Carbon dots with high fluorescent quantum yield, and application thereof in fluorescent color development
A technology of fluorescence quantum yield and carbon dots, which is applied in the application field of fluorescent carbon nanomaterials, can solve problems such as rare research, and achieve the effects of simple post-processing, overcoming easy photobleaching, and low cost.
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
Image
Examples
Embodiment 1
[0027] 1. Preparation of fluorescent carbon dots with high quantum yield
[0028] Blend 4mmol of citric acid and 1mmol of ethylenediamine in 5mL of deionized water and transfer it to a reaction kettle for hydrothermal reaction at 200°C for 7 hours. After the reaction, the reaction kettle was cooled to room temperature to obtain quantum The resulting carbon dot aqueous solution was spin-dried with a rotary evaporator, and further dried in a vacuum oven to obtain a 4:1 carbon dot solution.
[0029] 2.4:1 carbon dots as fluorescent ink for handwriting application
[0030] Configure 1mg / mL carbon dot aqueous solution as fluorescent ink, pour it into a commercial pen, and use the pen to write. The "fluorescent" writing cannot be observed under sunlight ( figure 1 a), only observed under UV light ( figure 1 b).
Embodiment 2
[0032] 1. Preparation of fluorescent carbon dots with high quantum yield
[0033] Blend 5mmol of citric acid and 5mmol of ethylenediamine in 10mL of deionized water and transfer to a reaction kettle for hydrothermal reaction at 200°C for 7 hours. After the reaction, the reaction kettle was cooled to room temperature to obtain quantum The carbon dot aqueous solution of productive rate, the carbon dot aqueous solution obtained is poured into the dialysis bag that molecular weight is 3500 and is dialyzed for 48h, gets the external liquid of dialysis and is spin-dried with a rotary evaporator, and further puts into a vacuum oven to dry, and obtains 5: 5 carbon dots.
[0034] 2.5:5 carbon dots as fluorescent ink for handwriting application
[0035] Configure 1mg / mL carbon dot aqueous solution as fluorescent ink, pour it into a commercial pen, and use the pen to write. The "fluorescent" writing cannot be observed under sunlight ( figure 1 a), only observed under UV light ( figure...
Embodiment 3
[0037] 1. Preparation of fluorescent carbon dots with high quantum yield
[0038] Blend 1mmol of citric acid and 4mmol of ethylenediamine in 5mL of deionized water and transfer it to a reaction kettle for hydrothermal reaction at 200°C for 7 hours. After the reaction, the reaction kettle was cooled to room temperature to obtain quantum The resulting carbon dot aqueous solution was spin-dried with a rotary evaporator, and further dried in a vacuum oven to obtain a 1:4 carbon dot solution.
[0039] 2.1:4 carbon dots as fluorescent ink for handwriting application
[0040] Configure 1mg / mL carbon dot aqueous solution as fluorescent ink, pour it into a commercial pen, and use the pen to write. The "fluorescent" writing cannot be observed under sunlight ( figure 1 a), only observed under UV light ( figure 1 d).
PUM
Login to view more Abstract
Description
Claims
Application Information
Login to view more - 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