Surface-modified microparticles and method for producing same

Abstract

Provided are fine particles having, as a surface modification group, a polyglycerol chain with a carboxy group introduced thereto, where the carboxy group is not easily removed by hydrolysis. The surface-modified fine particles of the present disclosure contain fine particles and a surface modification group bonded to a surface of the fine particles, wherein the surface modification group has a structure in which at least one of CH2OH groups of a (poly)glycerol chain is replaced by a carboxy group. The surface modification group is, for example, a group having a (poly)glycerol chain, and a group represented by Formula (1) and bonded to the chain and/or a group represented by Formula (2) and bonded to the chain.

Dependencies are inferred from the claim text.