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Host-Enhanced Phenyl-Perfluorophenyl Polar-? Interactions.

ABSTRACT: Phenyl-perfluorophenyl polar-? interactions have been revisited for the design and fabrication of functional supramolecular systems. The relatively weak associative interactions (?G ? -1.0 kcal/mol) have limited their use in aqueous self-assembly to date. Herein, we propose a strategy to strengthen phenyl-perfluorophenyl polar-? interactions by encapsulation within a synthetic host, thus increasing the binding affinity to ?G= -15.5 kcal/mol upon formation of heteroternary complexes through social self-sorting. These heteroternary complexes were used as dynamic, yet strong, cross-linkers in the fabrication of supramolecular gels, which exhibited excellent viscoelasticity, stretchability, self-recovery, self-healing, and energy dissipation. This work unveils a general approach to exploit host-enhanced polar-? interactions in the design of robust aqueous supramolecular systems.

SUBMITTER: Huang Z

PROVIDER: S-EPMC7181256 | biostudies-literature | 2020 Apr

REPOSITORIES: biostudies-literature

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Host-Enhanced Phenyl-Perfluorophenyl Polar-π Interactions.

Huang Zehuan Z Chen Xiaoyi X Wu Guanglu G Metrangolo Pierangelo P Whitaker Daniel D McCune Jade A JA Scherman Oren A OA

Journal of the American Chemical Society 20200413 16

Phenyl-perfluorophenyl polar-π interactions have been revisited for the design and fabrication of functional supramolecular systems. The relatively weak associative interactions (ΔG ≈ -1.0 kcal/mol) have limited their use in aqueous self-assembly to date. Herein, we propose a strategy to strengthen phenyl-perfluorophenyl polar-π interactions by encapsulation within a synthetic host, thus increasing the binding affinity to ΔG= -15.5 kcal/mol upon formation of heteroternary complexes ...[more]

PMID: 32248683

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