Patent ID: 8088437

Claim:
A method for producing a silver-containing nanostructure comprising: dispersing a polymeric compound (X) in which a hydrophilic segment (b) having a number average molecular weight within a range from 300 to 150,000 is bonded to a branched polyalkyleneimine chain (a) having a degree of branching within a range of (1 to 49)/100 when expressed as a molar ratio of (tertiary amine)/(total amines) and also having a number average molecular weight within a range from 1,000 to 150,000, in a medium; adding silver oxide (Y) thereto; adding ammonia and a reducing agent (Z2) thereto; and carrying out a reduction reaction of the silver oxide (Y) at a temperature of 25 to 80° C., thereby obtaining a silver-containing nanostructure having a polygonal shape.