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- W2169568185 abstract "In this paper, we report the design and synthesis of two pyridyl-substituted tripodal ligands, 3-TPyMNTB (tris(((pyridin-3-ylmethyl)benzimidazol-2-yl)methyl)amine) and 4-TPyMNTB (tris(((pyridin-4-ylmethyl)benzimidazol-2-yl)methyl)amine). Reaction of these two ligands with Eu(III)/Tb(III) picrate salts gives mononuclear complexes [Eu(3-TPyMNTB)(pic)3]·2H2O (1) and [Tb(3-TPyMNTB)(pic)3]·2H2O (2), respectively. While reaction with Eu(III)/Tb(III) nitrate salts leads to cocrystallization of a coordinative motif and an inorganic salt in one single-crystal, namely, [Eu(3-TPyMNTB)(NO3)3]·0.5[Eu(NO3)3(H2O)4]·3CH3CN (3), [Tb(3-TPyMNTB)(NO3)3]·0.5[Tb(NO3)3(H2O)4]·3CH3CN·1.5C2H5OH (4), [Eu(4-TPyMNTB)(NO3)3]·[Eu(NO3)3(H2O)3]·3CH3CN·0.5H2O (5) and [Tb(4-TPyMNTB)(NO3)3]·[Tb(NO3)3(H2O)3]·3CH3CN·0.5H2O (6). In these cocrystals, the organic ligand-coordinated motif [Ln(3(4)-TPyMNTB)(NO3)3] and the nitrate anion-bonded motif [Ln(NO3)3(H2O)n] (Ln = Eu(III) or Tb(III), n = 3 or 4) provide two Eu(III)/Tb(III) centers which coexist in the same crystal lattice. Of most interest, both coordinative and inorganic centers can be excited by the absorption of the organic ligand, that is, the double luminescent centers in the cocrystalline systems can be sensitized by the same antenna source. Therefore, both Dexter and Förster mechanisms are proposed to be involved in the emission process, in which the energy transfer is conducted either through direct bond linkages or through space from unlinked organic antennae." @default.
- W2169568185 created "2016-06-24" @default.
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- W2169568185 date "2012-01-01" @default.
- W2169568185 modified "2023-10-18" @default.
- W2169568185 title "Cocrystallization of coordinative and inorganic lanthanide centers showing dual emission via linked or unlinked antenna" @default.
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- W2169568185 doi "https://doi.org/10.1039/c2ce06605j" @default.
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