Blue light naphthalimide fluorescent compound

A naphthalimide and compound technology, which is applied in the field of naphthalimide compounds, can solve the problems of fluorescence quenching, device performance degradation, efficiency decline, etc., and achieve the effect of high solid-state fluorescence quantum efficiency
CN101648913AInactive Publication Date: 2010-02-17SICHUAN UNIV
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
SICHUAN UNIV
Publication Date
2010-02-17
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention relates to a blue light naphthalimide fluorescent compound with high solid fluorescence efficiency, which has the structure general formula shown at right, wherein R1 radical is 2-hydroxyethyl or 2-acetoxyl ethyl, R2 is hydrogen atom or tert-butyl group, and R3 is hydrogen atom or tert-butyl group. By introducing the tert-butyl group with large steric hindrance into the benzene ringof the 4-position phenoxyl substitutional group of 1, 8- naphthalimide, the invention increases the volume of target fluorescent molecules and reduces the mutual actions among the fluorescent molecules so as to reduce the concentration quenching action and enhance the solid fluorescence quantum efficiency. By introducing the tert-butyl group with large steric hindrance into the 2-position of the benzene ring of the 4-position phenoxyl substitutional group, the invention reduces the coplanarity of the benzene ring, oxygen atoms and a naphthalimide ring so as to ensure that the solid fluorescenttransmitted wavelength of the target fluorescent molecules shifts from aquamarine blue to ethereal blue.
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Description

1. Technical field

[0001] The invention relates to a class of naphthalimide compounds with blue fluorescent properties, in particular to a class of blue light naphthalimide compounds with high solid fluorescence quantum efficiency. 2. Background technology

[0002] Organic electroluminescent materials are the core components of organic electroluminescent devices, because luminescent materials can determine the luminous color, brightness and efficiency of devices. In order to realize full-color display, it is necessary to develop red, green, and blue primary color light materials with good photothermal stability and high fluorescence quantum efficiency. So far, only green light-emitting materials have met the practical requirements. Relatively speaking, the performance of red and blue light-emitting fluorescent devices is poor. Especially for blue electroluminescent devices, the highest luminous efficiency reported in the literature is only 9.1lm / W, and the color purity is ...

Claims

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