一种基于硼二吡咯发色团的桨状结构化学传感器，用于顺序识别铜离子和硫酸氢根离子。
A chemosensor with a paddle structure based on a BODIPY chromophore for sequential recognition of Cu and HSO.
作者信息
Li Shengling, Cao Duanlin, Hu Zhiyong, Li Zhichun, Meng Xianjiao, Han Xinghua, Ma Wenbing
机构信息
School of Chemical Engineering and Technology, North University of China Taiyuan 030051 P. R. China
National Demonstration Center for Experimental Comprehenisve Chemical Engineering Education, North University of China Taiyuan 030051 P. R. China.
出版信息
RSC Adv. 2019 Oct 28;9(59):34652-34657. doi: 10.1039/c9ra08345f. eCollection 2019 Oct 23.
In this study, a highly selective chemosensor ML based on a BODIPY fluorescent chromophore was synthesized for sequential recognition of Cu and HSO in a CHOH/HO (99 : 1 v/v) system, which contained three recognition sites and its structure characterized by H NMR, C NMR and ESI-HR-MS. The sensor ML showed an obvious "on-off" fluorescence quenching response toward Cu and the ML-Cu complex showed an "off-on" fluorescence enhancement response toward HSO . The detection limit of the sensor ML was 0.36 μM to Cu and 1.4 μM to HSO . In addition, the sensor ML showed a 1 : 3 binding stoichiometry to Cu and the recovery rate of ML-Cu complex identifying HSO could be over 70%. Sensor ML showed remarkable detection ability in a pH range of 4-8.
在本研究中，合成了一种基于BODIPY荧光发色团的高选择性化学传感器ML，用于在CHOH/HO（99∶1 v/v）体系中对Cu和HSO进行顺序识别，该体系包含三个识别位点，其结构通过H NMR、C NMR和ESI-HR-MS进行表征。传感器ML对Cu呈现出明显的“开-关”荧光猝灭响应，而ML-Cu配合物对HSO呈现出“关-开”荧光增强响应。传感器ML对Cu的检测限为0.36 μM，对HSO的检测限为1.4 μM。此外，传感器ML与Cu的结合化学计量比为1∶3，ML-Cu配合物识别HSO的回收率可达70%以上。传感器ML在4-8的pH范围内显示出显著的检测能力。
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