Photoresponsive Crown Ethers. Part 11. Azobenzene‐Pillared Cylindrical Macrocycle As a Photoresponsive Receptor

Seiji Shinkai, Yoshihiro Honda, Kaori Ueda, Osamu Manabe

Research output: Contribution to journalArticlepeer-review

7 Citations (Scopus)

Abstract

A cylindrical ionophore (1) in which two diaza‐crown ethers are linked by two azobenzene pillars serves as a photoresponsive host molecule. In alkaline solution containing K+, (1) forms a cascade complex with dianionic guest molecules, but photoirradiated (1) which has a shortened cylinder cannot bind the guest molecules so effectively as (1). (1) solubilised in acidic aqueous solution by protonation of four tertiary nitrogens provides a hydrophobic cavity to bind several anionic azo dyes. The association is also suppressed by photoirradiation. The results indicate that parallel array of the azobenzene segments in (1) provides a host cavity and the photoinduced structural change is readily reflected by the association tendency. This is the first example for the photoresponsive inclusion complex.

Original languageEnglish
Pages (from-to)302-306
Number of pages5
JournalIsrael Journal of Chemistry
Volume24
Issue number4
DOIs
Publication statusPublished - Jan 1 1984
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • Chemistry(all)

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