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Highly Efficient and Uncommon Photoluminescence Behavior Combined with Multiple Dielectric Response in Manganese(II) Based Hybrid Phase Transition Compounds
Author(s) -
Wu YaXing,
Wang ChangFeng,
Li HuiHui,
Jiang Fan,
Shi Chao,
Ye HengYun,
Zhang Yi
Publication year - 2020
Publication title -
european journal of inorganic chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.667
H-Index - 136
eISSN - 1099-0682
pISSN - 1434-1948
DOI - 10.1002/ejic.201901263
Subject(s) - photoluminescence , quantum yield , manganese , chemistry , dielectric , ion , yield (engineering) , transition metal , excitation , ultraviolet , photochemistry , optoelectronics , materials science , optics , catalysis , fluorescence , organic chemistry , physics , metallurgy , quantum mechanics
A series of multifunctional photoluminescent materials, [pyrrolidinium] 2 MnBr 4 ( 1 ), [ N ‐methylpyrrolidinium] 2 MnBr 4 ( 2 ), and [ N ‐methylpyrrolidinium]MnBr 3 ( 3 ), were obtained by means of regulating diverse organic cations and different coordination modes of inorganic metal ions. Interestingly, compounds 1 , 2 , and 3 exhibit different dielectric switching and relaxation behavior in the process of structural transformations. Furthermore, compounds 1 , 2 , and 3 possess intriguing photoluminescence properties. When subjected to UV light, tetrahedrally coordinated compound 1 shows extraordinarily strong green light emission with a high quantum yield of 51.41 %. By changing the organic cation, compound 2 exhibits an unusual orange emission under ultraviolet excitation, which is different from that of conventional tetrahedrally coordinated manganese‐based compounds. By the regulation of coordination modes of inorganic metal ions, octahedrally coordinated compound 3 emits bright red light with a high quantum yield of 36.76 %. This finding may open a new approach toward designing multifunctional photoluminescent materials.