Solvation of quantum dots in 1-alkyl-1-methylpyrrolidinium ionic liquids: toward stably luminescent composites
| Autor: | Shohei Katao, Fumio Asanoma, Tsuyoshi Kawai, Takuya Nakashima, Kasumi Shigekawa |
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| Rok vydání: | 2020 |
| Předmět: |
Nanoparticle
02 engineering and technology 010402 general chemistry 01 natural sciences chemistry.chemical_compound Polymer chemistry General Materials Science word Materials of engineering and construction. Mechanics of materials Organic and Soft Materials (Colloids Liquid Crystals Gel Polymers) 103 Composites Alkyl ionic liquid chemistry.chemical_classification Ligand Solvation Cationic polymerization semiconductor 204 Optics / Optical applications 021001 nanoscience & nanotechnology 0104 chemical sciences chemistry Quantum dot Ionic liquid TA401-492 nanoparticles photoluminescence lipids (amino acids peptides and proteins) solvation 0210 nano-technology Luminescence TP248.13-248.65 Biotechnology |
| Zdroj: | Science and Technology of Advanced Materials, Vol 21, Iss 1, Pp 187-194 (2020) Science and Technology of Advanced Materials |
| ISSN: | 1878-5514 1468-6996 |
| DOI: | 10.1080/14686996.2020.1735923 |
| Popis: | CdTe nanoparticles capped with a cationic thiolate ligand were stably dispersed in ionic liquids, 1-alkyl-1-methyl-pyrrolidinium bis(trifluoromethanesulfonyl)amides with an alkyl group of n-propyl, butyl and octyl-chain, and in an ionic plastic crystal, 1-ethyl-1-methylpyrrolidinium bis(trifluoromethanesulfonyl)amide. Dispersion behavior of CdTe nanoparticles in these ionic media was evaluated, in which the solvation of nanoparticles by the ionic components was particularly interested. The ionic media showed alkyl-chain length-dependent solvation behavior, which was suggested by the thermal analysis of nanocomposites. The longer alkyl-chains led to the greater decrease in the thermal melting enthalpy of ionic media with the introduction of nanoparticles. The ionic liquid with an octyl-chain, which is considered to form a thicker solvation layer, afforded better emission durability of CdTe nanoparticles compared to the ionic liquid with a shorter alkyl chain. Graphical Abstract |
| Databáze: | OpenAIRE |
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