Insights in the determination of saxitoxin with fluorogenic crown ethers in water.

IF 1.7 4区 化学 Q3 CHEMISTRY, MULTIDISCIPLINARY
Monatshefte Fur Chemie Pub Date : 2018-01-01 Epub Date: 2018-01-11 DOI:10.1007/s00706-017-2074-x
Bernhard J Müller, Günter Mistlberger, Ingo Klimant
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引用次数: 0

Abstract

Abstract: In this contribution, we present new insights and a critical discussion in the optical detection of saxitoxin using fluorophores with crown ethers. Fluorescence enhancement is caused by the reduction of photoinduced electron transfer upon complexation with the analyte. Our attempts to improve this detection method neither did yield a functioning sensor nor were the attempts to reproduce published data in this area successful. Due to the fact that only low concentrations of saxitoxin are available, multiple surrogates were investigated at high concentrations. However, no turn on response was observed. Moreover, a fluorescent decomposition product of saxitoxin that forms under UV light was discovered which was in our opinion misinterpreted as a sensor response by previous publications.

Graphical abstract:

Abstract Image

Abstract Image

Abstract Image

用含氟冠醚测定水中沙司毒素的启示。
摘要:在这篇论文中,我们介绍了使用冠醚荧光团对沙司毒素进行光学检测的新见解和重要讨论。荧光增强是由于与分析物络合时光诱导电子转移的减少造成的。我们试图改进这种检测方法,但既没有获得正常工作的传感器,也没有成功地再现这方面已发表的数据。由于只能获得低浓度的沙西毒素,我们对高浓度的多种替代物进行了研究。但是,没有观察到开启反应。此外,我们还发现了一种在紫外线照射下形成的沙西毒素荧光分解产物,我们认为以前的出版物将其误解为传感器反应:
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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来源期刊
Monatshefte Fur Chemie
Monatshefte Fur Chemie 化学-化学综合
CiteScore
3.70
自引率
5.60%
发文量
116
审稿时长
3.3 months
期刊介绍: "Monatshefte für Chemie/Chemical Monthly" was originally conceived as an Austrian journal of chemistry. It has evolved into an international journal covering all branches of chemistry. Featuring the most recent advances in research in analytical chemistry, biochemistry, inorganic, medicinal, organic, physical, structural, and theoretical chemistry, Chemical Monthly publishes refereed original papers and a section entitled "Short Communications". Reviews, symposia in print, and issues devoted to special fields will also be considered.
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