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- Title
Redox‐Triggered Chirality Switching and Guest‐Capture/Release with a Pillar[6]arene‐Based Molecular Universal Joint.
- Authors
Xiao, Chao; Wu, Wanhua; Liang, Wenting; Zhou, Dayang; Kanagaraj, Kuppusamy; Cheng, Guo; Su, Dan; Zhong, Zhihui; Chruma, Jason J.; Yang, Cheng
- Abstract
A chiral electrochemically responsive molecular universal joint (EMUJ) was synthesized by fusing a macrocyclic pillar[6]arene (P[6]) to a ferrocene‐based side ring. A single crystal of an enantiopure EMUJ was successfully obtained, which allowed, for the first time, the definitive correlation between the absolute configuration and the circular dichroism spectrum of a P[6] derivative to be determined. The self‐inclusion and self‐exclusion conformational change of the EMUJ led to a chiroptical inversion of the P[6] moiety, which could be manipulated by both solvents and changes in temperature. The EMUJ also displayed a unique redox‐triggered reversible in/out conformational switching, corresponding to an occupation/voidance switching of the P[6] cavity, respectively. This phenomenon is an unprecedented electrochemical manipulation of the capture and release of guest molecules by supramolecular hosts.
- Subjects
CHIRALITY; SINGLE crystals; CIRCULAR dichroism; CUCURBITURIL
- Publication
Angewandte Chemie, 2020, Vol 132, Issue 21, p8171
- ISSN
0044-8249
- Publication type
Article
- DOI
10.1002/ange.201916285