Journal of the American Chemical Society, volume 131, issue 46, pages 16851-16857
Synthesis of PbS Nanorods and Other Ionic Nanocrystals of Complex Morphology by Sequential Cation Exchange Reactions
Publication type: Journal Article
Publication date: 2009-10-28
Q1
Q1
SJR: 5.489
CiteScore: 24.4
Impact factor: 14.4
ISSN: 00027863, 15205126
General Chemistry
Catalysis
Biochemistry
Colloid and Surface Chemistry
Abstract
We show that nanocrystals (NCs) with well-established synthetic protocols for high shape and size monodispersity can be used as templates to independently control the NC composition through successive cation exchange reactions. Chemical transformations like cation exchange reactions overcome a limitation in traditional colloidal synthesis, where the NC shape often reflects the inherent symmetry of the underlying lattice. Specifically we show that full or partial interconversion between wurtzite CdS, chalcocite Cu(2)S, and rock salt PbS NCs can occur while preserving anisotropic shapes unique to the as-synthesized materials. The exchange reactions are driven by disparate solubilites between the two cations by using ligands that preferentially coordinate to either monovalent or divalent transition metals. Starting with CdS, highly anisotropic PbS nanorods are created, which serve as an important material for studying strong two-dimensional quantum confinement, as well as for optoelectronic applications. In NC heterostructures containing segments of different materials, the exchange reaction can be made highly selective for just one of the components of the heterostructure. Thus, through precise control over ion insertion and removal, we can obtain interesting CdS|PbS heterostructure nanorods, where the spatial arrangement of materials is controlled through an intermediate exchange reaction.
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Luther J. M. et al. Synthesis of PbS Nanorods and Other Ionic Nanocrystals of Complex Morphology by Sequential Cation Exchange Reactions // Journal of the American Chemical Society. 2009. Vol. 131. No. 46. pp. 16851-16857.
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Luther J. M., Zheng H., Sadtler B., Alivisatos A. P. Synthesis of PbS Nanorods and Other Ionic Nanocrystals of Complex Morphology by Sequential Cation Exchange Reactions // Journal of the American Chemical Society. 2009. Vol. 131. No. 46. pp. 16851-16857.
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TY - JOUR
DO - 10.1021/ja906503w
UR - https://doi.org/10.1021/ja906503w
TI - Synthesis of PbS Nanorods and Other Ionic Nanocrystals of Complex Morphology by Sequential Cation Exchange Reactions
T2 - Journal of the American Chemical Society
AU - Luther, Joseph M.
AU - Zheng, Haimei
AU - Sadtler, Bryce
AU - Alivisatos, A. Paul
PY - 2009
DA - 2009/10/28
PB - American Chemical Society (ACS)
SP - 16851-16857
IS - 46
VL - 131
SN - 0002-7863
SN - 1520-5126
ER -
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@article{2009_Luther,
author = {Joseph M. Luther and Haimei Zheng and Bryce Sadtler and A. Paul Alivisatos},
title = {Synthesis of PbS Nanorods and Other Ionic Nanocrystals of Complex Morphology by Sequential Cation Exchange Reactions},
journal = {Journal of the American Chemical Society},
year = {2009},
volume = {131},
publisher = {American Chemical Society (ACS)},
month = {oct},
url = {https://doi.org/10.1021/ja906503w},
number = {46},
pages = {16851--16857},
doi = {10.1021/ja906503w}
}
Cite this
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Luther, Joseph M., et al. “Synthesis of PbS Nanorods and Other Ionic Nanocrystals of Complex Morphology by Sequential Cation Exchange Reactions.” Journal of the American Chemical Society, vol. 131, no. 46, Oct. 2009, pp. 16851-16857. https://doi.org/10.1021/ja906503w.