Semiconductor nanoparticle complex, semiconductor nanoparticle complex dispersion liquid, semiconductor nanoparticle complex composition, and semiconductor nanoparticle complex cured film

Abstract

Provided is a semiconductor nanoparticle complex in which a ligand is coordinated to a surface of a semiconductor nanoparticle. The semiconductor nanoparticle is a core-shell type semiconductor nanoparticle including a core containing In and P and one or more layers of shells, wherein at least one of the shells is formed of ZnSe. The ligand includes one or more kinds of mercapto fatty acid esters represented by the following general formula (1): HS—R1—COO—R2 (1). The mercapto fatty acid ester has an SP value of 9.20 or more. The mercapto fatty acid ester has a molecular weight of 700 or less, and the average SP value of the entire ligand is 9.10 to 11.00. The present invention provides a semiconductor nanoparticle complex dispersible at a high mass fraction in a polar dispersion medium while keeping high fluorescence quantum yield (QY) of semiconductor nanoparticles.

Dependencies are inferred from the claim text.