科研之友
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摘要
The highly selective ratiometric "turn-on" fluorescent sensing of Zn2+ ion involving 2-(1H-tetrazole-5-yl) pyridine (2PT) in aqueous medium is reported, which is not observed when other metal ions are present. Upon 2PT binding selectively with Zn2+ ion, a fluorescence enhancement is observed that is attributed to an enhancement of localized emission and suppression of excited-state intramolecular proton transfer. The described sensing system involving 2PT is also successfully applied to the detection of Zn2+ ion in real samples with a detection limit of 7.5 x 10(-7) m.
- 出版日期2014-9
