Multi-site coordination N-phosphanylamidine ligands as stabilizers for the synthesis of ruthenium nanoparticles
Bronger, Raymond (Université de Toulouse)
Dung Le, Thanh (Université de Toulouse)
Bastin, Stéphanie (Université de Toulouse)
García-Antón, Jordi (Laboratoire de Chimie de Coordination du CNRS)
Citadelle, Cécilia (Université de Toulouse)
Chaudret, Bruno (Laboratoire de Chimie de Coordination du CNRS)
Lecante, Pierre (Centre d'Elaboration de Matériaux et d'Etudes Structurales)
Igau, Alain (Université de Toulouse)
Philippot, Karine (Laboratoire de Chimie de Coordination du CNRS)

Fecha:	2011
Resumen:	The stabilization of ruthenium nanoparticles is achieved by using for the first time multiple donor coordination site-type ligands, the N-phosphanylamidines Image ID:c1nj20465c-t2. gif. These ligands, in which the donor sites are directly connected to one another, lead to the formation of small ruthenium nanoparticles in the size range 1. 7-3. 1 nm that display narrow size distributions and a hexagonal close packed crystalline structure of ruthenium bulk. The characterization of these new samples by a combination of techniques gives information on the surface state of the particles such as the coordination mode of the ligand and the presence of hydrides. CO molecules can also coordinate suggesting that the surface of the particles is not saturated. This work confirms the interest of screening novel ligands for the synthesis of metal nanoparticles and more particularly, of studying their coordination to probe metal nanoparticles' surface properties.
Derechos:	Tots els drets reservats.
Lengua:	Anglès
Documento:	Article ; recerca ; Versió sotmesa a revisió
Publicado en:	New journal of chemistry, Vol. 35, Issue 11 (September 2011) , p. 2653-2660, ISSN 1369-9261

DOI: 10.1039/c1nj20465c

Preprint 9 p, 1.5 MB

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