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Crystallization of isotactic poly(N,N-diethyl acrylamide) synthesized by ytterbium triflate/H2O-catalyzed stereoselective radical polymerization

Polymer Journal volume 53, pages 533–538 (2021)Cite this article

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Abstract

Crystallization of isotactic poly(N,N-diethyl acrylamide) (i-PDEAA) prepared by ytterbium triflate/H2O-catalyzed radical polymerization in the presence of an organotellurium chain transfer agent was studied. i-PDEAA single crystals were successfully grown from solution using a mixture of methanol and diethyl ether as the solvent. Selected-area electron diffraction patterns obtained by transmission electron microscopy provided clear information about the unit cell and suggested polymorphisms of the i-PDEAA crystals. The lattice constants of the Form-1 crystal were determined to be a = 0.530 nm, b = 0.342 nm, c = 1.009 nm, and α = β = γ = 90°. On the other hand, the lattice constants of the Form-2 crystal were only roughly estimated to be a = 0.73 nm, b = 0.49 nm, and γ = 90°.

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Acknowledgements

This work was supported by the Japan Society for the Promotion of Science KAKENHI (16H06352) to SY.

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  1. Institute for Chemical Research, Kyoto University, Gokasho, Uji, Kyoto-fu, 611-0011, Japan

    Beomsu Park, Masatoshi Tosaka & Shigeru Yamago

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  1. Beomsu Park
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  2. Masatoshi Tosaka
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Correspondence to Masatoshi Tosaka or Shigeru Yamago.

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Park, B., Tosaka, M. & Yamago, S. Crystallization of isotactic poly(N,N-diethyl acrylamide) synthesized by ytterbium triflate/H2O-catalyzed stereoselective radical polymerization. Polym J 53, 533–538 (2021). https://doi.org/10.1038/s41428-020-00445-z

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