Nanodiamond coating by polyethylenimine for optical limitation
| Autor: | M. Guerchoux, L. Merlat, Philippe Fioux, Olivier Muller, Vincent Pichot, Denis Spitzer, Mazheva Guillevic |
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| Rok vydání: | 2019 |
| Předmět: |
Materials science
Nanoparticle 02 engineering and technology engineering.material 010402 general chemistry 01 natural sciences chemistry.chemical_compound Coating Materials Chemistry Zeta potential Surface charge Electrical and Electronic Engineering Nanodiamond chemistry.chemical_classification Polyethylenimine Mechanical Engineering Cationic polymerization General Chemistry Polymer 021001 nanoscience & nanotechnology 0104 chemical sciences Electronic Optical and Magnetic Materials Chemical engineering chemistry engineering 0210 nano-technology |
| Zdroj: | Diamond and Related Materials. 95:55-59 |
| ISSN: | 0925-9635 |
| Popis: | Polyethylenimine (PEI) is used to elaborate detonation nanodiamonds coated with a polymer material. Evolution of the nanodiamonds surface charge depending on the PEI concentration is revealed by a zeta potential study. While the surface charge of the nanodiamond is negative due to its oxygenated functional groups, the cationic polymer allows reversing it to a positive one. Spectroscopy characterizations are used to investigate the PEI interaction with the nanodiamonds and to estimate the very small thickness of the PEI layer on the nanodiamonds surface. The oxygenated functional groups of the nanoparticles interact electrostatically with the PEI amine groups. The good performances of the non-linear optical properties of this material are demonstrated at a wavelength of 1064 nm. |
| Databáze: | OpenAIRE |
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