两种新型噻唑取代水杨醛Al - 3+荧光探针及其应用

IF 2.1 4区化学 Q3 CHEMISTRY, MULTIDISCIPLINARY

Supramolecular Chemistry Pub Date : 2023-10-23 DOI:10.1080/10610278.2023.2270600

Xiaohua Cai, Benyue Yao, Jianhui Zhang, Le Liang, Mei Han, Xiaohong Li, Yanli Leng

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引用次数: 0

摘要

摘要本研究合成了两个结构相似的与Al3+具有高结合能的“开启”荧光探针B1和B2。在新噻唑取代水杨醛荧光团的情况下，基于测试条件下的螯合荧光增强作用，这两种宿主对Al3+的检测也具有良好的选择性和灵敏度。它们的检出限极低，分别为0.478 nM和4.04 nM，结合常数分别为2.34 × 106 M−1和1.36 × 106 M−1。工作曲线和质谱分析表明，双探针与Al3+的结合比为1:1。1H NMR和DFT计算证实了这两种化合物与Al3+结合的机理，确定了这两种化合物与Al3+结合的两个氧原子(一个在C=O中，一个在-OH中)和一个在- nhh中的氮原子形成三重配位结构。进一步在试纸、实际土壤和中药中的应用表明，B1和B2探针在检测Al3+方面具有良好的应用前景。本文得到国家自然科学基金项目(51863004)和贵州省科技厅自然科学基金项目(JZ[2018]1077)资助。披露声明作者未报告潜在的利益冲突。补充材料本文的补充数据可在https://doi.org/10.1080/10610278.2023.2270600上在线获取。

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Two novel Al ³⁺ fluorescent-on probes based on thiazole substituted salicylaldehyde and its applications

ABSTRACTIn this study, two structurally similar ‘turn on’ fluorescent probes B1 and B2 with high binding energy with Al3+ were synthesised. With new thiazole substituted salicylaldehyde fluorophore, these two hosts also have good selectivity and sensitivity in the detection of Al3+ based on the chelating fluorescence-enhancing effect under test conditions. They show an extremely low detection limit, 0.478 nM and 4.04 nM, respectively, with binding constants of 2.34 × 106 M−1 and 1.36 × 106 M−1. A 1:1 binding ratio of dual probes to Al3+ was demonstrated by working curves and mass spectrometry. The mechanisms were confirmed by 1H NMR and DFT calculations, defined that both two compounds combined with Al3+ by two oxygen atoms (one in C=O and another in -OH) and one nitrogen atom in -NH group to form triple coordination structure. Further application in test strips, actual soil and traditional Chinese medicine (TCM) suggest probes B1 and B2 have well application prospects in detecting Al3+.KEYWORDS: Al3+ detectionfluorescent probeSchiff baseCHEF mechanism AcknowledgmentsThis work is supported by the National Natural Science Foundation of China (51863004) and the Natural Science Foundation of the Guizhou Science and Technology Department (JZ [2018]1077).Disclosure statementNo potential conflict of interest was reported by the author(s).Supplementary materialSupplemental data for this article can be accessed online at https://doi.org/10.1080/10610278.2023.2270600.

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来源期刊

Supramolecular Chemistry 化学-化学综合

CiteScore

3.60

自引率

3.00%

发文量

审稿时长

2.7 months

期刊介绍： Supramolecular Chemistry welcomes manuscripts from the fields and sub-disciplines related to supramolecular chemistry and non-covalent interactions. From host-guest chemistry, self-assembly and systems chemistry, through materials chemistry and biochemical systems, we interpret supramolecular chemistry in the broadest possible sense. Interdisciplinary manuscripts are particularly encouraged. Manuscript types include: high priority communications; full papers; reviews, and; Methods papers, techniques tutorials highlighting procedures and technologies that are important to the field. We aim to publish papers in a timely fashion and as soon as a paper has been accepted and typeset it will be published in electronic form on the Latest articles section of the website. The two most important review criteria are that the paper presents high-quality work that fits generally into the broad spectrum of activities in the supramolecular chemistry field. Under normal circumstances, Supramolecular Chemistry does not consider manuscripts that would be more suitable in a highly specialized journal. This includes, but is not limited to, those based mostly or exclusively on topics such as solid state/X-ray structures, computational chemistry, or electrochemistry. . The two most important review criteria are that the paper presents high-quality work that fits generally into the broad spectrum of activities in the supramolecular chemistry field.