Journal of the American Chemical Society, volume 132, issue 29, pages 10195-10201
Utilizing Self-Exchange To Address the Binding of Carboxylic Acid Ligands to CdSe Quantum Dots
Publication type: Journal Article
Publication date: 2010-07-07
Quartile SCImago
Q1
Quartile WOS
Q1
Impact factor: 15
ISSN: 00027863, 15205126
General Chemistry
Catalysis
Biochemistry
Colloid and Surface Chemistry
Abstract
We use solution NMR techniques to analyze the organic/inorganic interface of CdSe quantum dots (Q-CdSe) synthesized using oleic acid as a surfactant. It is shown that the resulting Q-CdSe are stabilized by tightly bound oleic acid species that only exchange upon addition of free oleic acid. The NMR analysis points toward a two-step exchange mechanism where free ligands are initially physisorbed within the ligand shell to end up as bound, chemisorbed ligands in a second step. Importantly, we find that every ligand is involved in this exchange process. By addition of oleic acid with a deuterated carboxyl headgroup, we demonstrate that the bound ligands are oleate ions and not oleic acid molecules. This explains why a dynamic adsorption/desorption equilibrium only occurs in the presence of excess free oleic acid, which donates the required proton. Comparing the number of oleate ligands to the excess cadmium per CdSe quantum dot, we find a ratio of 2:1. This completes the picture of Q-CdSe as organic/inorganic entities where the surface excess of Cd(2+) is balanced by a double amount of oleate ligands, yielding overall neutral nanoparticles.
Top-30
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Citations by publishers
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American Chemical Society (ACS)
180 publications, 56.25%
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Royal Society of Chemistry (RSC)
41 publications, 12.81%
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Elsevier
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17 publications, 5.31%
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4 publications, 1.25%
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4 publications, 1.25%
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4 publications, 1.25%
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2 publications, 0.63%
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2 publications, 0.63%
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American Vacuum Society
1 publication, 0.31%
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Frontiers Media S.A.
1 publication, 0.31%
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Technical Association of Photopolymers
1 publication, 0.31%
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Trans Tech Publications
1 publication, 0.31%
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Autonomous Non-profit Organization Editorial Board of the journal Uspekhi Khimii
1 publication, 0.31%
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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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Fritzinger B. et al. Utilizing Self-Exchange To Address the Binding of Carboxylic Acid Ligands to CdSe Quantum Dots // Journal of the American Chemical Society. 2010. Vol. 132. No. 29. pp. 10195-10201.
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Fritzinger B., Capek R. K., Lambert K., Martins J. L., Hens Z. Utilizing Self-Exchange To Address the Binding of Carboxylic Acid Ligands to CdSe Quantum Dots // Journal of the American Chemical Society. 2010. Vol. 132. No. 29. pp. 10195-10201.
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TY - JOUR
DO - 10.1021/ja104351q
UR - https://doi.org/10.1021/ja104351q
TI - Utilizing Self-Exchange To Address the Binding of Carboxylic Acid Ligands to CdSe Quantum Dots
T2 - Journal of the American Chemical Society
AU - Fritzinger, Bernd
AU - Capek, Richard K
AU - Lambert, Karel
AU - Martins, Jose Luri
AU - Hens, Zeger
PY - 2010
DA - 2010/07/07 00:00:00
PB - American Chemical Society (ACS)
SP - 10195-10201
IS - 29
VL - 132
SN - 0002-7863
SN - 1520-5126
ER -
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@article{2010_Fritzinger,
author = {Bernd Fritzinger and Richard K Capek and Karel Lambert and Jose Luri Martins and Zeger Hens},
title = {Utilizing Self-Exchange To Address the Binding of Carboxylic Acid Ligands to CdSe Quantum Dots},
journal = {Journal of the American Chemical Society},
year = {2010},
volume = {132},
publisher = {American Chemical Society (ACS)},
month = {jul},
url = {https://doi.org/10.1021/ja104351q},
number = {29},
pages = {10195--10201},
doi = {10.1021/ja104351q}
}
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Fritzinger, Bernd, et al. “Utilizing Self-Exchange To Address the Binding of Carboxylic Acid Ligands to CdSe Quantum Dots.” Journal of the American Chemical Society, vol. 132, no. 29, Jul. 2010, pp. 10195-10201. https://doi.org/10.1021/ja104351q.