期刊
CRYSTAL GROWTH & DESIGN
卷 20, 期 6, 页码 4127-4134出版社
AMER CHEMICAL SOC
DOI: 10.1021/acs.cgd.0c00407
关键词
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资金
- National Natural Science Foundation of China [21905281, 21771177]
- Strategic Priority Research Program of the Chinese Academy of Sciences [XDB20000000]
- Key Research Program of Frontier Sciences, Chinese Academy of Sciences [QYZDBSSW-SLH019]
- Natural Science Foundation of Fujian Province [2017J01032]
The construction of hydrogen-bonded frameworks from simple molecular tectons attracts widespread attention; however, it is still challenging to construct hydrogen-bonded framework isomers in a controllable way. On the basis of our previous work, via increasing the bridging hydrogen bond ratio and strength between Zr-metal organic cage (Zr-MOC), we report here two pairs of Zr-MOC based hydrogen-bonded framework isomers with different stabilities and porosities (ZrT-1-alpha and ZrT-1-beta, ZrT-2 alpha, and ZrT-2-beta). Compared to the fragile a-phase competitors, the beta-phase aggregations not only exhibit a higher ratio of O-H center dot center dot center dot Cl- bond, but also contain a stronger bridging hydrogen bond. Consequently, although ZrT-1-beta and ZrT-2-beta contain higher porosity, they show enhanced stability in the guest-free state.
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