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For a designed LC homopolymer, bearing a polyimide backbone mesogen and two terminally-connected cyanobiphenyl mesogens via aliphatic spacers in a repeat unit, the formation of layer-type supramolecular nanostructures, and involved organization route within sheared film have been studied in this research. The anisotropic layer scheme induced within sheared film identified the feasible phase separation...
The first two nonracemic chiral main-chain perylene tetracarboxylic diimide (PDI) polymers have been synthesized via acyclic diene metathesis polymerization. The use of optically pure l-α amino acids as the starting materials enables us to tune PDI π-stacking interaction in optically active polymers. The integration of π-stack tuning groups renders two main-chain PDI polymers soluble in chloroform...
A series of newly designed polyimides, composed of aromatic polyimide backbones and methylene side chains with terminal 4-cyanobiphenyl groups, were synthesized based on the polycondensation of 3,3′,4,4′-biphenyl tetracarboxylic dianhydride (BPDA) with 2,2′-bis{ω-[4-(4-cyanophenyl)phenyoxy-n-alkoxycarbonyl]}-4,4′-biphenyl diamine (nCBBP, where n is the number of methylene units in the side chains)...
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