The Infona portal uses cookies, i.e. strings of text saved by a browser on the user's device. The portal can access those files and use them to remember the user's data, such as their chosen settings (screen view, interface language, etc.), or their login data. By using the Infona portal the user accepts automatic saving and using this information for portal operation purposes. More information on the subject can be found in the Privacy Policy and Terms of Service. By closing this window the user confirms that they have read the information on cookie usage, and they accept the privacy policy and the way cookies are used by the portal. You can change the cookie settings in your browser.
5‐hydroxylmethylfurfural (HMF) is a bio‐based chemical that can be prepared from natural abundant glucose by using combined Brønsted–Lewis acid catalysts. In this work, Al3+ catalytic site has been grafted on Brønsted metal–organic frameworks (MOFs) to enhance Brønsted–Lewis acidity of MOF catalysts for a one‐pot glucose‐to‐HMF transformation. The uniform porous structure of zirconium‐based MOFs allows...
Developing functionalized 3D covalent organic frameworks (3D COFs) is critical to broaden their potential applications. However, the introduction of specific functionality in 3D COFs remains a great challenge because most of the functional groups are not compatible with the synthesis conditions. Herein, for the first time 3D thioether‐based COFs (JUC‐570 and JUC‐571) for mercury (Hg2+) removal from...
New approaches to gas/vapor storage and purification are urgently needed to address the large energy footprint, cost, and/or risk associated with existing technologies. In this context, new classes of porous physisorbents, exemplified by porous coordination networks (PCNs), have emerged. There are now >100 000 entries in the Cambridge Structural Database (CSD) metal‐organic framework (MOF) subset...
Electrochemical reduction of CO2 in aqueous media is an important reaction to produce value‐added carbon products in an environmentally and economically friendly manner. Various molecule‐based catalytic systems for the reaction have been reported thus far. The key features of state‐of‐the‐art catalytic systems in this field can be summarized as follows: 1) an iron‐porphyrin‐based scaffold as a catalytic...
As a burgeoning family of crystalline porous copolymers, covalent organic frameworks (COFs) allow precise atomic insertion of organic components in the topology construction to form periodic networks and ordered nanopores. Their 2D networks bear great similarities to graphene analogs, and therefore are essential additions to the 2D family. Here, the electronic properties of conductive 2D‐COFs are...
Solid‐state proton‐conductive materials have been of great interest for several decades due to their promising application as electrolytes in fuel cells and electrochemical devices. Metal–organic materials (MOMs) have recently been intensively investigated as a new type of proton‐conductive materials. The highly crystalline nature and structural designability of MOMs make them advantageous over conventional...
Crystalline porous materials have been extensively explored for wide applications in many fields including nonlinear optics (NLO) for frequency doubling, two‐photon absorption/emission, optical limiting effect, photoelectric conversion, and biological imaging. The structural diversity and flexibility of the crystalline porous materials such as the metal–organic frameworks, covalent organic frameworks,...
Managing elastic properties of ABX3 type molecular perovskite ferroelectrics is critical to their future applications since these parameters determine their service durability and reliability in devices. The abundant structural and chemical viability of these compounds offer a convenient way to manipulate their elastic properties through a facile chemical approach. Here, the elastic properties and...
Metal−organic frameworks (MOFs) and their derivatives have attracted enormous attention in the field of energy storage, due to their high specific surface area, tunable structure, highly ordered pores, and uniform metal sites. Compared with the wide research of MOFs and their related materials on anode materials for alkali metal ion batteries, few works are on cathode materials. In this review, design...
In article number 2006150, Mio Kondo, Shigeyuki Masaoka, and co‐workers demonstrate that the self‐assembly of iron porphyrin complexes with space modulators affords the porous crystalline solid with hydrophobic pores and adjacent active sites. The material efficiently catalyzes electrochemical CO2 reduction in aqueous media.
5‐hydroxylmethylfurfural (HMF) is a value‐added chemical obtained from sugars including glucose. In article number 2006541, Satoshi Horike, Kanokwan Kongpatpanich, and co‐workers design a metal–organic framework (MOF) catalyst for glucose‐to‐HMF transformation by incorporation of Lewis Al3+ site to Brønsted sulfonated MOFs. The local structure of acid sites is elucidated by XANES and DFT calculations...
In article number 2005449, Qiyun Tang, Yang Shi, Dan Ding, and co‐workers report a simple short alkyl modified strategy to regulate the molecular aggregation state and remarkably improve the luminescent efficiency and phosphorescence lifetime of pure organic room temperature phosphorescence (RTP) materials. The crystalline nanoparticles of RTP molecules are prepared with a “Top‐Down” method, which...
Transition metal catalyzed carbon—hydrogen functionalization imparts a paradigm shift in the complex target synthesis, including pharmaceutical and material science applications. To establish structure‐function‐property relationship of covalent organic frameworks, palladium docked dual‐pore COFs with controllable bipyridine content exhibit regioselective C—H to C—X (X = Cl, Br, I) and C—O functionalization,...
In article number 2004351, Ryotaro Matsuda and co‐workers present a bifunctional MOF that exhibits activation of triplet oxygen into singlet oxygen under UV‐light irradiation and the successive oxygen trapping in liquids, providing a paradigm shift in the field of gas adsorption in MOF nanospace from “gas‐phase molecular adsorption” to “liquid‐phase molecular adsorption.”
In article number 2005345, Ranbo Yu, Dan Wang, and co‐workers successfully incorporate the advanced structural design to construct the La‐ and Rh‐ co‐doped SrTiO3 (STO:La/Rh) hollow multi‐shelled structures (HoMSs). The elevated visible light responsive photocatalytic water splitting performances give a promising prospect for HoMSs‐based materials in photocatalytic and photo related fields. With a...
In article number 2005803, Shohei Tashiro, Mitsuhiko Shionoya, and co‐workers report residue‐specific recognition of amino acids and peptide derivatives in a porous metal‐macrocycle framework. Among several amino acid residues, serine moieties are site‐ and diastereo‐selectively adsorbed to a certain binding site on the pore surface through multipoint hydrogen bonding as clearly visualized by single‐crystal...
Despite numerous inherent merits of metal–organic frameworks (MOFs), structural fragility has imposed great restrictions on their wider involvement in many applications, such as in catalysis. Herein, a strategy for enhancing stability and enabling functionality in a labile Zr(IV)‐MOF has been proposed by in situ porphyrin substitution. A size‐ and geometry‐matched robust linear porphyrin ligand 4,4′‐(porphyrin‐5,15‐diyl)dibenzolate...
Active sites (intrinsic activity, quantity, and distribution), electron transfer, and mass diffusion are three important factors affecting the performance of electrocatalysts. Composed of highly active components which are built into various network structures, porous noble metal is an inherently promising electrocatalysts. In recent years, great efforts have been made to explore new efficient synthesis...
Set the date range to filter the displayed results. You can set a starting date, ending date or both. You can enter the dates manually or choose them from the calendar.