A Sleeping Host Awoken by Its Guest: Recognition and Sensing of Imidazole‐Containing Molecules Based on Double Cu²⁺ Translocation inside a Polyaza Macrocycle

Abstract

pH-driven double Cu2+ ion translocation occurs inside an heteroditopic macrocycle. The movement opens and closes the system allowing or preventing it to function as receptor for bidentate anions. When imidazole is added to a solution buffered at an appropriate pH value, opening of the system and substrate binding can be induced by the substrate itself, which results in a sharp color change (see picture). Supporting information for this article is available on the WWW under http://www.wiley-vch.de/contents/jc_2002/2004/z460568_s.pdf or from the author. Please note: The publisher is not responsible for the content or functionality of any supporting information supplied by the authors. Any queries (other than missing content) should be directed to the corresponding author for the article.