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Polar Superstructures Stabilized by Polymeric Oxometal Units: Columnar Liquid Crystals Based on Tapered Dioxomolybdenum Complexes
Author(s) -
Serrette André G.,
Swager Timothy M.
Publication year - 1994
Publication title -
angewandte chemie international edition in english
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 5.831
H-Index - 550
eISSN - 1521-3773
pISSN - 0570-0833
DOI - 10.1002/anie.199423421
Subject(s) - mesophase , antiferroelectricity , polar , materials science , liquid crystal , crystallography , hexagonal crystal system , symmetry (geometry) , chemical engineering , chemistry , ferroelectricity , geometry , optoelectronics , mathematics , physics , astronomy , dielectric , engineering
Antiferroelectric behavior is not exhibited by the liquid crystalline phases of 1 , n = 10, 12, 14, 16. This indicates new prospects for novel polar materials. Antiferroelectric behavior in 1 is prevented by the polymeric structure (·· MoO … MoO··) of the mesophase and its hexagonal symmetry. The range of mesophase stability is 25–45 K, from about 95 to 141 °C.