The reaction between equimolar amounts of 3,4-epoxyperfluorooxolane and 3,3′,4,4′-tetraaminobiphenyl provided a new fluorine-containing diamino derivative of furoquinoxaline, namely, 6-(3,4-diaminophenyl)-1,1,3,3-tetrafluoro-1,3-dihydro-furo[3,4-b]quinoxaline. Its reactions with 3,4-epoxyperfl...

Nowadays, waterborne (WB) eco-friendly coatings have received greater attention as an alternative to solvent-borne coatings due to their nontoxic and nonflammable behavior along with the emission of lesser or no (volatile organic compounds) VOCs. Several WB coatings such as WB alkyds, water redu...

A tandem Pd2(dba)3 participated C–C bond cleavage of O-bromophenyl cyclobutanone derivatives/Michael addition reaction sequence was realized. We disclosed the first intramolecular C–Br bond triggered ring opening reaction of arylcyclobutanones, distinct from related reports in which the reacti...

The title compound 3-(3-Bromophenyl)-5-(4-methoxyphenyl) isoxazole was characterized by spectral studies (HRMS, IR, 1H NMR and 13C NMR), single crystal X-ray diffraction studies, molecular docking and Hirshfeld surface analysis. The molecule, C16H12BrNO2 crystallizes in Monoclinic lattice with s...

Human aldose reductase (AKR1B1, AR) is a key enzyme of the polyol pathway, catalyzing the reduction of glucose to sorbitol at high glucose concentrations, as those found in diabetic condition. Indeed, AKR1B1 overexpression is related to diabetes secondary complications and, in some cases, with c...

Spiny restharrow root (Ononis spinosa L.) and its preparations are mainly used for the treatment of urinary infections or bladder stones in numerous countries. Spiny restharrow root is rich in isoflavonoids (formononetin, calycosin and pseudobaptigenin), pterocarpans (medicarpin and maackiain) a...

The metal-free phthalocyanine 2 was synthesized from the 4,5-bis(1,4,7,10-tetraoxacyclododecan-2-ylmethoxy)phthalonitrile 1 in the presence of a strong base in n-pentanol. The synthesis of metallo derivatives [Ni(II), Co(II), Cu(II)] of phthalocyanines obtained from corresponding phthalonitrile ...

Chromogenic benzo-12-crown-4, benzo-13-crown-4 and benzo-14-crown-4 ethers have been compared with monoaza-12-crown-4 and monoazal-13-crown-4 ethers. Of these compounds, monoaza-13-crown-4 exhibited the best analytical characteristics toward the selective determination of lithium. KexLi/KexNa wa...

A macrocyclic bis-urea receptor (L1) and two acyclic bis-urea analogues (L2 and L3) have been synthesized. The crystal structure of L1 was obtained. The experimental results show that the receptor L1 has high selectivity to H2PO4−. Meanwhile, compared with the acyclic receptors L2 and L3, L1 has...

Seven new dyes – aza-12-crown-4 ether derivatives containing either one or two anthraquinone substituents - were synthesized and their spectroscopic and acid-base properties are discussed in this work. The number, location, type and class of the nitrogen groups in macrocyclic ring differentiate...

The synthesis and X-ray crystal structures of eight transition metal complexes of 12-crown-4 are reported. These are: [Mn(H2O)6][Mn(12-crown-4)2]2(ClO4)6·6H2O (1), [Ni(H2O)6](ClO4)2·12-crown-4 (2), [Zn(12-crown-4)2]2[Zn(H2O)6](ClO4)6·(12-crown-4)2·(H2O)2 (3), [Mn(12-crown-4)2][MnCl4]·H2O (4...

A reversible optical membrane sensor for detection of Hg(II) was developed based on the colorimetric determination of tetrathia-12-crown-4-Hg(II), incorporating chromoionophore I (ETH5294) as a lipophilic H+-selective indicator, and sodium tetra phenyl borate (NaTPB) as a lipophilic anionic site...

Ester-type bis-12-crown-4 ethers with flexible crown rings were synthesized and found to have a good selective complexing ability to sodium cation when a suitable linking moiety was present.

Sodium-selective PVC membrane electrodes based on newly synthesized bis(crown ether)s containing 12-crown-4 moities were prepared using o-nitrophenyloctylether as a plasticizer of the PVC membrane. The selectively coefficients for alkali metal ions kNaM, were sufficiently small, and markedly dep...

Reaction of (C5Me5)2Lu(Me)(μ-Me)Li(THF)3 (2) with excess 12-crown-4 affords the new separated ion pair complex, [Li(12-crown-4)2][(C5Me5)2LuMe2] (3), in excellent yield. This complex reacts with 2,6-diisopropylaniline and phenylacetylene to give the methyl amide complex [Li(12-crown-4)2][(C5Me5...

Coordination polymers (CP) are a new class of hybrid materials consisting of metal clusters connected by organic ligands and forming structures along one, two or three dimensions. Three Cu2+ coordination polymers Cu(1,3-BDC).3H2O, Cu(1,4-BDC), and Cu(5-NH2-1,3-BDC) (BDC = benzenedicarboxylic) we...

A high triplet energy crosslinkable hole transport material was developed for solution processed blue phosphorescent organic light-emitting diodes. A high triplet energy core structure, 3,3-di(9H-carbazol-9-yl)biphenyl, was functionalized with a vinylbenzene crosslinking unit to form the crossli...

Novel blue light-emitting diodes (LEDs) based on nanostructured ZnSe/ZnS multilayer thin films are demonstrated. By introducing a thin MgO film as an interfacial modification layer, the performance of the devices have been significantly improved. Both photoluminescence and electroluminescence in...

It has been challenging to develop deep blue organic molecular fluorescent emitters with CIE y (y ≤ 0.08) based on triplet-triplet annihilation (TTA). Here, we report facilely available dianthracenylphenylene-based emitters, which have a 3,5-di(4-t-butylphenyl)phenyl moiety at the one end and 4...

Ag core–TiO2 shell ([email protected]2) structured nanoparticles with Ag to TiO2 molar ratio of 1:1.7 were synthesized using one pot synthesis method and post calcination was carried out at 450 °C for 3 h to convert it from amorphous to crystalline form. The Ag core and TiO2 shell formation wa...