A New Indicator for Potassium Ions at Physiological pH by Using a Macrocyclic Luminescent Metal Complex

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This article is corrected by:

  1. Errata: Retraction: A New Indicator for Potassium Ions at Physiological pH by Using a Macrocyclic Luminescent Metal Complex Volume 19, Issue 19, 5783, Article first published online: 2 May 2013

Abstract

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Anyone for a π-type sandwich? A luminescent indicator was developed based on the potassium-binding-induced conformational change of a macrocyclic terbium complex. The indicator adopts a random coil conformation in the absence of K+. In the presence of K+, it forms a π-type sandwich complex with the arene, resulting in an effective energy transfer and strong luminescence (see figure).

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