A pyrylium salt-based fluorescent probe for the highly sensitive detection of methylamine vapour. Issue 15 (29th June 2022)

• Record Type: Journal Article
• Authors: Yin, Wenzhu; Wang, Hongjin; Deng, Bihua; Ma, Fang; Zhang, Jinqiu; Zhou, Mingxu; Wang, Haiyang; Lu, Yu
• Is Part Of: Analyst. Volume 147:Issue 15(2022)
• Page Start: 3451
• Page End: 3455
• Publication Date: 2022-06-29
• Subjects: Chemistry, Analytic -- Periodicals; 543
• DOI: 10.1039/d2an00911k
• Languages: English
• ISSNs: 0003-2654

Abstract

Abstract : The MTPY exhibits an obvious fluorescence response from yellow to cyan when reacted with CH3 NH2 with a low detection limit (2.6 ppt, 8.4 × 10 −8 M). The sensing mechanism was traced by mass spectrometry. Abstract : 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 CH3 NH2 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 × 10 −8 M), the sensing mechanism was traced using mass spectrometry.