多离子识别荧光探针的合成及机理

发布时间：2018-06-23 14:41

本文选题：香豆素 + 罗丹明　；参考：《精细化工》2017年10期

【摘要】：以席夫碱官能团为连接臂、香豆素和罗丹明为发色基团,合成了一种荧光探针L,用1HNMR、13CNMR及HRMS对探针的结构进行了表征,并对其识别Ca2+、Cd2+和Al3+的机理进行了考察。结果表明:L在乙醇体系中对Ca2+、Cd2+和Al3+可选择性识别,并且对于其他金属离子具有一定的抗干扰能力。L及配合物[L+金属离子]在pH=7~12内有明显的荧光增强。HRMS和Job's曲线结果表明:L可分别与Ca2+、Cd2+和Al3+形成物质的量比为1∶1、2∶1和2∶1的配合物。
[Abstract]:Using Schiff base functional group as the connecting arm and coumarin and rhodamine as chromogenic group, a fluorescent probe L was synthesized. The structure of the probe was characterized by 1HNMR-13CNMR and HRMS, and the mechanism of recognition of Ca2 + CD2 and Al3 was investigated. The results show that the Ca 2 + CD 2 and Al3 can be selectively recognized by 1% L in ethanol system. For other metal ions, the anti-interference ability. L and the complexes [L metal ions] have obvious fluorescence enhancement. HRMS and Jobs curves in pH = 7 ~ (12). The results show that the ratio of the formed substances to Ca ~ (2 +) ~ (2) CD _ (2) and Al3 is 1: 1: 1: 1, respectively. Complexes of 1: 2: 1 and 2:1.
【作者单位】：海南大学热带多糖资源利用教育部工程研究中心海南省精细化工重点实验室;
【基金】：国家自然科学基金项目(21562018,21261008,21166008) 海南省自然科学基金(20162019)~~
【分类号】：O657.3

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