Hydrogen bonded liquid crystal complexes synthesized from mesogenic 4-octyloxy benzoic acid (8OBA) and some non-mesogenic dicarboxylic acids {HOOC(CH2)nCOOH, n = 4, 7 and 8}; referred as ADA/8OBA (n = 4, Adipic acid), AZA/8OBA (n = 7, Azelaic acid) and SEA/8OBA (n = 8, Sebacic acid) are reported...

From extraction experiments and γ-activity measurements, the extraction constant corresponding to the equilibrium Tl+ (aq) + 1·Cs+ (nb) ⇔ 1·Tl+ (nb) + Cs+ (aq) taking place in the two–phase water–nitrobenzene system (1 = 1,3-alternate-25,27-bis(1-octyloxy)calix[4]arene-crown-6; aq = aqueous...

Two novel organic dyes containing hydroxy and octyloxy substituents onto a phenothiazine skeleton were synthesized and their effects on the photovoltaic performance were studied. Hydroxy acts as an ancillary anchoring unit along with the carboxylic group, while the phenothiazine modified moiety ...

Liquid crystalline (LC) materials have the ability to transfer their long range orientation order in the dispersed materials such as nanoparticles and various colloids. ZnO nanoparticles have wide variety of applications and influence the birefringence properties of liquid crystalline molecules....

An emulsion interface materialization method was used to obtain amphiphilic silica Janus nanoparticles. Reducing the photosynthesis of aquatic organisms after water pollution. PW12O403− was introduced onto Janus particles by ion exchange, and an amphiphilic particle emulsion catalyst (PWO-J) was...

Photophysical properties of monocyano- (2-, 3-, and 4-cyano) and dicyano- (3,4-, 3,5-, 2,3-, 2,4-, 2,5-, and 2,6-dicyano) anilines are investigated by fluorescence measurements. All the monocyanoanilines are virtually nonfluorescent in water (quantum yield

The design, synthesis and photophysical evaluation of 1.Tb.Na, a Tb(III)-cyclen-based sensor, possessing a phenyl iminodiacetate-based receptor, for the selective detection of Cu(II) and Hg(II) ions in water is demonstrated. Sensitisation of the Tb(III) 5D4 excited state was achieved by excitati...

This paper describes the synthesis, radiopharmaceutical preparation and biological distribution of a series of new substituted acetanilido and aliphatic iminodiacetic acid derivatives. The biological distribution of these 99mTc-labelled compounds was studied in mice at 30 min after parenteral ad...

Polystyrene–divinylbenzene copolymer functionalized with copper–iminodiacetate complex was prepared in situ for the capillary electrochromatographic separation of amino acids and oligopeptides. The steps included silanization of the fused-silica capillary column, functionalization, polymerizat...

The combination of the polycarboxylic ligand N-(4-carboxy-benzyl)iminodiacetic acid (LH3) with rare earth (RE) chlorides under hydrothermal conditions leads to the formation of 1D cationic coordination polymers formulated as {[RE(LH2)2(H2O)4]Cl}n [where RE = Y (1), Eu (2), Tb (3) and Yb (4)]. Al...

The synthesis of a monomer with diethyl iminodiacetate groups was investigated in order to obtain complexing copolymers. Copolymers of N-acryloyl diethyl iminodiacetate with acrylamide and acrylic acid were synthetized by a radical mechanism using 2,2′-azobisisobutyronitrile (AIBN) as initiator...

Gas-phase reactions of several acylium and thioacylium ions, that is H2C=N-C+=O, H2C=N-C+=S, O=C=N-C+=O, S=C=N-C+=O, H3C-C+=O, and (CH3)2N-C+=O, with both a model isocyanate and isothiocyanate, that is, C2H5-N=C=O and C2H5-N=C=S, were investigated using tandem-in-space pentaquadrupole mass spect...

The NH- and α-CH-insertion reactions of tosyl isocyanate with N-monosubstituted and N,N-disubstituted trifluoromethyl-containing enaminones have been studied. The regioselectivity of N-tosylcarbomoylation of N-monosubstituted β-aminovinyl trifluoromethyl ketones depends on the structure of ena...

The thermal Curtius rearrangement of benzoyl azide in the presence of Lewis acids has been studied by DFT (PBE/TZ2P) method. The complexation of Lewis acids (BF3, AlCl3, SbCl5) with benzoyl azide leads to the formation of 1:1 and 1:2 stable complexes with interaction of catalysts with O and N at...

Conditions for the addition of trialkyl(trifluorovinyl)silanes to the carbonyl- and thiocarbonyl function of commercially available isocyanates and isothiocyanates in the presence of tetramethylammonium fluoride (TMAF) to give corresponding amides of 2,3,3-trifluoroacrylic and 2,3,3-trifluorothi...

The gas phase IR, gas phase UV and solution 13C NMR spectroscopic data for seven carbonyl isocyanates XCONCO and eight acyl isocyanates RCONCO are reported. The IR group frequencies are assigned and substituent-frequency relationships are given for the CO and NCO stretching frequencies...

The scope of a cyclization reaction between amino-acetonitriles and isocyanates was investigated. The study revealed that this reaction tolerates various functional groups leading to highly functionalized 5-amino-imidazole-2-ones, which are useful intermediates for purine synthesis.

A new protocol for the synthesis of d-galactal-derived N-ethoxycarbonyl vinyl aziridine 1β-CO2Et, starting from tri-O-acetyl-d-glucal, is described. The new protocol constitutes a simple and fast access, with a satisfactory overall yield (5 steps, 36%), to a d-galactal-derived vinyl aziridine w...

An intermolecular carbamoylation of ethers has been achieved via photoinduced functionalization of ethereal C–H bonds in the presence of benzophenone at ambient temperature. The carbamoyl group, a one-carbon unit with a high oxidation state, derived from pentafluorophenyl isocyanate (C6F5NCO) i...

The interaction of amidrazones and isocyanate esters in dimethylformamide produces good yields of 4-substituted -1-imidoylsemicarbazides. They are unaffected by acids, but are cyclised to 3-alkyl (or aryl)-1,2,4-triazol-3-ones or their 4-substituted analogues in alkaline media. Analogous linear ...