Diamino group-functionalized Zr-based metal–organic framework for fluorescence sensing of free chlorine in the aqueous phase and Knoevenagel condensation

Abstract

We developed a porous zirconium (Zr) ions containing diamine fuctionalized metal-organic framework (MOF). The synthesized MOF has similar structure like DUT-52 (DUT = Dresden University of Technology), which has face...

Robust {Cd4}-Organic Framework for Efficiently Catalyzing CO2 Cycloaddition and Knoevenagel Condensation

“…Since the chemical transformation of CO 2 into cyclic carbonates has the advantage of solving the energy crisis and eliminating the greenhouse gas of CO 2 , the catalytic activity of NUC-67a was investigated because of its high CO 2 adsorption capacity, worm-shaped nanoscale pore structure, and generous coexistent Lewis acid–base sites of exposed Cd II sites, N pyridine atoms, Me 2 NH 2 + , μ 3 -OH, and CH 3 CO 2 – . − In order to evaluate and optimize the catalytic performance of NUC-67a , propylene oxide (PO) was taken as the model to fulfill the cycloaddition of CO 2 for the expectant product of propylene carbonate (PC). As shown in entry 1 of Table , no reaction was found under the catalyst-less condition.…”

A self-cleaning hydrophobic MOF-based composite for highly efficient and recyclable separation of oil from water and emulsions

“…[16][17][18] The wide range of functionality in the family of MOFs makes them unique in the field of sensing and catalysis. [19][20][21][22][23] The other absorbent materials like core-shell magnetic materials developed by Yu et al have very low surface areas, whereas the MOF materials have very large surface areas, which is advantageous for absorption-related applications. 24,25 Therefore, we synthesized a Zr(IV) based MOF material (1 0 @CF 3 ) with a -OCOCF 3 group by the post-synthetic modification of Zr-BDC-OH MOF (1 0 ) with trifluoroacetic anhydride.…”

A highly robust cluster-based indium(iii)–organic framework with efficient catalytic activity in cycloaddition of CO2 and Knoevenagel condensation

“…According to the structural characteristics of NUC-66a and the description in relevant literature studies, [74][75][76][77][78][79] a reasonable mechanism for the Knoevenagel condensation reaction cata-…”

“…34,35 However, the carbon atom in the CO 2 molecule is in its highest oxidation state, has greater chemical inertia, and requires more stringent reaction conditions. 36,37 Therefore, the development of efficient catalysts to promote this reaction has become the focus of global scientists. The currently reported catalysts for this cycloaddition reaction include metal oxides, metal complexes, alkali metals, ionic liquids, metalloporphyrins, metal phthalocyanines and supported catalysts, 38,39 whereas, according to the scientific research in recent years, MOFs have been gradually recognized as a class of emerging materials with great potential in CO 2 capture and conversion catalysts because of their outstanding features including the orderliness of pores, the controllability of pore volume, high specific surface area, excellent selective adsorption capacity and functional diversity of functional groups.…”