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The different thermochromic characteristics are attributed to subtle morphological differences between the polymers.
These results indicate a fundamental physicochemical difference between the intermolecular interactions that prevail in thermotropic and lyotropic liquid crystals.
To the best of our knowledge, this is the first case in thermotropic liquid crystals where one compound exhibits both calamitic and discotic mesomorphism with the change of molecular shape in anisotropy.
Thus, this paper provides a family of new thermochromic materials for potential thermometric applications.
Compared with the traditional thermochromic materials, liquid crystals (LC)/polymer composites are more advantageous in large-area manufacturing and facile processing.
Our findings go in the direction to extend experimental results related to dynamics of defects in liquid crystals since only thermotropic and polymerics ones had been investigated.
The origin of the observed thermochromic effect is a conformational change of the polymer backbone which reversibly triggers the formation of polymer–dye complexes.

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