title: Pyridinium-based symmetrical diamides as chemosensors in visual sensing of citrate through indicator displacement assay (IDA) and gel formation.
abstract: The design and synthesis of pyridinium-based symmetrical diamides 1 and 2 along with their anion binding studies through 'indicator-diplacement assay' are reported. Both the chemosensors effectively respond in in CH(3)CN-H(2)O (4 : 1 v/v) at pH = 6.3 for the selective naked-eye detection of citrate. Additionally, chemosensor 2 (c = 6.29 × 10(-3) M) forms a stable gel only with citrate in CH(3)CN, which validates its visual sensing.
authors.affiliation: Department of Chemistry, University of Kalyani, Kalyani, 741235, India. ghosh_k2003@yahoo.co.in
authors.forename: Kumaresh
authors.initials: K
authors.lastname: Ghosh
authors.forename: Avik
authors.initials: A
authors.lastname: Ranjan Sarkar
mesh_terms: D019343:Citric Acid / Q000032:analysis*; D003958:Diamide / Q000138:chemical synthesis / Q000737:chemistry*; D005456:Fluorescent Dyes / Q000138:chemical synthesis / Q000737:chemistry*; D005782:Gels / Q000138:chemical synthesis* / Q000737:chemistry; D015394:Molecular Structure; D011726:Pyridinium Compounds / Q000737:chemistry*; D013050:Spectrometry, Fluorescence; D013237:Stereoisomerism
chemical_list: D005456:Fluorescent Dyes; D005782:Gels; D011726:Pyridinium Compounds; D003958:Diamide; D019343:Citric Acid