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NANOSKALIGE TEILCHEN ENTHALTENDE KOMPOSITMATERIALIEN, VERFAHREN ZU DEREN HERSTELLUNG UND DEREN VERWENDUNG FUER OPTISCHE ELEMENTE.

Composites contg. nano-scale particles, useful for optical components - produced by incorporating sol of pptd. metal antimonide, arsenide, chalcide, halide or phosphide in polymer matrix
 
: Spanhel, L.; Arpac, E.A.; Nass, R.; Schmidt, H.

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DE 1991-4133621 A: 19911010
EP 1992-920737 A: 19921009
WO 1992-EP2327 W: 19921009
DE 59207816 CE: 19970102
C08F0002
German
Patent, Electronic Publication
Fraunhofer ISC ()

Abstract
WO 9307179 A UPAB: 19931115 Prodn. of composites (I) contg. nano-scale particles comprises reacting (a) a soluble cpd. of a Gp. 6-15 metal or lanthanide in organic solvent with (b) a pptg. reagent to form antimonides, arsenides, chalcogenides, halides or phosphides of metal (a) in the presence of (c) a bifunctional cpd. with at least one electron-pair donor gp. and at least one gp. which can be converted into an organic or inorganic network by polymerisation or polycondensation, mixing the resulting stabilised sol contg. nano-scale particles with (d) a thermally or photochemically curable or polymerisable cpd. and (e) a polymerisation initiator, hydrolysing and polycondensing any gps. which can be converted into an inorganic network, and curing the material thermally or photochemically. Also claimed are composites (I) obtd. by this process, pref. in the form of coatings or moulded prods. USE/ADVANTAGE - Transparent composites (I) are useful for optical components (claimed). (I) contain particles of mean size 0.5-20nm (clusters), dispersed in a polymer matrix, with cluster size and distribution determd. by appropriate choice of reactants and conditions. (I) can be structured, e.g. by laser writing or embossing; applications include, e.g., optical filters, waveguides, signal processing, computation, frequency doubling, laser focussing, phase conjugation, holograph components, photovoltaic cells, solar cells, etc.

: http://publica.fraunhofer.de/documents/N-44279.html