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首页> 外文期刊>ACS Sustainable Chemistry & Engineering >A Sensitive and Selective Fluorescent Sensor for Berberine Chloride Based on the Supramolecular Self-Assembly of Perylene Diimide in Aqueous Solution
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A Sensitive and Selective Fluorescent Sensor for Berberine Chloride Based on the Supramolecular Self-Assembly of Perylene Diimide in Aqueous Solution

机译：基于水溶液中PerneNe二酰亚胺的超分子自组装的小檗碱氯化物的敏感和选择性荧光传感器

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摘要

Developing a rapid and simple method for the detection of berberine chloride (BBC), one kind of natural antibiotic, is significant to ensure reasonable control and administration of antibiotic residues in food and other feed. In this report, a sensitive and selective fluorescent probe based on a water-soluble perylene diimide derivative (PDI-Asp) has been screened for the detection of berberine chloride (BBC). The sensing performance and mechanism of this probe were systematically investigated by using UV-vis and fluorescence spectroscopic techniques. Meanwhile, the influencing factors of probe structures on the sensing performance were also addressed. It was identified that the formation of supramolecular complex between BBC and PDI-Asp through synergy of electrostatic and pi-pi interactions promoted a rapid and fluorometric assay for BBC in 100% aqueous systems. The detection limit for BBC was found to be as low as 28 nmol/L. Finally, PDI-Asp was a highly promising fluorometric probe for the direct determination of BBC in practical samples. To the best of our knowledge, this is the first report of PDI-based probe for detecting small biomolecules in pure aqueous solution. We believe that this approach will not only extend the sensing scope of PDIs but also contribute to understanding the mechanism of the interaction between BBC and PDIs, and it will provide some useful information for the design of PDI-based probes for other small biomolecules.
机译：开发一种用于检测小檗碱（BBC）的快速和简单的方法，一种天然抗生素，是有意义的，是确保食品和其他饲料中的合理控制和施用抗生素残留物。在本报告中，已经筛选了基于水溶性Perylene二酰亚胺衍生物（PDI-ASP）的敏感和选择性荧光探针用于检测小檗碱（BBC）。通过使用UV-Vis和荧光光谱技术系统地研究了该探针的感测性能和机制。同时，还解决了对传感性能的探针结构的影响因素。鉴定出BBC和PDI-ASP之间的超分子复合物的形成通过静电和PI-PI相互作用的协同作用促进了100％含水体系中BBC的快速和荧光测定。发现BBC的检测限度低至28诺米酚/升。最后，PDI-ASP是一种高度有前途的荧光探针，用于直接测定BBC在实际样品中。据我们所知，这是一种基于PDI的探针的第一个报告，用于检测纯水溶液中的小生物分子。我们认为，这种方法不仅延长了PDI的传感范围，而且还有助于理解BBC和PDI之间的相互作用机制，它将提供一些有用的信息，用于对其他小生物分子的PDI探针设计一些有用的信息。

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