The development of earth-abundant metal-oxide-based nanomaterials with an intrinsic enzyme-mimicking activity (nanozyme) is useful for both practical applications and fundamental research. laccase enzyme a multicopper oxidase that finds commercial utility in environmental remediation biotechnology, but significant limitations under harsh conditions. Herein, we present the laccase-like Cu2O nanospheres, fabricated using one-pot polyol-based microwave-assisted method. as-synthesized...

Abstract In the realm of heterogeneous catalysis, diffusion reactants into catalytically active sites stands as a pivotal determinant influencing both turnover frequency and geometric selectivity in product formation. While accelerated can elevate reaction rates, it often entails compromise selectivity. Porous catalysts, including metal-organic covalent organic frameworks, confront formidable obstacles regulating reactant rates. Consequently, chemical functionality catalysts typically...

An ecofriendly solid catalyst has been synthesized by anchoring palladium(II) into post synthetically modified metal organic framework IRMOF-3. The pore of IRMOF-3 was first with pyridine-2-aldehyde. amine group upon condensation pyridine-2-aldehyde afforded a bidentate Schiff base moiety in the porous matrix. moieties were used to anchor ions. prepared characterized UV–vis, IR spectroscopy, X-ray powder diffraction, and nitrogen sorption measurements. Framework structure is not being...

Abstract Zeolites and metal‐organic frameworks (MOFs) are considered as “competitors” for new separation processes. The production of high‐quality gasoline is currently achieved through the total isomerization process that separates pentane hexane isomers while not reaching ultimate goal a research octane number (RON) higher than 92. This work demonstrates how synergistic action zeolite 5A MIL‐160(Al) MOF leads to novel adsorptive upgrading an efficient isomers. innovative mixed‐bed...

N-Nitrosamine-derived nitric oxide (NO) delivery agents find widespread use in diverse biomedical applications, including cancer therapy. To understand how NO is released from these compounds and acts within cells, herein, we report a facile approach to synthesize N-nitrosamine-bound water-soluble napthalimide-based block copolymers (BCPx-NO) with improved regulation over their molecular weight aqueous solution self-assembly. These polymers exhibit fluorescence "turn-on" response upon...

We report a facile stimuli-responsive strategy to generate reactive oxygen and nitrogen species (ROS RNS) in the biological milieu from photocleavable water-soluble block copolymer under visible light irradiation (427 nm, 2.25 mW/cm2). An anthraquinone-based polymeric nitric oxide (NO) donor (BCPx-NO) is synthesized, which exhibits NO release range of 40–65 μM within 10 h photoirradiation with half-life 30–103 min. Additionally, BCPx-NO produces peroxynitrite (ONOO–) singlet (1O2)...

A new three-dimensional alkaline-earth metal–organic framework (MOF) compound, [Mg(Pdc)(H2O)]n (1) (H2Pdc = pyridine-2,5-dicarboxylic acid), has been synthesized and structurally characterized by single crystal X-ray diffraction analysis. Compound 1 features a 3D porous afforded the Mg2-diad centers through formation of interconnected chair like structural motifs. nitrogen adsorption study confirms microporosity compound with BET surface area 211 ± 12 m2 g−1. Upon dehydration, is enhanced to...

Abstract A highly porous Zn‐based metal–organic framework (MOF) IRMOF‐3 was covalently decorated with pyridine‐2‐aldehyde. The free amine group of upon condensation pyridine‐2‐aldehyde affords a bidentate Schiff‐base moiety in the matrix. Schiff base moieties are availed to anchor copper(II) ions display catalyst’s utility towards catalytic reactions. catalyst characterized by UV/Vis and IR spectroscopy, powder XRD spectrometry, SEM energy‐dispersive X‐ray nitrogen sorption measurements....

Three magnesium based carboxylate framework systems were prepared through a temperature-dependent synthesis. The compounds synthesized by hydrothermal method and characterized single crystal X-ray diffraction analysis. A stepwise increase in the temperature of medium resulted dimensionality network, ultimately leading to formation new 2D layered alkaline earth metal–organic (MOF) compound, {[Mg2(HL)2(H2O)4]·H2O}n (1) (H3L = pyrazole-3,5-dicarboxylate). Compound 1 selectively adsorbs hydrogen...

Two alkaline earth metal-based carboxylate systems, [Mg(HL)(H2O)2]n (1) and [Ca(H2L)2]n (2) (H3L = chelidamic acid) have been hydrothermally synthesized, characterized by single-crystal X-ray diffraction, IR, elemental analysis, thermo-gravimetric analysis. Compound 1 has a 2D structure incorporating two water molecules. The dehydrated species, 1a, generated from removal of the coordinated water, analysis variable temperature powder diffraction. Both its species 1a catalyze Claisen-Schmidt...

Amino acids, the natural building blocks of life, are highly functional small molecules with chirality and important catalytic properties. Imparting exquisite properties amino acids into macromolecules allows us to prepare unique, well-defined, biocompatible, functional, tailorable materials. They exhibit stimuli responsiveness, tunable optical characteristics, enhanced thermal, mechanical, biological desired cell-materials interactions. Considering salient features diverse applications...

Abstract A new 3D alkaline earth metal–organic framework (MOF), [Ba(Hdcp)H 2 O] n ( 1 ) (H 3 dcp = 3,5‐pyrazoledicarboxylic acid), has been hydrothermally synthesized and structurally characterized by single‐crystal X‐ray diffraction analysis. crystallographic study reveals that each metal ion in is coordinated eight O atoms one N atom. Each 3,5‐pyrazoledicarboxylato (Hdcp 2– ligand coordinates to six centers through two carboxylate groups, of which adopts a μ ‐η :η ‐bridging coordination...

A series of copper- and alkaline-earth-metal-based multidimensional metal–organic frameworks, {[CuMg(pdc)2(H2O)4]·2H2O}n (1), [CuCa(pdc)2]n (2), [CuSr(pdc)2(H2O)3]n (3), {[CuBa(pdc)2(H2O)5]·H2O}n (4), where H2Pdc = pyridine-2,5-dicarboxylic acid, were hydrothermally synthesized characterized. Two different metals act as the active center to catalyze two kinds reactions, viz., olefin its epoxide followed by ring opening afford corresponding vicinal diol in a sequential manner.

In recent years, the synthesis of materials in lower dimensions, like two-dimensional (2D) or ultrathin crystals, with distinctive characteristics has attracted substantial scientific attention. The mixed transition metal oxides (MTMOs) nanomaterials are promising group materials, which have been extensively utilized for various potential applications. Most MTMOs were explored as three-dimensional (3D) nanospheres, nanoparticles, one-dimensional (1D) nanorods, and nanotubes. However, these...

The microporous MOF MIL-140B can separate hexane isomers according to the degree of branching, linear >mono-branched >di-branched, with a remarkably high selectivity up 10 at 343 K. GCMC simulations confirm origins molecular separation.

Abstract New carboxylate systems with alkaline earth metals, namely, [Ca 2 Na (L) (H O) 6 ] n · H O ( 1 , 3 L = chelidamic acid) and [Sr 9 ), have been prepared by hydrothermal reactions characterized. The compounds featured different three‐dimensional (3D) structural motifs new topologies. amount of void space for the dehydrated materials was calculated to be ca. 19 35 %, respectively. are thermally stable more than 450 °C. species displayed excellent N CO sorption capacity at atm pressure....

Catalytic <italic>O</italic>-arylation reactions have been studied by employing a variety of copper(<sc>ii</sc>) Schiff-base complexes under environmentally benign conditions.

Highly efficient heterogeneous mesoporous silica based Cu-catalyst has been designed for<italic>O</italic>-arylation of phenol using nitroarene to afford unsymmetrical diarylethers. It can be recycled up 5 times without any significant loss catalytic activity.

Abstract Two new isostructural inorganic coordination polymers, [M(C 14 H 8 O 6 )(C 10 N 2 )2H O)] ⋅ (C 3 7 NO), (M=Co, Ni) were prepared employing 2, 5‐bis(prop‐2‐yn‐1‐yloxy)terephthalic acid (2,5 BPTA) and 4,4′ bipyridine as ligands. The connectivity between the metal‐centers ligands give rise to a two‐dimensional layer structure. Ni‐containing one has higher stability compared Co‐containing one. compound, 1 , was heated in Ar‐atmosphere prepare Co‐nanoparticles, supported over graphitic...