Synthesis Of Liquid Crystal Pendent Containing Polymers

In this paper, a large space hydrophobic liquid crystal contained monomer was designed and synthesized, which was used to synthesis liquid crystal pendent containing polymers through ATRP and Mercapto Chain-Transfer Polymerization (MCTP) and the properties of these polymers were detected.First of all, the carbazole pendent containing styrene monomer (CCS), ATRP macroinitiator MPEG-Br, and the efficient ATRP ligand Me6[14]aneN4 were designed and synthesized, which were used to synthesis of novel amphiphilic block polymer MPEG-b-PCCS by ATRP. The monomer and polymers were characterized by FTIR, 1H-NMR, MS and GPC.Secondly, the sodium S-alkylthiosulfuric-containing styrene monomer (SATCS) was designed and synthesized through the Bunte salt reaction, we use SATCS as monomer , AIBN as initiator to prepare Branched PSATCS in DMSO solvent and we also use SATCS as branched monomer together with styrene (St) and AIBN to prepare branched polystyrene (BPS) in DMSO solvent. These polymers were characterized by FTIR, 1H-NMR and multiple detectors GPC/LS/DV in THF at 30 oC. And we call this new method Mercapto Chain-Transfer Polymerization (MCTP).Finally, we use carbazole-unite-containing styrene monomer (CCS) as monomer to prepare a carbazole-unit-containing branched polymer by MCTP which was characterized by XRD.