Abstract
Abstract Homo- and co-polymerizations of a chiral N -propargylamide (M 1 containing 2,2-dimethyl-5-oxo-1,3-dioxolane group) and an achiral N -propargylamide (M 2 containing adamantane group) were carried out in the presence of (nbd)Rh + B − (C 6 H 5 ) 4 . All the (co)polymers synthesized were obtained in a yield ⩾80%. Poly( 1 ) assumed helices of a predominant handedness and exhibited an optical activity, while poly( 2 ) formed helices of an equal amount of right- and left-handed screws and showed no optical activity. The maximum wavelength and CD signal intensity of the copolymers with varied M 1 /M 2 ratios demonstrated considerable composition dependence. This observation was explained by the synergic effects between the pendent groups during the formation of helical structures.
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