Effective mercury sorption by thiol-laced metal-organic frameworks: in strong acid and the vapor phase.
Effective mercury sorption by thiol-laced metal-organic frameworks: in strong acid and the vapor phase.
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DOI：
10.1021/ja400212k
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发表时间：
2013-05
影响因子：
15
通讯作者：
Ka-Kit Yee;N. Reimer;Jie Liu;S. Cheng;S. Yiu;J. Weber;N. Stock;Zhengtao Xu
中科院分区：
文献类型：
--
作者：
Ka-Kit Yee;N. Reimer;Jie Liu;S. Cheng;S. Yiu;J. Weber;N. Stock;Zhengtao Xu
独立的、可获得的硫醇（-SH）功能已经安装在坚固的、多孔的配位网络中，以提供广泛的固体反应性和性能。ZrCl4或AlCl3与具有硬羧基和软硫醇功能的2,5-二巯基-1,4-苯二羧酸（H2DMBD）反应组装骨架。得到的Zr- dmbd和Al- dmbd框架分别具有UiO-66和CAU-1的拓扑结构，羧基与坚硬的Zr（IV）或Al（III）中心键合，巯基修饰孔洞。硫醇掺杂的Zr-DMBD晶体将水中的汞（II）浓度降低到0.01 ppm以下，并有效地从气相吸收汞。Zr-DMBD固体还具有近白色的光致发光，在汞吸收后明显淬灭。因此，羧基/硫醇组合说明了功能框架的软硬策略的更广泛适用性。
Free-standing, accessible thiol (-SH) functions have been installed in robust, porous coordination networks to provide wide-ranging reactivities and properties in the solid state. The frameworks were assembled by reacting ZrCl4 or AlCl3 with 2,5-dimercapto-1,4-benzenedicarboxylic acid (H2DMBD), which features the hard carboxyl and soft thiol functions. The resultant Zr-DMBD and Al-DMBD frameworks exhibit the UiO-66 and CAU-1 topologies, respectively, with the carboxyl bonded to the hard Zr(IV) or Al(III) center and the thiol groups decorating the pores. The thiol-laced Zr-DMBD crystals lower the Hg(II) concentration in water below 0.01 ppm and effectively take up Hg from the vapor phase. The Zr-DMBD solid also features a nearly white photoluminescence that is distinctly quenched after Hg uptake. The carboxyl/thiol combination thus illustrates the wider applicability of the hard-and-soft strategy for functional frameworks.