Bulk transparent supramolecular glass enabled by host–guest molecular recognition

Changyong Cai, Shuanggen Wu, Yunfei Zhang, Fenfang Li, Zhijian Tan () and Shengyi Dong ()
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Changyong Cai: Hunan University
Shuanggen Wu: Hunan University
Yunfei Zhang: Hunan University
Fenfang Li: Central South University
Zhijian Tan: Chinese Academy of Agricultural Sciences
Shengyi Dong: Hunan University

Nature Communications, 2024, vol. 15, issue 1, 1-9

Abstract: Abstract Supramolecular glass is a non-covalently cross-linked amorphous material that exhibits excellent optical properties and unique intrinsic structural features. Compared with artificial inorganic/organic glass, which has been extensively developed, supramolecular glass is still in the infancy stage, and itself is rarely recognized and studied thus far. Herein, we present the development of the host–guest molecular recognition motifs between methyl-β-cyclodextrin and para-hydroxybenzoic acid as the building blocks of supramolecular glass. Non-covalent polymerization resulting from the host–guest complexation and hydrogen bonding formation enables high transparency and bulk state to supramolecular glass. Various advantages, including recyclability, compatibility, and thermal processability, are associated with dynamic assembly pattern. Short-range order (host–guest complexation) and long-range disorder (three dimensional polymeric network) structures are identified simultaneously, thus demonstrating the typical structural characteristics of glass. This work provides a supramolecular strategy for constructing transparent materials from organic components.

Date: 2024
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DOI: 10.1038/s41467-024-48089-4

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