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Liquid crystal properties of poly(2‐vinylpyridine) fully quaternized with a mesogenic group
Author(s) -
BravoGrimaldo Elda,
NavarroRodriguez Dámaso,
Guillon Daniel
Publication year - 1997
Publication title -
macromolecular chemistry and physics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.57
H-Index - 112
eISSN - 1521-3935
pISSN - 1022-1352
DOI - 10.1002/macp.1997.021981208
Subject(s) - mesogen , thermotropic crystal , mesophase , alkyl , polymer chemistry , liquid crystal , pyridinium , polymer , polymerization , chemistry , materials science , crystallography , organic chemistry , liquid crystalline , optoelectronics
Two poly(2‐vinylpyridine)s fully quaternized with a ω‐(4′‐methoxy‐4‐biphenylyloxy)‐alkyl group (alkyl chain of 9 and 11 carbon atoms) have been synthesized by the well known spontaneous polymerization of vinylpyridinium salts. When heated, these polymers (P2VPC9 and P2VPC11) show thermotropic liquid crystal properties. According to the X‐ray diffraction data, the observed smectic mesophase in both polymers is of the type A (S A ). Results are discussed in comparison with other molecular and polymeric pyridinium salts previously described. A molecular arrangement model for the P2VP derivatives is proposed.