Photoswitchable water-soluble quantum dots: PcFRET based on amphiphilic photochromic polymer coating

A novel surface architecture was developed to generate biocompatible and stable photoswitchable quantum dots (psQDs). Photochromic diheteroarylethenes, which undergo thermally stable photoconversions between two forms with different spectral properties in organic solvents, were covalently linked to...

Descripción completa

Guardado en:
Detalles Bibliográficos
Autores principales: Menéndez, Guillermo Oscar, Giordano, Luciana, Jares, Elizabeth Andrea
Publicado: 2011
Materias:
amphiphilic polymer
FRET
nanoparticle coating
photochromism
quantum dots
Amphiphilic polymers
Amphiphilics
Aqueous medium
CdSe/ZnS
Fatigue resistance
Hydrophobic core
Novel surfaces
Photo-stability
Photo-switchable
Photochromic polymers
Photoconversion
Quantum Dot
Spectral properties
Thermally stable
Time-resolved fluorescence
Water soluble quantum dots
Nanoparticles
Organic solvents
Photochromism
Photopolymers
Plastic coatings
Polymers
Semiconductor quantum dots
Acceso en línea:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_19360851_v5_n4_p2795_Diaz
http://hdl.handle.net/20.500.12110/paper_19360851_v5_n4_p2795_Diaz
Aporte de:
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires
id paper:paper_19360851_v5_n4_p2795_Diaz
record_format dspace
spelling paper:paper_19360851_v5_n4_p2795_Diaz2023-06-08T16:32:08Z Photoswitchable water-soluble quantum dots: PcFRET based on amphiphilic photochromic polymer coating Menéndez, Guillermo Oscar Giordano, Luciana Jares, Elizabeth Andrea amphiphilic polymer FRET nanoparticle coating photochromism quantum dots Amphiphilic polymers Amphiphilics Aqueous medium CdSe/ZnS Fatigue resistance FRET Hydrophobic core nanoparticle coating Novel surfaces Photo-stability Photo-switchable Photochromic polymers Photoconversion Quantum Dot quantum dots Spectral properties Thermally stable Time-resolved fluorescence Water soluble quantum dots Nanoparticles Organic solvents Photochromism Photopolymers Plastic coatings Polymers Semiconductor quantum dots A novel surface architecture was developed to generate biocompatible and stable photoswitchable quantum dots (psQDs). Photochromic diheteroarylethenes, which undergo thermally stable photoconversions between two forms with different spectral properties in organic solvents, were covalently linked to an amphiphilic polymer that self-assembles with the lipophilic chains surrounding commercial hydrophobic core-shell CdSe/ZnS QDs. This strategy creates a small (∼7 nm diameter) nanoparticle (NP) that is soluble in aqueous medium. The NP retains and even enhances the desirable properties of the original QD (broad excitation, narrow emission, photostability), but the brightness of its emission can be tailored by light. The modulation of emission monitored by steady-state and time-resolved fluorescence was 35-40%. The psQDs exhibit unprecedented photostability and fatigue resistance over at least 16 cycles of photoconversion. © 2011 American Chemical Society. Fil:Menéndez, G.O. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. Fil:Giordano, L. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. Fil:Jares-Erijman, E.A. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. 2011 https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_19360851_v5_n4_p2795_Diaz http://hdl.handle.net/20.500.12110/paper_19360851_v5_n4_p2795_Diaz
institution Universidad de Buenos Aires
institution_str I-28
repository_str R-134
collection Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA)
topic amphiphilic polymer
FRET
nanoparticle coating
photochromism
quantum dots
Amphiphilic polymers
Amphiphilics
Aqueous medium
CdSe/ZnS
Fatigue resistance
FRET
Hydrophobic core
nanoparticle coating
Novel surfaces
Photo-stability
Photo-switchable
Photochromic polymers
Photoconversion
Quantum Dot
quantum dots
Spectral properties
Thermally stable
Time-resolved fluorescence
Water soluble quantum dots
Nanoparticles
Organic solvents
Photochromism
Photopolymers
Plastic coatings
Polymers
Semiconductor quantum dots
spellingShingle amphiphilic polymer
FRET
nanoparticle coating
photochromism
quantum dots
Amphiphilic polymers
Amphiphilics
Aqueous medium
CdSe/ZnS
Fatigue resistance
FRET
Hydrophobic core
nanoparticle coating
Novel surfaces
Photo-stability
Photo-switchable
Photochromic polymers
Photoconversion
Quantum Dot
quantum dots
Spectral properties
Thermally stable
Time-resolved fluorescence
Water soluble quantum dots
Nanoparticles
Organic solvents
Photochromism
Photopolymers
Plastic coatings
Polymers
Semiconductor quantum dots
Menéndez, Guillermo Oscar
Giordano, Luciana
Jares, Elizabeth Andrea
Photoswitchable water-soluble quantum dots: PcFRET based on amphiphilic photochromic polymer coating
topic_facet amphiphilic polymer
FRET
nanoparticle coating
photochromism
quantum dots
Amphiphilic polymers
Amphiphilics
Aqueous medium
CdSe/ZnS
Fatigue resistance
FRET
Hydrophobic core
nanoparticle coating
Novel surfaces
Photo-stability
Photo-switchable
Photochromic polymers
Photoconversion
Quantum Dot
quantum dots
Spectral properties
Thermally stable
Time-resolved fluorescence
Water soluble quantum dots
Nanoparticles
Organic solvents
Photochromism
Photopolymers
Plastic coatings
Polymers
Semiconductor quantum dots
description A novel surface architecture was developed to generate biocompatible and stable photoswitchable quantum dots (psQDs). Photochromic diheteroarylethenes, which undergo thermally stable photoconversions between two forms with different spectral properties in organic solvents, were covalently linked to an amphiphilic polymer that self-assembles with the lipophilic chains surrounding commercial hydrophobic core-shell CdSe/ZnS QDs. This strategy creates a small (∼7 nm diameter) nanoparticle (NP) that is soluble in aqueous medium. The NP retains and even enhances the desirable properties of the original QD (broad excitation, narrow emission, photostability), but the brightness of its emission can be tailored by light. The modulation of emission monitored by steady-state and time-resolved fluorescence was 35-40%. The psQDs exhibit unprecedented photostability and fatigue resistance over at least 16 cycles of photoconversion. © 2011 American Chemical Society.
author Menéndez, Guillermo Oscar
Giordano, Luciana
Jares, Elizabeth Andrea
author_facet Menéndez, Guillermo Oscar
Giordano, Luciana
Jares, Elizabeth Andrea
author_sort Menéndez, Guillermo Oscar
title Photoswitchable water-soluble quantum dots: PcFRET based on amphiphilic photochromic polymer coating
title_short Photoswitchable water-soluble quantum dots: PcFRET based on amphiphilic photochromic polymer coating
title_full Photoswitchable water-soluble quantum dots: PcFRET based on amphiphilic photochromic polymer coating
title_fullStr Photoswitchable water-soluble quantum dots: PcFRET based on amphiphilic photochromic polymer coating
title_full_unstemmed Photoswitchable water-soluble quantum dots: PcFRET based on amphiphilic photochromic polymer coating
title_sort photoswitchable water-soluble quantum dots: pcfret based on amphiphilic photochromic polymer coating
publishDate 2011
url https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_19360851_v5_n4_p2795_Diaz
http://hdl.handle.net/20.500.12110/paper_19360851_v5_n4_p2795_Diaz
work_keys_str_mv AT menendezguillermooscar photoswitchablewatersolublequantumdotspcfretbasedonamphiphilicphotochromicpolymercoating
AT giordanoluciana photoswitchablewatersolublequantumdotspcfretbasedonamphiphilicphotochromicpolymercoating
AT jareselizabethandrea photoswitchablewatersolublequantumdotspcfretbasedonamphiphilicphotochromicpolymercoating
_version_ 1768543534842904576

Ejemplares similares