Finely particulate functional metal and finely particulate...

Details Finely particulate functional metal and finely particulate... Finely particulate functional metal and finely particulate...

2006-10-17

2006-10-17

Kopec, Mark (Department: 1751)

Compositions

Electrically conductive or emissive compositions

Free metal containing

C252S518100, C252S500000, C252S30140R, C977S813000, C977S840000, C435S320100, C424S009300, C424S009400

Reexamination Certificate

active

07122133

ABSTRACT:
A stabilized dispersion of metal fine particles comprising, fine particles of metal which is obtained by reducing at least one metallic acid or salt thereof selected from the group consisting of haloauric acid, haloplatinic acid, silver nitrate and halorhodic acid by a reducing agent in the aqueous solution of (1) R-PEG-SX [R is a functional group selected from the group consisting of acetal, aldehyde, hydroxyl group, amino group, carboxyl group, active ester group, azide group, biotin group, monosaccharide, oligosaccharide, amino acid, nucleic acid, allyl group, vinyl benzyl group, methacryloyl group and acryloyl group, PEG is —(CH2CH2O)n—, X is H or pyridylthio group] or (2) R-PEG/PAMA (given structural formula A), and said fine particles load a polymer having PEG unit possessing above mentioned functional group on the surface.

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Akiyama et al, “Synthesis of heterobifunctional poly(ethylene glycol) possessing a mercapto group at one end and an acetal group at the other end, and preparation of the functional gold particles,” Polymer Preprints, Japan, 18999, 48(14), pp. 4113-4114.
Bartz et al., “Monothiols derived from glycols as agents for stabilizing gold colloids in water: synthesis, . . . ”, J. Mater. Chem., 1999, 9, pp. 1121-1125.
Wuelfing et al., “Nanometer Gold Clusters Protected by Surface-Bound Monolayers of Thiolated . . . ”, J. Am Chem Soc. 1998, 120, pp. 12696-12697.
Templeton et al., “Monolayer-Protected Cluster Molecules”, Acc. Chem, Res. 2000, 33, pp. 27-36.

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