Materials Literature
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The complex bis(μ-sulfur)-sulfur-[N-phenyl-N′-(2-nitrobenzoyl)-thiourea]copper (I) was obtained from the reaction between the N-phenyl-N′-(2-nitrobenzoyl)-thiourea(HL) and copper(II). The compound was characterized by IR and 1H NMR, 13C NMR spectroscopy and its structure was determined by single crystal X-ray diffract…
The effects of crystallization of indomethacin as a poorly water-soluble drug in aqueous surfactant solutions (using the basket method), on the drug dissolution behavior was investigated.A significant enhancement of drug dissolution was observed for for the dissolution rates of crystals treated with hydrophilic surfac…
It was just over a hundred years ago that the famous Paul Ehrlich put forward his theory of “the magic bullet”, as an approach to overcome and tame different disease states. Among these, targeting to the cancer cells in varying bodily locations (organs) is of prime interest. Scientists have ever since worked on the pr…
Scheme 1. Synthetic routes to fluorescent chemosensor 1 Calix[4]arenes are important building blocks in supramolecular chemistry. The calixarene framework provides a unique possibility to organize several binding sites in an array complementary to a potential guest. A variety of calixarene-based receptors for cations,…
Two new polyoxomolybdate compounds, [ZnII(Hppz)3]2(Mo8O26) (1) and [NiII(bpy2]2(Mo8O26) (2) (Hppz: 3-(2-pyridyl)pyrazole); bpy: 2,2′-bipyridine), were synthesized under hydrothermal conditions. X-ray diffraction analyses reveal that 1 consists of one β-octamolybdate and one ZnII . Compound 2 consists of one α-octamoly…
Symplocos racemosa Roxb bark belongs to the family: Symplocaceae. In Ayurveda it is known as Lodhra. The bark was collected and dried for four days under sun and powdered. It was extracted with different solvents ethanol, methanol and ethyl acetate by soxhlet hot extraction process. Preliminary phytochemical analysis…
The partial phase behavior of systems composed of lecithin/isopropyl myristate (IPM)/water or ketorolac tromethamine (KT) solutions (2.5, 5, 10 and 50% w/w) at various lecithin/IPM weight ratios (km) have been investigated by the construction of phase diagrams. A commercially available soybean lecithin (namely, Epikur…
New complex $[Mn(II)H_{1.5}L]_2[Mn(II)H_3L]_2(ClO_4)_5{\cdot}3H_2O$ (1), where $H_3L$ is tris {2-(4-imidazolyl)methyliminoethyl} amine (imtren), has been prepared by reacting manganese(II) perchlorate hexahydrate with the imtren ligand in methanol. X-ray crystallographic study revealed that the imtren ligand hexadenta…
After a survey of the solid–liquid transition, driven by phonon–phonon interactions, attention is next focussed on two phase transitions caused by electron–phonon interactions. These are (i) the Barden–Cooper–Schrieffer pure metal superconducting transition and (ii) the original Peierls instability. These have closely…
Quantum mechanical calculations at the B3LYP theory level, together with the 6-31G* basis set, were employed to obtain the energy, ionization potential, and polarizabilites for dipyridamole and derivatives, which are compared with their biological activity. Density functional calculations of the spin densities were pe…
The dissociation energy of HgO obtained through all electron 4-component DFT calculations shows good agreement with experimental data, opposing some high level calculations from literature. It suggests that the reaction Hg + BrO -> HgO + Br is feasible to take place under atmospheric conditions.
The synthesized ligand (DADMBTZ = 2,2′-diamino-5,5′-dimethyl-4,4′-bithiazole) is used for preparing these two new 1 : 2 adducts of [Pb(DADMBTZ)2(NO3)X] X = CH3COO− (1) and (2) complexes. Characterization was done by IR, 1H- and 13C-NMR spectroscopy, elemental analysis, and single crystal X-ray determination. UV-Vis an…
In sol-gel method using the citric acid, the citric acid molecule loses 3 protons from the three carboxyl groups, which results in the citrate anion. This citrate anions can chelate metal cations like as the interaction between citric acid and colloidal silica. This is the reason why we use colloidal silica solution i…
The dilational properties of partly hydrolyzed polyacrylamide (HPAM) and 4,5-diheptyl-2-propylbenzene sulfonate (377) mixed systems in the absence or presence of electrolyte or oleic acid at the oil-water interface have been described by means of the oscillating barriers method and the interfacial tension relaxation m…
Film coating solutions containing different grades of HPMC (E5, E15 and E50) with and without polyethylene glycol (with various molecular weights) were examined by an oscillatory method, using Haake CV 100 rheometer. Fundamental rheological parameters ( η, G and G ² ) were measured over the frequency range from 0.04 t…
Crystallization of an equimolar mixture of 1,10-dimethylphenanthroline (DMP) and manganese(II) chloride from N,N-dimethylformamide (DMF) has been studied. Rather than a useful route to a well-defined product, it was found that identical solutions could deposit crystals of three different compounds. The most common out…
Organosolv lignin (OSL) esters (side-chain carbon number, n = 3, 4, and 5) have been demonstrated to be miscible with poly(ϵ-caprolactone) (PCL) on a scale (20–30 nm) for detecting glass transition temperature (T g) by differential scanning calorimetry (Polym. J. 2009, 41(3), 219–227). Further precise quantification o…
The effect of scouring systems, i.e. bioscouring and conventional scouring, of cotton fabrics on the printability of the latter by a reactive dye was studied. Parameters affecting the bioscouring process, namely concentration of alkaline pectinase enzyme in single use and in admixture with cellulase enzyme and duratio…
A simple and efficient synthetic route for making purpurin-18-N-aminoimides is described. The purpurin-18-Naminoimides are obtained by treatment of purpurin-18 methyl ester with various amines. These new compounds have long wavelength absorptions in the range of 706 - 711 nm. In preliminary screening, the purpurin-18-…
In this study we gain insight into the structural and functional characterization of the Aeropyrum pernix oligopeptide-binding protein (OppA(Ap)) previously identified from the extracellular medium of an Aeropyrum pernix cell culture at late stationary phase. OppA(Ap) showed an N-terminal Q32 in a pyroglutamate form a…