Maksym Seredyuk、A.B. Gaspar、Joachim Kusz 等 5 位作者2007-11-10Journal of Applied Crystallography
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…
Metal complexes synthesis and propertiesMagnetism in coordination complexesLanthanide and Transition Metal Complexes
Mark D. Ellison、Steven T. Morris、Matthew Sender 等 5 位作者2007-11-10The Journal of Physical Chemistry C
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…
Carbon Nanotubes in CompositesMechanical and Optical ResonatorsNanopore and Nanochannel Transport Studies
Zhongping Ou、E Wenbo、Weihua Zhu 等 7 位作者2007-11-10Inorganic Chemistry
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…
Electrochemical sensors and biosensorsPorphyrin and Phthalocyanine ChemistryElectrochemical Analysis and Applications
Masatomo Yashima、Takayuki Tsuji2007-11-10Journal of Applied Crystallography
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…
Advancements in Solid Oxide Fuel CellsMagnetic and transport properties of perovskites and related materialsAdvanced Condensed Matter Physics
Ángeles G. De la Torre、Khadija Morsli、Mohammed Zahir 等 4 位作者2007-11-10Journal of Applied Crystallography
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…
Concrete and Cement Materials ResearchAdvanced ceramic materials synthesisX-ray Diffraction in Crystallography
Mark A. Rodriguez、Michael R. Keenan、Ganesan Nagasubramanian2007-11-10Journal of Applied Crystallography
(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…
Spectroscopy and Chemometric AnalysesNuclear Physics and ApplicationsX-ray Diffraction in Crystallography
H. Palancher、P. Martín、Vivian Nassif 等 11 位作者2007-11-10Journal of Applied Crystallography
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…
Nuclear reactor physics and engineeringRadioactive element chemistry and processingNuclear Materials and Properties
María Monteserín、Hugh D. Burrows、Artur J. M. Valente 等 9 位作者2007-11-10The Journal of Physical Chemistry B
The interaction between the cationic HTMA-PFP (Poly-(9,9-bis(6'-N,N,N-trimethylammonium)hexyl-fluorene phenylene) bromide) and oppositely charged sodium n-alkyl sulfonate surfactants of different chain lengths has been studied in DMSO-water solutions (4% v/v) by UV-visible absorption, fluorescence spectroscopy, fluore…
Organic Light-Emitting Diodes ResearchConducting polymers and applicationsLuminescence and Fluorescent Materials
Vincent Legrand、Sébastien Pillet、Hans‐Peter Weber 等 7 位作者2007-11-10Journal of Applied Crystallography
Bragg diffraction data were collected on single crystals of the spin-crossover complex [Fe(phen) 2 (NCS) 2 ] in its low-spin and light-induced metastable high-spin states. Experimental variables included the temperature (32 and 15 K), the X-ray source (sealed tube and synchrotron), and the time interval between laser…
Magnetism in coordination complexesLanthanide and Transition Metal ComplexesMetal-Catalyzed Oxygenation Mechanisms
Pancě Naumov、Petre Makreski、Глигор Јовановски2007-11-10Inorganic Chemistry
The reaction mechanism underlying the photoinduced linkage isomerization of discrete arsenic-sulfur clusters in the realgar form of tetraarsenic tetrasulfide (alpha-As4S4) to its pararealgar form was studied on a natural specimen of the mineral with a combination of in situ single-crystal X-ray photodiffraction and Fo…
Chalcogenide Semiconductor Thin FilmsCrystal Structures and PropertiesPhase-change materials and chalcogenides
V. I. Korsunskiy、Reinhard B. Neder、Andreas Hofmann 等 6 位作者2007-11-10Journal of Applied Crystallography
An approach to modelling radial distribution functions (RDFs) of nanoparticle samples over a wide range of interatomic distances is presented. Two different types of contribution to the model RDF are calculated. The first explicitly reflects the structure of the nanoparticle parts with more or less crystalline atomic…
Quantum Dots Synthesis And Propertiesnanoparticles nucleation surface interactionsX-ray Diffraction in Crystallography
R. Bagai、George Christou2007-11-10Inorganic Chemistry
The Mn12 family of single-molecule magnets (SMMs) has been extended to a fourth isolated member. [Mn12O12(O2CR)16(H2O)4] (1) exhibits three quasi-reversible one-electron-reduction processes at significantly higher potentials than [Mn12O12(O2CMe)16(H2O)4]. This has allowed the previous generation and isolation of the o…
Metal-Organic Frameworks: Synthesis and ApplicationsMagnetism in coordination complexesLanthanide and Transition Metal Complexes
Amanda S. Barnard、Huifang Xu2007-11-10The Journal of Physical Chemistry C
Following recent reports of the successful low-temperature synthesis of high quality and single-crystal CdS quantum nanostructures, attention has turned toward identifying the critical factors affecting the preferred shape and surface structure of these important nanomaterials. Presented here are the results of first…
Quantum Dots Synthesis And PropertiesChalcogenide Semiconductor Thin FilmsCopper-based nanomaterials and applications
Philippe Carpentier、Antoine Royant、J. Ohana 等 4 位作者2007-11-10Journal of Applied Crystallography
A Raman microspectrophotometer is described that allows the spectroscopic investigation of protein crystals under exactly the same conditions as those used for X-ray data collection. The concept is based on the integration of the Raman excitation/collection optics into a microspectrophotometer built around a single-ax…
Protein Structure and DynamicsEnzyme Structure and FunctionSpectroscopy Techniques in Biomedical and Chemical Research
Corinne Arrouvel、Boubakar Diawara、Dominique Costa 等 4 位作者2007-11-10The Journal of Physical Chemistry C
The adsorption of glycine (G) on the (0001) surfaces of α-alumina with terminations modeling increasing water activity, O 3 Al (anhydrous) and (Al 3 O−H, O 3 Al−OH) (oxy-hydroxide-like) were investigated at low coverage. Different possible glycine conformers have been considered (neutral (NG), zwitterion (ZG), anion (…
Mesoporous Materials and CatalysisIron oxide chemistry and applicationsLayered Double Hydroxides Synthesis and Applications
Gilman E. S. Toombes、Adam C. Finnefrock、Mark W. Täte 等 6 位作者2007-11-10Macromolecules
The structures of a poly(isoprene- block -ethylene oxide) (PI- b -PEO) block copolymer-directed aluminosilicate mesostructure and the resulting ceramic material obtained from calcination were studied via small-angle X-ray scattering (SAXS) and transmission electron microscopy (TEM). The PI minority phase (volume fract…
Polymer crystallization and propertiesAdvanced Polymer Synthesis and CharacterizationBlock Copolymer Self-Assembly
Akrajas Ali Umar、Munetaka Oyama2007-11-10Crystal Growth & Design
The preparation and characterization of a large-scale vertical array of single-crystalline CuO nanowires on different material surfaces is demonstrated for the first time. The procedure simply involved a room-temperatures liquid–solid growth process of attached CuO nanoseeds on ITO surface in the mixed aqueous solutio…
ZnO doping and propertiesCopper-based nanomaterials and applicationsElectronic and Structural Properties of Oxides
Antoine Royant、Philippe Carpentier、J. Ohana 等 9 位作者2007-11-10Journal of Applied Crystallography
Synchrotrons are now producing thousands of macromolecular structures each year. The need for complementary techniques available on site has progressively emerged, either to assess the relevance of the structure of a protein or to monitor changes that may occur during X-ray diffraction data collection. Microspectropho…
Protein Structure and DynamicsPhotosynthetic Processes and MechanismsEnzyme Structure and Function
Hyukjin Lee、Yongho Jeong、Tae Gwan Park2007-11-10Biomacromolecules
Shell cross-linked hollow polyelectrolyte microcapsules composed of hyaluronic acid (HA) and poly- l-lysine (PLL) were prepared by layer-by-layer (LBL) adsorption and subsequent core removal by a reductive agent. Disulfide cross-linked HA microgels were used as template core materials for the LBL deposition on the sur…
Polymer Surface Interaction StudiesAdvanced Drug Delivery SystemsDendrimers and Hyperbranched Polymers
Kenneth L. Knappenberger、Daryl B. Wong、Yaroslav E. Romanyuk 等 4 位作者2007-11-10Nano Letters
Core/shell CdSe/ZnS quantum dot fluorescence-blinking statistics depend strongly on excitation wavelength. Excitation on the band gap (575 nm) results in inverse-power law "on" time distributions. However, distributions resulting from excitation above the band gap (525 nm) require a truncated power law and are 100 tim…
Quantum Dots Synthesis And PropertiesChalcogenide Semiconductor Thin FilmsNear-Field Optical Microscopy