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A pyrylium salt-based fluorescent probe for the highly sensitive detection of methylamine vapour

文献类型： 外文期刊

作者： Yin, Wenzhu 1 ; Wang, Hongjin 3 ; Deng, Bihua 1 ; Ma, Fang 1 ; Zhang, Jinqiu 1 ; Zhou, Mingxu 1 ; Wang, Haiyang 1 ; Lu, Yu 1 ;

作者机构： 1.Jiangsu Acad Agr Sci, Natl Res Ctr Engn & Technol Vet Biolog, Inst Vet Immunol & Engn,Minist Sci & Technol, Jiangsu Key Lab Food Qual & Safety,State Key Lab, Nanjing 210014, Peoples R China

2.Jiangsu Coinnovat Ctr Prevent & Control Important, Yangzhou 225009, Jiangsu, Peoples R China

3.YiLi Normal Univ, Coll Chem & Environm Sci, Yining 835000, Peoples R China

期刊名称：ANALYST （ 2021影响因子：5.227； 五年影响因子：4.793 ）

ISSN： 0003-2654

年卷期： 2022 年 147 卷 15 期

页码：

收录情况： SCI

摘要： The amine vapour produced by microorganisms is an important indicator of food spoilage. Amines are also ubiquitous in the chemical industry. The development of molecule-based ion sensors has been a pivotal issue that is currently receiving considerable attention. In this work, a new pyrylium salt-based fluorescent probe MTPY has been developed as a rapid, highly sensitive, and selective sensor for methylamine vapour. MTPY exhibits an obvious fluorescence response from yellow to cyan towards CH3NH2 vapour. The calibration curve of titration analysis shows a linear relationship of the fluorescence intensity at 514 nm versus the methylamine concentration in the range of 0.1-2 ppm. In addition to the linearity (R-2 = 0.974) and short response time with a low detection limit (2.6 ppt, 8.4 x 10(-8) M), the sensing mechanism was traced using mass spectrometry.

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