info:eu-repo/semantics/publishedVersion
dc.date.updated
2018-03-02T14:02:34Z
dc.journal.volume
6
dc.journal.pagination
1-11
dc.journal.pais
Estados Unidos
dc.description.fil
Fil: Diaz, Sebastian Andres. Max Planck Institute for Biophysical Chemistry; Alemania
dc.description.fil
Fil: Gillanders, Florencia. Max Planck Institute for Biophysical Chemistry; Alemania. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Centro de Investigaciones en Hidratos de Carbono. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Centro de Investigaciones en Hidratos de Carbono; Argentina
dc.description.fil
Fil: Jares, Elizabeth Andrea. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Centro de Investigaciones en Hidratos de Carbono. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Centro de Investigaciones en Hidratos de Carbono; Argentina
dc.description.fil
Fil: Jovin, Thomas M.. Max Planck Institute for Biophysical Chemistry; Alemania
dc.journal.title
Nature Communications
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/doi/http://dx.doi.org/10.1038/ncomms7036
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/https://www.nature.com/articles/ncomms7036


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