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Summary of phase transition behavior. (a) Phase transition temperature and range diagram for DPB[7] monomers (DPB[7]-C3, M5, and M6) and DPB[7] polymers (P1–P4) observed by DSC measurement in second heating (for M5 and M6) and third heating (for DPB[7]-C3 and P1–P4) process. POM images of (b) schlieren texture for P2 at 193 °C and (c) fan-shape texture for P4 at 128 °C.
