Selenium reduction pathways in the colloidal synthesis of CdSe nanoplatelets
- Author
- Alessio Di Giacomo, Alina Myslovska (UGent) , Vic De Roo, Jan Goeman (UGent) , José Martins (UGent) and Iwan Moreels (UGent)
- Organization
- Project
-
- Cofunding core facility - NMR Expertise Centre
- High resolution NMR Centre – a centre of expertise for structure characterization and molecular analysis in chemical, biochemical, biomedical and materials sciences at Ghent University)
- Application of advanced and diffusion based Magnetic Resonance techniques as a new tool to investigate nanoparticles and brain biochemistry
- HITEC - High Temperature Exciton Condensation in 2D Colloidal Nanoplatelets
- PHOCONA (Photonics in Flatland: Band Structure Engineering of 2D Excitons in Fluorescent Colloidal Nanomaterials)
- Abstract
- Several established procedures are now available to prepare zinc blende CdSe nanoplatelets. While these protocols allow for detailed control over both thickness and lateral dimensions, the chemistry behind their formation is yet to be unraveled. In this work, we discuss the influence of the solvent on the synthesis of nanoplatelets. We confirmed that the presence of double bonds, as is the case for 1-octadecene, plays a key role in the evolution of nanoplatelets, through the isomerization of the alkene, as confirmed by nuclear magnetic resonance spectroscopy and mass spectrometry. Consequently, 1-octadecene can be replaced as a solvent (or solvent mixture), however, only by one that also contains alpha protons to C 00000000 00000000 00000000 00000000 11111111 00000000 11111111 00000000 00000000 00000000 C double bonds. We confirm this via synthesis of nanoplatelets in hexadecane spiked with a small amount of 1-octadecene, and in the aromatic solvent 1,2,3,4-tetrahydronaphthalene (tetralin). At the same time, the chemical reaction leading to the formation of nanoplatelets occurs to some extent in saturated solvents. A closer examination revealed that an alternative formation pathway is possible, through interaction of carboxylic acids, such as octanoic acid, with selenium. Next to shedding more light on the synthesis of CdSe nanoplatelets, fundamental understanding of the precursor chemistry paves the way to use optimized solvent admixtures as an additional handle to control the nanoplatelet synthesis, as well as to reduce potential self-polymerization hurdles observed with 1-octadecene.
- Keywords
- PHOSPHINE-FREE SYNTHESIS, THRESHOLD STIMULATED-EMISSION, QUANTUM DOTS, SEMICONDUCTOR NANOCRYSTALS, GROWTH-KINETICS, PRECURSORS, SE
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Citation
Please use this url to cite or link to this publication: http://hdl.handle.net/1854/LU-01HTQA8MJKZ2M00420V1KJWQ29
- MLA
- Di Giacomo, Alessio, et al. “Selenium Reduction Pathways in the Colloidal Synthesis of CdSe Nanoplatelets.” NANOSCALE, vol. 16, no. 12, 2024, pp. 6268–77, doi:10.1039/d3nr05157a.
- APA
- Di Giacomo, A., Myslovska, A., De Roo, V., Goeman, J., Martins, J., & Moreels, I. (2024). Selenium reduction pathways in the colloidal synthesis of CdSe nanoplatelets. NANOSCALE, 16(12), 6268–6277. https://doi.org/10.1039/d3nr05157a
- Chicago author-date
- Di Giacomo, Alessio, Alina Myslovska, Vic De Roo, Jan Goeman, José Martins, and Iwan Moreels. 2024. “Selenium Reduction Pathways in the Colloidal Synthesis of CdSe Nanoplatelets.” NANOSCALE 16 (12): 6268–77. https://doi.org/10.1039/d3nr05157a.
- Chicago author-date (all authors)
- Di Giacomo, Alessio, Alina Myslovska, Vic De Roo, Jan Goeman, José Martins, and Iwan Moreels. 2024. “Selenium Reduction Pathways in the Colloidal Synthesis of CdSe Nanoplatelets.” NANOSCALE 16 (12): 6268–6277. doi:10.1039/d3nr05157a.
- Vancouver
- 1.Di Giacomo A, Myslovska A, De Roo V, Goeman J, Martins J, Moreels I. Selenium reduction pathways in the colloidal synthesis of CdSe nanoplatelets. NANOSCALE. 2024;16(12):6268–77.
- IEEE
- [1]A. Di Giacomo, A. Myslovska, V. De Roo, J. Goeman, J. Martins, and I. Moreels, “Selenium reduction pathways in the colloidal synthesis of CdSe nanoplatelets,” NANOSCALE, vol. 16, no. 12, pp. 6268–6277, 2024.
@article{01HTQA8MJKZ2M00420V1KJWQ29,
abstract = {{Several established procedures are now available to prepare zinc blende CdSe nanoplatelets. While these protocols allow for detailed control over both thickness and lateral dimensions, the chemistry behind their formation is yet to be unraveled. In this work, we discuss the influence of the solvent on the synthesis of nanoplatelets. We confirmed that the presence of double bonds, as is the case for 1-octadecene, plays a key role in the evolution of nanoplatelets, through the isomerization of the alkene, as confirmed by nuclear magnetic resonance spectroscopy and mass spectrometry. Consequently, 1-octadecene can be replaced as a solvent (or solvent mixture), however, only by one that also contains alpha protons to C 00000000 00000000 00000000 00000000 11111111 00000000 11111111 00000000 00000000 00000000 C double bonds. We confirm this via synthesis of nanoplatelets in hexadecane spiked with a small amount of 1-octadecene, and in the aromatic solvent 1,2,3,4-tetrahydronaphthalene (tetralin). At the same time, the chemical reaction leading to the formation of nanoplatelets occurs to some extent in saturated solvents. A closer examination revealed that an alternative formation pathway is possible, through interaction of carboxylic acids, such as octanoic acid, with selenium. Next to shedding more light on the synthesis of CdSe nanoplatelets, fundamental understanding of the precursor chemistry paves the way to use optimized solvent admixtures as an additional handle to control the nanoplatelet synthesis, as well as to reduce potential self-polymerization hurdles observed with 1-octadecene.}},
author = {{Di Giacomo, Alessio and Myslovska, Alina and De Roo, Vic and Goeman, Jan and Martins, José and Moreels, Iwan}},
issn = {{2040-3364}},
journal = {{NANOSCALE}},
keywords = {{PHOSPHINE-FREE SYNTHESIS,THRESHOLD STIMULATED-EMISSION,QUANTUM DOTS,SEMICONDUCTOR NANOCRYSTALS,GROWTH-KINETICS,PRECURSORS,SE}},
language = {{eng}},
number = {{12}},
pages = {{6268--6277}},
title = {{Selenium reduction pathways in the colloidal synthesis of CdSe nanoplatelets}},
url = {{http://doi.org/10.1039/d3nr05157a}},
volume = {{16}},
year = {{2024}},
}
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