Patent ID: 7241814

Claim:
A method for preparation of monodispersed fine particles of metal comprising, reducing metallic ions by means of a reducing agent, wherein the reducing agent is a hydrophilic micelle having polysilane, said hydrophilic micelle being obtained from a block copolymer composed of a hydrophilic polymer and a polysilane, said polysilane being represented by general formula P-1 wherein said polysilane is disposed on an inside of said micelle, and wherein a shell part of the micelle is formed by cross-linking the hydrophilic polymer, wherein, R 1 , R 2 , R 3 , and R 4 are the group selected independently from the group consisting of alkyl group of carbon number 10 or less and aryl group, m is the degree of polymerization of the polysilane, n is the degree of polymerization of a monomer component having a cross-linking hydrophilic group of the block copolymer, and n is such that the range of the molecular weight of the block polymer is Mn=7000-30000 wherein the ratio of n/m is from 10 to 20, and the ratio of m/n is from 0.05 to 0.10.