Preparation and application of N,N'-di(triphenylamine group) fluorene diamine hole injection material

A technology of hole injection layer and phenyl group, which is applied in the field of N, can solve problems such as the influence of hole injection ability, the high price of PEDOT, the reduction of the barrier between the anode and the hole transport layer, and the driving voltage of the device.
CN101671256AInactive Publication Date: 2010-03-17HONG KONG BAPTIST UNIV
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
HONG KONG BAPTIST UNIV
Publication Date
2010-03-17
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention relates to an N,N'-di(triphenylamine group) fluorene diamine derivative with a general formula (I), wherein R1 and R2 refer to C1-C20 alkyl, phenyl or benzyl; and R1 and R2 can be same or different. The invention also relates to a method for preparing the compound, application of the compound as a hole injection layer material for an organic electroluminescent device and the organicelectroluminescent device containing the organic hole injection material. The compound is applied to an injection layer of the organic electroluminescent device so as to ensure excellent ohmic contact between the organic material and an electrode, bring convenience to the injection of the hole, improve the transmission efficiency of the hole, lower the driving voltage of the device, improve the efficiency of the device and prevent the thickness of the hole injection material from affecting the performance of the device.
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Description

technical field

[0001] The present invention relates to N, N'-bis(triphenylamino)fluorene diamine compounds, a preparation method thereof, the use of the compound as a material for the hole injection layer of an organic electroluminescent device, and a compound containing the compound in the hole injection layer Organic electroluminescent devices. Background technique

[0002] Organic electroluminescence has attracted the attention of many researchers because of its excellent luminescent properties. In 1987, Deng Qingyun's (Tang, C.W.et Al.Appl.Phys.Lett.1987, 52, 913) research group first proposed the first amorphous OLED. In 1990, Burroughes et al. (Burroughes, J.H. et al. Nature 1990, 347, 539) reported the first polymer light-emitting diode for the first time. Since then, the research on organic electroluminescence has entered a new stage. In recent decades, organic light-emitting diodes with fast response, high brightness, low operating voltage and large area have bee...

Claims

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