Fluorescence switches triggered by metal ions

P Wessig, S Czapla, U Schedler

Index: Wessig, Pablo; Czapla, Sylvia; Schedler, Uwe Helvetica Chimica Acta, 2008 , vol. 91, # 6 p. 1166 - 1176

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Citation Number: 2

Abstract

Abstract Molecular switches 1 with a modular architecture whose functional principle is based on conformational changes around two acetylene axes were developed. By systematic screening of various metal ions, it was found that especially Pb 2+ ions effectively trigger the switching event. The reporting of this event takes place by the change of the ratio between excimer and monomer fluorescence emission of two pyrene moieties.