Bio-inspired fluorescence probe for ultra level detection of aliphatic amines

荧光 化学 检出限 胺气处理 乙二胺 部分 分析物 光化学 有机化学 色谱法 量子力学 物理
作者
Atanu Panda,S. Venkateswarlu,Seshadri Reddy Ankireddy,Minyoung Yoon
出处
期刊:Dyes and Pigments [Elsevier BV]
卷期号:156: 199-205 被引量:10
标识
DOI:10.1016/j.dyepig.2018.03.040
摘要

The detection of trace amounts of amines is essential to mitigate toxicity and health risks. Various chemical probes have been reported for the detection of amines, which are expensive, difficult to handle, and toxic. In this study, we have developed a bio-inspired fluorescent probe for ultra-level detection of amines in liquid solution. Diatoms, which are silicified algae were used strategically for the detection of aliphatic amines. The presence of an electron-deficient moiety in diatoms improves the ability of diatoms to detect electron-rich organic amines. When an organic amine binds to the pyrolyzed diatom, enhanced photoluminescence and a color change under UV irradiation were observed. Interestingly, fluorescence analysis revealed that the diatoms can selectively detect aliphatic amines with sensitivity up to the pM level, even in the presence of other volatile organic compounds. Among the given analytes, only the electron-rich aliphatic amines significantly enhanced the fluorescence intensity. In contrast, aromatic amines and other organic solvents did not exhibit a fluorescence signal for detection. In particular, ethylenediamine (EDA) contributes the most apparent enhancement effect, with a detection limit of 116 pM. Therefore, diatoms were proved it potential as a tool for monitoring toxic organic molecules.

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