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A temperature-responsive luminescent gold nanomicelle and its preparation method and application in visual temperature detection

A temperature-responsive, gold nanotechnology, applied in the direction of luminescent materials, chemical instruments and methods, measuring devices, etc., can solve the problems of cross-termination, low practicability, and retardation

Active Publication Date: 2020-10-27
SOUTH CHINA UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Many RAFT polymerization studies have shown that there will be defects such as retardation, cross-termination and induction phenomena during polymerization, resulting in the disadvantages of complex polymerization process, difficult purification, poor stability and low practicability.

Method used

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  • A temperature-responsive luminescent gold nanomicelle and its preparation method and application in visual temperature detection
  • A temperature-responsive luminescent gold nanomicelle and its preparation method and application in visual temperature detection
  • A temperature-responsive luminescent gold nanomicelle and its preparation method and application in visual temperature detection

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0048] (1) At room temperature, put 8 μL of 0.00015g / ml 2,2-(4,4-distyryl)bisbenzoxazole, 0.2667g of surfactant F127 and 2ml of THF in a 50ml single-necked flask , Mix evenly under magnetic stirrer 1000rpm / min or ultrasonic conditions. At room temperature, use a rotary evaporator to fully dry;

[0049] (2) At room temperature, add 10ml of secondary water to the solid powder obtained in step (1), stir with a magnetic stirrer (1000rpm / min), stir until completely dissolved, then add 0.01813g tetrakis (3-mercaptopropionic acid) pentaerythritol ester and stir well;

[0050] (3) Add 290 μL of 89.94M HAuCl drop by drop according to the ratio of the amount of thiol small molecule compound and Au(III) to 1.4:1 4 The solution was stirred for 15-30 minutes until the solution became colorless, and the pH of the solution was adjusted to 8. Under stirring in a constant temperature oil bath at 95° C. (1000 rpm / min), fully reacted for 6 hours.

[0051] (4) The sample obtained above was dia...

Embodiment 2

[0055] (1) At room temperature, put 10 μL of 0.00015 g / ml 2,2-(4,4-distyryl) bisbenzoxazole, 0.2667 g of surfactant F127 and 2 ml of tetrahydrofuran into a 50 ml single-necked flask, Mix evenly under magnetic stirrer 1000rpm / min or ultrasonic condition. At room temperature, use a rotary evaporator to fully dry;

[0056] (2) At room temperature, add 10ml of secondary water to the solid powder obtained in step (1), stir with a magnetic stirrer (1000rpm / min), stir until completely dissolved, then add 0.01813g tetrakis (3-mercaptopropionic acid) pentaerythritol ester and stir well;

[0057] (3) Add 290 μL 89.94M HAuCl dropwise to the ratio of the amount of mercapto small molecule compound and Au(III) to 1.4:1 4 The solution was stirred for 15-30 minutes until the solution became colorless, and the pH of the solution was adjusted to 8. Under stirring in a constant temperature oil bath at 95° C. (1000 rpm / min), fully reacted for 6 hours.

[0058] (4) The sample obtained above was...

Embodiment 3

[0062] (1) At room temperature, put 15 μL of 0.00015 g / ml 2,2-(4,4-distyryl) bisbenzoxazole, 0.2667 g of surfactant F127 and 2 ml of tetrahydrofuran in a 50 ml single-necked flask, Mix evenly under magnetic stirrer 1000rpm / min or ultrasonic conditions. At room temperature, use a rotary evaporator to fully dry;

[0063] (2) At room temperature, add 10ml of secondary water to the solid powder obtained in step (1), stir with a magnetic stirrer (1000rpm / min), stir until completely dissolved, then add 0.01813g tetrakis (3-mercaptopropionic acid) pentaerythritol ester and stir well;

[0064] (3) Add 290 μL 89.94M HAuCl dropwise to the ratio of the amount of mercapto small molecule compound and Au(III) to 1.4:1 4 The solution was stirred for 15-30 minutes until the solution became colorless, and the pH of the solution was adjusted to 8. Under stirring in a constant temperature oil bath at 95° C. (1000 rpm / min), fully reacted for 6 hours.

[0065] (4) The sample obtained above was ...

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Abstract

The invention discloses a temperature-response-type luminescent gold nano-micelle, a preparation method of the nano-micelle and application of nano-micelle in visual temperature detection. The methodcomprises the following steps that a fluorescent dye and a surfactant are dissolved into an organic solvent and sufficiently and evenly mixed, and the organic solvent is screw-dried; a solvent and sulfydryl micromolecules are added, and sufficient dissolution is conducted; chloroauric acid is added, and a reaction is conducted for 2-10 h at 80-120 DEG C; after the reaction is completed, through dialysis and centrifugal impurity removal, the temperature-response-type luminescent gold nano-micelle is obtained. A synthetic method of the temperature-response-type luminescent gold nano-micelle is simple and low in cost and is easily applied to large-scale industrial production. According to the synthesized temperature-response-type luminescent gold nano-micelle, along with temperature change, obvious change of the fluorescence emitting color can be observed under the ultraviolet light. The temperature-response-type luminescent gold nano-micelle has a series of advantages of being easy and quick to use, high in sensitivity, practicability, universality, repeatability and disturbance-resistant capacity and the like in application.

Description

technical field [0001] The invention relates to the field of functional luminescent nanomaterials, in particular to a temperature-responsive luminescent gold nanomicelle, a preparation method thereof, and an application in visual temperature detection. Background technique [0002] Temperature is a physical quantity that characterizes the degree of hot or cold of an object, and it is one of the most common and important measurement parameters in daily life, scientific research and high-tech development. Miscontrol of temperature may cause a series of problems such as production safety, product quality and food safety, so the significance of accurate temperature sensing and detection in the system is increasing. With the development of science and technology and the improvement of people's living standards, there are more and more abnormal experiments and engineering applications such as high temperature, low temperature and ultra-low temperature, and the requirements for tem...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09K11/06C09K11/58G01N21/64
CPCC09K11/06C09K11/58G01N21/643G01N21/6447
Inventor 刘锦斌马华丽周廷尧
Owner SOUTH CHINA UNIV OF TECH