【摘 要】
：
A sensitive and selective zinc ion ratiometric fluorescence sensor has been synthesized and characterized.This material displays dual fluorescence.After the mat
【机 构】
：
State Key Laboratory of Molecular Reaction Dynamics,State Key Laboratory of Fine Chemicals
【基金项目】
：
the National Key Basic Research Special Foundation of China;国家自然科学基金
论文部分内容阅读
A sensitive and selective zinc ion ratiometric fluorescence sensor has been synthesized and characterized.This material displays dual fluorescence.After the material was bonded to a closed-shell metal ion,such as Zn2+,the recovery of the local excited fluorescence of the material-Zn2+complex,largely at the expense of the intramolecular charge transfer fluorescence,is consistent with the difference between selected orbital transitions of the free dye and the metal-chelated complex.For instance,the contribution of the πtpy→πtpy*transition becomes more prominent.This is also consistent with the results of the fluorescence decay behavior,measured via a time-correlated single photon counting setup.In contrast,the corresponding open shell Ni2+-bound complex quenches both kinds of photoluminescence,due to spin-orbit coupling.
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