US 12,415,948 B2
Semiconductor nanoparticle complex dispersion liquid, semiconductor nanoparticle complex, semiconductor nanoparticle complex composition and semiconductor nanoparticle complex cured membrane
Makoto Kido, Tosu (JP); Hirokazu Sasaki, Tosu (JP); Takafumi Moriyama, Tosu (JP); and Yuko Mitsuka, Tosu (JP)
Assigned to SHOEI CHEMICAL INC., Tokyo (JP)
Appl. No. 17/595,923
Filed by SHOEI CHEMICAL INC., Tokyo (JP)
PCT Filed May 29, 2020, PCT No. PCT/JP2020/021464
§ 371(c)(1), (2) Date Nov. 29, 2021,
PCT Pub. No. WO2020/241872, PCT Pub. Date Dec. 3, 2020.
Claims priority of application No. 2019-103239 (JP), filed on May 31, 2019; and application No. 2019-103240 (JP), filed on May 31, 2019.
Prior Publication US 2022/0315834 A1, Oct. 6, 2022
This patent is subject to a terminal disclaimer.
Int. Cl. C09K 11/02 (2006.01); C09D 5/22 (2006.01); C09D 11/037 (2014.01); C09D 11/322 (2014.01); C09D 11/50 (2014.01); C09K 11/08 (2006.01); C09K 11/88 (2006.01); B82Y 20/00 (2011.01); B82Y 40/00 (2011.01); C08K 9/04 (2006.01)
CPC C09K 11/025 (2013.01) [C09D 5/22 (2013.01); C09D 11/037 (2013.01); C09D 11/322 (2013.01); C09D 11/50 (2013.01); C09K 11/0883 (2013.01); C09K 11/883 (2013.01); B82Y 20/00 (2013.01); B82Y 40/00 (2013.01); C08K 9/04 (2013.01); C08K 2201/011 (2013.01)] 19 Claims
 
1. A semiconductor nanoparticle complex dispersion liquid in which a semiconductor nanoparticle complex is dispersed in an organic dispersion medium, wherein
the semiconductor nanoparticle complex is composed of two or more ligands including an aliphatic thiol ligand and a polar ligand, and a semiconductor nanoparticle with the ligands coordinated to a surface thereof;
each ligand is composed of an organic group and a coordinating group;
in the aliphatic thiol ligand, the organic group is an aliphatic hydrocarbon group, and the coordinating group is a mercapto group;
the organic group of the polar ligand includes a hydrophilic functional group;
the coordinating group of the polar ligand is a mercapto group;
a mass ratio of the aliphatic thiol ligand to the polar ligand (aliphatic thiol ligand/polar ligand) is 0.05 to 1.00; and
an SP value of the organic dispersion medium is 8.5 or more.