Center for Reticular Chemistry, University of California, 607 Charles E. Young Dr. East, Los Angeles, California 90095, USA.
Inorg Chem. 2011 Aug 1;50(15):6853-5. doi: 10.1021/ic200744y. Epub 2011 Jun 28.
In our study, we show by solid-state (15)N NMR measurements that an important zirconium metal-organic framework (UiO-66) with amino-functionalized links is composed of a mixture of amino and -NH(3)(+)Cl(-) salt functionalities rather than all amino functionality to give a composition of Zr(6)O(4)(OH)(4)(BDC-NH(2))(4)(BDC-NH(3)(+)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.
在我们的研究中，我们通过固态 (15)N NMR 测量表明，具有氨基官能化链接的重要锆基金属有机骨架 (UiO-66) 由氨基和 -NH(3)(+)Cl(-) 盐官能团的混合物组成，而不是全部为氨基官能团，从而得到组成式为 Zr(6)O(4)(OH)(4)(BDC-NH(2))(4)(BDC-NH(3)(+)Cl(-))(2) (UiO-66-A)。UiO-66-A 经后合成修饰形成三种官能团的混合物，其中亚胺官能团是 UiO-66-B 中的主要物种，氮丙啶是 UiO-66-C 中的主要官能团。UiO-66-A-C 均具有多孔性，比表面积在 780 至 820 m(2)/g 之间，并且具有化学稳定性，这可以通过可逆的氨吸收和释放来证明，其容量范围为 134 至 193 cm(3)/g。
