Abstract:
The invention provides 1,3,5-tris(arylamino)benzenes represented by the general formula (I) wherein A is naphthyl, anthryl, phenanthryl, biphenylyl or terphenylyl group, and R is alkyl having 1-6 carbon atoms or cycloalkyl group having five or six carbon atoms. The 1,3,5-tris(arylamino)benzenes have oxidation potentials in the range of about 0.5-0.6V, excellent reversibility in oxidation-reduction process and high glass transition temperatures and in addition, they are capable of forming stable and durable amorphous film useful as high performance organic semiconductors at normal temperatures or higher with no aid of binder resins, that is, by themselves.
Abstract:
Novel trisarylaminobenzene derivatives are represented by the formula:
wherein Φ₁₁, Φ₂₁, and Φ₃₁ are independently divalent aromatic ring residues, R₁₁, R₂₁, and R₃₁ are independently groups represented by -NΦ₀₁Φ₀₂, -NHΦ₀₁, -NR₀₁Φ₀₁, -Φ₀₁, -OΦ₀₁ or -SΦ₀₁ wherein each of Φ₀₁ and Φ₀₂ is a monovalent aromatic ring residue, and R₀₁ is an alkyl group, at least one of R₁₁, R₂₁, and R₃₁ being a group represented by -NΦ₀₁Φ₀₂, -NHΦ₀₁ or -NR₀₁Φ₀₁, and A₁₂, A₂₂, and A₃₂ are independently aromatic residues, alkyl groups or hydrogen. An organic electroluminescent element which uses the compound in an organic compound layer, especially in a hole injection transport layer provides uniform plane light emission and is durable enough to maintain luminance.
Abstract:
An organic electroluminescence device comprises an organic emitting layer 3 and a hole transport layer 4 laminated with each other and arranged between a cathode 1 and an anode 2, is characterised in that the hole transport layer is made of tris-phenothiazinyltriphenylamine or tris-phenoxazinyl-triphenylamine derivative. The hole transport layer has high heat-resistance and high conductivity to improve the durability and emits light at a high luminance and a high efficiency upon application of a low voltage.
Abstract:
A 1,3,5-tris(arylamino)benzene represented by the general formula (I): (I) wherein A represents naphthyl, anthryl, phenanthryl, biphenylyl, or terphenylyl and R represents C1-6 alkyl or C5-6 cycloalkyl. This 1,3,5-tris(arylamino)benzene has an oxidation potential of about 0.5 to 0.6 V and has excellent reversibility in oxidation/reduction processes. It can form an amorphous film which has a high glass transition temperature and which in itself, i.e., without the aid of a binder resin, is stable at ordinary or a higher temperature. A high-performance organic semiconductor film can be formed which is stable and highly durable and consists of the amorphous film.
Abstract:
The triphenylamine having the general formula (I) wherein A is a 1-naphthyl group or a 2-naphthyl group. It has a glass transition temperature as high as 100°C and yet it remains amorphous stably. Besides, it has good solubility in many organic solvents.
Abstract:
An organic electroluminescence device comprises an organic emitting layer 3 and a hole transport layer 4 laminated with each other and arranged between a cathode 1 and an anode 2, is characterised in that the hole transport layer is made of tris-phenothiazinyltriphenylamine or tris-phenoxazinyl-triphenylamine derivative. The hole transport layer has high heat-resistance and high conductivity to improve the durability and emits light at a high luminance and a high efficiency upon application of a low voltage.
Abstract:
A 1,3,5-tris(arylamino)benzene represented by the general formula (I): (I) wherein A represents naphthyl, anthryl, phenanthryl, biphenylyl, or terphenylyl and R represents C1-6 alkyl or C5-6 cycloalkyl. This 1,3,5-tris(arylamino)benzene has an oxidation potential of about 0.5 to 0.6 V and has excellent reversibility in oxidation/reduction processes. It can form an amorphous film which has a high glass transition temperature and which in itself, i.e., without the aid of a binder resin, is stable at ordinary or a higher temperature. A high-performance organic semiconductor film can be formed which is stable and highly durable and consists of the amorphous film.
Abstract:
Novel triphenylamines represented by the general formula (I) [wherein A is 1-naphthyl or 2-naphthyl]. These compounds exhibit stable amorphous properties in spite of their exhibiting grass transition temperatures of 100 DEG C or above, and are excellent in solubilities in organic solvents.