Effects of Additional Linkers in Biphenyl-4,4‘-dinitrene on the Low-Lying Singlet−Triplet Energy Gap and Zero-Field Splitting
摘要:
Perturbation effects of additional linkers on the spin-spin coupling in biphenyl-4,4'-dinitrene (1) were examined by introducing a linking group between 2- and 2'-positions of 1. Five different doubly linked systems showed triplet ESR spectra corresponding to quinonoid dinitrenes. Curie law analyses suggested that all those tripler states were thermally excited triplet states. In addition, the singlet-tripler energy gaps, which were determined by the Curie law analyses, were well, correlated with their corresponding zero-field-splitting (zfs) D values. The result could be explained by the stability of dinitrene character which is estimated from the resonance energy of the intervening pi-system. Our semiempirical molecular orbital calculations supported the experimental correlation between the singlet-triplet energy gap and the zfs D value.
[EN] ORGANOMETALLIC COMPLEX AND ORGANIC LIGHT-EMITTING ELEMENT USING THE COMPLEX<br/>[FR] COMPLEXE ORGANOMÉTALLIQUE ET ÉLÉMENT ÉLECTROLUMINESCENT ORGANIQUE UTILISANT LEDIT COMPLEXE
申请人:CANON KK
公开号:WO2014112657A1
公开(公告)日:2014-07-24
Provided is an organic light-emitting element having high light-emitting efficiency and a long element lifetime, the organic light-emitting element including an anode, a cathode, and an organic compound layer placed between the anode and the cathode, in which: the organic compound layer includes an emission layer; the emission layer includes a host and a guest; the host is an aromatic hydrocarbon compound; the guest is an iridium complex of a specific structure; and a content of the host is 50 wt% or more with reference to the total amount of the constituent materials for the emission layer.
AROMATIC AMINE DERIVATIVES AND ELECTROLUMINESCENCE DEVICE USING THE SAME
申请人:Kawamura Masahiro
公开号:US20070029927A1
公开(公告)日:2007-02-08
An aromatic amine derivative with a specific structure and an organic electroluminescence device which comprises at least one organic thin film layer comprising a light emitting layer sandwiched between a pair of electrode consisting of an anode and a cathode, wherein at least one of the organic thin film layer comprises the aromatic amine derivative singly or as its mixture component. The organic electroluminescence device which exhibits an enhanced current efficiency of light emission and emits blue light with a prolonged lifetime is realized.
[EN] NOVEL m-TERPHENYL COMPOUND AND ORGANIC LIGHT EMITTING DEVICE INCLUDING THE SAME<br/>[FR] NOUVEAU COMPOSÉ M-TERPHÉNYLE ET DISPOSITIF ÉLECTROLUMINESCENT ORGANIQUE LE CONTENANT
申请人:CANON KK
公开号:WO2011132624A1
公开(公告)日:2011-10-27
An organic light emitting device which includes a m-terphenyl compound having a high T1 energy is provided. In addition, a novel m-terphenyl compound is provided.
AROMATIC AMINE DERIVATIVE AND ORGANIC ELECTROLUMINESCENCE DEVICE MAKING USE OF THE SAME
申请人:IDEMITSU KOSAN CO., LTD.
公开号:EP1914222A1
公开(公告)日:2008-04-23
An aromatic amine derivative with a specific structure snd an organic electroluminescence device which comprises at least one organic thin film layer comprising a light emitting layer sandwiched between a pair of electrode consisting of an anode and a cathode, wherein at least one of the organic thin film layer comprises the aromatic amine derivative singly or as its mixture component. The organic electroluminescence device which exhibits an enhanced current efficiency of light emission and emits blue light with a prolonged lifetime is realized.
An organic light-emitting device includes: a first electrode; a second electrode disposed opposite to the first electrode; an emission layer between the first electrode and the second electrode; and a hole transport region between the first electrode and the emission layer, wherein the emission layer includes an organometallic compound of Formula 1 as represented in the specification, and the hole transport region includes a first compound of Formula 2A or Formula 2B as represented in the specification.