Thermotropic liquid crystals sharpness

In sharp contrast to the situation for lyotropic systems, dynamic behavior of thermotropic liquid crystals has received considerable research attention. It is useful, therefore, to begin by assessing the implications of this work for lyotropic systems. 

Finally, it is worth mentioning that polymers such as PTS-12 (].) and 3-BCMCJ (2) can be melted without decomposition the melts show liquid crystalline behaviour which disappears upon further increase in temperature, A sharp transition to the isotropic state has not been obseirved. It is recommended to do further research on this subject which could be relevant to the general area of polymeric thermotropic liquid crystals as well as to the further discussion of the temperature dependence of chain stiffness in PDA molecules. 

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