A 3D Cd(II) MOF of tetracarboxylate and tris(benzimidazole) ligands: Luminescence sensing properties

Two Water-Stable Zn(II) Coordination Polymers as Luminescent Sensors for Detection of Uric Acid in Serum, MnO4–, and Cr(VI) Oxo-Anions in Tap Water

“…The solid-state UV–vis absorption spectra of free 1,5-NDS, Mbimb, bbimb ligands, and two CPs were obtained (Figure S2). The maximum absorption peak of the 1,5-NDS, Mbimb, and bbimb ligands can be seen at 320, 298, and 292 nm, which should be attributed to the π → π* transitions of aromatic rings in the ligands . Two CPs exhibit similar absorption peaks at 303 and 295 nm as the ligands, which can be attributed to the π → π* transitions of the ligands in their structures.…”

“…The maximum absorption peak of the 1,5-NDS, Mbimb, and bbimb ligands can be seen at 320, 298, and 292 nm, which should be attributed to the π → π* transitions of aromatic rings in the ligands. 36 Two CPs exhibit similar absorption peaks at 303 and 295 nm as the ligands, which can be attributed to the π → π* transitions of the ligands in their structures. The corresponding band gaps of 1 and 2 were calculated to be 3.30 and 3.51 eV, respectively, according to the E g calculation formula (Ahv) 1/2 = B(hv − E g ).…”