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Tunable Emission Properties of Manganese Chloride Small Single Crystals by Pyridine Incorporation.


ABSTRACT: Pure transition-metal compounds seldom produce luminescence because of electron correlation and spin-spin coupling. The Pb-free perovskite materials, C10H12N2MnCl4 and C5H6NMnCl3·H2O, were obtained by using pyridine-implanted manganese chloride lattices. The single-crystal X-ray diffraction indicates their different crystal structures. In C10H12N2MnCl4, MnCl4 cocoordinated with two pyridine molecules forms a lattice composed of independent mononuclear structures with paramagnetic behavior, which shows a clear emission band at 518 nm from the lowest d-d transition of a single Mn(II) ion in the octahedral crystal field. In C5H6NMnCl5·H2O crystal, MnCl5·(H2O) x octahedron-cocoordinated with less pyridine molecules than 2 lead to formation arris-share linear chains of Mn-ion octahedra, which give emission band at 620 nm due to the ferromagnetic Mn pair, and ferromagnetism. Pyridine incorporations in the transition-metal halide lattice provide a new channel to modulate the electron correlation and obtain materials with both luminescence and ferromagnetic properties.

SUBMITTER: Li C 

PROVIDER: S-EPMC6648605 | biostudies-literature | 2019 May

REPOSITORIES: biostudies-literature

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Tunable Emission Properties of Manganese Chloride Small Single Crystals by Pyridine Incorporation.

Li Chunyang C   Bai Xianwei X   Guo Yongchang Y   Zou Bingsuo B  

ACS omega 20190502 5


Pure transition-metal compounds seldom produce luminescence because of electron correlation and spin-spin coupling. The Pb-free perovskite materials, C<sub>10</sub>H<sub>12</sub>N<sub>2</sub>MnCl<sub>4</sub> and C<sub>5</sub>H<sub>6</sub>NMnCl<sub>3</sub>·H<sub>2</sub>O, were obtained by using pyridine-implanted manganese chloride lattices. The single-crystal X-ray diffraction indicates their different crystal structures. In C<sub>10</sub>H<sub>12</sub>N<sub>2</sub>MnCl<sub>4</sub>, MnCl<sub>4</  ...[more]

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