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Photoluminescence of pefloxacindi-ium manganese(II) and zinc(II) tetrahalides by Nicolay N. Golovnev; Marina A. Gerasimova; Maxim S. Molokeev; Mikhail E. Plyaskin; Mikhail E. Baronin is a Chemistry article available to read on EtoBox.
What is Photoluminescence of pefloxacindi-ium manganese(II) and zinc(II) tetrahalides about?
a b s t r a c t Mn 2 + -based hybrid materials have become the hotspot of current research studies owing to their high photoluminescence quantum yield (PLQY), low-cost, environmental friendliness and stability. For the first time, we report the hydrothermal synthesis of two lead-free zero-dimensional luminescent organicinorganic hybrid compounds, PefH 2 [MnBr 4 ] ( 1 ) and PefH 2 [MnCl 4 ] ( 2 ) (Pef = pefloxacin). They were characterized by elemental analysis, TG-DSC, single-crystal and powder XRD. Compounds 1 -2 exhibit a distorted tetrahedral geometry around the manganese(II) metal center, which is isolated from the same centers by bulky pefloxacindi-ium (PefH 2 2 + ) ions with a Mn •••Mn distance of 7.3 Å. Their structures are Thermal decomposition starts at T > 230 °С for 1 and T > 210 °С for 2 and proceeds for several stages. Upon UV excitation compounds exhibit a bright green emission with a moderate PLQY of 45% for 1 and 30% for 2 . The influence of the halide ion and metal ion on the photoluminescence properties of isostructural compounds PefH 2 [MX 4 ] (M = Mn, Zn and X = Br, Cl) is discussed.
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It is typically read by researchers, students, and practitioners in Chemistry.
- Author
- Nicolay N. Golovnev; Marina A. Gerasimova; Maxim S. Molokeev; Mikhail E. Plyaskin; Mikhail E. Baronin
- Publisher
- Elsevier BV
- Published
- 2022
- Language
- EN
- Field
- Chemistry (Physical Sciences)