Two Co(II) Isostructural Bifunctional MOFs via Mixed-Ligand Strategy: Syntheses, Crystal Structure, Photocatalytic Degradation of Dyes, and Electrocatalytic Water Oxidation.

The solvothermal reactions involving cobalt ions with 5-methylisophthalic acid (HMIP) and 1,3-bis(2-methylimidazol)propane (BMIP) yielded two cobalt(II) organic frameworks: {[Co(MIP)(BMIP)]·1/2DMA} () and {[Co(MIP)(BMIP)]·(EtOH)·HO]} () where DMA represents N,N-dimethylacetamide and EtOH signifies ethyl alcohol. Single-crystal X-ray diffraction analyses reveal that and possess an isomorphic structure, featuring a unique 2-fold interpenetration of 3D frameworks in a parallel manner. Notably, both and demonstrate remarkable performance in electrocatalytic oxygen evolution reactions and exhibit exceptional photocatalytic degradation capabilities against a model comprising three distinct dyes: rhodamine B, methyl orange, and methyl blue.

The Asymmetric Total Synthesis of the Female-Produced Sex Pheromone of the Tea Tussock Moth.

The tea tussock moth is a pest that damages tea leaves, affecting the quality and yield of tea and causing huge economic losses. The efficient asymmetric total synthesis of the sex pheromone of the tea tussock moth was achieved using commercially available starting materials with a 25% overall yield in 11 steps. Moreover, the chiral moiety was introduced by Evans' template and the key C-C bond construction was accomplished through Julia-Kocienski olefination coupling.

Enhancing Electrocatalytic Water Oxidation of NiFe-LDH Nanosheets via Bismuth-Induced Electronic Structure Engineering.

The design and synthesis of high-efficiency electrocatalysts are of great practical significance in electrocatalytic water splitting, specifically in accelerating the slow oxygen evolution reaction (OER). Herein, a self-supported bismuth-doped NiFe layered double hydroxide (LDH) nanosheet array for water splitting was successfully constructed on nickel foam by a one-step hydrothermal strategy. Benefiting from the abundant active sites of two-dimensional nanosheets and electronic effect of Bi-doped NiFe LDH, the optimal BiNiFe LDH electrocatalyst exhibits excellent OER performance in basic media.

Ratiometric Sensing of Intracellular pH Based on Dual Emissive Carbon Dots.

Accurate monitoring of intracellular pH in living cells is critical for developing a better understanding of cellular activities. In the current study, label-free carbon dots (p-CDs), which were fabricated using a straightforward one-pot solvothermal treatment of p-phenylenediamine and urea, were employed to create a new ratiometric pH nanosensor. Under single-wavelength excitation (λ = 500 nm), the p-CDs gave dual emission bands at 525 and 623 nm.

A DFT/TDDFT Investigation on Fluorescence and Electronic Properties of Chromone Derivatives.

The development of quick and precise detection technologies for active compounds in vivo is critical for disease prevention, diagnosis and pathological investigation. The fluorescence signal of the fluorophore usually defines the probe's sensitivity to the chemical being examined. Many natural compounds containing flavone and isoflavone scaffolds exhibit a certain amount fluorescence, albeit with poor fluorescence quantum yields.

Highly efficient red-emitting carbon dots as a "turn-on" temperature probe in living cells.

Nanothermometers, which can precisely detect the intracellular temperature changes, have great potential to solve questions concerning the cellular processes. Thus, the temperature sensors that provide fluorescent "turn-on" signals in the biological transparency window are of highly desirable. To meet these criteria, this work reported a new "turn-on" carbon dot (CD)-based fluorescent nanothermometry device for sensing temperature in living cells.

A new type of zinc ion hybrid supercapacitor based on 2D materials.

Zinc ion hybrid supercapacitors (ZICs) are truly promising competitors in prospective extensive electrochemical energy storage fields due to their cost-effectiveness, environmentally friendly nature, inherent security, and satisfying gravimetric energy density. Thus, several investigation endeavors have been dedicated to the construction and exploitation of high-performance ZICs. However, the exploitation of ZICs is still in its preliminary stage and there are many problems that need to be overcome before their potential can be fully realized.

N-{2-[(2-chlorothieno[3,2-d]pyrimidin-4-yl)amino]ethyl}-3-methoxybenzamide: design, synthesis, crystal structure, antiproliferative activity, DFT, Hirshfeld surface analysis and molecular docking study.

The compound -{2-[(2-chlorothieno[3,2-d]pyrimidin-4-yl)amino]ethyl}-3-methoxybenzamide () was synthesized by the condensation of 3-methoxybenzoic acid () with -(2-chlorothieno[3,2-d]pyrimidin-4-yl)ethane-1,2-diamine (). This intermediate was prepared from methyl 3-aminothiophene-2-carboxylate () by the condensation with urea, chlorination with phosphorus oxychloride and then condensation with ethane-1,2-diamine. The crystal structure of the title compound was determined and the crystal of the title compound belongs to the tetragonal system, space group with  = 9.

Correction: Formic acid catalyzed isomerization of protonated cytosine: a lower barrier reaction for tautomer production of potential biological importance.

Correction for 'Formic acid catalyzed isomerization of protonated cytosine: a lower barrier reaction for tautomer production of potential biological importance' by Lingxia Jin et al., Phys. Chem.

{2-[2-(Isopropyl-amino)-ethyl-imino-meth-yl]-5-meth-oxy-phenolato}(thio-cyanato--κN)nickel(II).

In the title mononuclear complex, [Ni(C(13)H(19)N(2)O(2))(NCS)], the Ni(II) ion is coordinated by one phenolate O atom, one imine N atom, and one amine N atom of a 2-[2-(isopropyl-amino)-ethyl-imino-meth-yl]-5-meth-oxy-phenolate Schiff base ligand, and by one N atom of a thio-cyanate ligand, forming a slightly distorted square-planar geometry.

Bis{1-[3-(diethyl-ammonio)-propyl-imino-meth-yl]naphthalen-2-olato}nickel(II) dinitrate.

The asymmetric unit of the title compound, [Ni(C(18)H(24)N(2)O)(2)](NO(3))(2), consists of one half of the centrosymmetric nickel(II) complex cation and a nitrate anion. The Ni(II) atom, lying on an inversion center, is four-coordinated by the phenolate O atoms and imine N atoms of two Schiff base ligands, forming a square-planar geometry. The O- and N-donor atoms are mutually trans.

Bis[2-(cyclo-pentyl-imino-meth-yl)-5-meth-oxy-phenolato]copper(II).

The title compound, [Cu(C(13)H(16)NO(2))(2)], is a mononuclear copper(II) complex derived from the Schiff base ligand 2-(cyclo-pentyl-imino-meth-yl)-5-meth-oxy-phenol and copper acetate. The Cu(II) atom is four-coordinated by the phenolate O atoms and imine N atoms from two Schiff base ligands, in a highly distorted square-planar geometry. The O- and N-donor atoms are mutually trans and the dihedral angle between the two benzene rings is 55.

Dibromido{2-[1-(cyclo-propyl-imino)-eth-yl]pyridine}-zinc(II).

In the title compound, [ZnBr(2)(C(10)H(12)N(2))], the Zn(2+) ion is coordinated by the N,N'-bidentate Schiff base ligand and two bromode ions in a distorted tetra-hedral arrangement. The dihedral angle between the pyridine and the cyclo-propyl rings is 95.4 (8)°.

N'-[1-(2-Hy-droxy-phen-yl)ethyl-idene]-2-meth-oxy-benzohydrazide.

There are two independent mol-ecules in the asymmetric unit of the title compound, C(16)H(16)N(2)O(3), in which the dihedral angles between the two aromatic rings are 13.0 (3) and 6.4 (3)°.

4-Hy-droxy-N'-[1-(2-hy-droxy-phen-yl)ethyl-idene]benzohydrazide.

In the title compound, C(15)H(14)N(2)O(3), there is an intra-molecular O-H⋯N hydrogen bond and the dihedral angle between the two aromatic rings is 13.9 (3)°. In the crystal structure, mol-ecules are stabilized by inter-molecular O-H⋯O and N-H⋯O hydrogen bonds.

N'-(3-Eth-oxy-2-hydroxy-benzyl-idene)-4-hydr-oxy-3-methoxy-benzohydrazide monohydrate.

In the title compound, C(17)H(18)N(2)O(5)·H(2)O, the dihedral angle between the two aromatic rings is 7.86 (7)° and an intra-molecular O-H⋯N hydrogen bond is observed. In the crystal structure, mol-ecules are linked into a three-dimensional network by inter-molecular O-H⋯O and N-H⋯O hydrogen bonds.

N'-(4-Hydr-oxy-3-methoxy-benzyl-idene)-4-methoxy-benzohydrazide monohydrate.

In the title compound, C(16)H(16)N(2)O(4)·H(2)O, the dihedral angle between the two aromatic rings is 19.6 (2)°. In the crystal structure, mol-ecules are linked into a three-dimensional network by inter-molecular N-H⋯O, O-H⋯N and O-H⋯O hydrogen bonds.

N'-(5-Bromo-2-hydr-oxy-3-methoxy-benzyl-idene)-4-hydr-oxy-3-methoxy-benzohydrazide dihydrate.

In the title compound, C(16)H(15)BrN(2)O(5)·2H(2)O, the dihedral angle between the two aromatic rings is 2.9 (2)° and an intra-molecular O-H⋯N hydrogen bond is observed. One of the water mol-ecule is disordered over two positions, with occupancies of 0.

2-Meth-oxy-N'-(2-methoxy-benzyl-idene)benzohydrazide.

The title Schiff base compound, C(16)H(16)N(2)O(3), was derived from the condensation of 2-methoxy-benzaldehyde with 2-methoxy-benzohydrazide in an ethanol solution. The dihedral angle between the two aromatic rings is 87.5 (3)°.

4-Chloro-N'-(2-hydroxy-benzyl-idene)benzohydrazide monohydrate.

The asymmetric unit of the title compound, C(14)H(11)ClN(2)O(2)·H(2)O, contains a Schiff base mol-ecule and a water mol-ecule of crystallization. The dihedral angle between the two aromatic rings is 27.3 (4)°.

N'-(2-Hydroxy-benzyl-idene)-2-methoxy-benzohydrazide monohydrate.

In the title compound, C(15)H(14)N(2)O(3)·H(2)O, the Schiff base mol-ecule is approximately planar, with a dihedral angle between the two aromatic rings of 10.2 (3)°. The mol-ecular structure is stabilized by O-H⋯N and N-H⋯O hydrogen bonds.

N'-(5-Bromo-2-methoxy-benzyl-idene)-2-hydroxy-benzohydrazide.

The title Schiff base compound, C(15)H(13)BrN(2)O(3), is derived from the condensation of 5-bromo-2-methoxy-benzaldehyde with 2-hydroxy-benzohydrazide in an ethanol solution. The dihedral angle between the two aromatic rings is 6.9 (9)°.