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Biomimetic chiral hydrogen-bonded organic-inorganic frameworks
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Biomimetic chiral hydrogen-bonded organic-inorganic frameworks
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Journal Article
Biomimetic chiral hydrogen-bonded organic-inorganic frameworks
2024
Overview
Assembly ubiquitously occurs in nature and gives birth to numerous functional biomaterials and sophisticated organisms. In this work, chiral hydrogen-bonded organic-inorganic frameworks (HOIFs) are synthesized via biomimicking the self-assembly process from amino acids to proteins. Enjoying the homohelical configurations analogous to
α
-helix, the HOIFs exhibit remarkable chiroptical activity including the chiral fluorescence (
g
lum
= 1.7 × 10
−3
) that is untouched among the previously reported hydrogen-bonded frameworks. Benefitting from the dynamic feature of hydrogen bonding, HOIFs enable enantio-discrimination of chiral aliphatic substrates with imperceivable steric discrepancy based on fluorescent change. Moreover, the disassembled HOIFs after recognition applications are capable of being facilely regenerated and self-purified via aprotic solvent-induced reassembly, leading to at least three consecutive cycles without losing the enantioselectivity. The underlying mechanism of chirality bias is decoded by the experimental isothermal titration calorimetry together with theoretic simulation.
Assembly is an interesting strategy to build chiral hierarchies with premade properties and functionalities. Here, the authors present assembled chiral hydrogen-bonded organic-inorganic frameworks with dynamical chiroptical activities and employ them as powerful and recoverable platforms for enantioselective recognition of chiral aliphatic substrates.
Publisher
Nature Publishing Group UK,Nature Publishing Group,Nature Portfolio
Subject
