| abstract |
The light emitting device of the present invention relates tona light emitting device which is characterized in that it isna device with an emissive substance present between an anodenand cathode, and which emits light by means of electricalnenergy, and said device has a least one type of compoundndenoted by (a) to (d) below.n (a) A compound having a plurality of 1,7-phenanthrolinenskeletal structures (b) A benzoquinoline derivative (c) A spiro compound represented by general formula (1)n nA 1 and A 2 are each selected from single bonds, substituted ornunsubstituted alkyl chains, ether chains, thioether chains,nketone chains and substituted or unsubstituted amino chains.nHowever, A 1 ≠ A 2 . Z represents carbon or silicon. R 1 to R 16 nare each selected from hydrogen, alkyl group, cycloalkylngroup, aralkyl group, alkenyl group, cycloalkenyl group,nalkynyl group, hydroxyl group, mercapto group, alkoxy group,nalkylthio group, aryl ether group, aryl thioether group, arylngroup, heterocyclic group, halogen, haloalkane, haloalkene, nhaloalkyne, cyano group, aldehyde group, carbonyl group,ncarboxyl group, ester group, carbamoyl group, amino group,nnitro group, silyl group, siloxanyl group and a cyclicnstructure formed with an adjacent substituent. (d) A tetraphenylmethane derivative represented by generalnformula (2)n nR 17 to R 36 are each selected from hydrogen, alkyl group,ncycloalkyl group, aralkyl group, alkenyl group, cycloalkenylngroup, alkynyl group, hydroxyl group, mercapto group, alkoxyngroup, alkylthio group, aryl ether group, aryl thioetherngroup, aryl group, heterocyclic group, halogen, haloalkane,nhaloalkene, haloalkyne, cyano group, aldehyde group, carbonylngroup, carboxyl group, ester group, carbamoyl group, aminongroup, nitro group, silyl group, siloxanyl group and a cyclicnstructure formed with an adjacent substituent. However, atnleast one of R 17 to R 36 is selected from substituentsnrepresented by general formula (3).n ―X―Ar nX is a single bond or is selected from the following, and Arndenotes a condensed aromatic ring or heteroaromatic ring. Innthe case where X is phosphorus oxide, then Ar represents annaromatic hydrocarbon or heteroaromatic ring. n n n is an natural number. |