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    Light-adjusted supramolecular host–guest interfacial recognition for reconfiguring soft colloidal aggregates

    Year: 2023

    Journal: Journal of Colloid and Interface Science, Volume 645, 2023-09-01

    Authors: Yang, Shujuan; Qin, Wenqi; Zhao, Xinyu; He, Furui; Liu, Haifang; Zhou, Qichang; Huang, Junhao; Yu, Gaobo; Feng, Yuhong; Li, Jiacheng

    Keywords: And photo-stimulated responsiveness; Host–guest interfacial template; Interfacial instability; Self-adjusted amphiphilicity; Supramolecular polymers

    The soft interfacial template-assisted confined self-assembly of block copolymers (BCPs) guiding colloidal aggregates has been extensively investigated by interfacial instability. Whether the macromolecular polymer architectonics possessed stimulus-responsive self-regulated structural controllability more readily implement the morphological diversity of colloidal aggregates. Herein, we in-situ constructed the alginate-modified β-cyclodextrin/azobenzene-functionalized alkyl chains (Alg-β-CD/AzoC12) system by supramolecular host–guest interfacial recognition-engineered strategy, in which possessed photo-stimulated responsive structural reconfigurability by modulating assembly/disassembly behaviors between CD and Azo at oil/water interface. The host–guest droplet interfaces acted as soft templates managing interfacial instability by synergistically integrating supra-amphiphilic host–guest polymers with cosurfactants, further constructing various soft supracolloidal aggregates, including soft nanoaggregates, microspheres with tunable degrees of surface roughness. Additionally, the stimuli-altering structural reconfigurability of supramolecular host–guest polymers was regulated by ultraviolet/visible irradiation, endowing soft aggregates with structural diversity. It’s highly anticipated that the supramolecular host–guest interfacial recognition self-assembly establishes great bridge between supramolecular host–guest chemistry and colloid interface science.
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