The trouble with ODE : polymerization during nanocrystal synthesis
- Author
- Evert Dhaene, Jonas Billet, Ellie Bennett, Isabel Van Driessche (UGent) and Jonathan De Roo (UGent)
- Organization
- Abstract
- 1-Octadecene is a widely used solvent for high temperature nanocrystal synthesis (120-320 degrees C). Here, we show that 1-octadecene spontaneously polymerizes under these conditions, and the resulting poly(1-octadecene) has a comparable solubility and size to nanocrystals stabilized by hydrophobic ligands. Typical purification procedures (precipitation/redispersion cycles or size exclusion chromatography) fail to separate the poly(1-octadecene) impurity from the nanocrystal product. To avoid formation of poly(1-octadecene), we replace 1-octadecene with saturated, aliphatic solvents. Alternatively, the nanocrystals' native ligands are exchanged for polar ligands, leading to significant solubility differences between nanocrystals and poly(1-octadecene), therefore allowing isolation of pure nanocrystals, free from polymer impurities. These results will help design superior syntheses and improve nanocrystal purity, an important factor in many applications.
- Keywords
- Quantum dots, nanoparticles, octadecene, surface chemistry, ONE-POT SYNTHESIS, OCTYLPHOSPHINE OXIDE TOPO, PHOSPHINE-FREE SYNTHESIS, QUANTUM DOTS, SURFACE-CHEMISTRY, HIGH-QUALITY, LIGANDS, CDSE, SIZE, IDENTIFICATION
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Citation
Please use this url to cite or link to this publication: http://hdl.handle.net/1854/LU-8628934
- MLA
- Dhaene, Evert, et al. “The Trouble with ODE : Polymerization during Nanocrystal Synthesis.” NANO LETTERS, vol. 19, no. 10, 2019, pp. 7411–17, doi:10.1021/acs.nanolett.9b03088.
- APA
- Dhaene, E., Billet, J., Bennett, E., Van Driessche, I., & De Roo, J. (2019). The trouble with ODE : polymerization during nanocrystal synthesis. NANO LETTERS, 19(10), 7411–7417. https://doi.org/10.1021/acs.nanolett.9b03088
- Chicago author-date
- Dhaene, Evert, Jonas Billet, Ellie Bennett, Isabel Van Driessche, and Jonathan De Roo. 2019. “The Trouble with ODE : Polymerization during Nanocrystal Synthesis.” NANO LETTERS 19 (10): 7411–17. https://doi.org/10.1021/acs.nanolett.9b03088.
- Chicago author-date (all authors)
- Dhaene, Evert, Jonas Billet, Ellie Bennett, Isabel Van Driessche, and Jonathan De Roo. 2019. “The Trouble with ODE : Polymerization during Nanocrystal Synthesis.” NANO LETTERS 19 (10): 7411–7417. doi:10.1021/acs.nanolett.9b03088.
- Vancouver
- 1.Dhaene E, Billet J, Bennett E, Van Driessche I, De Roo J. The trouble with ODE : polymerization during nanocrystal synthesis. NANO LETTERS. 2019;19(10):7411–7.
- IEEE
- [1]E. Dhaene, J. Billet, E. Bennett, I. Van Driessche, and J. De Roo, “The trouble with ODE : polymerization during nanocrystal synthesis,” NANO LETTERS, vol. 19, no. 10, pp. 7411–7417, 2019.
@article{8628934,
abstract = {{1-Octadecene is a widely used solvent for high temperature nanocrystal synthesis (120-320 degrees C). Here, we show that 1-octadecene spontaneously polymerizes under these conditions, and the resulting poly(1-octadecene) has a comparable solubility and size to nanocrystals stabilized by hydrophobic ligands. Typical purification procedures (precipitation/redispersion cycles or size exclusion chromatography) fail to separate the poly(1-octadecene) impurity from the nanocrystal product. To avoid formation of poly(1-octadecene), we replace 1-octadecene with saturated, aliphatic solvents. Alternatively, the nanocrystals' native ligands are exchanged for polar ligands, leading to significant solubility differences between nanocrystals and poly(1-octadecene), therefore allowing isolation of pure nanocrystals, free from polymer impurities. These results will help design superior syntheses and improve nanocrystal purity, an important factor in many applications.}},
author = {{Dhaene, Evert and Billet, Jonas and Bennett, Ellie and Van Driessche, Isabel and De Roo, Jonathan}},
issn = {{1530-6984}},
journal = {{NANO LETTERS}},
keywords = {{Quantum dots,nanoparticles,octadecene,surface chemistry,ONE-POT SYNTHESIS,OCTYLPHOSPHINE OXIDE TOPO,PHOSPHINE-FREE SYNTHESIS,QUANTUM DOTS,SURFACE-CHEMISTRY,HIGH-QUALITY,LIGANDS,CDSE,SIZE,IDENTIFICATION}},
language = {{eng}},
number = {{10}},
pages = {{7411--7417}},
title = {{The trouble with ODE : polymerization during nanocrystal synthesis}},
url = {{http://doi.org/10.1021/acs.nanolett.9b03088}},
volume = {{19}},
year = {{2019}},
}
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