A series of microporous and robust Ln-MOFs showing luminescence properties and catalytic performances towards Knoevenagel reactions. Issue 47 (25th November 2021)

• Record Type: Journal Article
• Authors: Tian, Miaomiao; Zheng, Jun; Xue, Jintang; Pan, Xuze; Zhou, Dandan; Yao, Qingxia; Li, Yunwu; Duan, Wenzeng; Su, Jie; Huang, Xianqiang
• Is Part Of: Dalton transactions. Volume 50:Issue 47(2021)
• Page Start: 17785
• Page End: 17791
• Publication Date: 2021-11-25
• Subjects: Chemistry, Inorganic -- Periodicals; Chemistry, Physical and theoretical -- Periodicals; Chemistry, Inorganic -- Periodicals; 546.05
• DOI: 10.1039/d1dt03188k
• Languages: English
• ISSNs: 1477-9226

Abstract

Abstract : A series of microporous and stable LnMOFs (1-Ln, Ln = La, Pr, Eu, and Tb) has been synthesized from H3 NTB ligand. 1-Tb shows the best catalytic activities (yield 99%) for Knoevenagel reactions, providing a unique example to differentiate the role of Ln ions in catalysis. Abstract : A series of microporous Ln(iii )-based metal–organic frameworks (1-Ln ) have been hydrothermally synthesized using 4, 4′, 4′′-nitrilotribenzoic acid (H3 NTB). Single crystal X-ray diffraction analyses show that 1-Ln are isostructural and have 3D porous frameworks with remarkable stability and permanent porosity for Ar and CO2 adsorption. In addition, 1-Ln exhibit diverse photoluminescence emissions depending on the nature of lanthanide ions. More importantly, 1-Ln are further studied in the Knoevenagel reactions of benzaldehyde derivatives and malononitrile under solvent-free conditions, and it is found that 1-Tb shows the best catalytic activities (yields up to 99%), providing a unique example to differentiate the roles of Ln ions within the frameworks in catalyzing Knoevenagel reactions.