title: Tri-color emission and colorimetric recognition of acetate using semicarbazide and thio-semicarbazide derivatives: Experimental and computational studies.
abstract: Two new fluorescence probes having semicarbazide (DSC) and thio-semicarbazide (DTSC) units have been derived upon reaction with 2-hydroxy-5-methylbenzene-1,3-dialdehyde. Both the probes show excellent selectivity for acetate ion in DMSO medium whereby DTSC generates tricolor emission. The association constants of DSC and DTSC for acetate are 6.6×10(4)M(-1) and 2×10(3)M(-1) respectively with corresponding detection limits, 1.06×10(-7)M and 2.5×10(-6)M. Density functional theoretical (DFT) studies nicely demonstrate the interaction between the DTSC and acetate ion.
authors.affiliation: Department of Chemistry, The University of Burdwan, Burdwan, West Bengal, India.
authors.forename: Sisir
authors.initials: S
authors.lastname: Lohar
authors.affiliation: Department of Chemistry, Indian Institute Technology, Mandi, Himachal Pradesh, India.
authors.forename: Sougata
authors.initials: S
authors.lastname: Sinha
authors.affiliation: Department of Chemistry, Indian Institute Technology, Mandi, Himachal Pradesh, India.
authors.forename: Subrata
authors.initials: S
authors.lastname: Ghosh
authors.affiliation: Department of Chemistry, The University of Burdwan, Burdwan, West Bengal, India. Electronic address: ddas100in@yahoo.com.
authors.forename: Debasis
authors.initials: D
authors.lastname: Das
keywords: Acetate; Colorimetric recognition; Computational studies; Semicarbazide and thio-semicarbazide derivatives; Tri-color emission