Metal-organic frameworks of lanthanide iminodiacetates and tartrates: Synthesis, structural characterization and luminescence properties—Commemorating the 100th anniversary of the birth of Academician Guangxian Xu

2021

JOURNAL OF RARE EARTHS   影响因子和分区

1002-0721

Two series of lanthanide-containing metal-organic frameworks (Ln-MOFs) of the general formula{[Ln(HIDA)2H2O]ClO4?H2O}n (Ln=La (1), Nd (2), Eu (3), Gd (4), Tb (5), Eu:Tb (6);H2IDA=iminodiacetic acid) and [Ln(TT) (HTT) (H2O)3]n (Ln=Eu (7), Gd (8), Tb (9), Dy (10), and Eu:Tb (11);H2TT=tartaric acid) were synthesized by reacting Ln(ClO4)3 with iminodiacetic acid and L-tartaric acid, respectively. All compounds were structurally characterized by single-crystal X-ray diffraction. Elemental analyses are consistent with the corresponding crystallographically generated formulas. Moreover, the luminescence properties of both the single and mixed-lanthanide complexes were studied. Near infrared, red, and green emissions that are characteristic of Nd(Ⅲ), Eu(Ⅲ), and Tb(Ⅲ) are observed for 2, 3/7, and 5/9, respectively. For the two mixed-lanthanide complex systems 6 and 11, depending on the relative amount of Eu(Ⅲ) and Tb(Ⅲ), the color of emission can be fine-tuned. It is found that a small amount of Eu(Ⅲ) is adequate for the observation of the most intense transition of Eu(Ⅲ). This is believed to be a result of energy transfer from Tb(Ⅲ) to Eu(Ⅲ) within the same complex - a conclusion supported by the signif-icantly shortened lifetime of Tb(Ⅲ) and the accompanying enhanced lifetime of Eu(Ⅲ) in the mixed-lanthanide complex with respect to the corresponding values for the pure Tb(Ⅲ) and Eu(Ⅲ) com-plexes with the same ligand.

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CHEMISTRY

WanFang

zgxtxb-e202105002

1.Department of Chemistry and Biochemistry,University of Arizona,Tucson,AZ 85721,USA
2.Department of Chemistry,Southern University of Science and Technology,Shenzhen 518055,China
3.Department of Chemistry,University of Nevada,Reno,NV 89557,USA
4.Department of Chemistry and Biochemistry,University of Arizona,Tucson,AZ 85721,USA;Department of Chemistry,Southern University of Science and Technology,Shenzhen 518055,China

. Metal-organic frameworks of lanthanide iminodiacetates and tartrates: Synthesis, structural characterization and luminescence properties—Commemorating the 100th anniversary of the birth of Academician Guangxian Xu[J]. JOURNAL OF RARE EARTHS,2021,39(5):487-494.

(2021).Metal-organic frameworks of lanthanide iminodiacetates and tartrates: Synthesis, structural characterization and luminescence properties—Commemorating the 100th anniversary of the birth of Academician Guangxian Xu.JOURNAL OF RARE EARTHS,39(5),487-494.

"Metal-organic frameworks of lanthanide iminodiacetates and tartrates: Synthesis, structural characterization and luminescence properties—Commemorating the 100th anniversary of the birth of Academician Guangxian Xu".JOURNAL OF RARE EARTHS 39.5(2021):487-494.