POLYTHIOURETHANE MATRIX CONTAINING NANOCRYSTALS

A nanocrystal composite comprising a plurality of nanocrystals comprising a core comprising a metal or a semiconductive compound or a mixture thereof and at least one ligand, wherein said core is surrounded by at least one ligand, and a polythiourethane matrix, wherein said polythiourethane matrix i...

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Bibliographische Detailangaben
Hauptverfasser:	SMITH, Daniel, RODRÍGUEZ, Denis, SEBASTIÁN PÉREZ, Rosa Maria, GÖTHEL, Frank, CARRERAS, Paz, CARRETÉ, Àlex, TORRES CANO, Elisabet, MARQUET CORTÉS, Jordi, SALHI, Fouad, GUIRADO, Gonzalo, DE MENDIZABAL ZALAIKIN, Julen, MINNAAR, Jozeph Leendert, ESTRUGA, Marc
Format:	Patent
Sprache:	eng ; fre
Schlagworte:	ADHESIVES CHEMISTRY COMPOSITIONS BASED THEREON DYES MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONSONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FORELSEWHERE METALLURGY MISCELLANEOUS APPLICATIONS OF MATERIALS MISCELLANEOUS COMPOSITIONS NATURAL RESINS ORGANIC MACROMOLECULAR COMPOUNDS PAINTS POLISHES THEIR PREPARATION OR CHEMICAL WORKING-UP
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Beschreibung
Zusammenfassung:	A nanocrystal composite comprising a plurality of nanocrystals comprising a core comprising a metal or a semiconductive compound or a mixture thereof and at least one ligand, wherein said core is surrounded by at least one ligand, and a polythiourethane matrix, wherein said polythiourethane matrix is formed by thermal or UV induced nucleophilic addition of polyisocyanates having at least two isocyanate groups and polythiols having at least two thiol groups. Composite of the present invention provides improved thermal and photo thermal stability to the nanocrystals. La présente invention concerne un composite de nanocristaux comprenant une pluralité de nanocristaux comprenant un noyau comprenant un métal ou un composé semi-conducteur ou un mélange de ce dernier et d'au moins un ligand, ledit noyau étant entouré d'au moins un ligand, et d'une matrice de polythiouréthane, ladite matrice de polythiouréthane étant formée par addition nucléophile thermiquement induite ou par le rayonnement UV de polyisocyanates ayant au moins deux groupes isocyanate et de polythiols ayant au moins deux groupes thiol. Le composite de la présente invention fournit une stabilité thermique et photothermique améliorées aux nanocristaux.