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Thermo‐reversible gelation of liquid crystals using di‐benzylidene‐D‐sorbitol
Author(s) -
Janssen Rob H.C.,
Stümpflen Volker,
van Boxtel Marysia C.W.,
Bastiaansen Cees W.M.,
Broer Dirk J.,
Tervoort Theo A.,
Smith Paul
Publication year - 2000
Publication title -
macromolecular symposia
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.257
H-Index - 76
eISSN - 1521-3900
pISSN - 1022-1360
DOI - 10.1002/1521-3900(200004)154:1<117::aid-masy117>3.0.co;2-7
Subject(s) - liquid crystal , phase diagram , sorbitol , materials science , scattering , light scattering , melting point , phase (matter) , chemical engineering , crystallography , polymer chemistry , optics , chemistry , composite material , organic chemistry , optoelectronics , physics , engineering
Mechanically stable thermo‐reversible gels of the liquid‐crystal LC‐E7 with 1,3:2,4‐Di‐O‐benzylidene‐D‐sorbitol (DBS) form white light‐scattering films that are reversibly switchable to a clear state by AC electric fields. It is established that the light‐scattering nature of DBS/LC‐E7 gels is an intrinsic material property that originates from the occurence of a monotectic‐type point (“mesotectic”) at very low DBS‐concentration in the phase diagram of the DBS/LC‐E7 system.