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Updated: Dec 24, 2025

1,3,5-Triphenylbenzene and Corannulene as Electron Receptors for Lithium Solvated Electron Solutions
Published on: October 10, 2016
A prospective material for the highly selective extraction of lithium ions based on a photochromic crowned
Enze Li1, Jin Kang, Peiyuan Ye
1Institute of Resources and Environmental Engineering, State Environmental Protection Key Laboratory of Efficient Utilization Technology of Coal Waste Resources, Shanxi Collaborative Innovation Center of High Value-added Utilization of Coal-related Wastes, Shanxi University, No. 92 Wucheng Road, Taiyuan, Shanxi 030006, China. cfangqin@sxu.edu.cn.
Abstract:
The recovery of lithium from salt lake brines with a high Mg/Li ratio continues to be a challenge due to the very similar ionic properties of Li+ and Mg2+ in aqueous solutions. Here we develop a novel strategy to extract Li+ based on a sensitive photochromic crowned spiropyran probe with the control of UV light. The probe presents high selectivity for Li+ complexation even in solutions with a high Mg/Li ratio up to 1000. On this basis, a high-stability "spiropyran-crown ether" polymer composite membrane material for the visualization and efficient extraction of trace lithium ions in the complicated system of salt lake brines with high ionic strengths will be constructed in the future.
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