Multiple Stimuli-Responsive Conformational Exchanges of Biphen[3]arene Macrocycle

Yiliang Wang; Liu-Pan Yang; Xiang Zhao; Lei Cui; Jian Li; Xueshun Jia; Jianhui Fang; Chunju Li

doi:10.3390/molecules25245780

Molecules (Dec 2020)

Multiple Stimuli-Responsive Conformational Exchanges of Biphen[3]arene Macrocycle

Yiliang Wang,
Liu-Pan Yang,
Xiang Zhao,
Lei Cui,
Jian Li,
Xueshun Jia,
Jianhui Fang,
Chunju Li

Affiliations

Yiliang Wang: Center for Supramolecular Chemistry and Catalysis and Department of Chemistry, School of Materials Science and Engineering, Shanghai University, Shanghai 200444, China
Liu-Pan Yang: Academy for Advanced Interdisciplinary Studies, Southern University of Science and Technology, Xueyuan Blvd 1088, Shenzhen 518055, China
Xiang Zhao: Center for Supramolecular Chemistry and Catalysis and Department of Chemistry, School of Materials Science and Engineering, Shanghai University, Shanghai 200444, China
Lei Cui: Center for Supramolecular Chemistry and Catalysis and Department of Chemistry, School of Materials Science and Engineering, Shanghai University, Shanghai 200444, China
Jian Li: Center for Supramolecular Chemistry and Catalysis and Department of Chemistry, School of Materials Science and Engineering, Shanghai University, Shanghai 200444, China
Xueshun Jia: Center for Supramolecular Chemistry and Catalysis and Department of Chemistry, School of Materials Science and Engineering, Shanghai University, Shanghai 200444, China
Jianhui Fang: Center for Supramolecular Chemistry and Catalysis and Department of Chemistry, School of Materials Science and Engineering, Shanghai University, Shanghai 200444, China
Chunju Li: Center for Supramolecular Chemistry and Catalysis and Department of Chemistry, School of Materials Science and Engineering, Shanghai University, Shanghai 200444, China

DOI: https://doi.org/10.3390/molecules25245780
Journal volume & issue: Vol. 25, no. 24
p. 5780

Abstract

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Conformational exchanges of synthetic macrocyclic acceptors are rather fast, which is rarely studied in the absence of guests. Here, we report multiple stimuli-responsive conformational exchanges between two preexisting conformations of 2,2′,4,4′-tetramethoxyl biphen[3]arene (MeBP3) macrocycle. Structures of these two conformations are both observed in solid state, and characterized by 1H NMR, 13C NMR and 2D NMR in solution. In particular, conformational exchanges can respond to solvents, temperatures, guest binding and acid/base addition. The current system may have a role to play in the construction of molecular switches and other stimuli-responsive systems.

Published in Molecules

ISSN: 1420-3049 (Online)
Publisher: MDPI AG
Country of publisher: Switzerland
LCC subjects: Science: Chemistry: Organic chemistry
Website: http://www.mdpi.com/journal/molecules

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