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Application of perylene derivative

A technology of perylene and derivatives, applied in the field of detection, can solve the problems of polluting the environment, time-consuming, cumbersome latent fingerprint display methods, etc., and achieve the effect of low background and high sensitivity

Active Publication Date: 2015-07-22
CHANGCHUN INST OF APPLIED CHEMISTRY - CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to solve the technical problems that the existing latent fingerprint display method is cumbersome, time-consuming, pollutes the environment, requires complex instrument assistance, has high requirements on the properties and surface state of the developing object, and cannot clearly display difficult objects, and provides A kind of application of perylene derivative (PTTAC)

Method used

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  • Application of perylene derivative
  • Application of perylene derivative
  • Application of perylene derivative

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0067] combine figure 1 Illustrative Example 1

[0068] Application of Perylene Derivatives as Developers to Reveal Latent Fingerprints:

[0069] (1) Preparation of 1mM PTTAC (n=2) developer: Weigh 256mg of PTTAC (n=2), dissolve in 200mL of 100mM Tris-HCl buffer, fully dissolve and mix well, and place in a dark place , buffer containing 15 mM MgCl 2 , the pH of the buffer is 8.5;

[0070] (2) Show latent fingerprints: immerse the glass carrying the latent fingerprints in the PTTAC developing solution prepared in step (1), take it out after 60 minutes, wash off the excess PTTAC developing solution with clear water, and let it dry naturally;

[0071] (3) Use a 365nm ultraviolet lamp to irradiate the glass with latent fingerprints to obtain clear fingerprint lines.

[0072] figure 1 It is the fingerprint texture figure that the latent fingerprint on the glass of the embodiment of the present invention 1 shows, from figure 1 It can be seen that PTTAC (n=2) is used as a devel...

Embodiment 2

[0074] combine figure 2 Illustrative Example 2

[0075] Application of Perylene Derivatives as Developers to Reveal Latent Fingerprints:

[0076] (1) Preparation of 10μM PTTAC (n=6) developer: Weigh 3.01mg of PTTAC (n=6), dissolve in 200mL of 5mM PBS buffer, fully dissolve and mix well, and place in a dark place. The buffer contains 200mM NaCl, and the pH of the buffer is 8.0;

[0077] (2) Reveal latent fingerprints: immerse the PVDF transfer film carrying latent fingerprints in the PTTAC developer prepared in step (1), take it out after 30 seconds, wash off the excess PTTAC developer with water, and blow dry;

[0078] (3) Use a 365nm ultraviolet lamp to irradiate the PVDF transfer film loaded with latent fingerprints to obtain clear fingerprint lines.

[0079] figure 2 It is the fingerprint pattern that the latent fingerprint on the PVDF transfer film of the embodiment of the present invention 2 shows, from figure 2 It can be seen that PTTAC (n=6) is used as a develop...

Embodiment 3

[0081] combine image 3 Illustrative Example 3

[0082] Application of Perylene Derivatives as Developers to Reveal Latent Fingerprints:

[0083] (1) Preparation of 500μM PTTAC (n=5) developer: Weigh 145mg of PTTAC (n=5), dissolve in 200mL of 20mM Tris-HCl buffer, fully dissolve and mix well, and place in a dark place , the buffer contains 100mM NaCl, and the pH of the buffer is 7.5;

[0084] (2) Reveal latent fingerprints: immerse the aluminum foil carrying latent fingerprints in the PTTAC developing solution prepared in step (1), take it out after 10 minutes, wash away excess PTTAC developing solution with water, and blow dry;

[0085] (3) The aluminum foil carrying the latent fingerprint is irradiated with a 365nm ultraviolet lamp to obtain a clear fingerprint pattern.

[0086] image 3 It is the fingerprint texture figure that the latent fingerprint on the aluminum foil of the embodiment of the present invention 3 shows, from image 3 It can be seen that PTTAC (n=5) i...

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Abstract

The invention provides an application of a perylene derivative, belongs to the field of detection techniques, and solves the technical problems that the conventional developing method of latent fingerprints is cumbersome and time-consuming, pollutes the environment, needs complex instruments for assistance, has more requirements on the property and surface state of a to-be-developed object, and cannot clearly develop a knotty object. The perylene derivative provided by the invention can serve as a developing agent and is prepared into a developing solution used for the development of the latent fingerprints. As the developing agent, the perylene derivative provided by the invention can quickly and simply develop the latent fingerprints, is economical and practical, has high sensitivity, does not need the complex instruments for assistance, is harmless to the environment and operating personnel and has a wide application range, and the developed veins of the latent fingerprints can be preserved for a long time.

Description

technical field [0001] The invention relates to the application of a perylene derivative, which can be used as a developer to display latent fingerprints, and belongs to the technical field of detection. Background technique [0002] Fingerprints are the concave-convex lines formed by the folds of the epidermis at the end of the fingers or the imprints left behind. They are different from person to person, remain unchanged throughout life, and leave traces on objects. They were once called "the first evidence" by the judicial circle. Fingerprints can be divided into three categories: obvious fingerprints (transfers from hands stained with paint, blood, ink, etc.), molded fingerprints (formed by fingers touching and imprinting on soft substances such as candles and clay), and invisible fingerprints. Latent fingerprints (transferred from finger secretions and invisible pollutants carried by them). [0003] For latent fingerprints that are invisible to the naked eye, certain v...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A61B5/117A61B5/1172
Inventor 于聪王方远陈健周会鹏
Owner CHANGCHUN INST OF APPLIED CHEMISTRY - CHINESE ACAD OF SCI
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