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Chen J, Zhang W, Yang W, Xi F, He H, Liang M, Dong Q, Hou J, Wang M, Yu G, Zhou J. Separation of benzene and toluene associated with vapochromic behaviors by hybrid[4]arene-based co-crystals. Nat Commun 2024; 15:1260. [PMID: 38341431 DOI: 10.1038/s41467-024-45592-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2023] [Accepted: 01/29/2024] [Indexed: 02/12/2024] Open
Abstract
The combination of macrocyclic chemistry with co-crystal engineering has promoted the development of materials with vapochromic behaviors in supramolecular science. Herein, we develop a macrocycle co-crystal based on hybrid[4]arene and 1,2,4,5-tetracyanobenzene that is able to construct vapochromic materials. After the capture of benzene and toluene vapors, activated hybrid[4]arene-based co-crystal forms new structures, accompanied by color changes from brown to yellow. However, when hybrid[4]arene-based co-crystal captures cyclohexane and pyridine, neither structures nor colors change. Interestingly, hybrid[4]arene-based co-crystal can separate benzene from a benzene/cyclohexane equal-volume mixture and allow toluene to be removed from a toluene/ pyridine equal-volume mixture with purities reaching 100%. In addition, the process of adsorptive separation can be visually monitored. The selectivity of benzene from a benzene/cyclohexane equal-volume mixture and toluene from a toluene/ pyridine equal-volume mixture is attributed to the different changes in the charge-transfer interaction between hybrid[4]arene and 1,2,4,5-tetracyanobenzene when hybrid[4]arene-based co-crystal captures different vapors. Moreover, hybrid[4]arene-based co-crystal can be reused without losing selectivity and performance. This work constructs a vapochromic material for hydrocarbon separation.
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Affiliation(s)
- Jingyu Chen
- Department of Chemistry, College of Sciences, Northeastern University, Shenyang, 110819, PR China
| | - Wenjie Zhang
- Department of Chemistry, College of Sciences, Northeastern University, Shenyang, 110819, PR China
| | - Wenzhi Yang
- Department of Chemistry, College of Sciences, Northeastern University, Shenyang, 110819, PR China
| | - Fengcheng Xi
- Department of Chemistry, College of Sciences, Northeastern University, Shenyang, 110819, PR China
| | - Hongyi He
- Department of Chemistry, College of Sciences, Northeastern University, Shenyang, 110819, PR China
| | - Minghao Liang
- Department of Chemistry, College of Sciences, Northeastern University, Shenyang, 110819, PR China
| | - Qian Dong
- Department of Chemistry, College of Sciences, Northeastern University, Shenyang, 110819, PR China
| | - Jiawang Hou
- Department of Chemistry, College of Sciences, Northeastern University, Shenyang, 110819, PR China
| | - Mengbin Wang
- ZJU-Hangzhou Global Scientific and Technological Innovation Center, Zhejiang University, Hangzhou, 311215, PR China.
| | - Guocan Yu
- Key Laboratory of Bioorganic Phosphorus Chemistry & Chemical Biology, Department of Chemistry, Tsinghua University, Beijing, 100084, PR China.
| | - Jiong Zhou
- Department of Chemistry, College of Sciences, Northeastern University, Shenyang, 110819, PR China.
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