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Wenjun Zhang, Jingui Qin and Chuluo Yang Synthesis and Photophysical Properties of Polyfluorene With Dipicolylamine Groups on the Side Chain: Highly Selective and Sensitive Detection of Histidine Macromolecular Rapid Communications 34

Version of Record online: 12 OCT 2012 | DOI: 10.1002/marc.201200538

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Two polyfluorenes with dipicolylamine (DPA) pendant, PF–TDPA and PF–HDPA, are designed and synthesized. Both the fluorescence of PF–TDPA and PF–HDPA can be efficiently quenched by Cu2+ ions in a mixed solvent of tetrahydrofuran and HEPES. However, only PF–TDPA with a rigid side chain can selectively and sensitively detect histidine over other amino acids with a fluorescence recovery with a detection limit of 0.1 × 10−6 M.

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