SURFACE-MODIFIED NANODIAMOND AND DISPERSION AND COMPOSITE MATERIAL CONTAINING SURFACE-MODIFIED NANODIAMOND

摘要

Provided is a surface-modified nanodiamond that has high dispersibility in an organic solvent or in a resin and that can maintain the characteristics described above even in a high-temperature environment of 200°C or higher. The surface-modified nanodiamond according to an embodiment of the present invention has a structure in which a surface of a nanodiamond particle is modified by a group represented by Formula (1) below. In the formula, R¹ to R⁴ are the same or different and each represent an aliphatic hydrocarbon group having from 1 to 25 carbons. Note that at least one of R¹ to R⁴ is an aliphatic hydrocarbon group having from 10 to 25 carbons. Furthermore, an atomic bond of the carbon atom in the formula bonds to the surface of the nanodiamond particle.