基于苯并吲哚的荧光探针对Al3+的识别及应用

doi:10.11944/j.issn.1000-0518.2019.01.190180

摘要/Abstract

摘要：

设计合成了一种结构简单且基于苯并吲哚衍生物的荧光探针(H),通过紫外-可见吸收光谱(UV-Vis)和荧光发射光谱研究了荧光探针H对金属阳离子的识别性能。结果表明,在乙醇(EtOH)和4-羟乙基哌嗪乙磺酸(HEPES)缓冲液(pH=7.4) (体积比为1:1)的混合溶液体系中,荧光探针H对Al³⁺有专一性识别且不受其它金属阳离子干扰。探针H与Al³⁺的配合比为1:1,配合常数K_a为0.52×10² mol/L,检测限为1.75 μmol/L。探针通过荧光发射光谱对水样及食品中的Al³⁺进行了定量检测,具有一定实际应用价值。

关键词: 荧光探针, 水样, 苯并吲哚, Al³⁺

Abstract:

A simple fluorescence probe based on benzoindole (H) was designed and synthesized. The recognition performance of the probe for metal cations was studied by ultraviolet-visible absorption spectrophotometry (UV-Vis) and fluorescence emission spectra. The results show that probe H in the mixed system of ethanol (EtOH) and 4-(2-hydroxyethyl)piperazine-1-ethanesulfonic acid(HEPES)(pH=7.4)(volume ratio 1:1) has specific recognition of Al³⁺ and is not impacted by other metal cations. The complex ratio of probe H and Al³⁺ is 1:1, the association constant K_a is 0.52×10² mol/L and the detection limit is 1.75 μmol/L. The quantitative detection of Al³⁺ in water and food samples proves that the probe has potential applications.

Key words: fluorescence probe, water sample, benzoindole, Al³⁺

张莹莹, 王丽艳, 赵冰, 宋波. 基于苯并吲哚的荧光探针对Al³⁺的识别及应用[J]. 应用化学, 2020, 37(1): 88-95.

ZHANG Yingying, WANG Liyan, ZHAO Bing, SONG Bo. A Benzoindole-Based Probe for Recognition of Al³⁺ and Its Application[J]. Chinese Journal of Applied Chemistry, 2020, 37(1): 88-95.

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基于苯并吲哚的荧光探针对Al³⁺的识别及应用

A Benzoindole-Based Probe for Recognition of Al³⁺ and Its Application

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