DARO, Nathalie; MOULET, Lucie; PENIN, Nicolas; PARADIS, Nicolas; LÉTARD, Jean-François; LEBRAUD, Eric; BUFFIERE, Sonia; CHASTANET, Guillaume; GUIONNEAU, Philippe

doi:10.3390/ma10010060

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DARO, Nathalie
Institut de Chimie de la Matière Condensée de Bordeaux [ICMCB]

MOULET, Lucie
Institut de Chimie de la Matière Condensée de Bordeaux [ICMCB]

PENIN, Nicolas
Institut de Chimie de la Matière Condensée de Bordeaux [ICMCB]

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Article de revue

Ce document a été publié dans

Materials. 2017, vol. 10, n° 1, p. 60

MDPI

Résumé en anglais

Spin-crossover (SCO) triazole-based coordination polymers can be synthesized by micelle techniques, which almost always lead to rod-shaped nanoparticles. In order to notably reach new morphologies, we explore here the potentiality of the spray-drying (SD) method to get SCO materials. Three SCO coordination polymers and a mononuclear complex are investigated. In all cases, the SD method obtains particles definitely showing SCO. The features of the latter are yet always different from those of the referenced materials, in the sense that SCO is more gradual and incomplete, in adequacy with the poor crystallinity of the powders obtained by SD. In the case of coordination polymers, the particles are preferentially spherical. Indications of possible polymorphism and/or new materials induced by the use of the SD method are evidenced. In the case of the mononuclear complex, the SD method has allowed reproducing, in a quick and easy way, the well-known bulk compound. This exploratory work demonstrates the relevance of the concept and opens the way to a systematic scrutiny of all the experimental parameters to tune the size, morphology, and properties of the SD-synthesized SCO particles.< Réduire

Mots clés en anglais

spin crossover

spray-drying

nanoparticles

iron

triazole

molecular switch

crystallite

DOI

http://dx.doi.org/10.3390/ma10010060

Project ANR

Éléments de mémoires multifonctionnels utilisant des connections supramoléculaires auto assemblées - ANR-11-BS08-0006

Origine

Importé de hal

Unités de recherche

Institut de Chimie de la Matière Condensée de Bordeaux (ICMCB) - UMR 5026