Sugar–Poly(para‐phenylene ethynylene) Conjugates as Sensory Materials: Efficient Quenching by Hg2+ and Pb2+ Ions
- 1 December 2004
- journal article
- research article
- Published by Wiley in Chemistry – A European Journal
- Vol. 10 (24) , 6247-6254
- https://doi.org/10.1002/chem.200400788
Abstract
Three polar poly(para-phenylene ethynylene)s (PPE) were synthesized by utilizing the Heck–Sonogashira protocol. Two of the PPEs carry β-glucopyranose substituents. Depending upon the linker used between the glycol units and the backbone, the fluorescence of these PPEs can be quenched by Hg2+ and Pb2+ to a varying degree. Monomeric model compounds that are substituted with only one glucose unit are not efficiently quenched. The presence of many glucose substituents in one PPE assembly led to a large increase in the binding constant to Hg2+ and quenching of the fluorescence was amplified.Keywords
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