Pyrene‐based Schiff Base as Selective Chemosensor for Copper(II) and Sulfide Ions. Issue 23 (20th June 2018)

• Record Type: Journal Article
• Authors: Dalbera, Subrata; Kulovi, Somnath; Dalai, Sudipta
• Is Part Of: ChemistrySelect. Volume 3:Issue 23(2018)
• Page Start: 6561
• Page End: 6569
• Publication Date: 2018-06-20
• Subjects: Chemosensor -- copper(II) ion sensor -- pyrene based Schiff base -- sulfide ion sensor; Chemistry -- Periodicals; 540.5
• DOI: 10.1002/slct.201801205
• Languages: English
• ISSNs: 2365-6549

Abstract

Abstract: 1‐aminopyrene and 2, 4‐dihydroxy benzaldehyde derived pyrene based chemosensor was obtained by single step synthesis. The sensor is highly selective and sensitive towards Cu 2+ and S 2‐ ions. Sensitivity of the sensor towards Cu 2+ was assessed by UV/Visible absorption and emission spectroscopy while the same for the S 2‐ was colorimetrically assessed. Static quenching mechanism for Cu 2+ was established by time‐resolved fluorescence spectroscopy. Stoichiometry of the sensor with Cu 2+ and S 2‐ ions were found to be 2:2 and 1:1 with the corresponding binding constants as 5.65 ×10 5 M ‐1 and 3.08 ×10 4 M ‐1 . The lower limit of detection of Cu 2+ and S 2‐ by1 is 0.503 and 10 μM respectively projecting the sensor as a potential agent for applications in real samples. Abstract : Effect of Cu 2+ and S 2‐ ions on the emission and absorption of a pyrene based chemosensor.