Fluorescent conjugated polymers (FCPs) have drawn intense attention in manufacturing chemosensors to screen various analytes in chemical/biological systems. They are more sensitive compared to small molecule sensors thanks to the collective signal amplification of the molecular wire configuration. Metal-catalyzed Sonogashira/Suzuki coupling reaction provides a valuable approach to bring molecular sensors into polymeric sensing devices. Facile structural adjustment of the receptors attached to the conjugated backbones has been made for specific sensing requirements. In one case, a novel polyelectrolyte, ttp-PPESO3 with terpyridine receptor and sulfonate groups was rationally assembled, and it showed great selectivity and sensitivity to Cu2+ (Fig. 1a). In another case, urea-PPESO3 was designed specifically to tackle the assignment of detecting fluoride ions. It displayed outstanding response to F- over the other halogens and could be used as a promising fluoride sensor (Fig. 1b). The synthesis and evaluation of these polymeric sensing devices will be discussed.

Metal coupline to bridge small molecule sensors and polymeric sensing platforms

254th National Meeting (2017)

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