41738-56-1Relevant articles and documents
A bifunctional, site-isolated metal-organic framework-based tandem catalyst
Dau, Phuong V.,Cohen, Seth M.
, p. 3134 - 3138 (2015)
Herein, we present the synthesis of a metal-organic framework-based tandem catalyst that contains two distinct catalytic domains. Zn(II)-based IRMOF-9-Irdcppy-NH2 (IRMOF = isoreticular metal-organic framework) has both organocatalytic amine and organometallic Ir(I) groups that were incorporated by both pre- and postsynthetic functionalization methods. The isolated amine and Ir(I) sites of IRMOF-9-Irdcppy-NH2 are shown to be independently catalytically active for performing a Knoevenagel condensation and allylic N-alkylation, respectively. More importantly, IRMOF-9-Irdcppy-NH2 can act as a tandem catalyst for both of these organic transformations in a one-pot reaction, which cannot be achieved efficiently using the combined, homogeneous analogues.
Dual emission in a ligand and metal co-doped lanthanide-organic framework: Color tuning and temperature dependent luminescence
Andriotou, Despoina,Diamantis, Stavros A.,Zacharia, Anna,Itskos, Grigorios,Panagiotou, Nikos,Tasiopoulos, Anastasios J.,Lazarides, Theodore
, (2020)
In this study, we report the luminescence color tuning in the lanthanide metal-organic framework (LnMOF) ([La(bpdc)Cl(DMF)] (1); bpdc2? = [1,1′-biphenyl]-4,4′-dicarboxylate, DMF = N,N-dimethylformamide) by introducing dual emission properties in a La3+ MOF scaffold through doping with the blue fluorescent 2,2′-diamino-[1,1′-biphenyl]-4,4′-dicarboxylate (dabpdc2?) and the red emissive Eu3+. With a careful adjustment of the relative doping levels of the lanthanide ions and bridging ligands, the color of the luminescence was modulated, while at the same time the photophysical characteristics of the two chromophores were retained. In addition, the photophysical properties of the parent MOF (1) and its doped counterparts with various dabpdc2?/bpdc2? and Eu3+/La3+ ratios and the photoinduced energy transfer pathways that are possible within these materials are discussed. Finally, the temperature dependence study on the emission profile of a doped analogue containing 10% dabpdc2? and 2.5% Eu3+ (7) is presented, highlighting the potential of this family of materials to behave as temperature sensors.
Preparation method of 2,2'-diamido-diphenic acid
-
, (2018/10/19)
The invention discloses a preparation method of 2,2'-diamido-diphenic acid. The preparation method comprises the following steps: firstly, mixing [1,1'-biphenyl]-4,4'-dimethyl dicarboxylate with a reaction solution C, stirring and reacting under the condition of ice bath, reacting at room temperature and adding ice blocks; after extracting, washing with saturated salt water, drying with anhydroussodium sulfate, and carrying out decompressing and spin drying to obtain a compound A; secondly, mixing the compound A with methanol for stirring, adding palladium carbon, displacing the air with hydrogen, stirring at room temperature, removing the palladium carbon by filtering and carrying out decompression concentration to obtain a compound B; thirdly, dissolving the compound B in tetrahydrofuran, adding double distilled water and potassium hydroxide, stirring at room temperature, washing with organic phase for two times and combining the water phase with water for cleaning the organic phaseto obtain a mixed solution F; adjusting the pH value of the mixed solution F to 3 by using concentrated hydrochloric acid, filtering and carrying out air drying to obtain the 2,2'-diamido-diphenic acid. The preparation method of the 2,2'-diamido-diphenic acid disclosed by the invention has the advantages of simplicity, high yield and low production cost.
