Journal of Physical Chemistry C, volume 111, issue 30, pages 11208-11215
Differences in Cross-Link Chemistry between Rigid and Flexible Dithiol Molecules Revealed by Optical Studies of CdTe Quantum Dots
Publication type: Journal Article
Publication date: 2007-07-07
Journal:
Journal of Physical Chemistry C
Quartile SCImago
Q1
Quartile WOS
Q2
Impact factor: 3.7
ISSN: 19327447, 19327455
Surfaces, Coatings and Films
Electronic, Optical and Magnetic Materials
Physical and Theoretical Chemistry
General Energy
Abstract
The cross-link chemistry of CdTe quantum dots (QDs) in solution is studied for different types of aliphatic (flexible) and aromatic (rigid) dithiol linker molecules. A remarkable difference in the cross-linking efficiency is observed: the rigid dithiols are shown to form aggregates at much lower concentrations. Qualitative and quantitative information on the formation of aggregates is obtained from cryogenic transmission electron microscopy (cryo-TEM) images and photoluminescence decay measurements. The luminescence decay curves are analyzed with a model for energy transfer to neighboring QDs in aggregates. The analysis shows that the cross-linking efficiency is 4 times higher for the rigid dithiols than for the flexible dithiols. The difference is attributed to the formation of loops for the flexible dithiols by attaching with both thiol groups to the same nanocrystal surface (preventing cross-linking), whereas the rigid aromatic dithiols cannot form loops and the second thiol group is oriented away from the surface (enabling cross-linking). The difference in conformation between flexible and rigid dithiols is confirmed by studies on the red-shift in the optical absorption spectra due to capping exchange of amines by monothiols or dithiols and by molecular simulations.
Top-30
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1 publication, 1.32%
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Citations by publishers
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American Chemical Society (ACS)
43 publications, 56.58%
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Wiley
8 publications, 10.53%
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Elsevier
6 publications, 7.89%
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6 publications, 7.89%
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3 publications, 3.95%
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Springer Nature
2 publications, 2.63%
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1 publication, 1.32%
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Multidisciplinary Digital Publishing Institute (MDPI)
1 publication, 1.32%
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IOP Publishing
1 publication, 1.32%
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Hindawi Limited
1 publication, 1.32%
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Thieme
1 publication, 1.32%
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Autonomous Non-profit Organization Editorial Board of the journal Uspekhi Khimii
1 publication, 1.32%
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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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Koole R. et al. Differences in Cross-Link Chemistry between Rigid and Flexible Dithiol Molecules Revealed by Optical Studies of CdTe Quantum Dots // Journal of Physical Chemistry C. 2007. Vol. 111. No. 30. pp. 11208-11215.
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Koole R., Luigjes B., Tachiya M., Pool R., Vlugt T. J. H., De Mello Donega C., Meijerink A., Vanmaekelbergh D. Differences in Cross-Link Chemistry between Rigid and Flexible Dithiol Molecules Revealed by Optical Studies of CdTe Quantum Dots // Journal of Physical Chemistry C. 2007. Vol. 111. No. 30. pp. 11208-11215.
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TY - JOUR
DO - 10.1021/jp072407x
UR - https://doi.org/10.1021/jp072407x
TI - Differences in Cross-Link Chemistry between Rigid and Flexible Dithiol Molecules Revealed by Optical Studies of CdTe Quantum Dots
T2 - Journal of Physical Chemistry C
AU - Koole, R
AU - Luigjes, B
AU - Tachiya, M.
AU - Pool, René
AU - Vlugt, Thijs J. H.
AU - De Mello Donega, C.
AU - Meijerink, A.
AU - Vanmaekelbergh, Daniel
PY - 2007
DA - 2007/07/07 00:00:00
PB - American Chemical Society (ACS)
SP - 11208-11215
IS - 30
VL - 111
SN - 1932-7447
SN - 1932-7455
ER -
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@article{2007_Koole,
author = {R Koole and B Luigjes and M. Tachiya and René Pool and Thijs J. H. Vlugt and C. De Mello Donega and A. Meijerink and Daniel Vanmaekelbergh},
title = {Differences in Cross-Link Chemistry between Rigid and Flexible Dithiol Molecules Revealed by Optical Studies of CdTe Quantum Dots},
journal = {Journal of Physical Chemistry C},
year = {2007},
volume = {111},
publisher = {American Chemical Society (ACS)},
month = {jul},
url = {https://doi.org/10.1021/jp072407x},
number = {30},
pages = {11208--11215},
doi = {10.1021/jp072407x}
}
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Koole, R., et al. “Differences in Cross-Link Chemistry between Rigid and Flexible Dithiol Molecules Revealed by Optical Studies of CdTe Quantum Dots.” Journal of Physical Chemistry C, vol. 111, no. 30, Jul. 2007, pp. 11208-11215. https://doi.org/10.1021/jp072407x.