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- W2084910828 abstract "In this study, we synthesized a new fluorescent polypyridyl dye 2 containing a 2,2'-bipyridine in the center and two 2,2':6',2-terpyridines at both ends. When exposed to various metal ions, the dye 2 showed selective fluorescence responses. In the presence of <TEX>$Cu^{2+}$</TEX> and <TEX>$Ni^{2+}$</TEX>, it exhibited a highly effective fluorescence quenching, leading to large <TEX>$K_{sv}$</TEX> values of up to <TEX>$10^5$</TEX>. In response to most other metal ions including <TEX>$Al^{3+}$</TEX>, in contrast, its fluorescence changes little, showing a small Ksv value at <TEX>$10^2$</TEX>. Meanwhile, the compound 2 revealed a differentiated fluorescence response to <TEX>$Zn^{2+}$</TEX>, which is evidenced by a large red shift of > 100 nm. Such a red shift from the ion binding is attributed to the planarization of the bipyridyl unit extending the effective conjugation length in conjunction. A polypyridyl compound will find important usefulness in chemosensor application due to its selective binding to metal ions. Subsequent research concerned with modified derivatives is currently going on, as a way to provide high solubility even after metal-complexing." @default.
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- W2084910828 date "2013-12-27" @default.
- W2084910828 modified "2023-09-24" @default.
- W2084910828 title "Selective Metal Ion Sensing of Bipyridine-Bisterpyridine containing Fluorescent Dyes" @default.
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- W2084910828 doi "https://doi.org/10.5764/tcf.2013.25.4.254" @default.
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