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Uniform shape monodisperse single chain nanocrystals by living aqueous catalytic polymerization

Uniform shape monodisperse single chain nanocrystals by living aqueous catalytic polymerization

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SCHNITTE, Manuel, Anne STAIGER, Larissa A. CASPER, Stefan MECKING, 2019. Uniform shape monodisperse single chain nanocrystals by living aqueous catalytic polymerization. In: Nature Communications. 10(1), 2592. eISSN 2041-1723. Available under: doi: 10.1038/s41467-019-10692-1

@article{Schnitte2019-06-13Unifo-46021, title={Uniform shape monodisperse single chain nanocrystals by living aqueous catalytic polymerization}, year={2019}, doi={10.1038/s41467-019-10692-1}, number={1}, volume={10}, journal={Nature Communications}, author={Schnitte, Manuel and Staiger, Anne and Casper, Larissa A. and Mecking, Stefan}, note={Article Number: 2592} }

2019-06-17T09:43:57Z Uniform shape monodisperse single chain nanocrystals by living aqueous catalytic polymerization Staiger, Anne Casper, Larissa A. Mecking, Stefan 2019-06-17T09:43:57Z 2019-06-13 Staiger, Anne eng Schnitte, Manuel Casper, Larissa A. The preparation of polymer nanoparticles with a uniform size and shape, beyond spheres, is an unresolved problem. Here we report a living aqueous catalytic polymerization, resulting in particles grown by a single active site and composed of a single ultra high molecular weight polyethylene (UHMWPE) chain. The control on a molecular level (M<sub>w</sub>/M<sub>n </sub>= 1.1-1.2) and at the same time on a particle level (PDI < 0.05) together with the immediate deposition of the growing chain on the growing nanocrystal results in a distinct evolution of the particle morphology over time. These uniform nanocrystals are obtained as concentrated aqueous dispersions of > 10 wt-% (N ≈ 10<sup>19</sup> particles L-1) polymer content. Key to this robust procedure to single chain nanoparticles are long-lived water-stable Ni(II) catalysts that do not undergo any chain transfer. These findings are a relevant step towards polymer materials based on nanoparticle assembly. Schnitte, Manuel Mecking, Stefan terms-of-use

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