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“Open” analogues of azacycloalkane mesogens: Liquid‐crystalline diethylenetriamides
Author(s) -
Stebani Uwe,
Lattermann Günter,
Wittenberg Michael,
Festag Reinhard,
Wendorff Joachim Heinz
Publication year - 1994
Publication title -
advanced materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 10.707
H-Index - 527
eISSN - 1521-4095
pISSN - 0935-9648
DOI - 10.1002/adma.19940060709
Subject(s) - materials science , diethylenetriamine , alkoxy group , liquid crystal , amide , liquid crystalline , crystallography , derivative (finance) , texture (cosmology) , polarized light microscopy , ring (chemistry) , organic chemistry , optics , image (mathematics) , composite material , chemistry , alkyl , optoelectronics , physics , artificial intelligence , computer science , financial economics , economics
Liquid crystals containing “open” analogues of the mesomorphic amide 1,4,7‐triazacyclononane, i.e., 3,4‐bis(alkoxy)‐ benzoyl substituted diethylenetriamine, are reported, showing that the closed‐ring structure of the central core is not essential for mesomorphism in these compounds. The Figure shows the pronounced pseudo‐focalconic texture observed under the polarizing microscope for the decy1 derivative.