Highly emissive B←N unit containing four-coordinate C,N-Chelated organoboron compound for the detection of fluoride ions
Highly emissive B←N unit containing four-coordinate C,N-Chelated organoboron compound for the detection of fluoride ions
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含有四配位 C,N-螯合有机硼化合物的高发射 B-N 装置，用于检测氟离子
DOI：
10.1016/j.dyepig.2019.03.057
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发表时间：
2019
影响因子：
4.5
通讯作者：
He Gang
中科院分区：
文献类型：
--
作者：
Yan Ni;Wang Fengyan;Wei Junji;Song Jiale;Yan Luke;Luo Jishun;Fang Zhongyuan;Wang Zhijun;Zhang Weidong;He Gang
合成了具有高发射活性的B←N单元的四配位C，N-螯合有机硼化合物2。这种对空气和湿气稳定的化合物可用作THF中的关断型荧光氟化物（F−）传感器，具有良好的选择性和可逆性。密度泛函理论计算和荧光猝灭滴定结果表明，该传感过程是基于竞争反应：F−的引入导致了具有较强B单键的2-F以开放形式取代了具有较强B <$N键的2-F，从而导致了明显的吸收变化和荧光猝灭。
The highly emissive B←N unit containing four-coordinate C,N-chelated organoboron compound,2was synthesized. This air and moisture stable compound can be used as a turn-off type fluorescent fluoride (F−) sensor in THF with good selectivity and reversibility. The DFT calculation and the fluorescence quenching titration results showed that the mechanism of the sensing process was based on a competing reaction: the formation of2-Fwith the stronger Bsingle bondF bond in an open form took the place of2with B←N bond in a closed form when F−was introduced, leading to significant absorption changing and fluorescence quenching.