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dc.contributor.author
Diaz, Sebastian Andres
dc.contributor.author
Giordano, Luciana
dc.contributor.author
Azcárate, Julio César
dc.contributor.author
Jovin, Tomás
dc.contributor.author
Jares, Elizabeth Andrea
dc.date.available
2016-02-10T16:03:07Z
dc.date.issued
2013-01
dc.identifier.citation
Diaz, Sebastian Andres; Giordano, Luciana; Azcárate, Julio César; Jovin, Tomás; Jares, Elizabeth Andrea; Quantum Dots as Templates for Self-Assembly of Photoswitchable Polymers: Small, Dual-Color Nanoparticles Capable of Facile Photomodulation; American Chemical Society; Journal of the American Chemical Society; 135; 8; 1-2013; 3208-3217
dc.identifier.issn
0002-7863
dc.identifier.uri
http://hdl.handle.net/11336/4104
dc.description.abstract
A photomodulatable amphiphilic polymer has been synthesized with a backbone of poly[isobutylene-alt-maleic anhydride] and pendant dodecyl alkyl chains, Lucifer Yellow (LY) fluorescent probes, and diheteroarylethenes photochromic (PC) groups. The latter serve as reversible UV-activated FRET acceptors for the LY donors. We characterized the spectral and switching properties of the polymer in an organic solvent (CHCl3). In an aqueous medium the polymer forms polymersomes, constituting fluorescence probes ~75 nm in diameter. Self-assembly of the polymer on the surface of a quantum dot (QD) serving as a template creates a dual-color photoswitchable nanoparticle (psNP) with improved properties due to the increase in polymer density and efficiency of PC photoconversion. The psNP exhibits a second QD red emission band that functions as an internal standard requiring only a single excitation wavelength, and is much reduced in size (<20 nm diameter) compared to the polymersomes. The QD template also greatly increases the depth of modulation by photochromic FRET of the LY emission monitored by both steady-state and time-resolved (lifetime) fluorescence (from 20% to 70%, and from 12% to 55%, respectively).
dc.format
application/pdf
dc.language.iso
eng
dc.publisher
American Chemical Society
dc.rights
info:eu-repo/semantics/restrictedAccess
dc.rights.uri
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.subject
Quantum Dots
dc.subject
Fret
dc.subject
Polymersomes
dc.subject
Fluoescence
dc.subject.classification
Química Coloidal
dc.subject.classification
Ciencias Químicas
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CIENCIAS NATURALES Y EXACTAS
dc.title
Quantum Dots as Templates for Self-Assembly of Photoswitchable Polymers: Small, Dual-Color Nanoparticles Capable of Facile Photomodulation
dc.type
info:eu-repo/semantics/article
dc.type
info:ar-repo/semantics/artículo
dc.type
info:eu-repo/semantics/publishedVersion
dc.date.updated
2016-03-30 10:35:44.97925-03
dc.journal.volume
135
dc.journal.number
8
dc.journal.pagination
3208-3217
dc.journal.pais
Estados Unidos
dc.journal.ciudad
Washington
dc.description.fil
Fil: Diaz, Sebastian Andres. Max Planck Institute for Biophysical Chemistry. Laboratory of Cellular Dynamics; Alemania. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Centro de Investigaciones en Hidratos de Carbono; Argentina
dc.description.fil
Fil: Giordano, Luciana. Max Planck Institute for Biophysical Chemistry. Laboratory of Cellular Dynamics; Alemania. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Parque Centenario. Centro de Investigaciones en Bionanociencias "Elizabeth Jares Erijman"; Argentina
dc.description.fil
Fil: Azcárate, Julio César. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico la Plata. Instituto de Investigaciones Fisicoquímicas Teóricas y Aplicadas; Argentina
dc.description.fil
Fil: Jovin, Tomás. Max Planck Institute for Biophysical Chemistry. Laboratory of Cellular Dynamics; Alemania
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; Argentina
dc.journal.title
Journal of the American Chemical Society
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/http://pubs.acs.org/doi/abs/10.1021/ja3117813
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/doi/http://dx.doi.org/10.1021/ja3117813
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/issn/0002-7863


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