Functionalized nanoparticles

C - Chemistry – Metallurgy – 08 – K

Patent

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C08K 9/06 (2006.01) C08K 3/22 (2006.01) C08K 3/36 (2006.01) C08K 5/00 (2006.01) C08K 7/00 (2006.01) C09B 67/00 (2006.01) C09B 69/00 (2006.01) C09C 1/30 (2006.01) C09C 1/40 (2006.01) C09C 3/12 (2006.01)

Patent

CA 2608576

The present invention discloses functionalized nanoparticles comprising on the surface a covalently bound radical of formula (1), wherein the nanoparticles are SiO2, Al2O3 or mixed SiO2 and Al2O3 nanoparticles, R1 and R2 are independently of each other hydrogen, nanoparticle surface-O-, or a substituent, n is 1 , 2, 3, 4, 5, 6, 7 or 8, and Y is a radical of formula -B1- D1 (2a), wherein B1 is the direct bond or a bridge member, and D1 is a radical of a cationic dye, a radical of a phthalocyanine dye which carries no water- solubilizing group, or a radical of a fluorescent dye selected from the group consisting of coumarins, benzocoumarins, xanthenes, benzo[a]xanthenes, benzo[b]xanthenes, benzo[c]xanthenes, phenoxazines, benzo[a]phenoxazines, benzo[b]phenoxazines, benzo[c]phenoxazines, napthalimides, naphtholactams, azlactones, methines, oxazines, thiazines, diketopyrrolopyrroles, quinacridones, benzoxanthenes, thio-epindolines, lactamimides, diphenylmaleimides, acetoacetamides, imidazothiazines, benzanthrones, phthalimides, benzotriazoles, pyrimidines, pyrazines and triazines, or Y is a radical of formula -B2 D2 (2b), wherein B2 is an organic radical comprising at least one group having a negative charge, and D2 is a cationic dye selected from the group consisting of monoazo, disazo, polyazo, methine, azamethine, diphenylmethane, triphenylmethane, triaminotriaryl methane, azine, oxazine, cyanine and anthraquinone dyes.

La présente invention concerne des nanoparticules fonctionnalisées comprenant sur la surface de la radical lié de manière covalente représentée par la formule (1), ces nanoparticules étant des nanoparticules SiO2, Al2O3 ou des nanoparticules SiO2 et Al2O3 mélangées, R1 et R2 sont hydrogène indépendants entre eux, O de surface de nanoparticule ou un substituant, n est 1 , 2, 3, 4, 5, 6, 7 ou 8, and Y est un radical représenté par la formule-B1-D1 (2a), dans laquelle B1 est la liaison directe ou un élément de pontage et D1 est un radical ou un colorant cationique, un radical de colorant phthalocyanine qui ne porte pas de groupe soluble visant l'eau, où est un radical de colorant fluorescent sélectionné dans le groupe constitué de coumarins, benzocoumarins, xanthènes, benzo[a]xanthènes, benzo[b]xanthènes, benzo[c]xanthènes, phénoxazines, benzo[a]phénoxazines, benzo[b]phénoxazines, benzo[c]phénoxazines, napthalimides, naphtholactams, azlactones, méthines, oxazines, thiazines, diketopyrrolopyrroles, quinacridones, benzoxanthènes, thio-epindolines, lactamimides, diphénylmaleimides, acétoacétamides, imidazothiazines, benzanthrones, phthalimides, benzotriazoles, pyrimidines, pyrazines and triazines, ou Y est un radical représenté par la formule-B2 D2 (2b), dans laquelle B2 est un radical organique comprenant au moins un groupe possédant une charge négative et D2 est étaient colorant cationique sélectionnés le groupe constitué des colorants monoazo, disazo, polyazo, méthine, azaméthine, diphénylméthane, triphénylmethane, triaminotriaryle méthane, azine, oxazine, cyanine et anthraquinone.

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