申请人:JNC CORPORATION
公开号:US20160118598A1
公开(公告)日:2016-04-28
The invention concerns a compound represented by formula (1) below, and an organic EL device using the same. The compound of the invention is useful as an electron transport material that contributes to improvement in service life prolongation, reduction of driving voltage, achievement of high efficiency and so forth, above all, improvement in achieving high efficiency, and can provide an excellent organic EL device:
wherein, Ar is an m-valent group derived from aromatic hydrocarbon or an aromatic heterocycle;
X
1
to X
6
are ═CR
1
— or ═N—, at least two of X
1
to X
6
is ═CR
1
—, R
1
in two of ═CR
1
— is a bonding hand to be bonded with Ar or an azole ring, and R
1
in ═CR
1
— other than the above is hydrogen or alkyl having 1 to 4 carbons;
Y is —O— or —S—; at least one of hydrogen in an azole ring may be replaced by alkyl, phenyl or naphthyl; m is an integer from 2 to 4; and at least one of hydrogen in each ring and alkyl in the formula may be replaced by deuterium.
该发明涉及下式(1)所表示的化合物以及使用该化合物的有机EL器件。该发明的化合物作为电子传输材料非常有用,有助于延长使用寿命,降低驱动电压,提高效率等等,特别是在实现高效率方面有很大的改进,并且可以提供优秀的有机EL器件:其中,Ar是从芳香族碳氢化合物或芳香族杂环衍生的m价基团;X1到X6是═CR1—或═N—,其中至少有两个X1到X6是═CR1—,在═CR1—中的两个R1是用于与Ar或唑环结合的键手,而═CR1—中除上述情况外的R1是氢或具有1至4个碳的烷基;Y是—O—或—S—;唑环中的氢可以被烷基、苯基或萘基替换;m是从2到4的整数;式中每个环中的氢和烷基中的至少一个可以被氘替换。