Preparation method and application of sensor array based on luminous carbon dots

By synthesizing carbon dots with targeted recognition functions and modifying and doping, the shortcomings of the luminescent carbon dot sensor array in terms of selectivity and sensitivity are solved, and accurate identification and high accuracy detection of target substances are achieved.

CN119666795AInactive Publication Date: 2025-03-21贵阳康养职业大学
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Patent Information

Application Number
CN202411599603.8
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2024-11-11
Publication Date
2025-03-21
Estimated Expiration
Not applicable · inactive patent

AI Technical Summary

Technical Problem

The existing luminescent carbon dot sensor arrays have poor selectivity and sensitivity to target substances during preparation, and are easily disturbed by other substances during detection, resulting in poor detection accuracy.

Method used

By synthesizing carbon dots with target recognition functions, using target substances or their analogs as template molecules, the carbon dots grow around the template molecules during the carbon dot synthesis process to form carbon dots with specific recognition capabilities, and improve the selectivity and fluorescence performance of carbon dots through modification and doping techniques.

Benefits of technology

It significantly improves the selectivity and sensitivity of the sensor to the target substance, reduces interference from other substances, improves the accuracy and selectivity of detection, and protects the fluorescence performance of the carbon dots.

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Abstract

The invention discloses a preparation method and application of a sensor array based on luminous carbon dots, and relates to the technical field of sensors, the preparation method comprises the following steps: preparing a carbon source which comprises a precursor containing a targeting functional group or a biomolecule derived carbon source, preparing the luminous carbon dots through a chemical synthesis or physical method, modifying the surfaces of the carbon dots, and preparing the sensor array based on the luminous carbon dots. A core-shell structure is added on the surface of a carbon dot by using an in-situ growth method or a layer-by-layer self-assembly method, the carbon dot with the added core-shell structure is fixed on a substrate of a sensor array, and a performance test is carried out. By synthesizing the carbon dots with a targeted recognition function, the selectivity and the sensitivity of the sensor to a target substance can be remarkably improved, and in the synthesis process, the carbon dots can generate specific interaction with the target substance by adjusting factors such as the structure, the shape, the size and the surface chemical property of the carbon dots; therefore, accurate identification of the target substance is realized, and detection of the marker is realized.
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