Controllable Reassembly of a Dynamic Metallocage: From Thermodynamic Control to Kinetic Control

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• 作者：Luyao Liu ; Dr. Guangxun Lyu ; Dr. Caiping Liu ; Prof. Feilong Jiang ; Prof. Daqiang Yuan ; Prof. Qingfu Sun ; Dr. Kang Zhou ; Prof. Qihui Chen and Prof. Maochun Hong
• 刊名：Chemistry - A European Journal
• 出版年：2017
• 出版时间：January 5, 2017
• 年：2017
• 卷：23
• 期：2
• 页码：456-461
• 全文大小：1700K
• ISSN：1521-3765

文摘

A temperature- and anion-induced coordination-driven self-assembly system based on a dynamic Ag₆L₄ metallocage was developed. Induced by SbF₆⁻ anions, both kinetically controlled [Ag₃L₂(SbF₆)₃]_n and thermodynamically controlled [Ag₂L₂(SbF₆)₂]_n can be reassembled from discrete Ag₆L₄(SbF₆)₆ metallocages at 30 °C, and increasing the temperature to 40 °C results in selective inhibition of the kinetic product. Under the influence of BF₄⁻ anions, dynamic Ag₆L₄(BF₄)₆ metallocages self-assemble into the thermodynamically controlled polycage at 25 °C, and lowing the temperature to 0 °C leads to selective inhibition of the thermodynamic product. Thus, both kinetically and thermodynamically controlled assembly processes in a dynamic system can be selectively driven by suitable external stimuli.