Title: A Flexible Hydrogen‐Bonded Organic Framework Constructed from a Tetrabenzaldehyde with a Carbazole N−H Binding Site for the Highly Selective Recognition and Separation of Acetone.
Authors: Chen, Liangji; Yuan, Zhen; Zhang, Hao; Ye, Yingxiang; Yang, Yisi; Xiang, Fahui; Cai, Kaicong; Xiang, Shengchang; Chen, Banglin; Zhang, Zhangjing
Abstract: Rational design of hydrogen‐bonded organic frameworks (HOFs) with multiple functionalities is highly sought after but challenging. Herein, we report a multifunctional HOF (HOF‐FJU‐2) built from 4,4′,4′′,4′′′‐(9H‐carbazole‐1,3,6,8‐tetrayl)tetrabenzaldehyde molecule with tetrabenzaldeyde for their H bonding interactions and carbazole N−H site for its specific recognition of small molecules. The Lewis acid N−H sites allow HOF‐FJU‐2 facilely separate acetone from its mixture with another solvent like methanol with smaller pKa value. The donor (D)‐π‐acceptor (A) aromatic nature of the organic building molecule endows this HOF with solvent dependent luminescent/chromic properties, so the column acetone/methanol separation on HOF‐FJU‐2 can be readily visualized.
Subjects: BINDING sites; SMALL molecules; ACETONE; CARBAZOLE; LEWIS acids
Publication: Angewandte Chemie, 2022, Vol 134, Issue 51, p1
ISSN: 0044-8249
Publication type: Academic Journal
DOI: 10.1002/ange.202213959

A Flexible Hydrogen‐Bonded Organic Framework Constructed from a Tetrabenzaldehyde with a Carbazole N−H Binding Site for the Highly Selective Recognition and Separation of Acetone.

Chen, Liangji; Yuan, Zhen; Zhang, Hao; Ye, Yingxiang; Yang, Yisi; Xiang, Fahui; Cai, Kaicong; Xiang, Shengchang; Chen, Banglin; Zhang, Zhangjing