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Titre du document / Document title

An effective method to prepare polymer/nanocrystal composites with tunable emission over the whole visible light range

Auteur(s) / Author(s)

Wei Haotong (1) ; Sun Haizhu (1 2) ; Zhang Hao (1) ; Gao Cong (1) ; Yang Bai (1) ;

Affiliation(s) du ou des auteurs / Author(s) Affiliation(s)

(1) State Key Laboratory of Supramolecular Structure and Materials, College of Chemistry, Jilin University, 130012, Changchun, China
(2) College of Chemistry, Northeast Normal University, 130024, Changchun, China

Résumé / Abstract

Materials with emission over the whole visible range (400-800 nm) have been obtained through incorporating single-colored CdTe nanocrystals (NCs) into a poly(p-phenylene vinylene) (PPV) precursor [the sulfonium polyelectrolyte precursor of PPV]. Firstly, the quantum yield (QY) of the PPV precursor was improved to ∼50% via heat treatment of a mixed solution of the PPV precursor and poly(vinyl alcohol) (PVA) at 100 °C for 3 min. Then, single-colored CdTe NCs were incorporated into the mixed solution. The introduction of the PVA was necessary to reduce the electrostatic interaction between the PPV precursor and CdTe NCs, which improved their compatibility. The reduced electrostatic interaction eliminated Förster resonance energy transfer (FRET) processes between NCs, as well as between NCs and the PPV precursor, which allowed the functional integration of the polymer and NCs. Consequently, polymer/NC composites with almost any Commission Internationale de L’Eclairage (CIE) coordinates can be achieved by simply changing the size and amount of the NCs. In particular, when the emission wavelength of the CdTe NCs was 559 nm, a pure white-light emitting material with CIE coordinates (0.337, 0.332) was obtained.[IMAGE]

Revue / Journal Title

Nano research    ISSN  1998-0000 

Source / Source

2010, vol. 3, no7, pp. 496-505 [10 page(s) (article)]

Langue / Language

Anglais

Editeur / Publisher

Springer, Heidelberg, ALLEMAGNE  (2008) (Revue)

Mots-clés d'auteur / Author Keywords

Nanocrystal

;

poly(p-phenylene vinylene)

;

CdTe

;

poly(vinyl alcohol)

;

Localisation / Location

35400060551455.0005

Tsinghua University Press and Springer-Verlag Berlin Heidelberg, 2010
Nº notice refdoc (ud4) : 22900534



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