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. 2016 Feb 18;116(18):10852–10887. doi: 10.1021/acs.chemrev.5b00739

Figure 22.

Figure 22

HR-TEM images of (a) spherical PbTe|CdTe, (b) spherical and (c) cubic PbSe|CdSe core|shell NCs observed in the (a,c) [100] and (b) [100] directions. (d) Schematic representation of a typical PbSe|CdSe core|shell QD. (e) Sketch of the structural transformation from pure PbSe cube-shaped NCs to core|shell PbSe|CdSe NHCs with a nearly octahedron PbSe core. The PbSe is indicated in orange, CdSe in yellow. (a,b) Reproduced from [Lambert, K.; Geyter, B. D.; Moreels, I.; Hens, Z. PbTe|CdTe Core|Shell Particles by Cation Exchange, a HR-TEM study Chem. Mater. 2009, 21, 778–780]. Copyright 2009 American Chemical Society. (c,e) Reproduced from [Casavola, M.; van Huis, M. A.; Bals, S.; Lambert, K.; Hens, Z.; Vanmaekelbergh, D. Anisotropic Cation Exchange in PbSe/CdSe Core/Shell Nanocrystals of Different Geometry Chem. Mater. 2012, 24, 294–302]. Copyright 2012 American Chemical Society. (d) Reproduced from [Abel, K. A.; FitzGerald, P. A.; Wang, T.-Y.; Regier, T. Z.; Raudsepp, M.; Ringer, S. P.; Warr, G. G.; van Veggel, F. C. J. M. Probing the Structure of Colloidal Core/Shell Quantum Dots Formed by Cation Exchange J. Phys. Chem. C2012, 116, 3968–3978]. Copyright 2012 American Chemical Society.