Covalent organic frameworks writ large framework (COF) materials have been difficult to characterize structurally and exploit because they tend form powders or amorphous materials. Ma et al. studied a variety of three-dimensional COFs based on imine linkages (see the Perspective by Navarro). They found that addition aniline inhibited nucleation allowed growth crystals enough for single-crystal x-ray diffraction studies. Evans describe two-step process in which nanoscale seeds boronate...

Enzymatic catalytic processes possess great potential in chemical manufacturing, including pharmaceuticals, fuel production and food processing. However, the engineering of enzymes is severely hampered due to their low operational stability difficulty reuse. Here, we develop a series stable metal-organic frameworks with rationally designed ultra-large mesoporous cages as single-molecule traps (SMTs) for enzyme encapsulation. With high concentration SMTs, PCN-333(Al) encapsulates three...

The crystal structure of a new covalent organic framework, termed COF-320, is determined by single-crystal 3D electron diffraction using the rotation (RED) method for data collection. COF crystals are prepared an imine condensation tetra-(4-anilyl)methane and 4,4'-biphenyldialdehyde in 1,4-dioxane at 120 °C to produce highly porous 9-fold interwoven diamond net. COF-320 exhibits permanent porosity with Langmuir surface area 2400 m(2)/g methane total uptake 15.0 wt % (176 cm(3)/cm(3)) 25 80...

A series of mesoporous metalloporphyrin Fe-MOFs, namely PCN-600(M) (M = Mn, Fe, Co, Ni, Cu), have been synthesized using the preassembled [Fe3O(OOCCH3)6] building block. PCN-600 exhibits a one-dimensional channel as large 3.1 nm and highest experimental pore volume 1.80 cm(3)g(-1) among all reported porphyrinic MOFs. It also shows very high stability in aqueous solutions with pH values ranging from 2-11 is to our knowledge only MOF stable under basic conditions. PCN-600(Fe) has demonstrated...

Implementation of a computer program package for automated collection and processing rotation electron diffraction (RED) data is described. The software contains two programs:

Abstract Through topological rationalization, a zeotype mesoporous Zr‐containing metal–organic framework (MOF), namely PCN‐777, has been designed and synthesized. PCN‐777 exhibits the largest cage size of 3.8 nm highest pore volume 2.8 cm 3 g −1 among reported Zr‐MOFs. Moreover, shows excellent stability in aqueous environments, which makes it an ideal candidate as support to incorporate different functional moieties. facile internal surface modification, interaction between guests can be...

A base-resistant porphyrin metal–organic framework (MOF), namely PCN-602 has been constructed with 12-connected [Ni8(OH)4(H2O)2Pz12] (Pz = pyrazolate) cluster and a newly designed pyrazolate-based ligand, 5,10,15,20-tetrakis(4-(pyrazolate-4-yl)phenyl)porphyrin under the guidance of reticular synthesis strategy. Besides its robustness in hydroxide solution, also shows excellent stability aqueous solutions F–, CO32–, PO43– ions. Interestingly, Mn3+-porphyrinic PCN-602, as recyclable MOF...

We have successfully constructed a metal-organic framework, denoted as PCN-128W, starting from chromophoric linker and zirconium salt. PCN-128W exhibits interesting piezofluorochromic behavior, the color reversibly changes white to yellow so does emission maximum 470 538 nm. The stepwise fluorescence change was monitored by fluorospectroscopy which demonstrated gradual shift of when sequential compression exerted. In order gain deep insights into mechanism, both phases are structurally characterized.

Metal–organic frameworks (MOFs) based on Ti-oxo clusters (Ti-MOFs) represent a naturally self-assembled superlattice of TiO2 nanoparticles separated by designable organic linkers as antenna chromophores, epitomizing promising platform for solar energy conversion. However, despite the vast, diverse, and well-developed Ti-cluster chemistry, only scarce number Ti-MOFs have been documented. The synthetic conditions most Ti-based are incompatible with those required MOF crystallization, which has...

A bismuth-based metal–organic framework (MOF), [Bi(BTC)(H2O)]·2H2O·MeOH denoted CAU-17, was synthesized and found to have an exceptionally complicated structure with helical Bi–O rods cross-linked by 1,3,5-benzenetricarboxylate (BTC3–) ligands. Five crystallographically independent 1D channels including two hexagonal channels, rectangular one triangular channel accessible diameters of 9.6, 3.6, 3.4 Å, respectively. The is further twinning. Rod-incorporated MOF structures typically underlying...

Intercalation of ions in electrode materials has been explored to improve the rate capability lithium batteries and supercapacitors, due enhanced diffusion Li+ or electrolyte cations. Here, we describe a synergistic effect between crystal structure intercalated ion by experimental characterization ab initio calculations, based on more than 20 nanomaterials: five typical cathode together with their alkali metal intercalation compounds A–M–O (A = Li, Na, K, Rb; M V, Mo, Co, Mn, Fe–P). Our...

A series of highly porous isoreticular lanthanide-based metal–organic frameworks (LnMOFs) denoted as SUMOF-7I to SUMOF-7IV (SU = Stockholm University; Ln La, Ce, Pr, Nd, Sm, Eu, and Gd) have been synthesized using tritopic carboxylates the organic linkers. The SUMOF-7 materials display one-dimensional pseudohexagonal channels with pore diameter gradually enlarged from 8.4 23.9 Å, a result increasing sizes structures solved by single crystal X-ray diffraction or rotation electron (RED)...

A series of metal-organic frameworks representing a non-interpenetrated framework analogue MOF-14 have been synthesized by using two different linkers, 4,4',4''-benzene-1,3,5-triyl-benzoic acid (H(3)BTB) and 4,4'-bipyridine (Bpy). Interestingly, the transition metal ions in paddle-wheel clusters could be exchanged other via direct single-crystal to transformation. This post-synthesis route can used for synthesis isomorphous that cannot obtained synthesis.

An anisotropic high-spin qubit with long coherence time could scale the quantum system up. It has been proposed that Grover's algorithm can be implemented in such systems. Dimetallic aza[80]fullerenes M2@C79N (M = Y or Gd) possess an unpaired electron located between two metal ions, offering opportunity to manipulate spin(s) protected cage for information processing. Herein, we report crystallographic determination of Gd2@C79N first time. This molecular magnet a collective ground state (S...

Two families of metal–organic frameworks (MOFs), MIL-88 and MIL-101 built by trinuclear transition metal (TM) clusters (TM = Cr, Fe, or Sc), have been known for several years, but their syntheses are often reported separately. In fact, these MOFs polymorphs, framework isomers: they assembled from the same secondary building units organic linkers, connectivity components differs. Here we report first time synthesis vanadium MOF MIL-88B(V) compare its parameters to those MIL-47(V) recently...

Developing an efficient strategy to enrich the low abundance phosphopeptides before mass spectrometry detection is a vital preprocessing step in phosphoproteomics. In this work, we synthesized adenosine phosphate-Ti4+ functionalized magnetic mesoporous graphene oxide nanocomposite (denoted as MG@mSiO2-ATP-Ti4+) selectively extract phosphorylated peptides from complex biological samples based on immobilized metal ion affinity chromatography (IMAC). Mesoporous silica was coated substrate...

Controlled self-assembly of amphiphilic cyclodextrin is always a challenging topic in the field supramolecular chemistry, since it provides spontaneous generation well-defined aggregation with functional host sites great potential applications drug-carrier systems. β-Cyclodextrin modified an anthraquinone moiety (1) was successfully synthesized. In aqueous solution, 1 found able to self-assemble into vesicles, which characterized detail by TEM, SEM, EFM, and DLS. The formation mechanism...

Adsorption-driven separation of CO2 from flue gas has the potential to cut cost for carbon capture and storage. Among porous physisorbents, metal–organic frameworks (MOFs) are a class promising candidates storage owing their extraordinarily high specific surface areas pore volumes, predesigned structures. Here, we report three interpenetrated MOFs composed Zn4O clusters rigid dicarboxylate anions, namely SUMOF-n (SU = Stockholm University; n 2, 3, 4). All possess small pores two different...

Abstract A directed heterogeneous C−H activation/halogenation reaction catalyzed by readily synthesized Pd@MOF nanocatalysts was developed. The Pd catalysts used were a novel and environmentally benign Fe‐based metal–organic framework (MOF) (Pd@MIL‐88B‐NH 2 (Fe)) the previously developed Pd@MIL‐101‐NH (Cr). Very high conversions selectivities achieved under very mild conditions in short times. wide variety of directing groups, halogen sources, substitution patterns well tolerated, valuable...

We have studied the half-Heusler compound TbPdBi through resistivity, magnetization, Hall effect and heat capacity measurements. A semimetal behavior is observed in its normal state transport properties, which characterized by a large negative magnetoresistance below 100 K. Notably, we find coexistence of superconductivity antiferromagnetism this compound. The superconducting transition appears at 1.7 K, while antiferromagnetic phase takes place 5.5 upper critical field $H_{c2}$ shows an...

On account of their inherent reactive properties, radical reactions play an important role in organic syntheses. The booming photochemistry provides a feasible approach to trigger the generation intermediates reaction processes. Thus, developing effective photocatalysts becomes key step reactions. In this work, triphenylamine moiety with photoactivity is successfully embedded highly porous and stable metal–organic framework (MOF), obtained MOF, namely, Zr-TCA, naturally displays photoactive...

Abstract Methylammonium lead iodide (MAPbI 3 ) is a kind of perovskite material, which can effectively absorb photons in sunlight, with an adjustable band gap and relatively stable performance. Aiming at the problem photoelectric conversion efficiency solar cells, this paper proposes cell MAPbI as absorption layer. The device structure adopts trans good stability low cost, hole transport layer poly(3,4‐ethylenedioxythiophene):polystyrene sulfonate(PEDOT:PSS) has electrical properties...

Stable and easily synthesized metal–organic framework MIL-88B-NH2 represents an attractive support for catalysts employed in oxidation reactions, which are typically performed under relatively harsh conditions. However, MIL-88B-NH2, the thermodynamic polymorph of more popular MIL-101-NH2, has been rarely catalytic applications because a difficult impregnation process caused by flexible nature framework. We report herein new catalyst denoted Pd@MIL-88B-NH2 (8 wt % Pd), first example metallic...