Product Name
Name：PH probe carbon quantum dot powder
Product Overview
Carbon quantum dots CQDs are quasi spherical amorphous carbon nanocrystals composed of sp2 and sp3 cluster carbon structures, surrounded by abundant oxygen-containing functional groups such as hydroxyl, carbonyl, carboxyl, etc. Their main constituent elements are C, H, O, and N. The luminescence mechanism of CQDs can be mainly attributed to these three types: quantum confinement effect, surface state luminescence, and molecular state luminescence. Carbon quantum dots are composed of C=C and C-C bond cores that are prone to π→π * transitions, as well as various organic molecular functional groups distributed on the surface that are prone to n →π * transitions. The structure and composition of carbon quantum dots result in strong absorption of short wavelength light waves in the ultraviolet range (260-320 nm), accompanied by low-intensity absorption of visible light (400-710 nm).
The preparation methods of carbon quantum dots are divided into top-down method and top-down method. The top-down method is to cut large-sized carbon structural materials through physical or chemical methods, mainly including arc discharge, laser ablation, ultrasonic treatment, and chemical oxidation. The bottom-up approach is to aggregate small molecule precursors into large-sized CQDs through chemical reactions, mainly including water/solvothermal, template method, microwave-assisted, and solid-phase methods.
XF343 pH probe carbon quantum dots were prepared by hydrothermal method and exhibited excellent pH dependence in the pH range of 4-10 solution. As the pH value of the carbon quantum dot solution increased, the color of the solution gradually changed from red to yellow under natural light; At the same time, when the pH of the solution is reversed, the color of the solution under natural light will also recover with the change in pH.
Technical Parameter
Granularity:2-5 nm
Status:Brownish black powder
Product Features
High sensitivity: capable of significant fluorescence response to small pH changes, thereby achieving accurate detection of pH.
Quick response: It can react to pH changes in a short period of time and provide timely feedback on changes in environmental pH.
Good selectivity: It has a specific response to changes in pH value and is less affected by interference from other ions or substances.
Good biocompatibility: low toxicity, minimal impact on normal physiological processes of organisms, suitable for pH detection in organisms.
High stability: It has good photostability and chemical stability, and can maintain stable performance under different experimental conditions.
Application Fields
Intracellular pH monitoring: studying the dynamic changes in pH during physiological processes such as cell metabolism and signal transduction. For example, observing the pH changes of cancer cells at different stages of development provides a basis for the diagnosis and treatment of cancer.
Drug release monitoring: used to monitor the pH triggered drug release process of drug carriers in specific parts of the body (such as tumor tissue), and evaluate the efficiency and effectiveness of drug release.
Biosensor: Construct a biosensor based on pH probe carbon quantum dots to detect pH changes in body fluids (such as blood and urine) for diagnosing diseases or evaluating the health status of the body.
Environmental monitoring: monitoring pH fluctuations in soil, water and other environmental samples, assessing the degree of environmental pollution and the health status of ecosystems.
Food quality testing: detecting pH changes during food processing and storage to ensure the quality and safety of food.
Related Information
Please e-mail for the detailed characterization data.
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