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Phosphorescent extensophores expose elastic nonuniformity in polymer networks

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Title
Phosphorescent extensophores expose elastic nonuniformity in polymer networks
Author(s)
Kaikai Zheng; Yifan Zhang; Bo Li; Steve Granick
Publication Date
2023-02
Journal
Nature Communications, v.14, no.1
Publisher
Nature Research
Abstract
Networks and gels are soft elastic solids of tremendous technological importance that consist of cross-linked polymers whose structure and connectivity at the molecular level are fundamentally nonuniform. Pre-failure local mechanical responses are not understood at the level of individual crosslinks, despite the enormous attention given to their macroscopic mechanical responses and to developing optical probes to detect their loci of mechanical failure. Here, introducing the extensophore concept to measure nondestructive forces using an optical probe with continuous force readout proportional to deformation, we show that the crosslinks in an elastic polymer network extend, fluctuate, and deform with a wide range of molecular individuality. Requiring little specialized equipment, this foundational single-molecule phosphorescence approach, applied here to polymer science and engineering, can be useful to a broad science and engineering community. © 2023, The Author(s).
URI
https://pr.ibs.re.kr/handle/8788114/13525
DOI
10.1038/s41467-023-36249-x
ISSN
2041-1723
Appears in Collections:
Center for Soft and Living Matter(첨단연성물질 연구단) > 1. Journal Papers (저널논문)
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