期刊
CELL REPORTS PHYSICAL SCIENCE
卷 2, 期 6, 页码 -出版社
CELL PRESS
DOI: 10.1016/j.xcrp.2021.100469
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资金
- National Research Foundation (NRF) Investigatorship in Singapore [NRF-NRFI05-2019-0001]
- Academic Research Fund (AcRF) Tier 2 from Ministry of Education in Singapore [MOE2017-T2-1-018]
Halogen bonding in quaternary ammonium iodide-containing polymers leads to diverse supramolecular assemblies in solution, on surfaces, and in solid phases, showcasing potential applications in capture and release of guest molecules.
Halogen bonding (XB) opens avenues to supramolecular assemblies. Here, we report XB-driven supramolecular assemblies of quaternary ammonium iodide (QAI)-containing polymers in three (solution, surface, and solid) phases. In the solution, QAI-containing block copolymers form unique self-assembly structures such as micrometersized giant vesicles (up to 5-mm diameter) and a 1-dimensional (1D) structure with multiple inter-vesicular linkages via XB. Exploiting the temperature dependence of XB strength, external molecules are successfully loaded and unloaded. On the surface, reversible XB crosslinking and decrosslinking of QAI-containing polymer brushes are achieved. The wettability of the polymer brush is finely tuned by the XB crosslinking density. In solid phase, QAI-containing monomers are co-crystalized (assembled) via XB. A polymer sheet is obtained via the solid-phase polymerization of the monomer co-crystal; the sheet enables capture and release of halogen-containing (XB-coordinating) guest molecules and thereby serves as an innovative host material.
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