A near-infrared aggregation-induced luminescence material and its preparation method and application
By developing near-infrared aggregation-induced luminescence materials, using their aggregation-induced luminescence characteristics in latent fingerprint detection, the existing latent fingerprint detection methods are solved, and a high-resolution, fast, economical and harmless latent fingerprint detection effect is achieved.
CN115536640BActive Publication Date: 2025-03-21HENAN AGRICULTURAL UNIVERSITY
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Patent Information
- Application Number
- CN202211287222.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- Filing Date
- 2022-10-20
- Publication Date
- 2025-03-21
- Estimated Expiration
- 2042-10-20
AI Technical Summary
Technical Problem
The existing latent fingerprint detection methods have problems such as complex operation, expensive equipment, and harmful to personnel and the environment, and lack a simple, fast, economical and harmless detection method.
Method used
A near-infrared aggregation-induced luminescent material was developed, and a near-infrared aggregation-induced luminescent material was constructed by connecting trianiline and isoquinoline as donor and acceptor modules, and a developer was sprayed with an atomizer to image the latent fingerprint.
Benefits of technology
High-resolution imaging of latent fingerprints is achieved, the development process is simple, fast, and low-cost, and is harmless to the detector and the environment.
✦ Generated by Eureka AI based on patent content.
Abstract
The present invention relates to the technical field of latent fingerprint detection, and specifically to a near-infrared aggregation-induced luminescence material and a preparation method and application thereof. In the near-infrared aggregation-induced luminescence material, triphenylamine is used as an electron donor, isoquinoline is used as an electron acceptor, an aromatic ring is used as a π bridge to connect the two parts, and the single-bonded benzene ring in the molecule has a strong intermolecular torsional charge transfer (TICT) effect. The material has excellent near-infrared luminescence performance in an aggregated state, has high affinity for fingerprint secretions, grease, etc., has the advantages of simple synthesis, mild reaction conditions, good luminescence performance in an aggregated state, etc., can realize latent fingerprint imaging on various materials through atomizer spraying, and realize high-resolution imaging of the tertiary structure of the fingerprint, achieving extremely high resolution.
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