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Updated: May 31, 2025

Heterogeneous Removal of Water-Soluble Ruthenium Olefin Metathesis Catalyst from Aqueous Media Via Host-Guest Interaction
Published on: August 23, 2018
Ester-Bearing Calix[n]phenoxazines: Side Chain Enhanced Recognition and Redox-Responsive Reversible Host-Guest System
Lu Wang1,2, Yujun Zhang1, Junhao Chen1
1School of Pharmaceutical and Chemical Engineering & Institute for Advanced Studies, Taizhou University, 1139 Shifu Avenue, Taizhou 318000, Zhejiang,China.
Abstract:
We report an enhanced recognition and redox-responsive reversible host-guest system based on ester-bearing calix[n]phenoxazines. The carbonyl groups, oriented toward the cavity, act as the extra binding sites to enhance the binding affinity, which is confirmed by NMR and FTIR experiments and single-crystal structure analysis. Due to the oxidizable nature of calix[n]phenoxazine, a redox-controlled reversible response is established. This research not only provides a strategy to enhance the binding affinity in calix-like macrocyclic arenes but also marks a major advance in the development of a macrocyclic arene-based reversibly responsive system.
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