Facile Synthesis and Enhanced Aggregation-Induced Circular Dichroism of Novel Chiral Polyamides.

ABSTRACT: A series of optically active polyamides, PAnLATs (n = 9-12), were prepared by polycondensation of l-tartrate-derived diacid with achiral aliphatic diamines in which the number of the methylene is from 9 to 12. The monomers could be obtained easily, and the synthesis of the polyamides is facile. The number-average molecular weight (M̅ _n) of PA9LAT, PA10LAT, PA11LAT, and PA12LAT is 35 500, 24 400, 35 800, and 20 900 g/mol, respectively, and the related polydispersity index is 3.4, 3.3, 3.4, and 3.0. These polyamides display intense optical activity in solution. Particularly, the stronger ellipticities and different circular dichroism (CD) images were presented when the polymers were evaluated in the solid state. The crystalline properties of the polymers were

SUBMITTER: Zhang L 

PROVIDER: S-EPMC6641766 | biostudies-literature | 2017 Aug

REPOSITORIES: biostudies-literature