Dic Corporation

Masafumi Uota

Ren-Hua Jin

Yoshiyuki Sano

Kaori Kawamura

Hiroshi Yonehara

Nobuhiro Sekine

Provided is a composite including copper nanoparticles or copper(I) oxide nanoparticles and a thioether-containing organic compound represented by X(OCHCHR)OCHCH(OH)CHSZ [X represents an alkyl group; Rrepresents a hydrogen atom or a methyl group; n represents an integer of 2 to 100; Ris independent between repeating units and may be the same or different; and Z represents an alkyl group, an allyl group, an aryl group, an arylalkyl group, &#x2014;R&#x2014;OH, &#x2014;R&#x2014;NHR, or &#x2014;R&#x2014;(COR)(where Rrepresents a saturated hydrocarbon group; Rrepresents a hydrogen atom, an acyl group, an alkoxycarbonyl group, or a benzyloxycarbonyl group; Rrepresents a hydroxy group, an alkyl group, or an alkoxy group; and m represents 1 to 3)]. Provided is a method for producing a composite of an organic compound and copper nanoparticles or a composite of an organic compound and copper(I) oxide nanoparticles, the method including reducing a copper compound in the presence of a thioether-containing organic compound represented by the general formula (1) above.

Composite of organic compound and copper nanoparticles, composite of organic compound and copper(I) oxide nanoparticles, and methods for producing the composites

Provided are a composite of nanoparticles of a metal such as gold, silver, a platinum metal, or copper, and a polymer, the composite allowing formation of a metal film having a sufficiently low resistivity in terms of practicality simply by drying at room temperature without requiring any special heating-baking step or any step of removing a protective agent with a solvent; a dispersion liquid of the composite; methods for producing the foregoing; and a plastic substrate formed from the dispersion liquid. The composite comprises a (meth)acrylic-based copolymer having, as side chains, a polyethylene glycol chain and a phosphate residue represented by &#x2014;OP(O)(OH)2 and having, at at least one end of the molecular chain, &#x2014;SR (where R represents an alkyl group or the like).

Metal-nanoparticle-containing composite, dispersion liquid thereof, and methods for producing the metal-nanoparticle-containing composite and the dispersion liquid

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Sakura, Japan

Masafumi Uota