41738-56-1Relevant academic research and scientific papers
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.
Two new alkaline earth metal organic frameworks with the diamino derivative of biphenyl-4,4′-dicarboxylate as bridging ligand: Structures, fluorescence and quenching by gas phase aldehydes
Diamantis, Stavros A.,Pournara, Anastasia D.,Hatzidimitriou, Antonios G.,Manos, Manolis J.,Papaefstathiou, Giannis S.,Lazarides, Theodore
, p. 173 - 180 (2018)
Alkaline earth metal ion organic frameworks (AEMOFs) represent a relatively underexplored subcategory of MOFs. Two new MOFs [Ca6(bpdc-(NH2)2)5(μ3-HCO2)2(H2O)2.5(DMF)0.5]·0.5H2O·2.5DMF (1) and [Sr4(bpdc-(NH2)4)(μ2-DMF)2(DMF)1/3]·2/3(DMF) (2) [H2bpdc-(NH2)2 = 2,2′-diamino-[1,1′-biphenyl]-4,4′-dicarboxylic acid); DMF = N,N-dimethylformamide] are presented here. These MOFs display structural variety with diverse topologies and new structural features. Luminescence studies revealed that both MOFs display ligand based fluorescence with small differences in emission profiles possibly attributable to the difference in charge density of the metal ions combined with the different conformation adopted by the ligand in the crystal structures of 1 and 2. Furthermore, initial sensing studies reveal that both MOFs can potentially function as fluorescent sensors for gas phase aldehydes.
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.
High Water Adsorption MOFs with Optimized Pore-Nanospaces for Autonomous Indoor Humidity Control and Pollutants Removal
Zhu, Neng-Xiu,Wei, Zhang-Wen,Chen, Cheng-Xia,Xiong, Xiao-Hong,Xiong, Yang-Yang,Zeng, Zheng,Wang, Wei,Jiang, Ji-Jun,Fan, Ya-Nan,Su, Cheng-Yong
supporting information, (2021/12/14)
The indoor air quality is of prime importance for human daily life and health, for which the adsorbents like zeolites and silica-gels are widely used for air dehumidification and harmful gases capture. Herein, we develop a pore-nanospace post-engineering
Preparation method of 2,2'-diamido-diphenic acid
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Page/Page column 6-8, (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.
A significant enhancement of water vapour uptake at low pressure by amine-functionalization of UiO-67
Ko, Nakeun,Hong, Jisu,Sung, Siyoung,Cordova, Kyle E.,Park, Hye Jeong,Yang, Jin Kuk,Kim, Jaheon
supporting information, p. 2047 - 2051 (2015/02/05)
The functionalization of UiO-67 with -NH2 groups enhances CO2 and CH4 adsorption at 1 bar and 298 K and positively influences the framework's interaction with water as evidenced by the significant enhancement of water vapo
