Daicel Corporation

Hokkaido University

University Public Corporation Osaka

Yuto Makino

Ming Liu

Masahiro Nishikawa

Tomoaki Mahiko

Akihiko Tsurui

Keiji Sasaki

Yoshiyuki Murai

Takudo Wada

Hajime Ishihara

The present invention is to provide a method for producing nanodiamonds doped with a Group 14 element, the method comprising: detonating by exploding an explosive composition containing at least one explosive and at least one Group 14 element compound in a sealed container to obtain nanodiamonds doped with at least one Group 14 element selected from the group consisting of Si, Ge, Sn, and Pb, and removing the Group 14 element and/or oxide thereof by subjecting the nanodiamonds doped with a Group 14 element to an alkali treatment.

Method for producing nanodiamonds doped with group 14 element, and method for purifying same

A particle discrimination mechanism includes: a channel in which a plurality of first nanoparticles each including an absorber having a predetermined absorption level and a plurality of second nanoparticles each of which does not include the absorber having the predetermined absorption level exist, the channel including a first input section and a second input section; a laser that outputs first light, which is absorbed by the absorber having the predetermined absorption level, in a direction from the first input section toward the second input section; a laser that outputs second light, which is not absorbed by the absorber having the predetermined absorption level but is scattered or absorbed by the second nanoparticles, in a direction from the second input section toward the first input section.

Particle discrimination mechanism

The present invention is to provide a heteroatom-doped nanodiamond, the heteroatom-doped nanodiamond being doped with at least one heteroatom, the heteroatom-doped nanodiamond satisfying criteria (i) and/or (ii) below: (i) a BET specific surface area being from 20 to 900 m/g, and (ii) an average size of primary particles being from 2 to 70 nm.

Heteroatom-doped nanodiamond

There are provided a surface-modified nanodiamond exhibiting easy dispersibility in an organic solvent, an organic solvent dispersion thereof, and a method for producing the surface-modified nanodiamond. The surface-modified nanodiamond according to the present invention includes a nanodiamond, and a group bound to a particulate surface of the nanodiamond and represented by formula ():&#x2014;NHCOR &#x2003;&#x2003;() R is an organic group having a carbon atom at a binding site with a neighboring carbonyl carbon atom indicated in the formula; and the left end, in the formula, of the group serves to form bonding to the nanodiamond. The nanodiamond is preferably a detonation nanodiamond or a high-temperature high-pressure nanodiamond.

Surface-modified nanodiamond, organic solvent dispersion thereof, and method for producing surface-modified nanodiamond

Growing community of inventors

Tokyo, Japan

Yuto Makino