Two-dimensional supramolecular spring: coordination driven reversible extension and contraction of bridged half rings

A tetraethylene glycol ether bridged derivative 9 has been designed and synthesized, and its two-dimensional (2D) self-assembled behavior has been investigated at the single-molecule level. Our results revealed that 9 generally adopted the fully extended state but changed to the contracted state whe...

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Veröffentlicht in:Chemical communications (Cambridge, England) England), 2014-08, Vol.50 (66), p.9369-9371
Hauptverfasser: Luo, Dapeng, Zhang, Xuemei, Shen, Yongtao, Xu, Jing, Shu, Lijin, Zeng, Qingdao, Wang, Chen
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Sprache:eng
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Zusammenfassung:A tetraethylene glycol ether bridged derivative 9 has been designed and synthesized, and its two-dimensional (2D) self-assembled behavior has been investigated at the single-molecule level. Our results revealed that 9 generally adopted the fully extended state but changed to the contracted state when triggered by K2CO3, and recovered the original fully extended conformation after subsequent addition of 18-crown-6. Such a coordination-controlled reversible assembly reveals supramolecular springs in response to chemical stimuli, which is of great interest in bionics and materials science.
ISSN:1359-7345
1364-548X
DOI:10.1039/c4cc02120g