基于萘酰亚胺衍生物的高选择性荧光比率型化学传感器用于检测铜（II）离子。
Highly selective fluorescence turn-on chemosensor based on naphthalimide derivatives for detection of copper(II) ions.
机构信息
Shanghai Key Laboratory of Functional Materials Chemistry and Institute of Fine Chemicals, East China University of Science and Technology, 130 Meilong Road, Shanghai 200237, PR China.
出版信息
Spectrochim Acta A Mol Biomol Spectrosc. 2013 Mar 15;105:57-61. doi: 10.1016/j.saa.2012.12.005. Epub 2012 Dec 14.
A new fluorescent probe, DN-SB, was synthesized. DN-SB was based on the naphthalimide derivatives and exhibited high selectivity and sensitivity for Cu(2+) ions. As a Cu(2+)-amplified fluorescent probe, its fluorescence spectrum showed 4.5-fold enhancement in the intensity of the signal at 519 nm on binding with the Cu(2+). Based on the fluorescence titration spectra and job's-plot, binding mode of DN-SB with Cu(2+) was proposed. Fluorescence intensity was linear with concentration of Cu(2+) cation in a range from 4 μM to 7 μM. DN-SB was also sensitive for copper ions. The detection limit was calculated to be 0.15 μM which indicated DN-SB was sensitive to Cu(2+).
一种新的荧光探针，DN-SB，被合成。DN-SB 基于萘酰亚胺衍生物，对 Cu(2+)离子表现出高选择性和灵敏度。作为一种 Cu(2+)-增强型荧光探针，其荧光光谱在与 Cu(2+)结合时在 519nm 处的信号强度增强了 4.5 倍。基于荧光滴定光谱和 Job 图，提出了 DN-SB 与 Cu(2+)的结合模式。荧光强度与 Cu(2+)阳离子的浓度在 4 μM 至 7 μM 的范围内呈线性关系。DN-SB 对铜离子也很敏感。检测限计算为 0.15 μM，表明 DN-SB 对 Cu(2+)敏感。
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