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Ring-opening polymerization-induced crystallization-driven self-assembly of poly-L-lactide-block-polyethylene glycol block copolymers (ROPI-CDSA)

Author

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  • Paul J. Hurst

    (University of California, Irvine)

  • Alexander M. Rakowski

    (University of California, Irvine)

  • Joseph P. Patterson

    (University of California, Irvine)

Abstract

The self-assembly of block copolymers into 1D, 2D and 3D nano- and microstructures is of great interest for a wide range of applications. A key challenge in this field is obtaining independent control over molecular structure and hierarchical structure in all dimensions using scalable one-pot chemistry. Here we report on the ring opening polymerization-induced crystallization-driven self-assembly (ROPI-CDSA) of poly-L-lactide-block-polyethylene glycol block copolymers into 1D, 2D and 3D nanostructures. A key feature of ROPI-CDSA is that the polymerization time is much shorter than the self-assembly relaxation time, resulting in a non-equilibrium self-assembly process. The self-assembly mechanism is analyzed by cryo-transmission electron microscopy, wide-angle x-ray scattering, Fourier transform infrared spectroscopy, and turbidity studies. The analysis revealed that the self-assembly mechanism is dependent on both the polymer molecular structure and concentration. Knowledge of the self-assembly mechanism enabled the kinetic trapping of multiple hierarchical structures from a single block copolymer.

Suggested Citation

  • Paul J. Hurst & Alexander M. Rakowski & Joseph P. Patterson, 2020. "Ring-opening polymerization-induced crystallization-driven self-assembly of poly-L-lactide-block-polyethylene glycol block copolymers (ROPI-CDSA)," Nature Communications, Nature, vol. 11(1), pages 1-12, December.
    • Handle: RePEc:nat:natcom:v:11:y:2020:i:1:d:10.1038_s41467-020-18460-2
    DOI: 10.1038/s41467-020-18460-2
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    Cited by:

    1. Falon C. Kalutantirige & Jinlong He & Lehan Yao & Stephen Cotty & Shan Zhou & John W. Smith & Emad Tajkhorshid & Charles M. Schroeder & Jeffrey S. Moore & Hyosung An & Xiao Su & Ying Li & Qian Chen, 2024. "Beyond nothingness in the formation and functional relevance of voids in polymer films," Nature Communications, Nature, vol. 15(1), pages 1-16, December.

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