Abstract
We report a strategy for the synthesis of side-on liquid crystalline diblock copolymers by a combination of atom transfer radical polymerization (ATRP) method and a macromolecular azo coupling reaction. The liquid crystalline block, with a terminus suitable for azo coupling reaction, was obtained by ATRP using a synthesized ATRP initiator with the designed functional group and a side-on liquid crystalline monomer. The other block, with a diazonium salt terminus, was obtained by the diazotization of aniline-functionalized PEG. The macromolecular azo coupling reactions between above two polymer blocks were carried out in DMF. The products and intermediates were characterized by GPC, 1H NMR, FT-IR, POM and DSC.
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