Microporous glass-based organic fluorescent sensing film as well as preparation method and application thereof

By adsorbing fluorescence sensitive molecules on the microporous glass substrate, the problems of poor fluorescence and poor light stability caused by ACQ phenomenon in the thin film state are solved, and efficient gas sensing and long-term stable fluorescence emission are achieved.

CN120352394APending Publication Date: 2025-07-22SHANGHAI INST OF MICROSYSTEM & INFORMATION TECH CHINESE ACAD OF SCI
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Patent Information

Application Number
CN202510341383.7
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2025-03-21
Publication Date
2025-07-22

AI Technical Summary

Technical Problem

Existing fluorescence sensitive molecules are poor in fluorescence and poor light stability due to aggregation fluorescence quenching phenomenon (ACQ) in thin film state, which limits their application.

Method used

Microporous glass is used as the thin film substrate, and fluorescent sensitive molecules are adsorbed in the micropores, sensing is achieved through the interaction between the fluorescent sensitive molecules and the gas to be tested, and the protective effect of microporous glass is used to enhance the molecular interaction and inhibit ACQ phenomenon.

Benefits of technology

It realizes stable emission of fluorescence in solid state, improves sensing ability and light stability, enhances intermolecular interactions, simplifies the preparation process, is suitable for a variety of ACQ materials, and has high luminous efficiency and long-term use capabilities.

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Abstract

The invention relates to a microporous glass-based organic fluorescent sensing film as well as a preparation method and application thereof, microporous glass is used as a film substrate, and fluorescent sensitive molecules sensitive to gas of an object to be detected are adsorbed in surface micropores of the microporous glass. The microporous glass-based organic fluorescent sensing film provided by the invention has relatively high luminous efficiency, and can realize detection of a to-be-detected object gas according to the change of fluorescence intensity of the microporous glass-based organic fluorescent sensing film; the preparation strategy of the microporous glass-based organic fluorescent sensing film is suitable for various ACQ materials, and the film prepared from different fluorescent sensing materials can be easily obtained by regulating and controlling the aperture of the microporous glass substrate; the microporous glass-based organic fluorescent sensing film disclosed by the invention has good light stability, is not easy to bleach under strong light irradiation, and meets long-term storage and use requirements.
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