Restricted Rotation in 9-Phenyl-anthracenes: A Prediction Fulfilled
作者:Kirill Nikitin、Helge Müller-Bunz、Yannick Ortin、Jimmy Muldoon、Michael J. McGlinchey
DOI:10.1021/ol102665y
日期:2011.1.21
The calculated phenyl rotation barrier in 9-phenylanthracene has been reported as similar to 21 kcal mol(-1), but experimental verification of this barrier is limited by its intrinsic symmetry. V-T NMR indicated the barrier to interconversion of the syn (C-2v) and anti (C-2h) rotamers of 9,10-bis(3-fluorophenyl)anthracene to be similar to 21 kcal mol(-1). Likewise, the V-T NMR spectra of 9-(1-naphthyl)-10-phenylanthracene reveal that the rotational barrier of the unsubstituted phenyl ring is at least 21 kcal mol(-1).
ORGANIC ELECTROLUMINESCENT ELEMENT
申请人:NIPPON STEEL & SUMIKIN CHEMICAL CO., LTD.
公开号:EP2388842B1
公开(公告)日:2014-07-23
ORGANIC ELECTROLUMINESCENT DEVICE
申请人:Suda Mitsuru
公开号:US20110272680A1
公开(公告)日:2011-11-10
Disclosed is a useful organic EL device which comprises a phosphorescent light-emitting layer and is endowed with improved luminous efficiency and high driving stability. Also disclosed is a hole-transporting material suitable for use in the phosphorescent light-emitting device. The hole-transporting material is a triptycene derivative which has substituents at the 9- and 10-positions and is substituted with an aromatic group containing at least one diarylamino group (—ArNAr
2
). The organic EL device contains the triptycene derivative in at least one organic layer selected from the group of a phosphorescent light-emitting layer, a hole-transporting layer, an electron-blocking layer, and an exciton-blocking layer. The diarylamino group (—NAr
2
) may be fused to form an aromatic heterocyclic group such as a carbazolyl group.
US8906521B2
申请人:——
公开号:US8906521B2
公开(公告)日:2014-12-09
Nickel Bromide Catalyzed Ligand‐Free and Activator‐less Suzuki Coupling Reactions
Readily available and inexpensive NiBr2 has been used for the first time to accomplish the ligand-free and activator-less catalytic Suzuki coupling of a variety of arylhalides (ca. 60 examples) with several arylboronic acids in high yields under ambient conditions with good functional group tolerance.