Mechanochemical and Conventional Synthesis of Zn(II)/Cd(II) Luminescent Coordination Polymers: Dual Sensing Probe for Selective Detection of Chromate Anions and TNP in Aqueous Phase

摘要: Isostructural Zn(II)/Cd(II) mixed ligand coordination polymers (CPs) {[M(IPA)(L)]}n (CP1 and CP2) built from isophthalic acid (H2IPA) 3-pyridylcarboxaldehyde nicotinoylhydrazone (L) were prepared using versatile synthetic routes: viz., diffusion of precursor solutions, conventional reflux methods, green mechanochemical (grinding) reactions. Both robust CPs synthesized by different routes characterized various analytical their thermal chemical stability as well the phase purity was established. Crystallographic studies revealed that CP1 CP2 are isostructural frameworks feature a double-lined two-dimensional network composed Zn2+/Cd2+ nodes connected through IPA pillared Schiff base L with double-walled edge. The photoluminescent (PL) properties have been exploited dual detection fluorosensors for hexavalent chromate anions (CrO42–/Cr2O72–) 2,4,6-trinitrophenol (TNP) because it observed emission intensity o...