双氰基二苯代乙烯型双光子荧光汞离子探针

发布时间：2018-05-08 04:25

本文选题：双光子荧光探针 + 汞离子　；参考：《高等学校化学学报》2017年10期

【摘要】：分别以双氰基二苯代乙烯(DCS)和双[2-(2-羟乙基硫基)乙基]氨(HSA)为双光子荧光团和汞离子受体,合成了双光子荧光汞离子探针(DHg),并对其结构进行了分析.实验结果表明,DHg在甲苯、乙腈和水中的荧光量子产率(Φ)分别为0.78,0.42和0.20,对汞离子的络合常数通过单、双光子荧光滴定分别拟合为lg K=5.47±0.02和lg K=5.34±0.02.DHg在水溶液中对汞离子具有优良的选择性和高的灵敏性,可用于中性环境中汞离子的检测.DHg的双光子吸收截面(δTPA)在水溶液中高达840 GM,可用于细胞中汞离子的检测与成像.
[Abstract]:The two-photon fluorescence mercury ion probe (DHgN) was synthesized by using dicyanodiphenyl ethylenes (DCS) and bis (2-ch2-hydroxyethyl thioethyl) ethyl] ammonia (HSA) as two-photon fluorescence groups and mercury ion receptors, respectively, and their structures were analyzed. The experimental results show that the fluorescence quantum yields (桅) of DHg in toluene, acetonitrile and water are 0.788 and 0.20, respectively. The results of two-photon fluorescence titration were as follows: LG K _ 2O 5.47 卤0.02 and LG K _ 2O 5.34 卤0.02.DHg had excellent selectivity and high sensitivity to mercury ions in aqueous solution. The two-photon absorption cross section (未 TPAs) of DHg can be used to detect mercury ions in neutral environment up to 840 GMin aqueous solution, which can be used for the detection and imaging of mercury ions in cells.
【作者单位】：遵义师范学院化学化工学院;韶关大学农业科学与工程学院;
【基金】：贵州省高层次创新型人才培养计划项目——“百”层次人才(批准号:黔科合平台人才[2016]5683) 国家自然科学基金(批准号:21562050) 贵州省第八批科技创新人才团队建设专项基金[批准号:黔科合人才团队(2015)4007] 贵州省科学技术基金项目(批准号:黔科合J字[2015]2146) 贵州省教育厅自然科学重点研究项目(批准号:黔教合KY字[2014]296);贵州省教育厅省级本科教学工程建设项目(批准号:黔教[2014]JXGChcb) 遵义市“15851人才精英工程”项目[批准号:(2015)4007] 遵义市红花岗区科学技术项目(批准号:遵红科合社字[2015]18)资助~~
【分类号】：O657.3

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