Tetrahedral manganese(II) complexes having formulae [MnX2{O = PR(NMe2)(2)}(2)] (X = Br, I; R = NMe2, Ph) were isolated and characterized, and in the case of [MnBr2{O = PPh(NMe2)(2)}(2)] the structure was ascertained by means of single crystal X-ray diffraction. All the complexes showed intense green emission assigned to the Mn(II) T-4(1)((4)G) -> (6)A(1)(S-6) transition upon excitation with UV light, with photoluminescence lifetimes in the range 100-1000 mu s. Bromo-complexes maintain their luminescence features once dispersed in polycaprolactone matrix.
Green-emitting manganese ({II}) complexes with phosphoramide and phenylphosphonic diamide ligands
Francesco Enrichi;
2018-01-01
Abstract
Tetrahedral manganese(II) complexes having formulae [MnX2{O = PR(NMe2)(2)}(2)] (X = Br, I; R = NMe2, Ph) were isolated and characterized, and in the case of [MnBr2{O = PPh(NMe2)(2)}(2)] the structure was ascertained by means of single crystal X-ray diffraction. All the complexes showed intense green emission assigned to the Mn(II) T-4(1)((4)G) -> (6)A(1)(S-6) transition upon excitation with UV light, with photoluminescence lifetimes in the range 100-1000 mu s. Bromo-complexes maintain their luminescence features once dispersed in polycaprolactone matrix.
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