Journal of the American Chemical Society, volume 131, issue 30, pages 10620-10628
A Reduction Pathway in the Synthesis of PbSe Nanocrystal Quantum Dots
1
Chemistry Division and Center for Integrated Nanotechnologies, Los Alamos National Laboratory, Los Alamos, New Mexico 87545
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Publication type: Journal Article
Publication date: 2009-07-01
Quartile SCImago
Q1
Quartile WOS
Q1
Impact factor: 15
ISSN: 00027863, 15205126
General Chemistry
Catalysis
Biochemistry
Colloid and Surface Chemistry
Abstract
Colloidal nanocrystal quantum dots (NQDs) of narrow band gap materials are of substantial general interest because of their unparalleled potential as infrared fluorophores. While PbSe NQDs are a promising class of infrared-active nanocrystals due to high emission quantum yields and a wide useful spectral range, typical synthetic methods are sensitive to a variety of factors, including the influence of solvent/ligand impurities that render reproducibility difficult. In this work, we specifically examine the effects of diphenylphosphine and 1,2-hexadecanediol, as surrogates for putative trioctylphosphine-based reducing impurities, on the synthesis of PbSe NQDs. Specifically, we compare their influence on NQD size, chemical yield, and photoluminescence quantum yield. While both additives substantially increase the chemical yield of the synthesis, they demonstrate markedly different effects on emission quantum yield of the product NQDs. We further examine the effects of reaction temperature and oleic acid concentration on the diol-assisted synthesis. Increased oleic acid concentration led to somewhat higher growth rates and larger NQDs but at the expense of lower chemical yield. Temperature was found to have an even greater effect on growth rate and NQD size. Neither temperature nor oleic acid concentration was found to have noticeable effects on NQD emission quantum yield. Finally, we use numerical simulations to support the conjecture that the increased yield is likely a result of faster monomer formation, consistent with the activation of an additional reaction pathway by the reducing species.
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Citations by publishers
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IOP Publishing
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1 publication, 0.91%
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Autonomous Non-profit Organization Editorial Board of the journal Uspekhi Khimii
1 publication, 0.91%
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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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Joo J. et al. A Reduction Pathway in the Synthesis of PbSe Nanocrystal Quantum Dots // Journal of the American Chemical Society. 2009. Vol. 131. No. 30. pp. 10620-10628.
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Joo J., Pietryga J. M., McGuire J. A., Jeon S. H., Williams D. J., Wang H., Klimov V. I. A Reduction Pathway in the Synthesis of PbSe Nanocrystal Quantum Dots // Journal of the American Chemical Society. 2009. Vol. 131. No. 30. pp. 10620-10628.
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TY - JOUR
DO - 10.1021/ja903445f
UR - https://doi.org/10.1021/ja903445f
TI - A Reduction Pathway in the Synthesis of PbSe Nanocrystal Quantum Dots
T2 - Journal of the American Chemical Society
AU - Jeon, Sea Ho
AU - Williams, Darrick J.
AU - Joo, Jin
AU - Pietryga, Jeffrey M.
AU - McGuire, J. A.
AU - Wang, Hsing-Lin
AU - Klimov, Victor I.
PY - 2009
DA - 2009/07/01 00:00:00
PB - American Chemical Society (ACS)
SP - 10620-10628
IS - 30
VL - 131
SN - 0002-7863
SN - 1520-5126
ER -
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@article{2009_Joo,
author = {Sea Ho Jeon and Darrick J. Williams and Jin Joo and Jeffrey M. Pietryga and J. A. McGuire and Hsing-Lin Wang and Victor I. Klimov},
title = {A Reduction Pathway in the Synthesis of PbSe Nanocrystal Quantum Dots},
journal = {Journal of the American Chemical Society},
year = {2009},
volume = {131},
publisher = {American Chemical Society (ACS)},
month = {jul},
url = {https://doi.org/10.1021/ja903445f},
number = {30},
pages = {10620--10628},
doi = {10.1021/ja903445f}
}
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MLA
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Joo, Jin, et al. “A Reduction Pathway in the Synthesis of PbSe Nanocrystal Quantum Dots.” Journal of the American Chemical Society, vol. 131, no. 30, Jul. 2009, pp. 10620-10628. https://doi.org/10.1021/ja903445f.