Abstract
Determination of methionine (Met) has garnered increasing attention in various fields because methionine is a biomarker for various diseases. However, chemosensors for Met are very limited compared to those for other amino acids, and many Met chemosensors show low selectivity towards Met over cysteine (Cys) and histidine (His). In this study, a di–thioether amide–Pd2+ complex, 1-Pd2+, based on a 7-diethylaminocoumarin scaffold, was prepared as a sensitive and selective fluorescent chemosensor for Met. The limit of detection (LOD) for Met of 1-Pd2+ was determined to be 1.0 μM and the chemosensor exhibited a high selectivity towards Met over various amino acids including Cys and His. 1-Pd2+ worked well in a broad pH range of 4.0–8.0 and was applied to determine the concentration of Met in tap water samples. In addition, ligand 1 was demonstrated to be a selective and sensitive fluorescent chemosensor for Pd2+. The LOD for Pd2+ of 1 was determined to be 1.7 μM and it exhibited a high selectivity for Pd2+ over various other metal ions.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
