Fluorescence sensing based on cation-induced conformational switching: copper-selective modulation of the photoinduced intramolecular charge transfer of a donor– …

J Cody, CJ Fahrni

Index: Cody, John; Fahrni, Christoph J. Tetrahedron, 2004 , vol. 60, # 49 p. 11099 - 11107

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Citation Number: 52

Abstract

The fluorescence emission energy of donor–acceptor substituted biphenyls is highly sensitive towards conformational changes of the interannular twist angle. By integrating 4- dimethylamino-4′-cyano-biphenyl into the ligand backbone of a thioether-rich metal receptor we designed a fluorescence sensor that exhibits high selectivity towards copper. Upon metal binding the ligand undergoes a significant conformational change, which ...