NOVÁK, Jiří, Rupak BANERJEE, Andreas KORNOWSKI, Maciej JANKOWSKI, Alexander ANDRE, Horst WELLER, Frank SCHREIBER and Marcus SCHEELE. Site-Specific Ligand Interactions Favor the Tetragonal Distortion of PbS Nanocrystal Superlattices. ACS APPLIED MATERIALS & INTERFACES. WASHINGTON: AMER CHEMICAL SOC, 2016, vol. 8, No 34, p. 22526-22533. ISSN 1944-8244. Available from: https://dx.doi.org/10.1021/acsami.6b06989. |
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@article{1355505, author = {Novák, Jiří and Banerjee, Rupak and Kornowski, Andreas and Jankowski, Maciej and Andre, Alexander and Weller, Horst and Schreiber, Frank and Scheele, Marcus}, article_location = {WASHINGTON}, article_number = {34}, doi = {http://dx.doi.org/10.1021/acsami.6b06989}, keywords = {nanocrystals; self-assembly; X-ray scattering; electron microscopy; mesocrystals}, language = {eng}, issn = {1944-8244}, journal = {ACS APPLIED MATERIALS & INTERFACES}, title = {Site-Specific Ligand Interactions Favor the Tetragonal Distortion of PbS Nanocrystal Superlattices}, url = {http://pubs.acs.org/doi/abs/10.1021/acsami.6b06989}, volume = {8}, year = {2016} }
TY - JOUR ID - 1355505 AU - Novák, Jiří - Banerjee, Rupak - Kornowski, Andreas - Jankowski, Maciej - Andre, Alexander - Weller, Horst - Schreiber, Frank - Scheele, Marcus PY - 2016 TI - Site-Specific Ligand Interactions Favor the Tetragonal Distortion of PbS Nanocrystal Superlattices JF - ACS APPLIED MATERIALS & INTERFACES VL - 8 IS - 34 SP - 22526-22533 EP - 22526-22533 PB - AMER CHEMICAL SOC SN - 19448244 KW - nanocrystals KW - self-assembly KW - X-ray scattering KW - electron microscopy KW - mesocrystals UR - http://pubs.acs.org/doi/abs/10.1021/acsami.6b06989 L2 - http://pubs.acs.org/doi/abs/10.1021/acsami.6b06989 N2 - We analyze the structure and morphology of mesocrystalline, body-centered tetragonal (bct) superlattices of PbS nanocrystals functionalized with oleic acid. On the basis of combined scattering and real space imaging, we derive a three-dimensional (3D) model of the superlattice and show that the bct structure benefits from a balanced combination of {100}(PbS)-{100}(PbS) and {111}(PbS)-{111}(PbS) interactions between neighboring layers of nanocrystals, which uniquely stabilizes this structure. These interactions are enabled by the coaxial alignment of the atomic lattices of PbS with the superlattice. In addition, we find that this preferential orientation is already weakly present within isolated monolayers. By adding excess oleic acid to the nanocrystal solution, tetragonal distortion is suppressed, and we observe assembly into a bilayered hexagonal lattice reminiscent of a honeycomb with grain sizes of several micrometers. ER -
NOVÁK, Jiří, Rupak BANERJEE, Andreas KORNOWSKI, Maciej JANKOWSKI, Alexander ANDRE, Horst WELLER, Frank SCHREIBER and Marcus SCHEELE. Site-Specific Ligand Interactions Favor the Tetragonal Distortion of PbS Nanocrystal Superlattices. \textit{ACS APPLIED MATERIALS \&{}amp; INTERFACES}. WASHINGTON: AMER CHEMICAL SOC, 2016, vol.~8, No~34, p.~22526-22533. ISSN~1944-8244. Available from: https://dx.doi.org/10.1021/acsami.6b06989.
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