US 2014/0209867 A1 · Sulfonyl Group-Contained Compound and Organic Electroluminescent Device Using Sulfonyl Group-Contained Compound and Preparation Method Thereof

Abstract

The present invention provides a sulfonyl group-contained compound, organic electroluminescent device using the same, and a preparation method thereof. The sulfonyl group-contained compound is presented by the following formula: in which R1, R2, and R3 are alkyl groups, aromatic ring groups, —CN or —OCH3 and R1, R2, and R3 are linked in position 2 or 3 of benzene ring. The sulfonyl group-contained compound of the present invention combines three thiofluorenes to form a novel sulfonyl group-contained compound with dendrimer structure, which combines properties of electron affinity and electron transportation of thiofluorene and also combines dimension property of dendrimer structure. When the sulfonyl group-contained compound is used in a light-emitting layer or an electron transport layer of an organic electroluminescent device, the efficiency and the lifespan of the organic electroluminescent device can be increased.

Claims11

Dependent claims

A sulfonyl group-contained compound, represented by the following formula:

in which R1, R2, and R3 are an alkyl group, an aromatic ring group, a heterocyclic ring group, —CN or —OCH3;
and R1, R2, and R3 are linked in position 2 or 3 of the benzene ring.

An organic electroluminescent device using sulfonyl group-contained compound, comprising:

a transparent substrate, an anode arranged on the transparent substrate, a hole transporting layer arranged on the anode, a light-emitting layer arranged on the hole transporting layer, an electron transporting layer arranged on the light-emitting layer, and a cathode arranged on the electron transporting layer;
wherein at least one of the electron transport layer and the light-emitting layer comprises the sulfonyl group-contained compound.

Dependencies are inferred from the claim text.

Facts

Application

13/823,751Filed 29 Jan 2013

Priority

CN 201310031685.125 Jan 2013

Published

31 Jul 2014

Term ends

Not estimatedThe source records don’t support an estimate.

Classification10 codes

H10K 85/6576
Polycyclic condensed heteroaromatic hydrocarbons: comprising only sulfur in the heteroaromatic polycondensed ring system, e.g. benzothiophene
C07D 495/14
In which the condensed system contains three hetero rings: ortho-condensed systems
H05B 33/20
Light sources with substantially two-dimensional [2D] radiating surfaces: characterised by the chemical or physical composition or the arrangement…
H10K 85/654
Aromatic compounds comprising a hetero atom: comprising only nitrogen as heteroatom

Sulfonyl Group-Contained Compound and Organic Electroluminescent Device Using Sulfonyl Group-Contained Compound and Preparation Method Thereof

Life of this patent

Sulfonyl Group-Contained Compound and Organic Electroluminescent Device Using Sulfonyl Group-Contained Compound and Preparation Method Thereof

Life of this patent

Abstract

Claims11