Green-orange-red three-color fluorescent graphene quantum dot preparation method
A graphene quantum dot, green-orange-red technology, applied in graphene, chemical instruments and methods, luminescent materials, etc., can solve problems such as limiting the application of long-wavelength fluorescent graphene quantum dots, and achieve industrialization promotion, excellent optical properties, The effect of easy separation and purification
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
Image
Examples
Embodiment 1
[0029] Example 1 Preparation of graphene quantum dots with red fluorescence
[0030] The specific preparation steps of this embodiment are as follows:
[0031] (1) At room temperature, measure 240 ml of concentrated nitric acid and 80 ml of concentrated sulfuric acid and add them to a 500 ml round bottom flask, and stir evenly;
[0032] (2) Weigh 4 g of pyrene, add pyrene to the mixed acid under stirring, nitrate and reflux in an oil bath at 80°C for 24-48 h, take it out after cooling;
[0033] (3) Slowly add the reactants obtained in the above steps into 2000 ml of deionized water, filter with a water filter to remove the acid solution, then wash with water until the filtered solution is neutral, and dry the obtained solid in vacuum at 60 °C for 48 h. remove water;
[0034] (4) Then take the dried solid and add it to 40 ml N,N-dimethylformamide and ultrasonically disperse it for 2 h to form a uniform suspension, then immediately put 40 ml of the suspension into 80 ml polyte...
Embodiment 2
[0036] Example 2 Preparation of graphene quantum dots with orange fluorescence
[0037] The specific preparation of this embodiment is as follows:
[0038] (1) At room temperature, measure 240 ml of concentrated nitric acid and 80 ml of concentrated sulfuric acid and add them to a 500 ml round bottom flask, and stir evenly;
[0039] (2) Weigh 4 g of pyrene, add pyrene to the mixed acid under stirring, nitrate and reflux in an oil bath at 80°C for 24-48 h, take it out after cooling;
[0040] (3) Slowly add the reactants obtained in the above steps into 2000 ml of deionized water, filter with a water filter to remove the acid solution, then wash with water until the filtered solution is neutral, and dry the obtained solid in vacuum at 60 °C for 48 h. remove water;
[0041] (4) Then add the dried solid to 40 ml of toluene and ultrasonically disperse it for 2 h to form a uniform suspension, then immediately put 40 ml of the suspension into a 80 ml polytetrafluoroethylene-lined r...
Embodiment 3
[0043] Example 3 Preparation of graphene quantum dots with green fluorescence
[0044] The specific preparation of this embodiment is as follows:
[0045] (1) At room temperature, measure 240 ml of concentrated nitric acid and 80 ml of concentrated sulfuric acid and add them to a 500 ml round bottom flask, and stir evenly;
[0046] (2) Weigh 4 g of pyrene, add pyrene to the mixed acid under stirring, nitrate and reflux in an oil bath at 80°C for 24-48 h, take it out after cooling;
[0047] (3) Slowly add the reactants obtained in the above steps into 2000 ml of deionized water, filter with a water filter to remove the acid solution, then wash with water until the filtered solution is neutral, and dry the obtained solid in vacuum at 60 °C for 48 h. remove water;
[0048] (4) Then take the dried solid and add it to 40 ml of ethanol and ultrasonically disperse it for 2 h to form a uniform suspension, then immediately put 40 ml of the suspension into a 80 ml polytetrafluoroethyl...
PUM
Property | Measurement | Unit |
---|---|---|
concentration | aaaaa | aaaaa |
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, Popular Technical Reports.
© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com