Materials Literature
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A series of alkylimidazolium salts containing dimethyl phosphate, methyl methylphosphonate, or methyl phosphonate prepared by a facile, one-pot procedure were obtained as room temperature ionic liquids, which have the potential to solubilize cellulose under mild conditions. Especially, N-ethyl-N′-methylimidazolium met…
The characterization of nanostructured thin films is critical in the design and fabrication of optical sensors. Particularly, this work is a detailed study of the properties of layer‐by‐layer electrostatic self‐assembled multilayer (LbL) structures fabricated using poly(allylamine hydrochloride) (PAH) and Neutral Red…
Official journal of the Institute of Physics - Sri Lanka. Full text articles are available. The journal also has a website at http://www.ip-sl.org/sljp/The new email for the Editor is eic.ipsl@gmail.com.
In order to study both the effect and the degradation behavior of magnesium alloys on/in animals,AZ31B magnesium alloys with different dimensions were implanted in the New-Zealand rabbits,and compared with a titanium alloy(Ti-6Al-4V)as a control material.It was found from the experiments that the osteotylus was formed…
Graft copolymers of methyl methacrylate (MMA) and its binary mixtures such as MMA + ethyl acrylate (EA), MMA + acrylonitrile (AN), MMA + acrylic acid (AA), MMA + vinyl acetate (VA), MMA + acrylamide (AAm) and MMA + styrene (Sty) with flax fiber have been prepared in air (IA) and under the influence of microwave radiat…
Since its discovery, the direct-methods origin-free modulus sum function S , originally denoted Z R by Rius [ Acta Cryst. (1993), A 49 , 406–409], has been used for solving some relatively complex crystal structures from powder X-ray diffraction data. In these applications, phase refinement was normally carried out by…
Abstract Two types of molecule-based magnets CuII3[WV(CN)8]2(pyrimidine)2·2-propanol·6H2O (1) and CuII3[WV(CN)8]2(pyrimidine)2·1-butanol·5H2O (2) are prepared. These compounds have a 3-dimensional porous structure, in which a noncoordinated 2-propanol or 1-butanol molecule is penetrated. These compounds show long-rang…
Three large (4–7 mm) natural diamonds, each half brown and half white, from the Argyle Diamond Mine in Western Australia, have been studied for growth history and crystal perfection. Scanning electron microscopy and X-ray single-crystal topography showed the diamonds to have good octahedral morphologies but poor inter…
Recently, we have developed novel Eu(III) complexes with three beta-diketonates and one asymmetric bis(phosphine) oxide whose light emission intensity is drastically increased. In this paper, one of these complexes is investigated by the density functional theory calculation. Sixteen isomers of this complex have been…
Strongly fluorescent micrometer-sized mesostructured polythiophene–silica composite particles were synthesized, and their absorption and fluorescence properties were found to be dependent on their mesostructures. Two cationic trimethylammonium bromide surfactants carrying a thiophene group at the end of their hydropho…
Abstract A 3d–4f complex with the formula of {Na[(CuL)4Gd]}1∞ was prepared, where (CuL)− is a “ligand-complex,” [N-(4-methyl-6-oxo-3-azahept-4-enyl)oxamato]copper(II). The structure consists of a pin-wheel-like Cu4Gd core and Na+ ion as a connector to give a one-dimensional chain. The magnetic data and their analyses…
A correct interpretation of the diffraction phenomenon in crystals with low dislocation content, for which the kinematical scattering theory does not yield any reasonable results, was carried out by X-ray extinction treatments. Different approaches to investigating the dislocation-induced X-ray extinction changes are…
Variations of lattice and modulation parameters of an incommensurately modulated phase as well as the resulting line broadening arising in powder diffraction patterns were theoretically analysed. The resulting line broadening is in principle microstrain-like. For the case that only the modulation parameters vary, only…
Variable-temperature X-ray crystal structure determinations (80–330 K) on compounds {Fe[tren(6-Mepy) 3 ]}(ClO 4 ) 2 (1-Fe) {tren(6-Mepy) 3 is tris[3-aza-4-(6-methyl-2-pyridyl)but-3-enyl]amine} and {Zn[tren(6-Mepy) 3 ]}(ClO 4 ) 2 (1-Zn) {tren(6-Mepy) 3 is tris[3-aza-4-(6-methyl-2-pyridyl)but-3-enyl]amine} were carried…
The adsorption of methanol and ethanol on room-temperature single-walled carbon nanotubes (SWCNTs) has been investigated using Fourier transform infrared (FTIR) spectroscopy and two-level ONIOM calculations. Whereas methanol does not adsorb onto SWCNTs at room temperature, ethanol does adsorb molecularly under these c…
The electrochemical properties of dichloro- and dihydroxo-SnIV porphyrins with three different macrocycles were examined in CH2Cl2 containing 0.1 or 0.2 M tetra-n-butylammonium perchlorate as supporting electrolyte. The investigated compounds are represented as (TPP)SnX2, (P)Sn(X)2, and (PQ)Sn(X)2, where TPP = 5,10,15…
The crystal structure of a cubic Pm\overline 3 m perovskite-type doped lanthanum cobaltite, La 0.6 Sr 0.4 CoO 3−δ , has been studied using in situ neutron powder diffraction data measured at 1531 K. The refined occupancy 0.886 (6) of O atoms at the 3 d 1/2, 0, 0 site indicated an oxygen deficiency of δ = 0.34 (2) and…
The clinkerization processes to form belite clinkers, with theoretical compositions close to 60 wt% of Ca 2 SiO 4 , have been studied in situ by high-resolution high-energy (λ = 0.30 Å) synchrotron X-ray powder diffraction. In order to obtain active belite cements, different amounts of K 2 O, Na 2 O and SO 3 have been…
(CF x ) n cathode reaction during discharge has been investigated using in situ X-ray diffraction (XRD). Mathematical treatment of the in situ XRD data set was performed using multivariate curve resolution with alternating least squares (MCR–ALS), a technique of multivariate analysis. MCR–ALS analysis successfully sep…
The systematic presence of the ternary phases U 6 Mo 4 Al 43 and UMo 2 Al 20 is reported in a U–Mo/Al interaction layer grown by thermal annealing. This work shows, therefore, the low Mo solubility in UAl 3 and UAl 4 binary phases; it contradicts the hypothesis of the formation of (U,Mo)Al 3 and (U,Mo)Al 4 solid solut…