Hydrolytic Transformation of Microporous Metal–Organic Frameworks to Hierarchical Micro‐ and Mesoporous MOFs
作者:Yonghwi Kim、Tao Yang、Gyeongwon Yun、Mohammad Bagher Ghasemian、Jaehyoung Koo、Eunsung Lee、Sung June Cho、Kimoon Kim
DOI:10.1002/anie.201506391
日期:2015.11.2
to the synthesis of hierarchicalmicro‐ and mesoporousMOFs from microporousMOFs involves a simple hydrolytic post‐synthetic procedure. As a proof of concept, a new microporousMOF, POST‐66(Y), was synthesized and its transformation into a hierarchicalmicro‐ and mesoporousMOF by water treatment was studied. This method produced mesopores in the range of 3 to 20 nm in the MOF while maintaining the
Modulating the Performance of an Asymmetric Organocatalyst by Tuning Its Spatial Environment in a Metal–Organic Framework
作者:Lujia Liu、Tian-You Zhou、Shane G. Telfer
DOI:10.1021/jacs.7b07921
日期:2017.10.4
Systematically tuning the spatial environment around the active sites of synthetic catalysts is a difficult challenge. Here, we show how this can be accomplished in the pores of multicomponent metal-organicframeworks. This relies on embedding a catalytic unit in a pore of the MUF-77 framework and then tuning its environment by introducing different functional groups to the surrounding linkers. This
Metal-Ion Metathesis in Metal-Organic Frameworks: A Synthetic Route to New Metal-Organic Frameworks
作者:Yonghwi Kim、Sunirban Das、Saurav Bhattacharya、Soonsang Hong、Min Gyu Kim、Minyoung Yoon、Srinivasan Natarajan、Kimoon Kim
DOI:10.1002/chem.201202899
日期:2012.12.21
porous metal–organicframework, Mn(H3O)[(Mn4Cl)3(hmtt)8] (POST‐65), was prepared by the reaction of 5,5′,10,10′,15,15′‐hexamethyltruxene‐2,7,12‐tricarboxylic acid (H3hmtt) with MnCl2 under solvothermal conditions. POST‐65(Mn) was subjected to post‐synthetic modification with Fe, Co, Ni, and Cu according to an ion‐exchange method that resulted in the formation of three isomorphous frameworks, POST‐65(Co/Ni/Cu)
Photoinduced Electron Transfer in Multicomponent Truxene-Quinoxaline Metal–Organic Frameworks
作者:Joel Cornelio、Seok June Lee、Tian-You Zhou、Adil Alkaş、Kavipriya Thangavel、Andreas Pöppl、Shane G. Telfer
DOI:10.1021/acs.chemmater.2c02220
日期:2022.9.27
Metal–organicframeworks (MOFs) can respond to light in a number of interesting ways. Photochromism is observed when a structural change to the framework is induced by the absorption of light, which results in a color change. In this work, we show that introducing quinoxaline ligands to MUF-7 and MUF-77 (MUF = Massey University Framework) produces photochromic MOFs that change color from yellow to
Systematic Tuning of the Luminescence Output of Multicomponent Metal–Organic Frameworks
作者:Joel Cornelio、Tian-You Zhou、Adil Alkaş、Shane G. Telfer
DOI:10.1021/jacs.8b09887
日期:2018.11.14
Metal-organic frameworks (MOFs) exhibit a broad range of luminescence characteristics due to the vast array of metal ions and organic linkers available as building blocks. Systematic control over the emissive output of MOFs is highly sought after. Methods for tuning emission profiles are emerging based largely on luminescent metal ions and the encapsulation of emissive guests. Herein, we show how the functionalization of the organic linkers of a series of multicomponent MUF-77 (MUF = Massey University Framework) materials can methodically tune their spectral output. This was quantified by chromaticity diagrams. White-light emission was obtained by combining the photophysical characteristics of the three distinct organic fluorophores present in these materials. Our results also show that both (i) energy transfer interactions between the organic components and (ii) noncovalent interactions with guests can also be harnessed to tune the emission. These results establish multicomponent metal-organic frameworks as fluorescent materials with unique spectral characteristics.