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Low Molecular Weight Gelators with Hexagonal Order in Their Liquid‐Crystal Phases and Gel States: 5‐Cyano‐2‐(3,4,5‐trialkoxybenzoylamino)tropones
Author(s) -
Hashimoto M.,
Ujiie S.,
Mori A.
Publication year - 2003
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.200303996
Subject(s) - tropone , materials science , liquid crystal , crystallography , hexagonal crystal system , flattening , molecule , hydrogen bond , scanning electron microscope , silica gel , chemical engineering , organic chemistry , chemistry , composite material , optoelectronics , engineering
5‐Cyano‐2‐(3,4,5‐trialkoxybenzoylamino)tropones form hexagonal structures in both liquid‐crystalline and gel states. The Figure shows an environmental scanning electron microscopy image of octanol gels. Hydrogen bonding between the tropone carbonyl group and the NH group of troponoid amides plays an important role in flattening the molecules, allowing tighter packing structures and more stable columnar mesophases and gel states.