Diphenylethylene type co-crystallization materials with multi-stimulus fluorescence response property and preparation method thereof

Abstract

The invention discloses a series of cyano-substituted diphenylethylene type co-crystallization compounds with multi-stimulus fluorescence response property and a preparation method thereof, belonging to the field of crystalline materials with subject and object structures. The novel crystalline compounds are obtained by selecting a cyano-substituted diphenylethylene compound as a subject, taking a series of organic small molecular compounds with hydroxyl, carboxyl and other groups or halogenated benzene and the like as objects, and performing co-crystallization by subject and object identification and intermolecular interaction. The compounds disclosed by the invention are characterized in that the selected cyano-substituted diphenylethylene compound has excellent optical property, the co-crystallization materials can be obtained by the action of frictional force, the ultrasonic action, solvent volatilization and other methods, and the precise crystal structures can be determined; and simultaneously, the series of the co-crystallization materials have reversible fluorescence response against a variety of external stimuli (such as light, pressure, organic solvents and the like). The compounds have application prospects in the fields of manufacturing of optical anti-counterfeiting materials, fluorescent sensors and optoelectronic devices, and the like.

Description

technical field [0001] The invention belongs to the field of molecular solid fluorescent materials, and provides a new design idea and feasible scheme for the preparation of novel multi-stimulus fluorescence response multi-element molecular crystal materials, especially the preparation of a series of cyano-substituted stilbene-type multi-crystal compounds method. Background technique [0002] Organic fluorescent materials with stimuli-response functions have gradually attracted extensive attention from industry and academia due to their sensitive and fast response signals. Such materials have important application value in the fields of sensors and optical anti-counterfeiting. In recent years, adjusting the arrangement mode of molecules by changing external conditions has gradually become the main strategy for designing and preparing such stimuli-responsive functional materials. For example, in 2005, Mutai et al. reported that molecular solids can change their fluorescence ...

AI Technical Summary

Problems solved by technology

However, due to the complexity of the spatial structure of molecules when they form solids, the solid-state emission colors of stilbene compounds are often unpredictable.

Images