Photoswitchable Association of an Azobenzne–Bipyridinium Diad to Eosin: Photostimulated “On‐Off” Guest Binding

Itamar Willner*, Sharon Marx, Yoav Eichen

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

42 Scopus citations

Abstract

The reversible photoinduced cis–trans isomerization of the azobenzene unit in 1, together with the distinctly different association constants of the cis and trans isomers for the binding of 1 to eosin Y (2, K = 38 000 and 3000 M−1 1, respectively) can be utilized to construct a molecular switch for the formation and dissociation of the complex between 1 and 2 that is light‐controlled. Such photo‐switchable units are important in information storage systems and signal processing on the molecular level. (Figure Presented.)

Original languageEnglish
Pages (from-to)1243-1244
Number of pages2
JournalAngewandte Chemie - International Edition
Volume31
Issue number9
DOIs
StatePublished - Sep 1992

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