GAPIN, Adèle; IDRISS, Hisham; BLANC, Sylvie; BILLON, Laurent; DELVILLE, Marie-Hélène; BOUSQUET, Antoine; LARTIGAU-DAGRON, Christine

doi:10.1016/j.reactfunctpolym.2020.104700

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GAPIN, Adèle
Université de Bordeaux [UB]
Laboratoire de Chimie des Polymères Organiques [LCPO]
Institut des sciences analytiques et de physico-chimie pour l'environnement et les materiaux [IPREM]

IDRISS, Hisham
Institut des sciences analytiques et de physico-chimie pour l'environnement et les materiaux [IPREM]

BLANC, Sylvie
Institut des sciences analytiques et de physico-chimie pour l'environnement et les materiaux [IPREM]

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Ce document a été publié dans

Reactive and Functional Polymers. 2020-08, vol. 155, p. 104700 (9 p.)

Elsevier

Résumé en anglais

An efficient strategy is described to prepare electron donor/acceptor hybrid nanoparticles by anchoring a low band-gap polymer onto zinc oxide spheres. Functional macromolecules, bearing triethoxysilane or catechol terminal groups, were synthesized by polycondensation, using a ternary blend reaction, i.e. mixing two monomers and an end-capper. Importantly, and in agreement with Carothers theory, the amount of end-capper allowed to control the chains molar mass. ZnO spherical nanoparticles were then grafted with the polymer chains and TEM images confirmed that core@shell materials were formed. The surface morphology of these hybrid materials was anchoring agent dependent. When silane functionalized polymers were used, cross-linked aggregates were obtained due to competition between self-condensation of silanes and reaction with ZnO surface hydroxyl groups. On the contrary, well-dispersed core-shell particles were synthesized with catechol polymers as anchoring agents. This grafting onto methodology led to patchy nanoparticles on which both zinc oxide and polymer surfaces were accessible. The optical properties of the hybrid material were ascertained by UV–visible absorption and photoluminescence to show a specific quenching of the polymer fluorescence by the metal oxide.< Réduire

Mots clés en anglais

Low band-gap polymer

Hybrid nanoparticles

Grafting

Stille polycondensation

Zinc oxide

Silane

low band-gap polymer

hybrid nanoparticles

grafting

zinc oxide

silane

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Low band-gap polymer brushes: Influence of the end-group on the morphology of core-shell nanoparticles

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Résumé en anglais

Mots clés en anglais

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