Robust Supramolecular Nano-Tunnels Built from Molecular Bricks**



Wei, Peifa, He, Xuan, Zheng, Zheng, He, Donglin ORCID: 0000-0002-5512-8162, Li, Qiyao, Gong, Junyi, Zhang, Jun, Sung, Herman HY, Williams, Ian D, Lam, Jacky WY
et al (show 2 more authors) (2021) Robust Supramolecular Nano-Tunnels Built from Molecular Bricks**. ANGEWANDTE CHEMIE-INTERNATIONAL EDITION, 60 (13). pp. 7148-7154.

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Abstract

Herein we report a linear ionic molecule that assembles into a supramolecular nano-tunnel structure through synergy of trident-type ionic interactions and π-π stacking interactions. The nano-tunnel crystal exhibits anisotropic guest adsorption behavior. The material shows good thermal stability and undergoes multi-stage single-crystal-to-single-crystal phase transformations to a nonporous structure on heating. The material exhibits a remarkable chemical stability under both acidic and basic conditions, which is rarely observed in supramolecular organic frameworks and is often related to structures with designed hydrogen-bonding interactions. Because of the high polarity of the tunnels, this molecular crystal also shows a large CO<sub>2</sub> -adsorption capacity while excluding other gases at ambient temperature, leading to high CO<sub>2</sub> /CH<sub>4</sub> selectivity. Aggregation-induced emission of the molecules gives the bulk crystals vapochromic properties.

Item Type: Article
Uncontrolled Keywords: aggregation-induced emission, CO2 adsorption, crystal transformations, linear organic salts, porous molecular crystals
Depositing User: Symplectic Admin
Date Deposited: 18 Dec 2020 09:59
Last Modified: 18 Jan 2023 23:06
DOI: 10.1002/anie.202013117
Related URLs:
URI: https://livrepository.liverpool.ac.uk/id/eprint/3110769