Aggregation-induced emission material and preparation method and application thereof

A technology of aggregation-induced luminescence and hydrogen atoms, which is applied in the field of fluorescence detection, can solve the problems of lack of responsiveness of luminescent materials to carbon dioxide, achieve rapid response, good application prospects, and improve the effect of responsiveness

Active Publication Date: 2020-05-08
SOUTH CHINA NORMAL UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the bottleneck of the current research is that the luminescent materials used are not responsive to carbon dioxide.

Method used

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  • Aggregation-induced emission material and preparation method and application thereof
  • Aggregation-induced emission material and preparation method and application thereof
  • Aggregation-induced emission material and preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0045] This embodiment provides an electrically controllable aggregation-induced luminescent material TPE-(1)amidine, whose structural formula is

[0046]

[0047] The aggregation-induced luminescent material can be synthesized at least according to the following route:

[0048]

[0049] details as follows:

[0050] 1) Compound TPE-NH 2 Synthesis

[0051] Add zinc powder (3.3g), 4-aminobenzophenone (2.5g), and benzophenone (2.5g) into a well-dried 250mL two-necked round-bottomed flask and cycle 3 times to vacuumize and fill with argon. Inject 100 mL of ultra-dry tetrahydrofuran under air atmosphere. The mixture was cooled to -78°C in a liquid nitrogen acetone bath, and titanium tetrachloride (2.9 mL) was slowly added dropwise. After the dropwise addition, the reaction mixture was stirred for 15 min. The liquid nitrogen acetone bath was removed, and the reaction system was gradually returned to room temperature and kept stirring for half an hour. Finally, heat to 80°...

Embodiment 2

[0059] This embodiment provides a liquid carbon dioxide detection material, the liquid carbon dioxide detection material consists of a good solvent DMF, a poor solvent H 2 O and aggregation-induced luminescent material TPE-(n)amidine composition.

[0060] TPE-(n)amidine was synthesized by the method of Example 1, and prepared as a solution of TPE-(1)amidine (100 μM) in DMF / H2O (volume ratio 1:9, 3 mL in total).

Embodiment 3

[0062] Liquid carbon dioxide detection material performance test

[0063] The liquid carbon dioxide detection material (ie solution form) was prepared by the method in Example 2.

[0064] (1) Detection sensitivity experiment

[0065] The specific process of the experiment is as follows: about 0.5 μL of carbon dioxide is injected into the solution of the liquid carbon dioxide detection material each time, and a total of 8 μL is injected. image 3 It is a diagram of the sensitivity experiment results of the liquid carbon dioxide detection material according to another embodiment of the present invention, a is the variation of photoluminescence intensity at different carbon dioxide feed rates, and b is the fitted absorbance-carbon dioxide concentration based on the variation Fluorescence curve (R 2 = 0.99528, from 0 to 8 μL). It can be seen from the figure that the fluorescence emission peak of the aggregation-induced luminescence material is at 500 nm, and the whole sample em...

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Abstract

The invention discloses an aggregation-induced emission material as well as a preparation method and application thereof. The aggregation-induced emission material has good response performance to carbon dioxide and has a structural formula shown as a formula (I), L1, L2, L3 and L4 are independently selected from any one of hydrogen atoms, amidino and guanidino, and L1, L2, L3 and L4 are not hydrogen atoms at the same time. The aggregation-induced emission material can be used as a good carbon dioxide fluorescent probe molecule; the material is a compound containing tetraphenyl ethylene and amidino / guanidino. The property that the amidino / guanidino can specifically respond to the carbon dioxide and the property that the structure can form a more stable conjugated structure after reacting with carbon dioxide are utilized; compared with the mode that tetraphenyl ethylene and amidino / guanidino compounds are independently mixed, quicker response can be achieved, and good application prospects are achieved in the field of carbon dioxide gas detection.

Description

technical field [0001] The invention relates to the technical field of fluorescence detection, in particular to an aggregation-induced luminescent material and its preparation method and application. Background technique [0002] carbon dioxide (CO 2 ) is a common gas that plays a key role in several integral business processes such as refrigerants, preservatives, extractants, industrial chemicals, and more. But CO 2 Is an asphyxiating gas that can cause metabolic acidosis at high concentrations and chronic exposure. In addition, a certain degree of CO gradually accumulates in the closed space 2 , It is easy to cause suffocation or even death of the crowd. Therefore, the development of CO with corresponding sensitivity 2 Trace detection methods can trigger alarms and take measures in time when problems occur, which can well avoid such incidents. while CO 2 The trace detection method is also continuously developed with the research of technicians. [0003] Currently, ...

Claims

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Application Information

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IPC IPC(8): C07C257/14C07C277/08C07C279/18C09K11/06G01N21/64B01J13/00
CPCC07C257/14C07C279/18C09K11/06G01N21/643B01J13/0065C09K2211/1007Y02A50/20
Inventor 王耀麦智健周国富
Owner SOUTH CHINA NORMAL UNIVERSITY
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