The invention discloses a preparation method and application of an alpha-
tropine-based non-arylether
polyfluorene alkylene
polymer and an anion exchange membrane, and belongs to the technical field of
organic synthesis and energy conversion. According to the invention, a non-arylether
polyfluorene alkylene
polymer containing a
side chain terminal
bromine group is obtained by utilizing a
superacid catalyzed Friedel-Crafts
alkylation reaction, and further, the terminal
bromine of the
polymer and steric hindrance cage-shaped alpha-
tropine containing a
tertiary amine group are subjected to a Moshu reaction to obtain the non-arylether
polyfluorene alkylene anion exchange polymer containing cage-shaped
tropine quaternary ammonium salt. The position of the cation group of the anion exchange membrane prepared from the polymer is controllable, and the density of the
ion group can be improved. Meanwhile, the caged large-steric-hindrance tropine
quaternary ammonium salt ensures the
chemical stability, and the contained hydrophilic hydroxyl can promote water transmission and
ion conduction in the membrane. A
hydrophobic polymer skeleton is separated from hydrophilic tropine through a long
alkyl side chain linker, so that the polymer has an obvious microphase separation structure, and generation of OH <-> transport
ion channels is promoted. The non-
aryl ether polymer main chain and the hydroxyl-containing cage sterically hindered cations can ensure that the anion exchange membrane prepared from the polymer has long-term alkali-resistant stability.