Diphenylacrylonitrile-based flexible crystalline materials, their preparation methods and applications

By designing diphenylacrylonitrile compounds to prepare flexible crystal materials, the problem of the fragility of organic crystal materials has been solved, enabling their application in flexible electronic devices. The materials emit light in the deep red or near-infrared region and are suitable for active optical waveguides.

CN117800874BActive Publication Date: 2026-05-05JILIN UNIVERSITY
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Patent Information

Application Number
CN202311781751.7
Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Filing Date
2023-12-22
Publication Date
2026-05-05
Estimated Expiration
2043-12-22

AI Technical Summary

Technical Problem

Existing organic crystal materials are easily broken under external force and cannot deform, making them difficult to use in flexible electronic devices. Furthermore, their light emission position cannot reach the near-infrared region, making them incompatible with existing standards.

Method used

By designing diphenylacrylonitrile compounds and modifying the diphenylacrylonitrile skeleton with different substituents, crystal materials with flexibility and deep red or near-infrared fluorescence emission were prepared. Excellent elastic crystals were grown using a slow solvent evaporation method and applied to flexible active optical waveguides.

Benefits of technology

The prepared diphenylacrylonitrile-based flexible crystal material can be bent under external force and retains its initial fluorescence properties. Its luminescence properties are stable, making it suitable for flexible active optical waveguides. The material is widely available, inexpensive, and easy to synthesize.

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Abstract

This invention discloses a diphenylacrylonitrile-based flexible crystal material, its preparation method, and its applications, relating to the field of organic optoelectronic functional materials. The basic structure of this organic fluorescent material consists of a diphenylacrylonitrile core with different substituents as substituent groups. The deep red or near-infrared flexible fluorescent organic crystal material is obtained by dissolving the powdered material in a suitable solvent and slowly evaporating it. The fluorescent material prepared by this invention uses inexpensive and readily available raw materials, and the preparation method is simple. The flexible crystal can be bent to a semi-circle at any angle. The material prepared by this invention has good elastic mechanical properties and can be applied to flexible optoelectronic devices, display materials, information storage materials, or optical waveguide materials.
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