M(H₂O)(PO₃C₁₀H₆OH)·(H₂O)_0.5 (M = Co, Mn, Zn, Cu): a new series of layered metallophosphonate compounds obtained from 6-hydroxy-2-naphthylphosphonic acid

Abstract

Layered metallophosphonates featuring phenol functions were obtained as single crystal and polycrystalline powders. Thermal stability, magnetic and luminescence properties are reported.

A new series of magnetic and luminescent layered hybrid materials obtained from thianthrene phosphonic acid: M(H2O)PO3-S2C12H7 (M = Cu, Zn) and M(H2O)2(PO2OH-S2C12H7)2 (M = Mn, Co)

“…The Cu(H 2 O)(PO 3 S 2 C 12 H 7 ) ( 5 ) compound exhibits three emission peaks at 3.97 eV (312 nm) (LI), 2.95 eV (420 nm) (LIII), and 2.39 eV (518 nm) (LIV), 1.97 eV (627 nm) (LV) which are characterized by a weak peak (LI), followed by two equally intense (LIII), (LIV), and (LV). Despite the Cu 2+ element being known as an emission quencher in studies, 63,64 the two most intense peaks can be attributed to the same transition observed in the ligand ( 3 ). The Co(H 2 O) 2 (PO 2 OH-S 2 C 12 H 7 ) 2 ( 6 ) compound presents several emission peaks at 3.61 eV (343 nm) (LI), 3.40 eV (364 nm) (LII), 2.98 eV (415 nm) (LIII), 2.43 eV (510 nm) (LIV) and, 2.0 eV (610 nm) (LV).…”

“…Paper peaks at 3.97 eV (312 nm) (LI), 2.95 eV (420 nm) (LIII), and 2.39 eV (518 nm) (LIV), 1.97 eV (627 nm) (LV) which are characterized by a weak peak (LI), followed by two equally intense (LIII), (LIV), and (LV). Despite the Cu 2+ element being known as an emission quencher in studies, 63,64 ). The spectral similarity between the ligand and hybrid compounds suggests a shared origin for these two peaks.…”

Thickness and Humidity on Proton Conductivity in MOF-508 Thin Film by Twin-Zinc-Source Method

“…In recent decades, coordination polymers (CPs) or metal-organic frameworks (MOFs) have received extensive attention in research because they are tunable solids modulated by a limitless number of combinations of metal ions and organic ligands and have unique properties such as high porosity with a large surface area [4,5]. In addition, the proton conductivity of MOFs has received increasing attention from researchers [6,7] due to the presence of metal centers, organic linkers, and pore spaces. There have been several achievements in MOF materials with high proton conductivity by systematic design modifications, such as the introduction of NH 4 + , H 3 O + , and HSO 4 − into the pores of the framework [8].…”