Journal of the American Chemical Society, volume 129, issue 30, pages 9500-9509

Surface Ligand Dynamics in Growth of Nanocrystals

Narayan C. Pradhan 1
Danielle Reifsnyder 1
Renguo Xie 1
José Aldana 1
1
 
Contribution from the Department of Chemistry and Biochemistry, University of Arkansas, Fayetteville, Arkansas 72701
Publication typeJournal Article
Publication date2007-07-10
Quartile SCImago
Q1
Quartile WOS
Q1
Impact factor15
ISSN00027863, 15205126
General Chemistry
Catalysis
Biochemistry
Colloid and Surface Chemistry
Abstract
Amine ligands were identified to bond on the surface of CdSe nanocrystals in a dynamic fashion under elevated temperatures in the reproducible growth domain of the specific designed growth reactions. The surface ligand dynamics was found to strongly depend on the growth temperature, the ligand concentration, and the ligand chain length. The strong chain-length dependence was originated from the interligand interactions in the ligand monolayer of a nanocrystal, provided fatty amines being weak ligands for CdSe nanocrystals. When the growth reaction was above the boiling point of an amine ligand, the surface ligand dynamics was violent, a quasi-gas-phase state, indicated by strong temperature-dependent and fast growth rates of the nanocrystals. Approximately below its boiling point, a significantly weak temperature dependence of the growth rate of the nanocrystals associated with the quasi-liquid state of the surface ligands was observed. A direct result of studying the surface ligand dynamics of this well-established nanocrystal system was the formation of high-quality CdSe nanocrystals under much reduced temperature, 150 degrees C, in comparison to the standard 250-350 degrees C temperature range. This was achieved by using fatty amines with a short hydrocarbon chain at a low ligand concentration in the solution. Preliminary results indicate that a similar temperature (160 degrees C) also worked for the growth of InP nanocrystals.

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GOST |
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GOST Copy
Pradhan N. C. et al. Surface Ligand Dynamics in Growth of Nanocrystals // Journal of the American Chemical Society. 2007. Vol. 129. No. 30. pp. 9500-9509.
GOST all authors (up to 50) Copy
Pradhan N. C., Reifsnyder D., Xie R., Aldana J., Peng X. Surface Ligand Dynamics in Growth of Nanocrystals // Journal of the American Chemical Society. 2007. Vol. 129. No. 30. pp. 9500-9509.
RIS |
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RIS Copy
TY - JOUR
DO - 10.1021/ja0725089
UR - https://doi.org/10.1021/ja0725089
TI - Surface Ligand Dynamics in Growth of Nanocrystals
T2 - Journal of the American Chemical Society
AU - Reifsnyder, Danielle
AU - Aldana, José
AU - Pradhan, Narayan C.
AU - Xie, Renguo
AU - Peng, Xiaogang
PY - 2007
DA - 2007/07/10 00:00:00
PB - American Chemical Society (ACS)
SP - 9500-9509
IS - 30
VL - 129
SN - 0002-7863
SN - 1520-5126
ER -
BibTex |
Cite this
BibTex Copy
@article{2007_Pradhan,
author = {Danielle Reifsnyder and José Aldana and Narayan C. Pradhan and Renguo Xie and Xiaogang Peng},
title = {Surface Ligand Dynamics in Growth of Nanocrystals},
journal = {Journal of the American Chemical Society},
year = {2007},
volume = {129},
publisher = {American Chemical Society (ACS)},
month = {jul},
url = {https://doi.org/10.1021/ja0725089},
number = {30},
pages = {9500--9509},
doi = {10.1021/ja0725089}
}
MLA
Cite this
MLA Copy
Pradhan, Narayan C., et al. “Surface Ligand Dynamics in Growth of Nanocrystals.” Journal of the American Chemical Society, vol. 129, no. 30, Jul. 2007, pp. 9500-9509. https://doi.org/10.1021/ja0725089.
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