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Published on: January 23, 2018
Liquid-Assisted One-Pot Mechanosynthesis and Properties of Neutral Donor-Acceptor [2]Rotaxanes
Hai-Gen Li1, Guan-Wu Wang1,2
1CAS Key Laboratory of Soft Matter Chemistry, Collaborative Innovation Center of Chemistry for Energy Materials (iChEM), Hefei National Laboratory for Physical Sciences at Microscale, and Department of Chemistry, University of Science and Technology of China , Hefei, Anhui 230026, P. R. China.
Abstract:
An efficient liquid-assisted one-pot two-step synthesis of neutral donor-acceptor [2]rotaxanes has been successfully realized under high-speed vibration milling conditions, by taking advantage of the donor-acceptor interaction between the electron-rich naphthalene unit of a macrocyclic polyether and the electron-deficient naphthalene diimide unit of a thread component for the threading process and click reaction as the stoppering process. The present method provides a powerful, fast, and environmentally benign alternative to traditional solvent-based approaches due to its notable advantages such as very small amount of solvent, no external heating, shorter reaction time, and higher yield. In addition, the charge-transfer interaction and electrochemically induced shuttling of the synthesized neutral donor-acceptor [2]rotaxanes have been demonstrated.
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