Journal of the American Chemical Society, volume 132, issue 32, pages 10973-10975
Mysteries of TOPSe Revealed: Insights into Quantum Dot Nucleation
1
Department of Chemistry and the Institute of Optics, University of Rochester, Rochester, New York 14627
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Publication type: Journal Article
Publication date: 2010-07-26
Quartile SCImago
Q1
Quartile WOS
Q1
Impact factor: 15
ISSN: 00027863, 15205126
General Chemistry
Catalysis
Biochemistry
Colloid and Surface Chemistry
Abstract
We have investigated the reaction mechanism responsible for QD nucleation using optical absorption and nuclear magnetic resonance spectroscopies. For typical II-VI and IV-VI quantum dot (QD) syntheses, pure tertiary phosphine selenide sources (e.g., trioctylphosphine selenide (TOPSe)) were surprisingly found to be unreactive with metal carboxylates and incapable of yielding QDs. Rather, small quantities of secondary phosphines, which are impurities in tertiary phosphines, are entirely responsible for the nucleation of QDs; their low concentrations account for poor synthetic conversion yields. QD yields increase to nearly quantitative levels when replacing TOPSe with a stoiciometric amount of a secondary phosphine chalcogenide such as diphenylphosphine selenide. Based on our observations, we have proposed potential monomer identities, reaction pathways, and transition states and believe this mechanism to be universal to all II-VI and IV-VI QDs synthesized using phosphine based methods.
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Citations by publishers
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100
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American Chemical Society (ACS)
93 publications, 49.21%
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Wiley
27 publications, 14.29%
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Royal Society of Chemistry (RSC)
22 publications, 11.64%
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Elsevier
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Springer Nature
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Canadian Science Publishing
1 publication, 0.53%
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Materials Research Society
1 publication, 0.53%
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Cambridge University Press
1 publication, 0.53%
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Korean Society of Industrial Engineering Chemistry
1 publication, 0.53%
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Optical Society of America
1 publication, 0.53%
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Trans Tech Publications
1 publication, 0.53%
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Autonomous Non-profit Organization Editorial Board of the journal Uspekhi Khimii
1 publication, 0.53%
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- We do not take into account publications without a DOI.
- Statistics recalculated only for publications connected to researchers, organizations and labs registered on the platform.
- Statistics recalculated weekly.
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Evans C. M., Evans M. E., Krauss T. Mysteries of TOPSe Revealed: Insights into Quantum Dot Nucleation // Journal of the American Chemical Society. 2010. Vol. 132. No. 32. pp. 10973-10975.
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Evans C. M., Evans M. E., Krauss T. Mysteries of TOPSe Revealed: Insights into Quantum Dot Nucleation // Journal of the American Chemical Society. 2010. Vol. 132. No. 32. pp. 10973-10975.
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TY - JOUR
DO - 10.1021/ja103805s
UR - https://doi.org/10.1021/ja103805s
TI - Mysteries of TOPSe Revealed: Insights into Quantum Dot Nucleation
T2 - Journal of the American Chemical Society
AU - Evans, Christopher M
AU - Evans, Meagan E
AU - Krauss, Todd
PY - 2010
DA - 2010/07/26 00:00:00
PB - American Chemical Society (ACS)
SP - 10973-10975
IS - 32
VL - 132
SN - 0002-7863
SN - 1520-5126
ER -
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@article{2010_Evans,
author = {Christopher M Evans and Meagan E Evans and Todd Krauss},
title = {Mysteries of TOPSe Revealed: Insights into Quantum Dot Nucleation},
journal = {Journal of the American Chemical Society},
year = {2010},
volume = {132},
publisher = {American Chemical Society (ACS)},
month = {jul},
url = {https://doi.org/10.1021/ja103805s},
number = {32},
pages = {10973--10975},
doi = {10.1021/ja103805s}
}
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Evans, Christopher M., et al. “Mysteries of TOPSe Revealed: Insights into Quantum Dot Nucleation.” Journal of the American Chemical Society, vol. 132, no. 32, Jul. 2010, pp. 10973-10975. https://doi.org/10.1021/ja103805s.