一种基于光致变色二芳基乙烯的新型荧光“开启”传感器，用于选择性检测铝（III）。
A novel fluorescence "turn-on" sensor based on a photochromic diarylethene for the selective detection of Al(III).
作者信息
Wang Niansheng, Wang Renjie, Tu Yayi, Pu Shouzhi, Liu Gang
机构信息
Jiangxi Key Laboratory of Organic Chemistry, Jiangxi Science and Technology Normal University, Nanchang 330013, PR China.
Jiangxi Key Laboratory of Organic Chemistry, Jiangxi Science and Technology Normal University, Nanchang 330013, PR China; College of Chemistry, Nanchang University, Nanchang, Jiangxi 330031, PR China.
出版信息
Spectrochim Acta A Mol Biomol Spectrosc. 2018 May 5;196:303-310. doi: 10.1016/j.saa.2018.02.018. Epub 2018 Feb 6.
A novel photochromic diarylethene with a triazole-containing 2-(2'-phenoxymethyl)-benzothiazole group has been synthesized via "click" reaction. The diarylethene exhibited good photochromism and photoswitchable fluorescence. Its fluorescence emission intensity was enhanced 7-fold by acids, accompanied by the red-shift of emission peak from 526nm to 566nm and the concomitant color change from dark to bright flavogreen. The diarylethene selectively formed a 1:1 metal complex with Al, resulting in a "turn-on" fluorescence signal. The complexation - reaction between Al and the diarylethene is reversible with the binding constant of 2.73×10Lmol. The limit of detection (LOD) of Al was determined to be 5.94×10molL. Based on this unimolecular platform, a logic circuit was fabricated using the fluorescence emission intensity at 572nm as the output and the combined stimuli of Al/EDTA and UV/Vis as the inputs.
通过“点击”反应合成了一种新型的含三唑基-2-(2'-苯氧基甲基)-苯并噻唑基团的光致变色二芳基乙烯。该二芳基乙烯表现出良好的光致变色性能和光开关荧光特性。其荧光发射强度在酸的作用下增强了7倍，同时发射峰从526nm红移至566nm，颜色也从暗黄绿色变为亮黄绿色。该二芳基乙烯与铝选择性地形成1:1的金属配合物，产生“开启”荧光信号。铝与二芳基乙烯之间的络合反应是可逆的，结合常数为2.73×10L/mol。铝的检测限确定为5.94×10mol/L。基于这个单分子平台，构建了一个逻辑电路，以572nm处的荧光发射强度作为输出，以铝/乙二胺四乙酸（EDTA）和紫外/可见光的组合刺激作为输入。
Zotero 插件