Tetrahedron

Cholic acid-based high sensitivity fluorescent sensor for α, ω-dicarboxylate: an intramolecular excimer emission quenched by complexation

SY Liu, YB He, WH Chan, AWM Lee

Index: Liu, Shun-Ying; He, Yong-Bing; Chan, Wing Hong; Lee, Albert W.M. Tetrahedron, 2006 , vol. 62, # 50 p. 11687 - 11696

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Citation Number: 43

Abstract

Fluorescent receptors (1 and 2) bearing two binding units on C3 and C24 and two signal display units on C7 and C12 of cholic acid, respectively, were designed and synthesized. Both 1 and 2 emit a much weaker fluorescence than that of the control compound 3 lacking of the binding units reflecting that a PET process originated from the C-3 thiourea group to the plural pyrenyl pendant groups is operative. Addition of terminal dicarboxylate anions ...