Journal
INORGANIC CHEMISTRY
Volume 50, Issue 15, Pages 6853-6855Publisher
AMER CHEMICAL SOC
DOI: 10.1021/ic200744y
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Funding
- DTRA/US Army Research Office [W911NF-07-1-0533]
- WCU [R-31-2008-000-10055-0]
- National Research Foundation of Korea [R31-2011-000-10055-0] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
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In our study, we show by solid-state N-15 NMR measurements that an important zirconium metal-organic framework (UiO-66) with amino-functionalized links is composed of a mixture of amino and -NH3+Cl- salt functionalities rather than all amino functionality to give a composition of Zr6O4(OH)(4)(BDC-NH2)(4)(BDC-NH3+Cl-)(2) (UiO-66-A). UiO-66-A was postsynthetically modified to form a mixture of three functionalities, where the hemiaminal functionality is the majority species in UiO-66-B and aziridine is the majority functionality in UiO-66-C. UiO-66-A-C are all porous with surface areas ranging from 780 to 820 m(2)/g and have chemical stability, as evidenced by reversible ammonia uptake and release showing capacities ranging from 134 to 193 cm(3)/g.
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