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Novel donor-acceptor fluorene scaffolds : a process and uses thereof

一种给体、新型的技术，应用在π-共轭体系领域，能够解决破坏OLED蓝颜色纯度等问题

Inactive Publication Date: 2011-05-04
COUNCIL OF SCI & IND RES
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0080] Another object of the present invention relates to overcoming the problem caused by the oxidation of 9-unsubstituted fluorene units in oligofluorene or polyfluorene to the corresponding fluorenone, which exhibits a green emission band and destroys the blue color purity of polyfluorene-based OLEDs. The "Green Emission Defect" Problem

Method used

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  • Novel donor-acceptor fluorene scaffolds : a process and uses thereof
  • Novel donor-acceptor fluorene scaffolds : a process and uses thereof
  • Novel donor-acceptor fluorene scaffolds : a process and uses thereof

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Embodiment approach

[0175]

[0176] a) reacting a compound having general formula S-1 with a compound having general formula S-2 to provide a compound having general formula T-1, wherein R 1 , R 2 , R 3 , R 4 , R 5 , R 6 , R 7 , R 8 Independently selected from the group consisting of hydrogen, optionally substituted alkyl, optionally substituted alkenyl, optionally substituted alkoxy, optionally substituted aryl, optionally substituted heteroaryl, Optionally substituted alkylthio, optionally substituted amino, optionally substituted amido, optionally substituted arylamino, optionally substituted acylthio, optionally substituted acyl, optionally substituted aroyl, any Optional substituted acyloxy, optionally substituted thioamido, halogen, ester, hydroxyl, mercapto, carbon trifluoride, nitro;

[0177] Wherein, A is selected from the following units: an optionally substituted or unsubstituted one carbon unit, an optional keto group, an optionally substituted alkene, an oxygen atom, a sulfur atom or a n...

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Abstract

The present invention relates to novel donor-acceptor fluorene compounds, which can be used as for the fabrication of electroluminescent devices, and a process of preparing said novel compounds. More particularly, the present invention relates to amine donor and nitrile / ester acceptor fluorenes, fluorenones their pi-conjugated systems and related compounds, processes for preparing the said compounds including oxidation of fluorenes to corresponding fluorenones and their use in preparing organic electronic devices such as organic light emitting diodes (OLEDs), photovoltaic / solar cell, field effect transistors and other useful electroluminescent devices. The compounds are prepared by reacting 2H-pyran-2-ones in isolated or rigid conformations with cyclic ketones containing methylene carbonyl moiety in the presence of a base in- an organic solvent. The present invention also relates to a new concept and approach to overcome the problem of 'Green emission defect' in 9-unsubstituted fluorene-based organic light emitting diodes which occurrs due to the conversion of fluorenes to fluorenones that show emission mainly in green-yellow region. In the present invention we have placed donor-acceptor substituents in such a way that donor-acceptor fluorenones show emission in the blue region (instead of green-yellow region) thus improving the blue colour purity and overcoming the problem of green emission defect.

Description

Field of invention: [0001] The present invention relates to novel donor-acceptor fluorene, fluorenone and their π-conjugated system of general formula I that can be potentially used to prepare electroluminescent devices, and a method for preparing the novel compound. More specifically, the present invention relates to amine donors and nitrile / ester acceptors fluorene, fluorenone and their π-conjugated systems and related compounds, including methods for preparing the compounds by oxidation of fluorene to fluorenone, and their preparation Electronic devices such as organic light emitting diodes (OLED), photovoltaic / solar cells, field effect transistors and other useful electroluminescent devices. The present invention also relates to a new concept and method for overcoming the "green emission defect" that mainly displays emission in the green-yellow interval due to the conversion of fluorene to fluorenone in the organic light emitting diode based on 9-unsubstituted fluorene. [00...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07D211/14C07D307/54C07D333/24C07D295/155C07D207/327
CPCC07D207/327C07D211/14C07D307/54C07D333/24Y02E10/549C07D295/155Y02P70/50H10K85/626Y10S428/917
Inventor 阿图尔·戈尔索密·肖拉西亚维贾伊·库马孙达尔·马诺哈兰R·S·阿南德
Owner COUNCIL OF SCI & IND RES
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