Structure, Hydrogen Storage, and Luminescence Properties of Three 3D Metal−Organic Frameworks with NbO and PtS Topologies
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- 作者：Ming Xue ; Guangshan Zhu ; Yangxue Li ; Xiaojun Zhao ; Zhao Jin ; Enhua Kang ; Shilun Qiu
- 刊名：Crystal Growth & Design
- 出版年：2008
- 出版时间：July 2008
- 年：2008
- 卷：8
- 期：7
- 页码：2478 - 2483
- 全文大小：1096K
- 年卷期：v.8,no.7(July 2008)
- ISSN：1528-7505
文摘
Three 3D multifunctional microporous metal−organic frameworks (MOFs), Cu2(ABTC)(H2O)2·(DMF)2(H2O) (JUC-62), Cd2(ABTC)(DMF)3·(DMF)2 (JUC-63), and Mn(H2ABTC)(DMF)2 (JUC-64) (H4ABTC = 3,3′,5,5′-azobenzenetetracarboxylic acid, DMF = N,N′-dimethylformamide, and JUC = Jilin University China) have been synthesized by self-assembly of a rigid tetra-carboxylate ligand H4ABTC and corresponding transition metal salts under mild conditions. X-ray crystallography reveals that their topologies are based on NbO (JUC-62) and PtS (JUC-63 and JUC-64) nets, constructed of 4-connected rectangular ABTC4− units with 4-connected square paddle-wheel Cu2(CO2)4(H2O)2 secondary building units (SBUs), tetrahedral bimetallic Cd2(CO2)4(DMF)3 SBUs, and tetrahedral monometallic Mn(CO2)4(DMF)3 SBUs, respectively. High-pressure hydrogen sorption of the activated JUC-62 reveals a type I profile at 77 K, which is saturated at 40 bar with a hydrogen uptake of about 4.71 wt%. Photoluminescence investigations reveal that JUC-62 and JUC-63 display strong main emission spectra peaks at 392 and 402 nm, respectively.