Journal of the American Chemical Society, volume 123, issue 7, pages 1389-1395

Mechanisms of the Shape Evolution of CdSe Nanocrystals

Z.Adam Peng 1
1
 
Contribution from the Department of Chemistry and Biochemistry, University of Arkansas, Fayetteville, Arkansas 72701
Publication typeJournal Article
Publication date2001-01-30
Quartile SCImago
Q1
Quartile WOS
Q1
Impact factor15
ISSN00027863, 15205126
General Chemistry
Catalysis
Biochemistry
Colloid and Surface Chemistry
Abstract
The temporal shape evolution of CdSe quantum confined nanorods (quantum rods) in nonaqueous solvents with organometallic precursors was studied quantitatively and systematically. The experimental results revealed three distinguishable stages in the shape evolution. At high monomer concentrations, nanocrystals grow exclusively along the c-axis of the wurtzite structure, making this axis the long axis of the rods. At intermediate concentrations, nanocrystals grow simultaneously in three dimensions. At low monomer concentrations, the aspect ratio decreases in a process controlled by intraparticle diffusion on the surface of the nanocrystals. This intraparticle ripening stage is different from normal Ostwald ripening, which occurs at lower monomer concentrations and is by monomer migration from small to larger ones. Addition of hexylphosphonic acid or tetradecylphosphonic acid, strong cadmium ligands, is important mainly because it enables the high monomer concentrations needed for the growth of quantum rods....

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GOST |
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GOST Copy
Peng Z., Peng X. Mechanisms of the Shape Evolution of CdSe Nanocrystals // Journal of the American Chemical Society. 2001. Vol. 123. No. 7. pp. 1389-1395.
GOST all authors (up to 50) Copy
Peng Z., Peng X. Mechanisms of the Shape Evolution of CdSe Nanocrystals // Journal of the American Chemical Society. 2001. Vol. 123. No. 7. pp. 1389-1395.
RIS |
Cite this
RIS Copy
TY - JOUR
DO - 10.1021/ja0027766
UR - https://doi.org/10.1021/ja0027766
TI - Mechanisms of the Shape Evolution of CdSe Nanocrystals
T2 - Journal of the American Chemical Society
AU - Peng, Z.Adam
AU - Peng, Xiaogang
PY - 2001
DA - 2001/01/30 00:00:00
PB - American Chemical Society (ACS)
SP - 1389-1395
IS - 7
VL - 123
SN - 0002-7863
SN - 1520-5126
ER -
BibTex |
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BibTex Copy
@article{2001_Peng,
author = {Z.Adam Peng and Xiaogang Peng},
title = {Mechanisms of the Shape Evolution of CdSe Nanocrystals},
journal = {Journal of the American Chemical Society},
year = {2001},
volume = {123},
publisher = {American Chemical Society (ACS)},
month = {jan},
url = {https://doi.org/10.1021/ja0027766},
number = {7},
pages = {1389--1395},
doi = {10.1021/ja0027766}
}
MLA
Cite this
MLA Copy
Peng, Z.Adam, and Xiaogang Peng. “Mechanisms of the Shape Evolution of CdSe Nanocrystals.” Journal of the American Chemical Society, vol. 123, no. 7, Jan. 2001, pp. 1389-1395. https://doi.org/10.1021/ja0027766.
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