期刊
CELL REPORTS PHYSICAL SCIENCE
卷 4, 期 10, 页码 -出版社
CELL PRESS
DOI: 10.1016/j.xcrp.2023.101631
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This study proposes a strategy for synthesizing molecular cages by endo-modification of steric hindrance groups on dissymmetrical ligands. The resulting cages have low symmetry and dissimilar chemical environments, which has significant implications for constructing new supramolecular systems.
Steric hindrance groups hold a pivotal role in the self-assembly process of biomolecules. Building on this insight, a strategy for synthesizing outward-everted molecular cages by endo-modification of steric hindrance groups on dissymmetrical ligands is proposed in this work. Specifically, the dissymmetrical ligands have been endomodified with five distinct bulky hindrance groups, and they are respectively assembled with Pd(II). In order to relieve steric crowding, all hindering groups are oriented outward from the cage, and the arrangement of the two dissymmetrical ligands between adjacent Pd(II) is opposite, indicating high flexibility in regulation. As a result, a low-symmetry hexameric or octameric cage with dissimilar chemical environments for the ligands can be assembled. This work provides valuable insights and has significant implications for the construction of new supramolecular systems.
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