In situ generation of carbon dots within a polymer matrix
| Autor: | Diogo Fernandes, Luis Estevez, Antonios Kelarakis, Marta J. Krysmann, K.A. Heslop |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2020 |
| Předmět: |
chemistry.chemical_classification
Polypropylene F990 Nanocomposite Materials science Polymers and Plastics Organic Chemistry Nanoparticle 02 engineering and technology Polymer Thermal treatment Polyethylene glycol Polyethylene 010402 general chemistry 021001 nanoscience & nanotechnology 01 natural sciences 0104 chemical sciences Matrix (chemical analysis) chemistry.chemical_compound chemistry Chemical engineering Materials Chemistry 0210 nano-technology |
| ISSN: | 0032-3861 |
| Popis: | We disclose a green, cost and time effective approach to impart photoluminescent properties to a range of polymeric materials, an otherwise solvent-intensive and tedious process. Our strategy relies on the thermal treatment of ethanolamine (a carbon and nitrogen-rich precursor) well dispersed within a polymer matrix and gives rise to fluorescent C-dot based nanocomposites, without compromising the physicochemical characteristics of the matrix. The strategy affords at least 20% conversion of the precursor towards fluorescent nanoparticles, eliminates the use of toxic chemicals and is thoroughly compatible with melt processing technologies routinely used in industry. While we focus here on polyethylene (PE), polypropylene (PP) and polyethylene glycol (PEG) nanocomposites, the approach is general and applicable to a variety of thermally stable polymers. The C-dots formed in situ within the PEG matrix have diameters in the range 1–40 nm (as revealed by TEM) and exhibit quantum yield 11% in water compared to 3% for the PE-derived nanoparticles. |
| Databáze: | OpenAIRE |
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