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Abstract:
Chiral metal-organic frameworks (MOFs) have been studied extensively because of the potential application. Based on the complexity of chiral structure, it is a great challenge to study the formation of novel chiral centers under self-assembly conditions. By mixing chiral and achiral ligands, five unusual homochiral BIFs materials were synthesized by using D-camphoric acid (D-H2cam) and KBH(mim)3 (mim = 2-methylimidazole) under solvothermal condition. The orientations of mim rings had been locked to a specific angle in these structures and freed tridentate BH(mim)3- ligands were separated into two enantiomers, S–BH(mim)3- and R–BH(mim)3-. BIF-123 and BIF-124 exhibited similar (3, 4)-connected pillared-layer chiral structures with a pair of opposite helical substructures. BIF-125, 126 and 127 exhibited a 4-connected chiral diamond structure, which incorporates the homochiral helical substructures containing only S–BH(mim)3- ligand. These homochiral BIFs showed high pore volume in gas adsorption measurements and good stability under different solvent environments. Furthermore, the obvious CD signals of BIF-126 proved the chirality of bulk samples. © 2023 Elsevier Inc.
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Journal of Solid State Chemistry
ISSN: 0022-4596
Year: 2023
Volume: 326
3 . 2
JCR@2023
3 . 2 0 0
JCR@2023
ESI HC Threshold:39
JCR Journal Grade:2
CAS Journal Grade:3
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ESI Highly Cited Papers on the List: 0 Unfold All
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30 Days PV: 1
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