Six new chiral (meth)acryalte liquid crystalline monomers (M
1
~M
6
) derived from menthol were synthesized. The corresponding polymers (M
1
~M
6
) were obtained by means of free radical polymerization of these monomers with azobisisobutyronitrile (AIBN) as an initiator and toluene as a solvent. The chemical structures of the obtained intermediate
monomers and polymers were characterized by FT-IR
or 1H NMR. The average molecular weight was determined by gel permeation chromatography (GPC). The specific optical rotations were evaluated with a polarimeter. The experimental results showed that the specific optical rotations of M
1
~M
6
and M
1
~M
6
were all left-handed
which indicates that the configuration or rotation direction of these chiral new compounds is hardly affected by a series of chemical reaction. In addition
the specific optical rotation values decreased with increasing the number of phenyl ring or the length of flexible spacer. However
the specific optical rotation absolute values of M
1
~M
6
were less than those of the corresponding monomers.
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Related Author
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Related Institution
College of Chemical Engineering and Materials Science, Tianjin University of Science & Technology
Key Laboratory of Synthesis and Self-Assembly Chemistry for Organic Functional Molecules, Shanghai Instituet of Organic Chemistry, Chinese Academy of Sciences
Public Health College, Inner Mongolia Medical College
College of Science, Northeastern University
Department of Polymer Materials, School of Chemical Engineering, Dalian University of Technology, Zhongshan Road