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• W2890733269 abstract "Abstract Lanthanide ions (Dy III , Eu III ) are stabilized by coordination with two Schiff base ligands in compounds [Dy{H 3 L} 2 ](NO 3 )(EtOH)(H 2 O) 8 ( 1 ) and [Eu{H 3 L} 2 ](NO 3 )(H 2 O) 8 ( 3 ) (H 4 L, 2,2′‐{[(2‐aminoethyl)imino]bis[2,1‐ethanediyl‐nitriloethylidyne]}bis‐2‐hydroxy‐benzoic acid). The latter is reported here for the first time. Both luminescence and ultrafast photodynamics after photoexcitation via a ligand absorption band (∼400 nm) have been studied. In solution, only the [Eu{H 3 L} 2 ] + ( [3] + ) complex displays the typical lanthanide emission lines, whereas in gas phase both, [Dy{H 3 L} 2 ] + ( [1] + ) and [3] + , show their corresponding transitions depending on excitation energy. The ultrafast excited state dynamics, obtained in gas phase and in solution, are assigned to excited state intramolecular proton transfer processes in the ligands. The antenna ligand moiety of these complexes provides pockets for stabilization of two Mn II ions so that we additionally investigated the photophysical behavior of the corresponding tri‐nuclear (NHEt 3 ) 2 [Ln{MnL} 2 ](ClO 4 )(H 2 O) 2 (Ln=Dy III , Eu III ) compounds ( 2 , 4 ). Interestingly, the related complexes do not show lanthanide emission, neither in solution nor in gas phase. Transient data in solution and gas phase suggests an efficient quenching of the ligand's electronically excited state by strong interaction with the Mn II ions. This effect could possibly be developed further into a design principle for luminescence‐based sensing devices for metal cations." @default.
• W2890733269 created "2018-09-27" @default.
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• W2890733269 date "2018-10-08" @default.
• W2890733269 modified "2023-10-14" @default.
• W2890733269 title "Photodynamics and Luminescence of Mono- and Tri-Nuclear Lanthanide Complexes in the Gas Phase and in Solution" @default.
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• W2890733269 doi "https://doi.org/10.1002/cphc.201800599" @default.
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