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Organic aggregate materials with naked eye visible color change after fluorescence enhancement

A fluorescence enhancement and naked-eye technology, which is applied in the fields of color-changing fluorescent materials, organic chemistry, imino compound preparation, etc., can solve the problems of no invention report and discoloration

Inactive Publication Date: 2017-01-04
CHONGQING UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, through the way of aggregation induction, organic materials can undergo a significant increase in fluorescence and then change color, especially the naked eye can observe such a process, so far there is no invention report

Method used

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  • Organic aggregate materials with naked eye visible color change after fluorescence enhancement
  • Organic aggregate materials with naked eye visible color change after fluorescence enhancement
  • Organic aggregate materials with naked eye visible color change after fluorescence enhancement

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0014] 3-(2'-Hydroxy-phenyl-methyl-imino)-stilbene

[0015] In a mixed solvent of benign (such as DMF) and poor solvent (such as water), 3-(2'-hydroxy-phenyl-methyl-imino)-stilbene organic Aggregates, and the color change process occurs after the naked-eye visible fluorescence is greatly enhanced. When the above organic aggregation system is observed under a UV lamp with a wavelength of 365nm for 3 minutes, there is almost no fluorescence enhancement; the solution appears light yellow after 20 minutes. After 50 minutes, the solution was bright yellow, and after standing for 2 hours, the organic aggregate solution system changed from yellow light to pure blue light and remained stable, as shown in figure 1 shown.

[0016] The above-mentioned prepared organic nano-scale aggregate material placed for 50min and 12h was obtained by scanning electron microscope (SEM) the morphology picture of the nano-scale aggregate material of the above-mentioned compound, as figure 2 Shown (a:...

Embodiment 2

[0018] 3-(2'-Hydroxy-phenyl-methyl-imino)-4'-N,N-dimethyl-stilbene

[0019] In a mixed solvent of benign (such as DMF) and poor solvent (such as water), 3-(2'-hydroxy-phenyl-methyl-imino)-4'-N was obtained by self-polymerization induction, The organic aggregates of N-dimethyl-stilbene, and the color change process occurs after the naked-eye visible fluorescence is greatly enhanced. When the above-mentioned organic aggregate solution system is observed under a UV lamp with a wavelength of 365nm for 3 minutes, there is almost no Fluorescence enhancement; after standing for 20 minutes, the solution was light yellow, and after standing for 50 minutes, the solution was bright yellow. After standing for 2 hours, the organic aggregate solution system changed from yellow light to pure blue light and remained stable, as shown in image 3 shown.

[0020] The above-mentioned prepared organic nano-scale aggregate material placed for 50min and 12h was obtained by scanning electron microsc...

Embodiment 3

[0022] 3-(2'-Hydroxy-phenyl-methyl-imino)-4'-N,N-diethyl-stilbene

[0023] In a mixed solvent of benign (such as DMF) and poor solvent (such as water), 3-(2'-hydroxy-phenyl-methyl-imino)-4'-N was obtained by self-polymerization induction, The organic aggregates of N-diethyl-stilbene, and the color change process occurs after the naked-eye visible fluorescence is greatly enhanced. When the above-mentioned organic aggregate solution system is observed under a UV lamp with a wavelength of 365nm for 3 minutes, there is almost no Fluorescence enhancement; after standing for 20 minutes, the solution was pale yellow, and after standing for 50 minutes, the solution was bright yellow. After standing for 2 hours, the organic aggregate solution system changed from yellow light to pure blue light and remained stable, as shown in Figure 5 shown.

[0024] The above-mentioned prepared organic nano-scale aggregate material placed for 50min and 12h was obtained by scanning electron microscop...

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Abstract

The invention relates to a type of organic aggregate materials with naked eye visible color change after fluorescence enhancement. The general chemical formula of the materials is described in the description, wherein R in the structural formula is hydrogen, oxygen methyl, N,N-dimethyl, N,N-diethyl, cyano, nitro, chloro or the like. Organic aggregates are obtained by adding organic molecules into a mixed solvent of a benign solvent (such as N,N-dimethyl formamide) and a non-benign solvent (such as water) in a solvent inducing way; the color change of the obtained materials are drastic naked eye visible after fluorescence enhancement.

Description

technical field [0001] The invention belongs to the technical field of organic nanometer materials, and in particular relates to the preparation and application of a kind of organic aggregate material that can be seen by the naked eye and changes color after enhanced fluorescence. Background technique [0002] At present, the organic nanomaterials prepared by aggregation-induced methods with fluorescent organic small molecules as target compounds have good potential application value in optical sensing and biological cell imaging. However, through the way of aggregation induction, organic materials can undergo a significant increase in fluorescence and then change color, especially such a process can be observed with the naked eye, so far there has not been any invention report. Contents of the invention [0003] The purpose of the present invention is exactly in order to fill up the deficiency of above-mentioned background technology, invents the organic aggregation mater...

Claims

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Application Information

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IPC IPC(8): C07C251/24C07C249/02C09K9/02
CPCC07C251/24C07C249/02C09K9/02C09K2211/1007C09K2211/1014
Inventor 苏纪宏王震强丁戈高放李红茹张胜涛罗自萍
Owner CHONGQING UNIV
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