Zhang, Zhen-Yu; Wang, Qian; Hou, Ping-Ping; Shen, Zhihao; Fan, Xing-He published an article in 2015, the title of the article was Effects of rigid cores and flexible tails on the phase behaviors of polynorbornene-based mesogen-jacketed liquid crystalline polymers.Formula: C22H19NO4 And the article contains the following content:
A new series of mesogen-jacketed liquid crystalline polymers (MJLCPs) with a polynorbornene main chain and different side groups were prepared by ring-opening metathesis polymerization The liquid crystalline (LC) phase behaviors of these polymers were investigated by differential scanning calorimetry, polarized light microscopy, and wide-angle X-ray diffraction. Depending on the rigid side-chain core and peripheral alkyl chains, these polymers show different LC structures. The polymer with the terphenyl rigid side-chain core and relatively short alkyl tails is amorphous in the whole temperature range, while those with the same rigid side-chain core but longer alkyl tails exhibit columnar nematic (Coln) phases. Polymers with a longer rigid side-chain core and relatively long alkyl tails develop into smectic A (SmA) phases. In addition, the LC polymers obtained in this study display LC phases in wide temperature ranges. The experimental process involved the reaction of Dimethyl 2′-amino-[1,1′:4′,1”-terphenyl]-4,4”-dicarboxylate(cas: 1312703-30-2).Formula: C22H19NO4
The Article related to polynorbornene mesogen jacketed liquid crystalline polymer phase behavior, ring opening metathesis polymerization thermal property, Chemistry of Synthetic High Polymers: Ring-Opening and Other Polymerizations and other aspects.Formula: C22H19NO4
Referemce:
Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics