Molecular engineering of liquid-crystalline polymers by living polymerization. Part 24.—Synthesis of poly(vinyl ether)s exhibiting an SC*phase by living cationic polymerization of (2S,3S)-(+)-2-chloro-3-methylpentyl 4′-(6-vinyloxyhexyloxy)biphenyl-4-carboxylate and its copolymerization with (2S,3S)-(+)-2-chloro-3-methylpentyl 4′-(8-vinyloxyoctyloxy)biphenyl-4-ylcarboxylate