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9-phenyl-substituted fluorene derivative, and preparation method and application thereof

A technology of phenyl substitution and derivatives, which is applied in the field of organic compound synthesis, can solve the problems of few reports on orange and red phosphorescent materials, and achieve good electroluminescence efficiency, simple synthesis route, and excellent thermal stability

Active Publication Date: 2017-03-22
NANJING UNIV OF POSTS & TELECOMM
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, there are few reports on orange and red phosphorescent materials, especially those applicable to solution processing techniques.

Method used

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  • 9-phenyl-substituted fluorene derivative, and preparation method and application thereof
  • 9-phenyl-substituted fluorene derivative, and preparation method and application thereof
  • 9-phenyl-substituted fluorene derivative, and preparation method and application thereof

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Embodiment approach

[0045] The present invention designs and synthesizes a class of blue-light host materials with high-efficiency fluorescent emission, whose basic framework is 1,4-bis(9-phenylfluorene)-phenylene, and naphthylaniline as a derivative of a functional substituent group. The molecular structure and configuration of this series of materials were characterized by mass spectrometry (EIMS or TOF), proton nuclear magnetic resonance and carbon nuclear magnetic resonance. The photophysical properties of the compounds were studied by UV absorption spectroscopy. The electrochemical properties of the compounds were studied by cyclic voltammetry. The thermodynamic properties of the compounds were studied by differential thermal-differential gravimetric analysis (DTA-TGA).

[0046] 1. The synthetic route is shown in Formula 1 below.

[0047] Synthesis of 1,4-bis(9-p-bromophenylfluorene)benzene (DBPFB).

[0048] The specific implementation method is as follows:

[0049] Under a nitrogen atmo...

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Abstract

The invention discloses a 9-phenyl-substituted fluorene derivative, and a preparation method and an application thereof; the 9-phenyl-substituted fluorene derivative has the following molecular structure defined in the specification. The invention provides a method for simple preparation of a multi-functional organic electroluminescent material; the method is simple in process and low in manufacture cost; through simple solution-method preparation process, high-efficiency green light devices or orange phosphorescent devices can be obtained, and the method is suitable for large-scale industrialized production.

Description

technical field [0001] The invention relates to the field of organic compound synthesis, in particular to a 9-phenyl substituted fluorene derivative, a preparation method and an application thereof. Background technique [0002] Low-energy light sources such as orange and red organic light-emitting diodes (OLEDs) have made great strides in flexible full-color displays, backlighting LCD screens, and next-generation solid-state lighting sources due to their potential applications. (Ying, L.; Ho, C.L.; Wu, H.B.; Cao, Y.; Wong, W.Y. White Polymer Light-Emitting Devices for Solid-State Lighting: Materials, Devices, and Recent Progress. Adv. Mater. 2014, 26, 2459- 2473.) In general, phosphorescent materials are usually dispersed in a suitable host material to avoid triplet annihilation or concentration quenching. (Baldo, M.A.; O'Brien, D.F.; You, Y.; Shoustikov, A.; Sibley, S.; Thompson, M.E.; Forrest, S.R. Highly Efficient Phosphorescent Emission from Organic Electroluminescent ...

Claims

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Application Information

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IPC IPC(8): C07C211/58C07C209/10H01L51/54
Inventor 叶尚辉全梅菡周舟杨敏黄维
Owner NANJING UNIV OF POSTS & TELECOMM
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