通过点击八羧酸配体和Cu(II)离子的溶剂热组装成功构建了包含暴露金属位点和富氮三唑基团的高度多孔金属有机骨架(MOF),其对CO2分子具有高亲和力,清楚地证实了气体吸附和拉曼光谱检测。构建的具有 CO2 吸附特性和暴露的路易斯酸金属位点的 MOF 可以作为基于 CO2 的化学固定的优良催化剂。MOF 的催化活性通过 CO2 环加成与小环氧化物的显着高效证实。当将底物扩展到更大的底物时,其活性急剧下降。这些观察结果表明,MOF 催化的小底物的 CO2 环加成是在框架内进行的,而大分子不易进入多孔骨架进行催化反应。因此,由于孔径的限制,合成的 MOF 对不同底物表现出高催化选择性。在催化 CO2 环加成反应中对小环氧化物的高效率和尺寸依赖性选择性使这种 MOF 成为一种有前途的碳固定多相催化剂。
Regioselective Conversion of Arenes to<i>N</i>-aryl-1,2,3-triazoles Using CH Borylation
作者:Rajavel Srinivasan、Anthony G. Coyne、Chris Abell
DOI:10.1002/chem.201403021
日期:2014.9.8
A one‐pot protocol for the synthesis of N‐aryl 1,2,3‐triazoles from arenes by an iridium‐catalyzed CH borylation/copper catalyzed azidation/click sequence is described. 1 mol % of Cu(OTf)2 was found to efficiently catalyze both the azidation and the click reaction. The applicability of this method is demonstrated by the late‐stage chemoselective installation of 1,2,3‐triazole moiety into unactivated
A Highly Stable Triazole‐Functionalized Metal–Organic Framework Integrated with Exposed Metal Sites for Selective CO
<sub>2</sub>
Capture and Conversion
作者:Vijay Gupta、Sanjay K. Mandal
DOI:10.1002/chem.201903912
日期:2020.2.26
A new triazole-functionalized tetracarboxylic acid ligand (H4 L) has been synthesized and utilized for the fabrication of a 3D ZnII organic framework with a Zn4 (-COO)6 cluster as the secondary buildingunit. The framework exhibits very good thermal stability and consists of dual functionalities of exposed Lewis acidic metal sites and accessible nitrogen-donor Lewis basic sites. The Lewis basic nitrogen
[EN] SYSTEM AND METHOD FOR GENERATING AND/OR SCREENING POTENTIAL METAL-ORGANIC FRAMEWORKS<br/>[FR] SYSTÈME ET PROCÉDÉ DE GÉNÉRATION ET/OU DE CRIBLAGE DE RÉSEAUX MÉTALLO-ORGANIQUES POTENTIELS
申请人:UNIV NORTHWESTERN
公开号:WO2013058844A1
公开(公告)日:2013-04-25
A system and method for systematically generating potential metal-organic framework (MOFs) structures given an input library of building blocks is provided herein. One or more material properties of the potential MOFs are evaluated using computational simulations. A range of material properties (surface area, pore volume, pore size distribution, powder x-ray diffraction pattern, methane adsorption capability, and the like) can be estimated, and in doing so, illuminate unidentified structure-property relationships that may only have been recognized by taking a global view of MOF structures. In addition to identifying structure-property relationships, this systematic approach to identify the MOFs of interest is used to identify one or more MOFs that may be useful for high pressure methane storage.
作者:Jared B. DeCoste、Mitchell H. Weston、Patrick E. Fuller、Trenton M. Tovar、Gregory W. Peterson、M. Douglas LeVan、Omar K. Farha
DOI:10.1002/anie.201408464
日期:2014.12.15
We present a systematic study of metal–organicframeworks (MOFs) for the storage of oxygen. The study starts with grand canonical Monte Carlo simulations on a suite of 10 000 MOFs for the adsorption of oxygen. From these data, the MOFs were down selected to the prime candidates of HKUST‐1 (Cu‐BTC) and NU‐125, both with coordinatively unsaturated Cu sites. Oxygen isotherms up to 30 bar were measured
Synthesis of Homoleptic Ruthenium “Star” Complexes by Click Reaction for TiO
<sub>2</sub>
Sensitization
作者:Keyur P. Chitre、Elena Guillén、Audri Soojin Yoon、Elena Galoppini
DOI:10.1002/ejic.201200896
日期:2012.11
Homoleptic RuII complexes carrying rigid linkers for attachment to semiconductor surfaces were synthesized by using the clickreaction. Star-shaped complexes KStar-TzC-pBn (1a) and KStar-TzC-Ipa (1b), composed of 2,2′-bipyridine ligands 4,4′-disubstituted with 1,2,3-triazole rings connected to the Ru complex through the C4 of the 1,2,3-triazole (Tz) ring and capped with p-benzoic (pBn) and isophthalic