Abstract
The polycondensation of N-((3,5-diamino)benzoyl)-ʟ-alanine dodecyl ester (1L) with p-phthalaldehyde (2) was carried out to obtain poly(1L-2), a novel optically active polymer containing Schiff base moieties in the main chain. A series of analogous polymers with Schiff base moieties were also synthesized from N-((3,5-diamino)benzoyl)-ᴅ-alanine dodecyl ester (1D) and N-((3,5-diamino)benzoyl)glycine dodecyl ester (1G) with various feed ratios. The polymers exhibited CD signals assignable to exciton coupling-based chirality in CHCl3 depending on the feed molar ratios of 1L/1D and 1L/1G. Poly(1L-2) exhibited lyotropic liquid crystallinity in CHCl3 and THF.
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