Diarylethene fluorescent molecular switch and preparation method and application thereof

A technology of diarylethene and fluorescent molecules, which is applied in the fields of fluorescence/phosphorescence, chemical instruments and methods, and material analysis through optical means, and can solve problems such as low fluorescence quenching efficiency, no visible light response, and high fluorescence switching ratio. , to achieve high quantum yield, rich molecular switch system, and simple synthesis
CN107652279AActive Publication Date: 2018-02-02HUAZHONG UNIV OF SCI & TECH
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
HUAZHONG UNIV OF SCI & TECH
Publication Date
2018-02-02

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Abstract

The invention discloses an aggregation-induced emission type diarylethene fluorescent molecular switch and a preparation method and application thereof. The aggregation-induced emission type diarylethene fluorescent molecular switch is characterized in that an AIE radical is introduced to gain solid or aggregation strong emission capacity; two diarylethene can be used for quickly quenching fluorescence of fluorescent radicals which aggregate in the surrounding under the irradiation of ultraviolet rays or visible light, thus achieving the purpose of high fluorescent switch ratio. According to the light control type AIE-effect fluorescent molecular switch, the limitation that traditional fluorescent chromophore leads to fluorescence quenching is broken; in addition, the fluorescent molecularswitch in solid and aggregation state has the advantages of being high in switch ratio and high in fluorescence quenching efficiency by being compared with the fluorescent molecular switch in solution state; the fluorescent molecular switch is applicable to information storage under solid state and photoelectric devices and has potential application in biosensing and fluorescence imaging.
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Description

technical field

[0001] The invention belongs to the field of organic synthesis, and more specifically relates to a diarylethene fluorescent molecular switch with aggregation-induced luminescence, its preparation method and application. Background technique

[0002] Aggregation-induced emission (AIE) materials, whether in solid state, nanoparticles, or in polymer media, can exhibit stronger fluorescence emission than in solution, which is of great help to realize the practical application of fluorescent materials.

[0003] Wei-Hong Zhu's research group reported a fluorescent molecular switch that combines the AIE group quinoline malononitrile with diarylethene. The conversion rate of the photocyclization reaction is 57.6%. The tetrahydrofuran mixture has a fluorescence on-off ratio of about 5. Due to its low fluorescence intensity and low fluorescence quantum yield, it has not been used.

[0004] Park's group reported for the first time a fluorescent molecular switch that co...

Claims

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