Organic luminescent material as well as preparation method and application thereof

By designing an organic luminescent material with spirocyclic biimidazole as the framework, the problems of slow recovery rate of the reverse reaction and poor fatigue resistance of existing photochromic materials are solved, and the material is completely faded and has excellent fatigue resistance within a few seconds. It is suitable for fluorescent molecular switches or super-resolution imaging fields.

CN119708013APending Publication Date: 2025-03-28WUHAN SUNSHINE OPTOELECTRONICS TECH CO LTD
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Patent Information

Application Number
CN202311262321.4
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2023-09-27
Publication Date
2025-03-28

AI Technical Summary

Technical Problem

The current photochromic materials have a slow recovery rate of reverse reaction after photochromicity and have poor fatigue resistance, which cannot meet the industry's demand for the rapid recovery of the initial state of the materials and improve fatigue resistance.

Method used

An organic luminescent material with spirocyclic biimidazole as the skeleton is provided, and its structure includes specific aryl groups, heterocyclic groups and other functional groups, prepared by McMurray reaction and other organic synthesis steps. The material is able to completely fade in seconds and has excellent fatigue resistance.

Benefits of technology

It realizes the function of photochromic materials to completely fade within a few seconds and significantly improves fatigue resistance. It is suitable for fluorescent molecular switches or super-resolution imaging fields.

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Abstract

The invention relates to an organic light-emitting material as well as a preparation method and application thereof, and belongs to the technical field of materials, the organic light-emitting material has a structural formula as shown in a formula 1 or a formula 2: # imgabs0 #, and Ar1 and Ar2 are independently selected from any one of substituted or unsubstituted C6-C18 aryl groups and C3-C8 heterocyclic groups respectively; r < 1 >, R < 2 >, R < 3 > and R < 4 > are respectively and independently selected from any one of C1-C4 alkyl groups and substituted or unsubstituted C6-C18 aryl groups; r5 and R6 are respectively and independently selected from a single bond, S, N (R7), O or a keto group, R1, R2, R3 and R4 are the same or different, and R5 and R6 are the same or different; m and n are respectively and independently 0 or 1; and R7 is selected from alkyl groups of C1-C4 or aryl groups of C6-C18. The organic light-emitting material provided by the invention is a brand-new photochromic material taking spiro-biimidazole as a skeleton, can completely fade within a few seconds, is excellent in fatigue resistance, and has excellent application prospects in the field of fluorescent molecular switches or super-resolution imaging.
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