一种基于带有三唑甲酰肼单元的二芳基乙烯的用于钙离子的高选择性荧光“开启”传感器。
A highly selective fluorescence "turn-on" sensor for Ca based on diarylethene with a triazozoyl hydrazine unit.
作者信息
Wang Zhen, Cui Shiqiang, Qiu Shouyu, Pu Shouzhi
机构信息
Jiangxi Key Laboratory of Organic Chemistry, Jiangxi Science and Technology Normal University Nanchang 330013 PR China
出版信息
RSC Adv. 2018 Aug 17;8(51):29295-29300. doi: 10.1039/c8ra06039h. eCollection 2018 Aug 14.
A new photochromic diarylethene derivative with a triazozoyl hydrazine unit has been designed and synthesized. Its photochromism and photoswitchable fluorescence behaviors were studied systematically by the stimuli of lights and chemical substances in acetonitrile solution. With the addition of Ca, the emission intensity enhanced 6.7 fold, accompanied by an obvious fluorescent color change from dark to light blue. The complexation between the derivative and Ca is reversible with the 1 : 1 stoichiometry, which was verified by Job's plot and MS. The limit of detection (LOD) for Ca was determined to be 2.49 × 10 mol L. Based on this unimolecular platform, a logic circuit was designed with fluorescence intensity at 482 nm as the output and the combined stimuli of UV/vis and Ca/EDTA as four inputs.
设计并合成了一种带有三唑并酰肼单元的新型光致变色二芳基乙烯衍生物。在乙腈溶液中，通过光和化学物质的刺激，系统地研究了其光致变色和光开关荧光行为。加入钙离子后，发射强度增强了6.7倍，同时伴随着明显的荧光颜色变化，从暗蓝色变为浅蓝色。该衍生物与钙离子之间的络合是可逆的，化学计量比为1:1，这通过Job曲线和质谱得到了验证。钙离子的检测限被确定为2.49×10⁻⁶ mol/L。基于这个单分子平台，设计了一个逻辑电路，以482 nm处的荧光强度作为输出，紫外/可见光和钙离子/乙二胺四乙酸的组合刺激作为四个输入。
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