Simple Cubic Super Crystals Containing PbTe Nanocubes and Their Core−Shell Building Blocks

We report a preparation of high-quality cubic PbTe nanocrystals and their assembly into both square-array, two-dimensional patterns and three-dimensional simple cubic super crystals. The influence of oleylamine in the nanocrystal synthesis and core−shell formation through an anion-exchange mechanism...

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Bibliographic Details
Published in:Journal of the American Chemical Society 2008-11, Vol.130 (45), p.15203-15209
Main Authors: Zhang, Jun, Kumbhar, Amar, He, Jibao, Das, Narayan Chandra, Yang, Kaikun, Wang, Jian-Qing, Wang, Howard, Stokes, Kevin L, Fang, Jiye
Format: Article
Language:English
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Summary:We report a preparation of high-quality cubic PbTe nanocrystals and their assembly into both square-array, two-dimensional patterns and three-dimensional simple cubic super crystals. The influence of oleylamine in the nanocrystal synthesis and core−shell formation through an anion-exchange mechanism was also studied. The simple cubic super crystals together with two-dimensional assembly patterns containing PbTe nanocubes and their core−shell building blocks were examined using TEM, SEM, AFM, XRD, SAXS, and FTIR. Such super crystals consisting of cubic structural building blocks may allow engineering of more complex materials from which novel properties may emerge.
ISSN:0002-7863
1520-5126
DOI:10.1021/ja806120w