Two 3d-4f heterometallic coordination polymers {[Ln(PDA)3Mn1.5(H2O)3].3.25H2O}infinity with 1D channels were synthesized under hydrothermal conditions (PDA = pyridine-2,6-dicarboxylic acid; Ln Eu (1); Tb (2)). The emission intensities of 1 and 2 increased significantly upon addition Zn2+, while the introduction other metal ions caused intensity to be either unchanged or weakened. case implies that may used as luminescent probes Zn2+.

A nanotubular 3D heterometallic zeolitic polymer, {[Yb(PDA)3Mn1.5(H2O)3].1.5H2O}n (2), was designed and synthesized by simply tuning the amount of coordinated water on Mn ion in molecular ladder polymer {[Yb(PDA)3Mn1.5(H2O)6].6H2O}n (1). 1 2 were structurally magnetically characterized. The molecules capsulated within nanotube arrayed into an unprecedented "water" pipe. robust retained intact networks after removal guest trapped nanotubes even methanol replaced water.

Large pores comprising 48-membered rings characterize the isostructural lanthanide–transition-metal coordination polymers [{[Ln(dipic)3Mn1.5(H2O)3]⋅n H2O}∞], H2dipic=pyridine-2,6-dicarboxylic acid; Ln=Pr, n=2 (shown here); Ln=Gd, n=3.5; Ln=Er, n=3. Many water molecules are trapped in nanotubular structure, and framework remains intact on removal of uncoordinated molecules. Supporting information for this article is available WWW under...

Abstract Serotonin (5‐hydroxytryptamine, HT), a neurotransmitter, and its main metabolite 5‐hydroxyindole‐3‐acetic acid (HIAA) are biomarkers for carcinoid tumors. They can be quantitatively detected by new luminescent sensor based on water stable lanthanide metal–organic framework (Ln‐MOF). This Ln‐MOF features (3,4)‐connected topology containing 1D channels occupied lattice molecules. Luminescent studies reveal that high luminescence quenching efficiency occurs upon the addition of HT...

Highly selective separation and/or purification of acetylene from various gas mixtures is a relevant and difficult challenge that currently requires costly energy-intensive chemisorption processes. Two ultramicroporous metal-organic framework physisorbents, NKMOF-1-M (M=Cu or Ni), offer high hydrolytic stability benchmark selectivity towards versus several gases at ambient temperature. The performance attributed to their exceptional binding affinity as revealed by modelling experimental...

Two lanthanide zeolite-like metal-organic frameworks (Ln-ZMOFs) with rho topology, Tb-ZMOF and Eu-ZMOF, were constructed by self-assembly of a 4-connected molecular building block bipyridine-dicarboxylate ligand. Varying the Tb(3+) Eu(3+) ratio during synthesis afforded three mixed-crystal isostructural MZMOFs variable Eu:Tb stoichiometry. Fluorescence studies revealed that methanol suspension one these mixed crystals, MZMOF-3, exhibits selective detection lysophosphatidic acid (LPA),...

A new bimetallic lanthanide metal-organic framework [Eu0.5Tb1.5(FDA)3] (H2FDA = 2,5-furandicarboxylic acid) exhibits high-sensitivity luminescent sensing of mixtures organic compounds and can work over a large range volume ratios. The self-calibrating behavior this color-gradient sensor is presented for the first time. As service to our authors readers, journal provides supporting information supplied by authors. Such materials are peer reviewed may be re-organized online delivery, but not...

Two novel isostructural lanthanide metal-organic frameworks (Ln-MOFs), [Ln2(BPDC)(BDC)2(H2O)2]n (Ln = Eu (1) and Tb (2)), have been successfully synthesized via a mixed ligand approach using 2,2'-bipyridine-3,3'-dicarboxylic acid (H2BPDC) 1,4-benzenedicarboxylic (H2BDC) under hydrothermal conditions. Structural analysis shows that two ions are 4-fold linked by κ(1)-κ(1)-μ2 carboxylates from BDC(2-) the other κ(2)-κ(1)-μ2 BPDC(2-) to form binuclear core. The units further connected build...

Two new isostructural 3D lanthanide metal–organic frameworks (Ln-MOFs) {[Ln4(μ3-OH)4(BPDC)3(BPDCA)0.5(H2O)6]ClO4·5H2O}n (Ln = Tb (1) and Gd (2), BPDC2– 3,3′-dicarboxylate-2,2′-dipyridine anion BPDCA2– biphenyl-4,4′-dicarboxylate anion) based on cubane-shaped [Ln4(μ3-OH)4]8+ clusters were successfully synthesized fully characterized. There are two kinds of micropores with dimensions 3.0 × 7.0 Å2 along the b-axis 4.5 5.5 c-axis in cationic framework. Ln-MOF 1 exhibits an intensive green...

Enzyme immobilization has been demonstrated to be a favorable protocol promote industrialization of biomacromolecules. Despite tremendous efforts develop new strategies and materials realize this process, maintaining enzyme activity is still formidable challenge. Herein we created sacrificial templating method, using metal-organic frameworks (MOFs) as templates construct hollow covalent organic framework (COF) capsules for encapsulation. This strategy can provide capacious microenvironment...

Multitopic organic linkers can provide a means to organize metal cluster nodes in regular three-dimensional array. Herein, we show that isonicotinic acid N-oxide (HINO) serves as the linker formation of metal-organic framework featuring Dy2 single-molecule magnets nodes. Importantly, guest solvent exchange induces reversible single-crystal transformation between phases Dy2(INO)4(NO3)2⋅2 (solvent=DMF (Dy2-DMF), CH3CN (Dy2-CH3CN)), thereby switching effective magnetic relaxation barrier...

Two 24-nuclear lanthanide clusters, and were obtained structurally characterized. Magnetic investigations reveal that exhibits the largest entropy change (-ΔS(m)) of 46.12 J kg(-1) K(-1) for ΔH = 7 T in all reported molecular single-molecule magnet behaviour is observed .

Zeolites, as one of the most important porous materials, are widely utilized in sorbents, catalysis, and ion-exchange fields. However, multi-functional lanthanide-zeolites constructed exclusively by lanthanide ions oxygen linkers to our knowledge unknown hitherto. Herein, we, for first time, report unique structure multifunctions zeolites (1·Gd, 1·Tb, 1·Dy), featuring 60 nuclear [Ln60] nanocages building blocks ultrastrong alkali-resisting. These compounds possess extremely high stability...

The separation of racemic compounds is important in many fields, such as pharmacology and biology. Taking advantage the intrinsically strong chiral environment specific interactions featured by biomolecules, here we contribute a general strategy developed to enrich chirality into covalent organic frameworks (COFs) covalently immobilizing series biomolecules (amino acids, peptides, enzymes) achiral COFs. Inheriting from immobilized afforded biomolecules⊂COFs serve versatile highly efficient...

Developing new materials for the fabrication of proton exchange membranes (PEMs) fuel cells is great significance. Herein, a series highly crystalline, porous, and stable covalent organic frameworks (COFs) have been developed by stepwise synthesis strategy. The synthesized COFs exhibit high hydrophilicity excellent stability in strong acid or base (e.g., 12 m NaOH HCl) boiling water. These features make them ideal platforms conduction applications. Upon loading with H3 PO4 , (H3 @COFs)...

Abstract Silver nanoparticles were successfully supported on the zeolite‐type metal–organic framework MIL‐101 to yield Ag@MIL‐101 by a simple liquid impregnation method. For first time, conversion of terminal alkynes into propiolic acids with CO 2 was achieved use catalysts. Owing excellent catalytic activity, reaction proceeded at atmospheric pressure and low temperature (50 °C). The porous material is outstanding bifunctional character as it capable simultaneously capturing converting...

Ni-doped MOF-5s were successfully synthesized for the first time via solvothermal crystallization process to enhance hydrostability. Several characterization techniques, including X-ray diffraction (XRD), thermogravimetrical analysis (TGA), scanning electron microscopy (SEM), energy-dispersive spectroscopy instrument (EDS), inductively coupled plasma (ICP), infrared (IR), atomic sorption, diffuse-reflectance UV–vis spectroscopy, and gas sorption measurement, strongly support effective...

A zeolite-like microporous tetrazole-based metal-organic framework (MOF) with 24 nuclear zinc cages was synthesized and characterized. It exhibits high CO(2) adsorption capacity up to 35.6 wt % (8.09 mmol/g) excellent CO(2)/CH(4) selectivity at 273 K/1 bar, being among the highest values known date. Theoretical calculations based on simulated annealing techniques periodic DFT revealed that is predominantly located around inner surface of through multipoint interactions, in particular,...

We present one 3D cationic MOF (1-ClO4), which exhibits high thermal stability and strong alkali resistance. More importantly, it displays fast, selective capture of, acts as a luminescent probe for, pollutant CrO42− by anion exchange. Additionally, 1-ClO4 interesting slow magnetic relaxation behavior at low temperature.

Abstract Green synthesis of crystalline porous materials for energy-related applications is great significance but very challenging. Here, we create a green strategy to fabricate highly olefin-linked pyrazine-based covalent organic framework (COF) with high robustness and porosity under solvent-free conditions. The abundant nitrogen sites, hydrophilicity, well-defined one-dimensional nanochannels make the resulting COF an ideal platform confine stabilize H 3 PO 4 network in pores through...

Photocatalytic water splitting for hydrogen production using sustainable sunlight is a promising alternative to industrial production. However, the scarcity of highly active, recyclable, inexpensive photocatalysts impedes development photocatalytic evolution reaction (HER) schemes. Herein, metal-organic framework (MOF)-template strategy was developed prepare non-noble metal co-catalyst/solid solution heterojunction NiS/Znx Cd1-x S with superior HER activity. By adjusting doping concentration...