A metal chelate compound of the formula
Ln-M+n (I)
wherein M represents a metal; n is an integer, or number of from 1 to 3; and L is a ligand of
wherein Ar is aryl; X is selected from the group consisting of oxygen, sulfur, and selenium; N is nitrogen; O is oxygen; and Z is a suitable aromatic component.
式中的金属螯合物
Ln-M+n (I)
其中 M 代表金属;n 是整数,或 1 至 3 的数字;L 是下列配体的配体
其中 Ar 是芳基;X 选自由氧、硫和硒组成的组;N 是氮;O 是氧;Z 是合适的芳香族组分。
US5925472A
申请人:——
公开号:US5925472A
公开(公告)日:1999-07-20
Synthesis, oxidation and dehydrogenation of cyclic N,O- and N,S-acetals. Part III. Transformation of N,O-acetals: 3-acyl-1,3,4-oxadiazolines
作者:László Somogyi
DOI:10.1002/jhet.5570440603
日期:2007.11
Various aldehyde and ketone acylhydrazones are synthesized and, under acylating conditions, cyclized into 3-acyl-1,3,4-oxadiazolines. The scope and limitations of these cyclizations and the possible side reactions (e.g. formation of the open-chain N,O-acylhydrazinocarbinols) are dissected. For the first time, simple, convenient and efficient dehydrogenations of 3-acyl-1,3,4-oxadiazolines to oxadiazoles
Phosphorescence Color Tuning of Oxadiazole-Based Iridium(III) Complexes for Organic Light Emitting Diode
作者:Hye Rim Park、Bo Young Kim、Young Kwan Kim、Yunkyoung Ha
DOI:10.1166/jnn.2012.6301
日期:2012.7.1
The new heteroleptic iridium complexes bearing 2-(5-phenyl-1,3,4-oxadiazol-2-yl)phenolate (ODZ), were synthesized and characterized for application to organic light-emitting diodes (OLEDs). As main ligands (C∧N), the anions of 2-phenylpyridine (ppy), 2-phenylquinoline (pq) and 2-(2,4-difluorophenyl)pyridine (F2-ppy) were chelated to the iridium center and 2-(5-phenyl-1,3,4- oxadiazol-2-yl)phenolate (ODZ) was introduced as an ancillary ligand for luminescence modulation of their iridium complexes. We expected that the relative energy levels of the main and ancillary ligands in the complexes could lead to emission color tuning and luminous efficiency improvement by possible inter-ligand energy transfer (ILET). The photoabsorption, photoluminescence and electroluminescence of the complexes were studied. Ir(F2-ppy)2(ODZ), Ir(ppy)2(ODZ) and Ir(pq)2(ODZ) exhibited the photoluminescence maxima between 505–610 nm at room temperature in CH2Cl2, depending on both main and ancillary ligands. The longer π conjugation in the cyclometallating pq ligands leads to the bathochromic shift in luminescence of their iridium complexes. The electroluminescent properties of the complexes were influenced by ILET.