期刊
INORGANIC CHEMISTRY
卷 61, 期 24, 页码 9283-9294出版社
AMER CHEMICAL SOC
DOI: 10.1021/acs.inorgchem.2c01031
关键词
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资金
- National Natural Science Foundation of China [21371156, 21871274]
- Key Scientific Research Project of Higher Education Institutions in Henan Province [20A150043]
- Science and Technology Research Project in Henan Province [212102311162]
- Zhongyuan Science and Technology Innovation Leading Talents [214200510017]
In this study, a series of chiral coordination compounds were obtained by reacting different compounds and ligands, and it was found that they exhibit different magnetic and optical properties. One of the coordination compounds showed a significant magnetic effect, while the other exhibited strong nonlinear optical responses. Moreover, this study provides an efficient strategy for achieving the function regulation and switch in multifunctional coordination compounds.
Using Dy(dbm)3(H2O) and Dy(btfa)3(H2O)2 to react with enantiopure N-donors, (-)/(+)-4,5-pinenepyridyl-2enantiomers, Dy(dbm)3LR/Dy(dbm)3LS (R-1-Dy/S-1-Dy) and Dy(btfa)3LR/Dy(btfa)3LS (R-2-Dy/S-2-Dy) were obtained, wherein one of the benzene rings of dbm- (dibenzoylmethanate) in R-1Dy/S-1-Dy is displaced by the -CF3 group of btfa- (4,4,4trifluoro-1-phenyl-1,3-butanedionate) in R-2-Dy/S-2-Dy. Interestingly, this substitution results not only in giant differences in their single-ion magnetic (SIM) performances but also in their completely different nonlinear optical (NLO) responses. R-1-Dy presents a large effective energy barrier (Ueff = 265.47 K) under zero applied field, being more than 4 x R-2-Dy (61.40 K). The discrepancy on their magnetic performances has been further elucidated by ab initio calculations. Meanwhile, R-1-Dy/S-1-Dy display the strongest third-harmonic generation responses (35/33 x alpha-SiO2) among the known lanthanide NLO-active coordination compounds (CCs). On the contrary, R-2-Dy/S-2-Dy exhibit moderate second-harmonic generation responses (0.65/0.70 x KDP). These results not only give the first example of the CCs with both SMM/SIM behavior and a THG response but also provide an efficient strategy for achieving the function regulation and switch in multifunctional CCs.
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