A low-cost phenylbenzoimidazole containing electron transport material for efficient green phosphorescent and thermally activated delayed fluorescent OLEDs
Method for Synthesizing 1,3,5-Tri-(N-Phenylbenzimidazolyl) Benzene
申请人:Cai Lifei
公开号:US20130102788A1
公开(公告)日:2013-04-25
The present invention relates to efficient synthetic method of 1,3,5-tris (N-Phenylbenzimidazole) Benzene and pertains to the field of synthesis of organic light-emitting materials. The method and process of the patent are as following: 1,3,5-tris (N-Phenyl-N Phenylammonium) Benzamide is treated by shrinking agent but no high temperature required, and then high purity product can be reached after raw material dissolved. The reaction only takes a few minutes and through recrystallization the purity can be over 99%, and then the material with stable crystal phase reached after sublimation step. The method introduced by the present patent is easy to operate, and with high in yield and purity, which adapt industrial production and has important significance for the industrialization.
Methods of making tris(N-aryl benzimidazoles)benzenes and their use in electronic devices
申请人:E. I. du Pont de Nemours and Company
公开号:US07273939B1
公开(公告)日:2007-09-25
Provided are methods for preparing a compound of Formula I:
where the method comprises the steps of:
contacting a compound of Formula II:
with 1,3,5-benzene-tricarbonyl chloride in the presence of a polar aprotic solvent to form an amide adduct; and subsequently condensing the amide with a proximate anilino group present in the adduct in the presence of a condensing agent to form a compound of Formula I wherein R1, R2, Ar, m, p, and t are as defined in the specification.
Novel multimeric molecules, the preparation method thereof and use of same for the preparation of medicaments
申请人:Guichard Roger Gilles Francois
公开号:US20060035839A1
公开(公告)日:2006-02-16
The invention relates to a multimeric molecule which can imitate a natural multimeric proteinaceous ligand. The invention also relates to a multimeric molecule as defined above which is characterised in that it has the following general formula: A-X
n
, wherein: n is equal to 3, 4, 5 or 6; A denotes a chemical group which is functionalised by at least three amine functions or COOH functions; and X denotes a D, B-D or B(D)-D′ group, in which B is a spacer and D and D′ are peptides or pseudopeptides corresponding to a sequence which is derived from the ligand and selected from residual matter forming the interface with the receptor and which can interact with the receptor.
A low-cost phenylbenzoimidazole containing electron transport material for efficient green phosphorescent and thermally activated delayed fluorescent OLEDs
A new electron-transport iTPBI-CN material synthesized through a simple low-cost reaction exhibited a much higher efficiency than commercial TPBI in green OLEDs.