Electron Crystallography Reveals Atomic Structures
of Metal–Organic Nanoplates with M12(μ3‑O)8(μ3‑OH)8(μ2‑OH)6 (M = Zr, Hf) Secondary
Building Units
Posted on 2017-06-22 - 17:03
Nanoscale
metal–organic frameworks (nMOFs) have shown tremendous
potential in cancer therapy and biomedical imaging. However, their
small dimensions present a significant challenge in structure determination
by single-crystal X-ray crystallography. We report here the structural
determination of nMOFs by rotation electron diffraction (RED). Two
isostructural Zr- and Hf-based nMOFs with linear biphenyldicarboxylate
(BPDC) or bipyridinedicarboxylate (BPYDC) linkers are stable under
intense electron beams to allow the collection of high-quality RED
data, which reveal a MOF structure with M12(μ3-O)8(μ3-OH)8(μ2-OH)6 (M = Zr, Hf) secondary building units (SBUs).
The nMOF structures differ significantly from their UiO bulk counterparts
with M6(μ3-O)4(μ3-OH)4 SBUs and provide the foundation for clarifying
the structures of a series of previously reported nMOFs with significant
potential in cancer therapy and biological imaging. Our work clearly
demonstrates the power of RED in determining nMOF structures and elucidating
the formation mechanism of distinct nMOF morphologies.
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Dai, Ruihan; Peng, Fei; Ji, Pengfei; Lu, Kuangda; Wang, Cheng; Sun, Junliang; et al. (2017). Electron Crystallography Reveals Atomic Structures
of Metal–Organic Nanoplates with M12(μ3‑O)8(μ3‑OH)8(μ2‑OH)6 (M = Zr, Hf) Secondary
Building Units. ACS Publications. Collection. https://doi.org/10.1021/acs.inorgchem.7b00845
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AUTHORS (7)
RD
Ruihan Dai
FP
Fei Peng
PJ
Pengfei Ji
KL
Kuangda Lu
CW
Cheng Wang
JS
Junliang Sun
WL
Wenbin Lin