Organoelectroluminescent element, and light emission device, display device, and illumination device in which said organoelectroluminescent element is used
摘要
說明書
The total number of aryl rings in General Formula Tp-1 is preferably 2 to 8 and more preferably 3 to 5. Within this range, a good-quality amorphous thin-film can be formed, there will be good solubility in solvents, and sublimation performance and vapor deposition suitability will also be good.
R12 to R23 preferably have each independently a total carbon number of 20 to 50, and a total carbon number of 20 to 36 is more preferable. Within this range, a good-quality amorphous thin film can be farmed, and solubility in solvents, sublimation [performance], and vapor deposition suitability will be favorable.
In one mode of the present invention, the triphenylene derivative expressed by General Formula Tp-1 above is preferably a triphenylene derivative expressed by General Formula Tp-2 below:
(In General Formula Tp-2, the plurality of Ar1 [groups] are the same, and are [each] a phenyl group, a fluorenyl group, a naphthyl group, or a triphenylenyl group that may be substituted with a cyano group, an alkyl group, a phenyl group, a fluorenyl group, a naphthyl group, or a triphenylenyl group, or a group that is a combination of these.)
The alkyl group or the phenyl group, fluorenyl group, naphthyl group, or triphenylenyl group that may be substituted with an alkyl group, a phenyl group, a fluorenyl group, a naphthyl group, or a triphenylenyl group represented by Ar′ is defined the same as what was listed for R12 to R23, and preferred options are also the same.
