Establishment of a new molecular model for mercury determination verified by single crystal X-ray diffraction, spectroscopic analysis and biological potentials
作者:Jiapei Gu、Feifan Zhang、Ziman Zheng、Xiangqian Li、Runxuan Deng、Zhan Zhou、Lufang Ma、Wanqiang Liu、Qianming Wang
DOI:10.1016/j.cclet.2020.09.021
日期:2021.1
dicyanoisophorone dye (ICM-S) has been evolved to 2-(3-(4-hydroxystyryl)-5,5-dimethylcyclohex-2-enylidene) malononitrile (ICM−OH). Clear evidences in the chemical processes can be identified via single crystal X-ray diffraction, spectroscopic analysis, photophysical studies and titration experiments. With the aim of exploring its potential in biological systems, its in vitro responses to Hg2+ have been evaluated
摘要已经开发了用于实时分析的多种分子探针,但是大多数有机荧光团具有小的斯托克斯位移和无法避免的自吸收或内部过滤作用。在这项研究中,一种新的基于二氰基异佛尔酮的衍生物(E)-O-(4-(2-(3-(二氰基亚甲基)-5,5-二甲基环己-1-烯-1-基)乙烯基)苯基)二苯基硫代磷酸酯(λex (405nm,λem= 551nm,表示为ICM-S),具有强推挽电子效应,并且在从407nm到426nm的吸收中表现出红移,并且在曝光时从浅黄色到深黄色具有明显的颜色变化。到Hg2 +。此外,容易辨别的荧光颜色变化遵循从绿色到绿色的路线,在Hg2 +存在下,在0-90 µmol / L的范围内(检测限= 137 nmol / L),从黄色到红色可以通过肉眼在紫外线灯的照射下观察到。氯二苯膦和升华硫作为响应位点加入,PO键在添加汞离子后被裂解。在识别过程中,这种二氰基异佛尔酮染料(ICM-S)已进化为2-(3-(4-羟基苯乙烯基)-5