Stable pillar[5]arene-based pseudo[1 ]rotaxanes formed in polar solution

Mono-alkyl-functionalized pillar[5]arenes PI, P2, and P3 were synthesized by click reaction, which exhibited different self-assembly behavior in polar solvent DMSO. Stable pseudo[ 1 ]rotaxane was formed by the self-complexation from P1 or P2, whereas, concentration-dependent pseudorotaxane structure...

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Bibliographic Details
Published in:Chinese chemical letters 2016-11, Vol.27 (11), p.1655-1660
Main Authors: Wu, Xuan, Gao, Lei, Sun, Junzhao, Hu, Xiao-Yu, Wang, Leyong
Format: Article
Language:English
Subjects:
Dynamic self-assembly
Na+-induced pseudorotaxanes
Pillararene
Polar solution
Pseudorotaxanes
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Summary:Mono-alkyl-functionalized pillar[5]arenes PI, P2, and P3 were synthesized by click reaction, which exhibited different self-assembly behavior in polar solvent DMSO. Stable pseudo[ 1 ]rotaxane was formed by the self-complexation from P1 or P2, whereas, concentration-dependent pseudorotaxane structures were generated by P3 which bearing more flexible side chain. Interestingly, the obtained pseudo[1]rotaxanes exhibited a dynamic fast assembly process upon adding NaBF4, resulting in the formation of Na＋-induced pseudorotaxanes.
ISSN:1001-8417
1878-5964
DOI:10.1016/j.cclet.2016.05.004