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基于喹啉功能团的Zn^(2+)荧光探针 被引量:6

Selective Detection of Zn^(2+) Ion Based on Quinoline Fluorophore
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摘要 合成了含有喹啉功能团的锌离子荧光探针,N′-(喹啉-2-亚甲基)-3-(-喹啉-2-亚甲基胺)苯甲酰肼(QQB),该探针与Zn2+结合后荧光发射光谱由405nm红移至510nm,且荧光强度增强,具有较高的检测灵敏度。生物体内含量较高的金属阳离子K+、Na+、Mg2+、Ca2+以及微量金属离子Mn2+、Co2+、Ni2+等对QQB-Zn2+的荧光强度无显著影响,表明QQB对锌离子具有较高的选择性。光谱滴定和ESI-MS谱表明QQB与Zn2+以1∶1的化学计量比形成配合物。 ( E )-N′-( quinolin-2-ylmethylene )-3-[ ( E )-quinolin-2-ylmethyleneamino ]-benzohydrazide ( QQB), as a chelating fluorophore, can detect Zn^2+ selectively by shifting emission peak from 405 nm to 510 nm upon Zn^2+ addition. Zinc binding not only makes the emission band red-shifts, but also enhances the fluorescence intensity. The probe is highly selective for Zn^2+ over biologically relevant alkali metals, alkaline earth metals and the first row transition metals such as Mn^2+ , Co^2+ and Ni^2+. Spectrophotometric titration and ESI-MS spectra indicate the formation of a 1 : 1 complex of Zn^2+ with QQB.
出处 《发光学报》 EI CAS CSCD 北大核心 2008年第6期1091-1095,共5页 Chinese Journal of Luminescence
基金 国家自然科学基金(20801008) 大连理工大学人才启动基金(893306)资助项目
关键词 荧光探针 ZN^2+ 喹啉 化学传感器 fluorescent probe Zn^2+ quinoline chemosensor
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参考文献16

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