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Controllable Reassembly of a Dynamic Metallocage: From Thermodynamic Control to Kinetic Control
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 metallocag...
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Published in: | Chemistry : a European journal 2017-01, Vol.23 (2), p.456-461 |
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Main Authors: | , , , , , , , , |
Format: | Article |
Language: | English |
Subjects: | |
Citations: | Items that this one cites Items that cite this one |
Online Access: | Get full text |
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Summary: | 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.
Total control: Temperature‐ and anion‐induced self‐assembly of Ag6L4 metallocages was studied. Induced by SbF6− anions, both kinetically controlled [Ag3L2(SbF6)3]n and thermodynamically controlled [Ag2L2(SbF6)2]n can reassemble 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, 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 (see scheme; L=tris(isonicotinoxymethyl)ethane). |
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ISSN: | 0947-6539 1521-3765 |
DOI: | 10.1002/chem.201604540 |