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Benzodithieno-imidazole based pi-conjugated fluorescent polymer probe for selective sensing of Cu2+

机译：基于苯并噻吩并咪唑的π共轭荧光聚合物探针，用于Cu2 +的选择性传感

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摘要

pi-Conjugated polymers appended with binding sites are of considerable interest as an evolving new class of heavy and toxic metal ion sensors through fluorescence quenching. In this study we describe the synthesis and characterization of a p-bromophenyl substituted benzodithieno-imidazole based soluble and rigid pi-conjugated polymer with N and S donors exhibiting outstanding sensitivity towards Cu2+ by emission quenching through photoinduced electron transfer (PET). Detailed photophysical and ion sensing studies have been demonstrated to understand insight of the polymer-metal ion interaction which is responsible for selective fluorescence quenching. The corresponding polymer is also explored as a thin-film polymeric sensor towards Cu2+ as monitored by a photoluminescence study.
机译：通过荧光猝灭，带有结合位点的π共轭聚合物成为新兴的重金属和有毒金属离子传感器的新兴类别。在这项研究中，我们描述了基于对溴苯基取代的苯并二硫代咪唑基的可溶性和刚性pi共轭聚合物的合成和表征，其中N和S供体通过光致电子转移（PET）发射猝灭对Cu2 +表现出出色的敏感性。已进行了详细的光物理和离子感测研究，以了解聚合物-金属离子相互作用的见解，该相互作用可导致选择性荧光猝灭。如通过光致发光研究所监测的，还探索了相应的聚合物作为对Cu2 +的薄膜聚合物传感器。

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