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Application of an Aggregation-Induced Fluorescent Probe in Fingerprint Fluorescence Imaging

A technology of aggregation-induced fluorescence and fluorescent probes, which is applied in the application field of aggregation-induced fluorescent probes in fingerprint fluorescence imaging, can solve the problems of low collection efficiency and complicated operation, and achieve fast imaging speed, simple molecular structure and easy preparation The effect of convenience

Active Publication Date: 2020-11-24
HUAZHONG UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This solves the technical problems that the traditional fingerprint collection method has low collection efficiency, complicated operation, and has certain requirements for the collection background.

Method used

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  • Application of an Aggregation-Induced Fluorescent Probe in Fingerprint Fluorescence Imaging
  • Application of an Aggregation-Induced Fluorescent Probe in Fingerprint Fluorescence Imaging
  • Application of an Aggregation-Induced Fluorescent Probe in Fingerprint Fluorescence Imaging

Examples

Experimental program
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Effect test

preparation example Construction

[0041] The fluorescent probes of the present invention can be prepared by conventional preparation methods. The application of the fluorescent probe of the present invention in latent fingerprint fluorescence imaging specifically includes the following steps:

[0042] The solution containing the fluorescent probe is contacted with the carrier containing the latent fingerprint, so that the fluorescent probe gathers at the ridge of the latent fingerprint, and under ultraviolet light, the fluorescent probe molecule in the excited state decays back to In the ground state, it emits fluorescence, thereby realizing fluorescence imaging of latent fingerprints.

[0043] In some embodiments, by dropping the solution containing the fluorescent probe on the carrier containing the latent fingerprint, or spraying the solution containing the fluorescent probe on the carrier containing the latent fingerprint, or spraying the solution containing the latent fingerprint The carrier of the finge...

Embodiment 1

[0057] First prepare an aqueous solution of the dye. Mix the dye and a certain amount of water in a glass bottle, then put it into an ultrasonic cleaner and mix it ultrasonically until the solution has no particles visible to the naked eye. So far, the preparation of the fluorescent probe solution for chromogenic detection of latent fingerprints has been completed.

[0058] Wherein the dye is the fluorescent probe of the present invention, and its molecular structural formula is as shown in formula (1), wherein, Ar 1 for R 1 Is hydroxyethyl; Ar 2 for

[0059] It can be obtained by a simple one-step synthesis. Compound (E)-2-(4-(4-(2-(pyridin-4-yl)vinyl)phenyl)piperazin-1-yl)ethanol synthesis, add 4-(4-( 2-hydroxyethyl) piperazin-1-yl) benzaldehyde (1eq), :4-picoline (1eq), potassium tert-butoxide (2eq, the stoichiometric number of feeding of potassium tert-butoxide is 2, at 2eq The amount of feed can be properly added to help complete the reaction.), then add DMF (di...

Embodiment 2

[0069] First prepare an aqueous solution of the dye. Mix the dye and a certain amount of water in a glass bottle, then put it into an ultrasonic cleaner and mix it ultrasonically until the solution has no particles visible to the naked eye. So far, the preparation of the fluorescent probe solution for chromogenic detection of latent fingerprints has been completed.

[0070] Wherein the dye is the fluorescent probe of the present invention, and its molecular structural formula is as shown in formula (1), wherein, R 3 Is hydroxyethyl; Ar 1 for Ar 2 for

[0071] It can be obtained through a simple one-step reaction synthesis. Similar to Example 1, also aldehyde Reaction with picoline gives the final product.

[0072] As in Example 1, the fluorescent probe is used for the fluorescence imaging detection of latent fingerprints whose substrate is a plastic petri dish, and the following results can be obtained: Figure 4 , it can be seen from the figure that the fingerprin...

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Abstract

The invention relates to the field of new material fluorescence probes, and more particularly to the application of an aggregation-induced fluorescence probe in fingerprint fluorescence imaging. The fluorescence probe has a general structural formula shown in formula (1): wherein R1 and R2 are substituent groups at any position of Ar1 and Ar2, and at least one of R1 and R2 is a hydrophilic group;and Ar1 and Ar2 are aromatic rings. By using the fluorescent probe provided by the invention and by using an ordinary digital single lens reflex camera, a potential fingerprint on the surface of a smooth object can be displayed by an ultraviolet light exciting method. Fluorescence fingerprint imaging with low background noise, high brightness and high definition is obtained more conveniently and directly.

Description

technical field [0001] The invention relates to the field of novel material fluorescent probes, and more specifically, relates to the application of an aggregation-induced fluorescent probe in fingerprint fluorescence imaging. Background technique [0002] Fingerprints refer to the raised ridges and sunken valleys on the skin surface of the fingers, which together form specific lines. The characteristics of its lines have been fixed in human infancy. Fingerprints are composed of deactivated stratum corneum cells on the surface of the skin. Even if it is constantly worn in life, as long as it does not damage the dermal tissue, it will still grow naturally and will not change. When our fingers touch the face, neck, hair follicles, the sebum content in these papillae increases, and then when the sebum-rich papillae come into contact with the surface material of aluminum, quartz, mica, coins, porcelain When an object leaves a pattern of mirrored fingerprint ridges, this patter...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N21/64
CPCG01N21/6428G01N21/6456G01N21/6486
Inventor 李冲田蕊朱明强王亚龙
Owner HUAZHONG UNIV OF SCI & TECH
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