Porous Bimetallic Ti-MOFs for Photocatalytic Oxidation of Amines in Air.

A family of microporous titanium-containing metal-organic frameworks (denoted as MTi-CPCDC, M = Mn, Co, Ni) has been synthesized by using a bimetallic [MTi(μ-O)(COO)] cluster and a tritopic carbazole-based organic ligand HCPCDC. MTi-CPCDC are stable and display permanent porosity for N and CO uptake, ranking among the most porous titanium-based metal-organic frameworks. MTi-CPCDC crystals exhibit n-type semiconductor behavior.

A new red phosphor for high time-resolved thermal sensitivity and plant growth.

Luminous materials with a rapid lifetime response have garnered significant interest in sensing technology. In this work, the transition element Mn doped phosphor SrTiO:Mn was synthesized by a traditional high temperature solid phase method. The emission peak of SrTiO:0.

Correction: A robust and porous titanium metal-organic framework for gas adsorption, CO capture and conversion.

Correction for 'A robust and porous titanium metal-organic framework for gas adsorption, CO capture and conversion' by Xuze Pan, , , 2023, , 3896-3906, https://doi.org/10.1039/D2DT03158B.

Highly bifunctional RhP on N,P-codoped carbon for hydrazine oxidation assisted energy-saving hydrogen production.

Highly pure RhP nanoparticles on N,P-codoped carbon were synthesized by a simple "mix-and-pyrolyze" method using one kind of low-cost nucleotide as the carbon, nitrogen and phosphorus source, which exhibits excellent bifunctional activity for the hydrogen reduction and hydrazine oxidation reactions, achieving energy-efficient hydrogen production.

AIEE-active dichlorobenzene and chlorobenzene ratiometric fluorescent probe based on [2.2]paracyclophane.

Two AIEE-active [2.2]paracyclophanyl-based diester and monoester (1a and 1b) were facilely synthesized by one-pot method and applied as ratiometric fluorescent probe to detect dichlorobenzene (DCB) and chlorobenzene (CB). Compared with compound 1b, 1a exhibits high sensitivity and low detection limits for DCB and CB in dichloromethane (DCM), particularly, the detection sensitivities for ortho-dichlorobenzene (o-DCB), meta-dichlorobenzene (m-DCB) and chlorobenzene can be modulated by AIEE behavior with lower detection limits of 23.

Rh-Catalyzed Direct Heteroarylation of Unactivated C(sp)-H with -Heteroaryl Boronates.

Disclosed herein is a rhodium(III)-catalyzed direct heteroarylation reaction between unactivated aliphatic C(sp)-H bonds in 2-alkylpyridines and heteroaryl organoboron reagents. This catalytic protocol is compatible with various heterocyclic boronates containing - and -pyridine, pyrazoles, furan, and quinoline with strong coordination capability. The achievement of this methodology provides an efficient route to build new C(sp)-heteroaryl bonds.

A porous and photoactive Ti-MOF based on a novel tetranuclear [TiTb] cluster.

A robust and porous titanium metal-organic framework (Ti-MOF; LCU-505) has been solvothermally synthesized based on an unprecedented tetranuclear Ti(μ-O)Tb(μ-CHCOO)(HO)(OOC) cluster (abbreviated as [TiTb]) and tritopic 4,4',4''--triazine-2,4,6-triyl-tribenzoic acid ligand (HTATB). LCU-505 shows remarkable water stability and permanent porosity for N and CO gas adsorption. Moreover, LCU-505 demonstrates n-type semiconductor behavior and good photocatalytic activity in the degradation of organic dyes.

Highly enhanced hydrazine oxidation on bifunctional Ni tailored by alloying for energy-efficient hydrogen production.

The low-potential hydrazine oxidation reaction (HzOR) can replace the oxygen evolution reaction (OER) and thus assemble with the hydrogen evolution reaction (HER), consequently achieving energy-saving hydrogen (H) production. Notably, developing sophisticated bifunctional electrocatalysts for HER and HzOR is a prerequisite for efficient H production. Alloying noble metals with eligible non-precious ones can increase affordability, catalytic activity, and stability, alongside rendering bifunctionality.

Mesoporous MOF Based on a Hexagonal Bipyramid Co-Cluster: High Catalytic Efficiency on the Cycloaddition Reaction of CO with Bulky Epoxides.

A mesoporous cobalt-based metal-organic framework (LCU-606) was synthesized based on a hexagonal bipyramid Co(μ-O) cluster and an ,,','-tetrakis-(4-benzoic acid)-1,4-phenylenediamine ligand (HTBAP). LCU-606 featuring large pore diameters of 21.7 Å and exposed Lewis-acid metal sites could serve as an excellent heterogeneous catalyst for CO cycloaddition reaction with various epoxide substrates under mild conditions (1 atm CO, 60 °C, and solvent free).

Recent Progress in Research on [2.2]Paracyclophane-Based Dyes.

In recent years, the [2.2]paracyclophane (PCP) ring has attracted extensive attention due to its features of providing not only chirality and electron-donating ability but also steric hindrance, which reduces intermolecular π-π stacking interactions and thereby improves the fluorescence properties of dyes. To date, some circularly polarized luminescence (CPL)-active small organic molecules based on the PCP skeleton have been reviewed; however, the application of the PCP ring in improving the photophysical properties of fluorescent dyes is still limited, and new molecular design strategies are still required.

A robust and porous titanium metal-organic framework for gas adsorption, CO capture and conversion.

A robust and porous titanium metal-organic framework (Ti-MOF; LCU-402) has been hydrothermally synthesized through combining a tetranuclear TiCa(μ-O)(μ-HO)(HO)(OC-) cluster and a tritopic 1,3,5-benzene(tris)benzoic (BTB) ligand. LCU-402 shows remarkable stability and permanent porosity for CO, CH, CH, CH, and CH gas adsorption. Moreover, LCU-402 as a heterogeneous catalyst can smoothly convert CO under a simulated flue atmosphere into organic carbonate molecules by cycloaddition reactions of CO and epoxides, indicating that LCU-402 might be a promising catalyst candidate in practical applications.

Robust acid-base Ln-MOFs: searching for efficient catalysts in cycloaddition of CO with epoxides and cascade deacetalization-Knoevenagel reactions.

A family of microporous and robust Ln(iii)-based metal-organic frameworks (1-Ln, Ln = Sm, Eu, Gd, Tb, Dy, Ho, Er, Yb) have been obtained using 4,4',4''-nitrilotribenzoic acid (HNTB) in NMP-HCl solvent. Both single-crystal and powder X-ray diffraction analyses demonstrate that 1-Ln are isostructural and possess 3D frameworks with permanent porosity for Ar and CO adsorption. Strikingly, the incorporation of both Lewis acidic lanthanide ions and the basic triphenylamine group into 1-Ln makes them efficient acid-base catalysts for both cycloaddition of epoxides with CO and one-pot cascade deacetalization-Knoevenagel reactions.

Fluorescence Lifetime-Based Luminescent Thermometry Material with Lifetime Varying over a Factor of 50.

Recently, the growing demand for temperature detection is pushing forward the flourishing development of noncontact optical thermometry. Herein, a new red phosphor SrInTaO:Mn (SIT:Mn) was first constructed and systematically investigated. Based on the fairly rapid decline of the lifetime from 0.

Ir nanoclusters/porous N-doped carbon as a bifunctional electrocatalyst for hydrogen evolution and hydrazine oxidation reactions.

One common iridium(III) complex was employed to facilely prepare ultrafine Ir nanoclusters embedded in porous N-doped carbon, which displayed significant bifunctional activity for both hydrogen evolution and hydrazine oxidation under alkaline conditions, enabling energy-efficient hydrogen production.

The synthesis of aryl-heteroaryl derivatives the Rh-catalyzed heteroarylation of arenes and heteroaromatic boronates.

An efficient Rh-catalyzed strategy for constructing aryl-heteroaryl derivatives with removable ketoxime ether auxiliaries direct C-H heteroarylation based on arenes and heteroaromatic boronates has been disclosed. This protocol could tolerate various pyridine, pyrimidine, pyrazole, thiophene, and furan heteroaromatic boronates well, providing the desired products with high reactivities and excellent regioselectivity. The easy synthetic accessibility may offer potential for application in the synthesis of heterocyclic drug molecules containing aryl-heteroaryl motifs.

A series of microporous and robust Ln-MOFs showing luminescence properties and catalytic performances towards Knoevenagel reactions.

A series of microporous Ln(III)-based metal-organic frameworks (1-Ln) have been hydrothermally synthesized using 4,4',4''-nitrilotribenzoic acid (HNTB). Single crystal X-ray diffraction analyses show that 1-Ln are isostructural and have 3D porous frameworks with remarkable stability and permanent porosity for Ar and CO adsorption. In addition, 1-Ln exhibit diverse photoluminescence emissions depending on the nature of lanthanide ions.

Designing a Polyphosphate Polymorph of CsMg(PO) as Host Lattice for Preparing Single Mn-Oxidation Doped Phosphor in the Open Environment.

Within Mn-activated phosphors, the oxidation state of Mn dopant strongly depends on the structural features of the host lattice. This paper reported a new polymorph of CsMg(PO) (CMP) with a complicated three-dimensional (3D) framework of [Mg(PO)] that is constructed by MgO octahedra and 1D infinite [PO] chains. Then we prepared a series of red phosphors CsMg(PO):Mn (CMP:Mn) by high temperature solid state reactions in the open air.

Planar chiral [2.2]paracyclophanyl-based boron fluoride complexes: synthesis, crystal structure and photophysical properties.

Planar chiral [2.2]paracyclophanyl-based boron fluoride complexes (3a-3d) were designed and facilely synthesized. The X-ray structure study, theoretical calculations and CD spectra reveal the intense emission and planar chiral structures of these complexes.

Rh-Catalyzed Direct Heteroarylation of C(sp)-H and C(sp)-H Bonds in Heterocycles with -Heteroaromatic Boronates.

Herein, we disclose a Rh-catalyzed heteroarylation of C(sp)-H and C(sp)-H bonds in heterocycles with organoboron reagents. This protocol displays high efficiency and excellent functional group tolerance. A range of heterocyclic boronates with strong coordinating atoms, including pyridine, pyrimidine, pyrazole, thiophene, and furan derivatives, can be extensively served as the coupling reagents.

Natural DNA-assisted RuP on highly graphitic N,P-codoped carbon for pH-wide hydrogen evolution.

Natural DNA was employed for the first time as a phosphorization agent and carbon source to controllably synthesize a RuP/N,P-codoped carbon composite by a simple "mix-and-pyrolyze" strategy, which displays higher activity for alkaline and acidic HER and neutral activity compared to Pt/C together with outstanding durability.

Rh-Catalyzed C-H (Het)arylation/Vinylation of -2,6-Difluoroaryl Acrylamides.

Rh-catalyzed sp C-H cross-coupling of acrylamides with organoboron reactants has been accomplished using a commercially available -2,6-difluoroaryl acrylamide auxiliary. A broad range of aryl and vinyl boronates as well as a variety of heterocyclic boronates with strong coordinating ability can serve as the coupling partners. This transformation proceeds under moderate reaction conditions with excellent functional group tolerance and high regioselectivity.

Ambient Chemical Fixation of CO Using a Robust Ag Cluster-Based Two-Dimensional Metal-Organic Framework.

Unprecedented double S templated Ag clusters have been stabilized by 5,10,15,20-tetra(4-pyridyl)porphyrin (TPyP-H ) ligands to afford a robust 2D metal-organic framework (Ag27-MOF). This silver cluster-assembled material serves as a highly efficient heterogeneous catalyst for the cyclization of both terminal and internal propargylamines with CO under atmospheric pressure. Density functional theory (DFT) calculations illustrate that the high catalytic activity and broad substrate scope are attributable to the saddle-shaped metallic node in Ag27-MOF, which features an accessible platform with high-density silver atoms as π-Lewis acid sites for activating C≡C triple bonds.

An NHC-CuCl functionalized metal-organic framework for catalyzing β-boration of α,β-unsaturated carbonyl compounds.

A microporous metal-organic framework functionalized with in situ generated NHC-CuCl units (1) has been successfully synthesized from a novel imidazolium-containing ligand. In particular, the MOF 1 can catalyze β-boration of α,β-unsaturated carbonyl compounds, while the isoreticular version of 1 (1-im) modified with only imidazolium moiety cannot. This work demonstrates for the first time the heterogeneous catalysis of NHC-Cu(i)Cl within a MOF solid.

Molecular cloning, expression and characterization of Pekin duck programmed death-1.

Programmed death-1 (PD-1) has a pivotal role in the attenuation of adaptive immune responses and peripheral tolerance. Here we describe the identification of the Pekin duck programmed death-1 orthologue (duPD-1). The duPD-1 cDNA encodes a 283-amino acid polypeptide that has an amino acid identity of 70%, 32% and 31% with chicken, murine and human PD-1, respectively.