ArticleJournal of the American Chemical Society2026
Direct Visualization of Segment-Like Dynamics in Isolated Polymer Chains on Solid Surfaces.
Article in Journal of the American Chemical Society, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 1 paper.
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The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
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Who cites it
1 citing paper in PubMed.
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Authors and funding
7 authors.
Funding
No grant is acknowledged in the PubMed record.
Abstract
The performance of polymer-based composites, coatings, and adhesives is critically governed by the dynamics of chains at solid interfaces, yet their molecular principles remain unresolved. Here, we use time-resolved atomic force microscopy to directly map segment-level relaxation dynamics in isolated polystyrene chains on atomically flat substrates. We uncover pronounced spatial heterogeneity, with some segments accelerating with temperature while others slowing down, a counterintuitive behavior arising from transient adsorption. These dynamics propagate into neighboring chains through interfacial coupling and extend the influence of adsorption beyond direct contacts. Molecular dynamics simulations corroborate the coexistence of thermally activated and adsorption-driven slowing processes, and experiments on catechol-functionalized chains demonstrate generality and relevance to adhesion on metal oxides. Our results establish a real-space framework for linking interfacial structure and chain dynamics. They also reveal isolated chains on solids as nonequilibrium systems, offering a paradigm for molecular-level design of adhesion and interfacial toughness.
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Registered trials
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