A new layer-stacked porous framework showing sorption selectivity for CO2 and luminescence

作者：Yang, Hong-Yun; Li, Yong-Zhi; Shi, Wen-Juan; Hou, Lei^*; Wang, Yao-Yu; Zhu, Zhonghua

来源：Dalton Transactions, 2017, 46(35): 11722-11727.

DOI：10.1039/c7dt02496g

• METAL-ORGANIC FRAMEWORKS
• GAS-SORPTION
• COORDINATION POLYMERS
• SINGLE-CRYSTAL
• CARBON-DIOXIDE
• STRUCTURAL VARIATION
• BUILDING-BLOCKS
• NITROGEN SITES
• ADSORPTION
• SEPARATION

A new metal-organic framework, [Zn-3(mu(3)-OH)(tzba)(2)(bpy)(H2O)]OH center dot DMF (1), was solvothermally synthesized by employing tetrazolate-carboxylate 4-(1H-tetrazol-5-yl) benzoic acid (H(2)tzba) linker and 2,2'bipyridine (bpy) chelating coligand. 1 contains novel Zn-6(mu(3)-OH)(2)(mu(2)-H2O)(2)(COO)(4)(N4C)(2) hexanuclear clusters and reveals a three-dimensional (3D) microporous supramolecular framework based on the stacked 2D layers. The highly polar pores cause not only strong affinity towards CO2 molecules but also a significant selective adsorption of CO2 over CH4. Meanwhile, the multiple binding sites for CO2 in the framework were determined by Grand Canonical Monte Carlo (GCMC) simulations. 1 also shows strong blue luminescence from ligand-to-metal charge transfer (LMCT).

• 出版日期2017-9-21
• 单位西北大学; 汕头大学