Carbon quantum dot-copper ion fluorescent probe and preparation method and application thereof

A technology of carbon quantum dots and fluorescent probes, which is applied in the field of nanomaterial preparation, can solve problems such as electrode oxidation, carbon quantum dot stability damage, and limitations, and achieve low cost, simplified experimental conditions and difficulty, and improved application effects
CN107573933AActive Publication Date: 2018-01-12LIAONING UNIVERSITY
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
LIAONING UNIVERSITY
Publication Date
2018-01-12

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Abstract

The invention relates to a carbon quantum dot-copper ion fluorescent probe and a preparation method and application thereof. The method includes that carbon quantum dots with strong fluorescence are synthesized by the aid of a microwave hydrothermal method, fluorescence strength of the carbon quantum dots are greatly reduced by the aid of copper ions, the copper ions are composited on surfaces ofthe carbon quantum dots, surface energy is transferred, CQDs / Cu<2+> with weak fluorescence is formed, a glucose solution is added, pH value is adjusted to 7, heating is performed at the temperature of80DEG C, glucose and the copper ions undergo 'copper mirror reaction' to be oxidized to gluconic acid, and the copper ions are reduced to be precipitated to be Cu2O2. The fluorescence spectrum test shows that after the glucose solution is added, glucose is catalyzed and oxidized through the copper ions on the carbon quantum dots CQDs for reaction and is removed from surfaces of the CQDs, and thestrong fluorescence on the CQDs is restored. The carbon quantum dot-copper ion fluorescent probe based CQDs / Cu<2+> is applicable to effective detection of the glucose under non-enzymatic environment.
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Description

technical field

[0001] The invention belongs to the technical field of nanomaterial preparation, and in particular relates to a water-soluble carbon quantum dot-copper ion fluorescent probe prepared by using citric acid as a carbon source and urea as a nitrogen source by a microwave hydrothermal synthesis method, and its rapid non-enzymatic Applications in the detection of glucose in the environment. Background technique

[0002] With the rapid economic development and the acceleration of the industrialization process, as well as the changes in the lifestyle and the acceleration of the aging process, the prevalence of diabetes in my country is on the rise, and it has become another serious hazard to the people after cardiovascular and cerebrovascular diseases and tumors. Health important chronic non-communicable diseases. According to WHO estimates, from 2005 to 2015, the economic loss caused by diabetes and related cardiovascular diseases in China reached 557.7 billion US d...

Claims

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