TY - JOUR
T1 - Two Bi-MOFs with pyridylmulticarboxylate ligands showing distinct crystal structures and phosphorescence properties
AU - Guo, Min Chao
AU - Zhong, Wan Di
AU - Wu, Tong
AU - Han, Wen Da
AU - Gao, Xu Sheng
AU - Ren, Xiao Ming
N1 - Publisher Copyright:
© 2022 Elsevier Inc.
PY - 2022/5
Y1 - 2022/5
N2 - Two Bi-MOFs, [Bi(PDC)(OH)] (Bi-PDC; H2PDC = 2,4-pyridine bicarboxylic acid) and [Bi(PTC)(H2O)2] (Bi-PTC; H3PTC = 2,4,6-pyridine tricarboxylic acid), have been synthesized under almost the same solvothermal condition, respectively. Both Bi-PDC and Bi-PTC were characterized by microanalysis, infrared spectra (IR), thermal gravimetric analyses (TGA), and powder X-ray diffraction (PXRD) techniques. Single-crystal structural analyses indicate that the Bi3+ ions adopt similar coordination sphere of monocapped square antiprism in Bi-PDC and Bi-PTC, while PDC2− and PTC3− ligands display distinct bridging modes through carboxylates and pyridyl groups, leading to Bi-PDC forming three-dimensional (3D) pillared-layer framework and Bi-PTC developing into two-dimensional (2D) layered structure. Two Bi-MOFs emit ligand-centered room temperature phosphorescence due to the heavy atom effect of Bi3+ ion, with lifetime and quantum yield of 0.39 ms and 2.49% in Bi-PDC versus 0.57 ms and 5.45% in Bi-PTC, and the intense green and orange phosphorescence is visible by naked eyes under ambient condition, and the long-wavelength (orange) phosphorescence Bi-based MOF is seldom reported.
AB - Two Bi-MOFs, [Bi(PDC)(OH)] (Bi-PDC; H2PDC = 2,4-pyridine bicarboxylic acid) and [Bi(PTC)(H2O)2] (Bi-PTC; H3PTC = 2,4,6-pyridine tricarboxylic acid), have been synthesized under almost the same solvothermal condition, respectively. Both Bi-PDC and Bi-PTC were characterized by microanalysis, infrared spectra (IR), thermal gravimetric analyses (TGA), and powder X-ray diffraction (PXRD) techniques. Single-crystal structural analyses indicate that the Bi3+ ions adopt similar coordination sphere of monocapped square antiprism in Bi-PDC and Bi-PTC, while PDC2− and PTC3− ligands display distinct bridging modes through carboxylates and pyridyl groups, leading to Bi-PDC forming three-dimensional (3D) pillared-layer framework and Bi-PTC developing into two-dimensional (2D) layered structure. Two Bi-MOFs emit ligand-centered room temperature phosphorescence due to the heavy atom effect of Bi3+ ion, with lifetime and quantum yield of 0.39 ms and 2.49% in Bi-PDC versus 0.57 ms and 5.45% in Bi-PTC, and the intense green and orange phosphorescence is visible by naked eyes under ambient condition, and the long-wavelength (orange) phosphorescence Bi-based MOF is seldom reported.
KW - Bi-MOFs
KW - Heavy atom effect
KW - Room temperature phosphorescence
UR - http://www.scopus.com/inward/record.url?scp=85125488218&partnerID=8YFLogxK
U2 - 10.1016/j.jssc.2022.123005
DO - 10.1016/j.jssc.2022.123005
M3 - 文章
AN - SCOPUS:85125488218
SN - 0022-4596
VL - 309
JO - Journal of Solid State Chemistry
JF - Journal of Solid State Chemistry
M1 - 123005
ER -