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(A) Synthesis of main-chain cationic polymers from lithocholic acid. Polymer labels denoted as Pm,n. where m is the number of methylene groups in the dibromide linker and n is the number of methylene groups in the ditertiary amine linker; (B) The structure of Pcontrol that was synthesized using 1,12-dodecanediol instead of the lithocholic diol.
