18643-86-2Relevant articles and documents
Gated Channels and Selectivity Tuning of CO2over N2Sorption by Post-Synthetic Modification of a UiO-66-Type Metal–Organic Framework
Kronast, Alexander,Eckstein, Sebastian,Altenbuchner, Peter T.,Hindelang, Konrad,Vagin, Sergei I.,Rieger, Bernhard
, p. 12800 - 12807 (2016)
The highly porous and stable metal–organic framework (MOF) UiO-66 was altered using post-synthetic modifications (PSMs). Prefunctionalization allowed the introduction of carbon double bonds into the framework through a four-step synthesis from 2-bromo-1,4-benzenedicarboxylic acid; the organic linker 2-allyl-1,4-benzenedicarboxylic acid was obtained. The corresponding functionalized MOF (UiO-66-allyl) served as a platform for further PSMs. From UiO-66-allyl, epoxy, dibromide, thioether, diamine, and amino alcohol functionalities were synthesized. The abilities of these compounds to adsorb CO2and N2were compared, which revealed the structure–selectivity correlations. All synthesized MOFs showed profound thermal stability together with an increased ability for selective CO2uptake and molecular gate functionalities at low temperatures.
Nickel?alkyne?functionalized metal?organic frameworks: An efficient and reusable catalyst
Chen, Huixin,Cheng, Hua,Li, Jilin,Li, Wei,Liao, Shengyun,Liu, Xin,Ning, Liangmin,Shao, Liming,Tang, Siyuan
, (2021/06/15)
Electron-donating groups in the robust MOF motif are able to provide an excellent catalytic platform, therefore obtaining site-isolated metal sites. In this study, the terminal alkyne is firstly introduced into UiO-66-type metal-organic frameworks (UiO-66-alkyne). Herein, to further study the application potential of this material, a covalently bonded nickel catalyst based on the alkynyl-tagged UiO-66-alkyne has been prepared and afforded us unprecedented highly dispersed and highly efficient catalytic active species. Meanwhile, this nickel-contained catalyst method for joining metals provided an alternative pathway regarding catalyst designing. With UiO-66-alkyne-Ni, the heterogeneous transformation of homogeneous catalysts is realized. Using benzaldehyde and malononitrile as starting materials, we were able to catalyze the Knoevenagel condensation within 45 min under room temperature with yield (> 99 %). Moreover, the recovery rate of the UiO-66-alkyne-Ni also outperformed previous MOFs in both small-scale and gram-level reactions, which shows UiO-66-alkyne-Ni is a potential contributor to the subsequent industrialization.
Synthesis of: O-carborane-functionalized metal-organic frameworks through ligand exchanges for aggregation-induced emission in the solid state
Choi, Sangdon,Lee, Ha-Eun,Ryu, Chan Hee,Lee, Jooyeon,Lee, Jihyun,Yoon, Minyoung,Kim, Youngjo,Park, Myung Hwan,Lee, Kang Mun,Kim, Min
supporting information, p. 11844 - 11847 (2019/10/14)
The carborane (CB)-functionalized ligand was installed in a variety of MOFs through postsynthetic ligand exchange processes. This methodology is a general method for preparing o-CB-functionalized MOFs with known frameworks. Furthermore, the photoluminescence (PL) spectra revealed intriguing aggregation-induced emission (AIE) features following the systematic incorporation of o-CB functionalities into framework-type materials.