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Controllable Reassembly of a Dynamic Metallocage: From Thermodynamic Control to Kinetic Control
Author(s) -
Liu Luyao,
Lyu Guangxun,
Liu Caiping,
Jiang Feilong,
Yuan Daqiang,
Sun Qingfu,
Zhou Kang,
Chen Qihui,
Hong Maochun
Publication year - 2017
Publication title -
chemistry – a european journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.687
H-Index - 242
eISSN - 1521-3765
pISSN - 0947-6539
DOI - 10.1002/chem.201604540
Subject(s) - kinetic energy , ion , chemistry , product (mathematics) , kinetic control , crystallography , thermodynamics , materials science , physics , organic chemistry , mathematics , catalysis , quantum mechanics , geometry
A temperature‐ and anion‐induced coordination‐driven self‐assembly system based on a dynamic Ag 6 L 4 metallocage was developed. Induced by SbF 6 − anions, both kinetically controlled [Ag 3 L 2 (SbF 6 ) 3 ] n and thermodynamically controlled [Ag 2 L 2 (SbF 6 ) 2 ] n can be reassembled from discrete Ag 6 L 4 (SbF 6 ) 6 metallocages at 30 °C, and increasing the temperature to 40 °C results in selective inhibition of the kinetic product. Under the influence of BF 4 − anions, dynamic Ag 6 L 4 (BF 4 ) 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.