title: Detection of HSO₄⁻ ion based on the hydrolysis of diketopyrrolopyrrole-derived Schiff base with chromogenic and fluorogenic dual signals.
abstract: A new diketopyrrolopyrrole-based Schiff base L was synthesized and its anion sensing behavior was explored. L showed exclusive response toward HSO4(-) ion and also distinguished HSO4(-) from other anions by color changes (from dark red to orange) and 21 fold fluorescence enhancement at 370 nm in aqueous solution (THF/H2O = 8/1, v/v). The sensing mechanism was suggested to proceed via a hydrolysis process. The results provided colorimetric and fluorimetric assays to selectively detect the presence of a HSO4(-) over a wide range of other interfering anions. The results could potentially be used as a dual colorimetric-fluorescent probe for monitoring HSO4(-) levels in physiological and environmental systems.
authors.affiliation: School of Chemistry and Chemical Engineering, South China University of Technology, Guangzhou, China, 510640, lingyun@scut.edu.cn.
authors.forename: Lingyun
authors.initials: L
authors.lastname: Wang
authors.forename: Lingling
authors.initials: L
authors.lastname: Yang
authors.forename: Derong
authors.initials: D
authors.lastname: Cao
mesh_terms: D003124:Colorimetry; D005470:Fluorometry; D006868:Hydrolysis; D007477:Ions / Q000032:analysis; D015394:Molecular Structure; D011758:Pyrroles / Q000138:chemical synthesis / Q000737:chemistry*; D012545:Schiff Bases / Q000138:chemical synthesis / Q000737:chemistry; D013456:Sulfur Acids / Q000032:analysis*
chemical_list: D007477:Ions; D011758:Pyrroles; D012545:Schiff Bases; D013456:Sulfur Acids