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Mesoscale Polarization by Geometric Frustration in Columnar Supramolecular Crystals

Title data

Zehe, Christoph S. ; Hill, Joshua A. ; Funnell, Nicholas P. ; Kreger, Klaus ; van der Zwan, Kasper P. ; Goodwin, Andrew L. ; Schmidt, Hans-Werner ; Senker, Jürgen:
Mesoscale Polarization by Geometric Frustration in Columnar Supramolecular Crystals.
In: Angewandte Chemie International Edition. Vol. 56 (10 April 2017) Issue 16 . - pp. 4432-4437.
ISSN 1521-3773
DOI: https://doi.org/10.1002/anie.201612122

Project information

Project title:
Project's official titleProject's id
SFB840No information

Project financing: Deutsche Forschungsgemeinschaft

Abstract in another language

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.

Further data

Item Type: Article in a journal
Refereed: Yes
Keywords: Ising model; organic ferroelectrics; self-assembly; supramolecular chemistry; total X-ray scattering
Institutions of the University: Faculties > Faculty of Biology, Chemistry and Earth Sciences > Department of Chemistry > Chair Anorganic Chemistry III > Chair Anorganic Chemistry III - Univ.-Prof. Dr. Jürgen Senker
Faculties
Faculties > Faculty of Biology, Chemistry and Earth Sciences
Faculties > Faculty of Biology, Chemistry and Earth Sciences > Department of Chemistry
Faculties > Faculty of Biology, Chemistry and Earth Sciences > Department of Chemistry > Chair Anorganic Chemistry III
Result of work at the UBT: Yes
DDC Subjects: 500 Science > 540 Chemistry
Date Deposited: 21 Nov 2017 10:18
Last Modified: 21 Nov 2017 10:18
URI: https://eref.uni-bayreuth.de/id/eprint/40536