The synthesis of two novel series of 1-(4-chlorophenyl)-4-hydroxy-1H-pyrazoles linked to either polysubstituted 1H-pyrazole counterparts through a carbonyl bridge, or to some biologically-active nitrogenous heterocycles by an amide linker, is described. Ten of the newly synthesized compounds wer...

A series of novel derivatives of N-cinnamoyl-l-aspartic acid were designed, synthesized, and assayed for their inhibitory activities against aminopeptidase N. The preliminary biological assay showed that compound 8c has the most potent inhibitory activity against APN with an IC50 of 11.1 ± 0.9 ...

In this study, five series of (E)-6-(4-substituted phenyl)-4-oxohex-5-enoic acids IIb–f (E), (E)-3-(4-(substituted)-phenyl)acrylic acids IIIa–g (E), 4-(4-(substituted)phenylamino)-4-oxobutanoic acids VIa,b,e, 5-(4-(substituted)phenylamino)-5-oxopentanoic acids VIIa,f and 2-[(4-(substituted)phe...

A series of novel 6-chloro-4-(2-chlorophenyl)-3-(2-hydroxyethyl) quinolin-2(1H)-one derivatives were synthesized and evaluated for anti-hepatitis B virus (anti-HBV) activities in vitro to explore their structure–activity relationships (SARs). Most of the synthesized compounds possessed potent a...

The chemiluminescence (CL) arising from reaction of bis(2,4,6-trichlorophenyl)oxalate (TCPO) with hydrogen peroxide in the presence of a brightener 5-(3-anilino-5-chloroanilino)-2-{(E)-2-[4-(3-anilino-5-chloroanilino)-2-sulfophenyl]-1-ethenyl}-1-benzenesulfonic acid (Bri) has been studied. The r...

The conditions for growing single crystals of mercurous halides have been examined on the basis of solid-liquid-vapor equilibrium data. The physical vapor transport (PVT) growth method has proved suitable for growing large single crystals, although inhomogeneity in the materials' refractive...

Large, oriented single crystals of mercurous chloride were grown by the physical vapor transport (PVT) method. Crystal quality was evaluated by birefringent interferometry and scattering measurements. A total variation of 2.2 × 10−4 in refractive index was estimated over the whole aperture (25 ...

Mercurous halides show strong orange luminescence at 77°K when excited at energies above the fundamental absorption edge. At room temperature this luminescence is strong only in the chloride and bromide. Spectral features, including band maxima and half widths of both excitation and emission sp...

We present evidence that the optical rotatory power of mercurous chloride is zero, in contrast with a previous report. The evidence is consistent with the picture of mercurous chloride crystals as uniaxial and non-optically active, but with some tendency for optic axis “wander”.

Thermodynamic calculations were carried out for the Hg-X-O system (X = Cl, Br, I) to identify the potential sources of contamination and relative stability of oxides and oxy-halide phases. The effect of excess mercury vapor pressure on the optical quality of mercurous halide crystal was studied ...

Mercurous halides are extremely insoluble in most organic and inorganic solvents. This makes members of this class of compounds very difficult to purify by recrystallization from solution. The conventional directional freezing and zone melting methods also fail because all the mercurous halides ...

The improvement in the optical quality of mercurous halide crystals is described. Optical quality was evaluated by studying optical distortion, birefringence interferograms, and laser scattering characteristics; the parameters which are crucial for practical devices. Mercurous chloride and mercu...

Single crystals of mercurous halide were grown by physical vapor transport method (PVT). The orientation and the crystalline quality of the grown crystals were determined using high resolution x-ray diffraction (HRXRD) technique. The full width at half maximum (FWHM) of the grown mercurous bromi...

Large, good quality single crystals of mercurous bromide (Hg2Br2) were grown by the physical vapor transport method. Velocity of acoustic waves along the 〈110〉 direction was measured to be 273 m/s, indicating the capability of delaying 100 μs long cells which are only 2.73 in aperture. Prelim...

Mercurous bromide single crystals were grown by the physical vapor transport method in a sealed quartz tube. Growth rates were measured for crystals growing in different orientations. Experimental data followed the equation lt=l∞−A exp(−t/τ), where lt is the length of the crystal at any time t...

We carried a theoretical investigation on the structural and electronic properties of mercuric iodide in the red tetragonal crystalline phase, and its respective intrinsic defects. The calculations were performed using the total energy spin-polarized augmented plane wave method and the generaliz...

Polycrystalline mercuric iodide films are being developed as a new detector technology for X-ray imaging at room temperature. Polycrystalline mercuric iodide (HgI2) films have been grown on ITO-coated glass substrates using hot-wall physical vapor deposition (HWPVD) with the different source tem...

A novel, green, facile and dual turn-off/on sensor for detection of Hg2+ and I- was developed based on carbon dots. Carbon dots were synthesized from citric acid, urea, and thiourea by microwave-assisted method. The size of the carbon dots (CDs) was about 10 nm and the synthesized CDs showed a s...

Photoetching effects during the chemical dissolution of mercuric iodide in an iodide solution may produce noticeable surface roughening while the mean etch rate, to a first approximation, is not modified. As this phenomenon is directly related to the formation during etching of a surface chemica...

Millimeter-sized mercuric iodide crystals were fabricated by the solvent evaporation technique using pure ethanol as a solvent. Three different conditions for solution evaporation were tested: (i) in the dark at room temperature; (ii) in the presence of light at room temperature and (iii) in an ...