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Article Dans Une Revue New Journal of Chemistry Année : 2019

Urea-assisted cooperative assembly of phosphorus dendrimer–zinc oxide hybrid nanostructures

Résumé

Herein, phosphorus dendrimer-assisted sol–gel mineralisation of molecular zinc species is explored to access porous dendrimer–zinc oxide hybrid materials. Screening of various second-generation dendrimers peripherally-functionalized by phosphonate, catechol, ammonium and acetylacetonate groups showed a marked difference in terms of their morphology and hybrid composition, thereby highlighting the importance of surface-chemistry for the nucleation and growth of the zinc oxide inorganic phase. The homogeneous composition and distribution of the two dissimilar dendritic and metal oxide building-blocks is reached using phosphonate-terminated and catechol-terminated dendrimers. In contrast, significant leaching occurs in the case of ammonium-terminated and acetylacetonate-terminated dendrimers, leading rather to an enriched zinc oxide monophasic system. When urea was added as a ternary component, beyond improving mineralisation, interesting cooperative assembly was observed, particularly in the case of phosphonate-terminal dendrimers, which resulted in the formation of mesoporous phosphorus-containing lamellar zinc oxide hybrid materials.
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Dates et versions

hal-02332801 , version 1 (25-10-2019)

Identifiants

Citer

Samir El Hankari, Nadia Katir, Vincent Collière, Yannick Coppel, Mosto Bousmina, et al.. Urea-assisted cooperative assembly of phosphorus dendrimer–zinc oxide hybrid nanostructures. New Journal of Chemistry, 2019, 43 (5), pp.2141-2147. ⟨10.1039/C8NJ05705B⟩. ⟨hal-02332801⟩
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