Elsevier

Tetrahedron Letters

Volume 57, Issue 21, 25 May 2016, Pages 2306-2310
Tetrahedron Letters

Square [5]molecular necklace formed from cucurbit[8]uril and carbazole derivative

https://doi.org/10.1016/j.tetlet.2016.04.048Get rights and content

Highlights

  • A square [5]molecular necklace was formed from CB[8] and carbazole derivative.

  • The pH-responsive behaviors of square [5]MN are comprehensively investigated.

  • CB[8] container as molecular linkers for self-assembly system is presented.

Abstract

The formation of square 5-member molecular necklace ([5]MN) is presented by utilizing the host–guest recognition-driven self-assembly between CB[8] and carbazole derivative 1·2Cl, which bears two 4,4′-bipyridin-1-ium (BP) arms with a orthogonal geometry. The self-assembly and stimuli-responsive behaviors of square [5]MN are comprehensively investigated by NMR (1H, COSY, NOSEY, and DOSY), UV–vis, DLS, and SEM methods.

Section snippets

Acknowledgments

We thank the National Natural Science Foundation of China (21472149) and Research Project of Shaanxi Provincial Education Department (15Js112) for financial support.

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