Hollow fluorescent carbon quantum dots as well as preparation method and application thereof
A carbon quantum dot and fluorescence technology, which is applied in the field of hollow fluorescent carbon quantum dots and their preparation, can solve the problems of unfavorable continuous and large-scale production of carbon quantum dots, low fluorescence quantum yield of carbon quantum dots, non-renewable energy, etc. Conditions require no energy consumption, good solubility and dispersion, stable optical properties
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
Image
Examples
Example Embodiment
[0036] Example 1
[0037] Step 1. Weigh 1.0g glucose and place it in a glass container, add 6mL ethylenediamine, stir well, and then gradually add 4mL concentrated phosphoric acid to obtain a dark brown viscous substance;
[0038] Step 2. After the glass container is naturally cooled, add 20 mL of secondary water to it, stir to dissolve to obtain a dark brown solution, filter to remove insolubles to obtain a clear dark brown solution, and remove impurities by dialysis to obtain pure hollow carbon quantum dots. Aqueous solution
[0039] In step 3, the hollow carbon quantum dots are freeze-dried to obtain the hollow carbon quantum dots with a relative quantum yield (using quinine sulfate as a standard) of 9.4%.
[0040] Characterization and application see Figure 1-13 .
Example Embodiment
[0041] Example 2
[0042] Step 1. Weigh 1.0g of sucrose in a glass container, add 6mL of ethylenediamine, stir well, and then gradually add 4mL of concentrated phosphoric acid to obtain a dark brown viscous substance;
[0043] Step 2. After the glass container is naturally cooled, add 22 mL of secondary water to it, and the rest is the same as in Example 1;
[0044] The relative quantum yield (using quinine sulfate as the standard) is 8.7%.
Example Embodiment
[0045] Example 3
[0046] Step 1. Weigh 1.0g fructose into a glass container, add 6mL ethylenediamine, stir well, and then gradually add 4mL concentrated phosphoric acid to obtain a dark brown viscous substance;
[0047] Step 2. After the glass container is naturally cooled, add 25 mL of secondary water to it, and the rest is the same as in Example 1;
[0048] The relative quantum yield (using quinine sulfate as the standard) is 4.2%.
PUM
Property | Measurement | Unit |
---|---|---|
Particle size | aaaaa | aaaaa |
Abstract
Description
Claims
Application Information
- R&D Engineer
- R&D Manager
- IP Professional
- Industry Leading Data Capabilities
- Powerful AI technology
- Patent DNA Extraction
Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.
© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap