The molecular absorption and fluorescence spectra of 2,5-distyrylpyrazine (DSP) in a Shpol'skii matrix at 4 K together with the Raman spectrum of crystalline samples at 298 K have been investigated. The transition to the lowest excited singlet state of Bu symmetry is of π—π* character an...

The single crystal spectra of 2,5-distyrylpyrazine (DSP) were obtained in the frequency region of a demonstrated photochemical activity. Two observed transitions, n-π∗and π-ggp∗, are assigned at 23300 and 25400 cm−1, respectively. The lower energy transition is shown to be responsible for the ...

Solvent-free, photoreactive particles of 2,5-distyrylpyrazine (DSP) monomer were developed by rapid precipitation from an expanding supercritical chlorodifluoromethane solution. DSP polymer particles were produced by solid-state photopolymerization. DSP particles below a critical diameter of abo...

Investigation on electrical conductivity and dielectric properties of manganese (Mn) and vanadium (V) mixed oxides were carried out to study the extrinsic semiconductor behaviour. The XRD pattern shows that Mn–V oxide is multiphase and quantitative phase analysis was performed to determine the ...

Vanadium manganese oxides with Mn content up to 33 at% were synthesized by a low temperature hydrothermal route allowing for the preparation of both anodic and cathodic materials for Li-ion batteries. Low amounts of manganese (below 13 at%) lead to the formation of elongated particles of layered...

Manganese (Mn) addition was found to remarkably relieve the weight gain of the wear-resistant high vanadium cast iron during oxidation at 950 °C. The mechanism of such oxidation behaviour in the associated cast iron was investigated through adding different Mn contents. During oxidation process...

A novelty roasting method with manganese carbonate (MnCO3) as additive was carried out to separate and recover vanadium from high chromium vanadium slag (HCVS) efficiently. Vanadium tailings containing chromium was detoxified by carbon reduction and smelting to form Fe-Cr alloy. The whole proces...

Large single crystals of A2Mn2V2O7F2 (A=Rb, Cs) and Mn2VO4F were grown using a high-temperature (~600 °C) hydrothermal technique. Single crystal X-ray diffraction and powder X-ray diffraction were utilized to characterize the structures, which both possess MnO4F2 building blocks. The A2Mn2V2O7F...

Three new strontium manganese vanadates, Sr2Mn2(V3O10)(VO4) (I), Sr3Mn(V2O7)2 (II), and Sr2Mn(VO4)2(OH) (III), were prepared using a high temperature (580 °C) hydrothermal method with various chloride salts as the mineralizer. Minor differences in the chloride stoichiometry led to significant d...

Manganese vanadate (Mn2V2O7) nanosheets on titanium (Ti) foil are synthesized by a cation-exchange method using sodium vanadate nanowires as the precursor. By varying the cation-exchange time in manganese acetate (Mn(CH3COO)2) aqueous solution, the tunable morphologies and chemical components of...

Intake of food containing high levels of selenium (Se) poses a safety risk to human health. Sulfur (S) fertilizer exerts different regulatory effects on Se uptake in crops. In this study, field experiments were conducted in 2012–2013 and 2013–2014 to clarify the effects of different S species ...

Selenite (Se (IV)) and selenate (Se (IV)) have recently been demonstrated to be equally effective in inhibiting mercury (Hg) phytotoxicity to plants. This assertion is still unclear. In this study, we aimed to explore the potential effects of Se species (Se4+ and Se6+) on the inhibition of the m...

P2Y1 receptors play an essential role in inhibitory neuromuscular transmission in the gastrointestinal tract. The signalling pathway involves the opening of small conductance calcium activated potassium-channels (Kca2 family) that results in smooth muscle hyperpolarization and relaxation. Inorga...

SummaryPresent in all realms of life, dinucleoside tetraphosphates (Np4Ns) are generally considered signaling molecules. However, only a single pathway for Np4N signaling has been delineated in eukaryotes, and no receptor that mediates the influence of Np4Ns has ever been identified in bacteria....

Here, we report the synthesis of original hydrocarbon/perfluorocarbon mixed chain azides for surface post-functionalization. The use of mixed side chain allows to get fluorine properties with reduced amount of fluorine. The synthetized azide are grafted on surface using the Huisgen reaction. Pos...

In this report, we have successfully tuned the selectivity and sensitivity of an anion receptor L1 by substituting electron withdrawing natured fluorine atoms directly on to the rim of the phenyl ring. Despite the fact that, we have two electron withdrawing natured nitro substituents on the othe...

Fluorine-containing amphophilic polymers, as well as star polymers, have shown extremely abundant self-assembled morphologies because of microphase separation within the assemblies. Taking advantage of these characteristics, we prepared a series of ABC miktoarm star terpolymers with poly(ethylen...

Difluoroacetyl azide, CHF2C(O)N3, has been synthesized and characterized. The azide decomposes slowly at room temperature (300 K) into N2 and difluoromethyl isocyanate CHF2NCO, which has also been isolated as neat substance and fully characterized. The elusive nitrene intermediate CHF2C(O)N in t...

Partially fluorinated triazole derivatives were synthesized through anodic fluorination of alkynes having arylthio group and following Cu(I)-catalyzed azide-alkyne cycloaddition (CuAAC) with benzyl azide. The other route toward the fluorinated triazoles, namely the anodic fluorination of triazol...

The burn rate of 5–80-μm-thick cryogenic films of fluorine azide was determined by schlierern photography to be 1.6 ± 0.2 mm/μs. This rate was found to be strongly influenced by the presence of N2F2, but less so by the presence of CO2. By analogy with the results from the gas-phase decomposi...