Mesoscale Polarization by Geometric Frustration in Columnar Supramolecular Crystals.
Mesoscale Polarization by Geometric Frustration in Columnar Supramolecular Crystals.
复制标题
柱超分子晶体中的几何挫折中的中尺度极化。
DOI:
10.1002/anie.201612122
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发表时间:
2017-04-10
期刊:
影响因子:
--
通讯作者:
Senker J
中科院分区:
文献类型:
--
作者:
Zehe CS;Hill JA;Funnell NP;Kreger K;van der Zwan KP;Goodwin AL;Schmidt HW;Senker J
Columnar supramolecular phases with polarization along the columnar axis have potential for the development of ultrahigh‐density memories as every single column might function as a memory element. By investigating structure and disorder for four columnar benzene‐1,3,5‐trisamides by total X‐ray scattering and DFT calculations, we demonstrate that the column orientation, and thus the columnar dipole moment, is receptive to geometric frustration if the columns aggregate in a hexagonal rod packing. The frustration suppresses conventional antiferroelectric order and heightens the sensitivity towards collective intercolumnar packing effects. The latter finding allows for the building up of mesoscale domains with spontaneous polarization. Our results suggest how the complex interplay between steric and electrostatic interactions is influenced by a straightforward chemical design of the molecular synthons to create spontaneous polarization and to adjust mesoscale domain size.
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影响因子:
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