Nanochannel-based {BaZn}–organic framework for catalytic activity on the cycloaddition reaction of epoxides with CO<sub>2</sub> and deacetalization-Knoevenagel condensation
Nanochannel-based [(CH3)2NH2]2[BaZn(TDP)(H2O)]×DMF×5H2O}n (NUC-51) is synthesized and displays a high catalytic activity on the cycloaddition reactions of epoxides with CO2 and the deacetalization-Knoevenagel condensation reaction.
Highly Robust {Ln<sub>4</sub>}-Organic Frameworks (Ln = Ho, Yb) for Excellent Catalytic Performance on Cycloaddition Reaction of Epoxides with CO<sub>2</sub> and Knoevenagel Condensation
作者:Tao Zhang、Hongtai Chen、Shurong Liu、Hongxiao Lv、Xiutang Zhang、Qiaoling Li
DOI:10.1021/acscatal.1c04260
日期:2021.12.17
Due to the high electron charge, large ion radius, and plentiful outer hybrid orbitals of LnIII cations, microporous Ln-MOFs can be used as Lewis acidic catalysts with high catalytic activity for a variety of organic reactions, which prompts us to explore cluster-based nanoporous Ln-MOFs by employing structure-oriented ligands. Herein, the exquisite combination of coplanar [Ln4(μ3–OH)2(μ2–HCO2)(H2O)2]
A highly robust cluster-based indium(<scp>iii</scp>)–organic framework with efficient catalytic activity in cycloaddition of CO<sub>2</sub> and Knoevenagel condensation
molecules. Herein, the solvothermal self-assembly led to a highly robust nanochannel-based framework of [In4(CPDD)2(μ3-OH)2(DMF)(H2O)2]·2DMF·5H2O}n (NUC-66) with a 56.8% void volume, which is a combination of a tetranuclear cluster [In4(μ3-OH)2(COO)10(DMF)(H2O)2] (abbreviated as In4}) and a conjugated tetracyclic pentacarboxylic acid ligand of 4,4′-(4-(4-carboxyphenyl)pyridine-2,6-diyl)diisophthalic acid
The Investigation of CO2 Chemical Fixation and Fluorescent Recognition for YbIII-Organic Framework
作者:Yanqing Di、Yiheng Chen、Yang Cao、Xiaowei Cui、Yongliang Liu、Chunsheng Zhou、Youying Di
DOI:10.1007/s10562-023-04270-w
日期:——
aqueous solution. Therefore, the work shows that microporousMOFs assembled from pyridine-containing polycarboxylic acid ligands and rare earth ions can serve as excellent catalytic and luminescent materials. Graphical Abstract A highly robust ytterbium (III)-organic framework of [(CH3)2NH2]2[Yb3 (BDCP)2(NO3)(OH2)3]·2DMF·3H2O}n (NUC-58) for efficiently catalyzing the chemical fixation of CO2.
通过组合生成了双通道材料[(CH 3 ) 2 NH 2 ][Yb 3 (BDCP) 2 (H 2 O) 3 ]·2DMF·3H 2 O} n (NUC-58)借助2,6-双(2,4-二羧基苯基)形成波状[Yb 2 (CO 2 ) 6 (H 2 O) 2 ] n链和[Yb(CO 2 ) 4 (H 2 O)]单元)-4-(4-羧基苯基)吡啶,具有优异的物理和化学性能,包括较大的比表面积、高孔隙率、耐水性和热稳定性。NUC-58是一种罕见报道的无溶剂双通道微孔MOF。由于路易斯酸碱位点共存,包括丰富的六/七配位 Yb 3+离子、 μ 1 − η 1 : η 1 CO 2−中的 C = O 基团和 N吡啶原子,NUC-58 显示出高催化性在温和的无溶剂反应条件下,环氧化物和CO 2成相关环状碳酸酯的环加成反应的活性。此外,NUC-58可作为快速、灵敏、高效的传感器,用于水溶液中Cu 2+ 的检测
Nanocage-Based Tb<sup>3+</sup>-Organic Framework for Efficiently Catalyzing the Cycloaddition Reaction of CO<sub>2</sub> with Epoxides and Knoevenagel Condensation
Npyridine atoms. Performed experiments exhibited that NUC-58 owns a better catalytic performance for the cycloaddition reactions under mild conditions with a high turnover number and turnover frequency. Furthermore, NUC-58, as an eminent heterogeneous catalyst, can enormously boost the Knoevenagelcondensation reactions. Thus, this work opens a path for the precise design of polynuclear metal cluster-based