Patent ID: 9601705
Date: 2017-03-21
CPC Classifications: C09K,H01L,H05B

Claim:
1. A material for organic electroluminescence element, comprising: a phosphorescent compound; and a discotic liquid-crystalline host compound, wherein the phosphorescent compound has an aspect ratio of molecule core diameter to molecule core thickness (molecule core diameter/molecule core thickness) of at least 3, and wherein a size ratio of a molecular radius of the phosphorescent compound to a molecular radius of the discotic liquid-crystalline host compound (molecular radius of the phosphorescent compound/molecular radius of the discotic liquid-crystalline host compound) is 0.8 to 1.2, wherein the discotic liquid-crystalline host compound is capable of developing a discotic-nematic liquid-crystalline phase; and wherein the discotic liquid-crystalline host compound is represented by General Formula (1): wherein H represents a mother nucleus portion of liquid crystal; L represents a divalent linking group; R and wherein the mother nucleus portion of liquid crystal is represented by one of General Formula (H-1) to (H-3) wherein in General Formula (H-1), Z wherein in General Formula (H-2), Z wherein in General Formula (H-3), Z