Materials Literature
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Abstract The X‐ray structures and magnetic properties of three new iron(II) coordination polymers with the general formula [FeL1(L ax )] n are presented. L1 is the tetradentate N 2 O 2 2– Schiff‐base‐like ligand ( E , E )‐{dimethyl‐2,2′‐[1,2‐phenylenebis(iminomethylidyne)]bis(3‐oxobutanato)(2–)‐ N , N′ , O 3 , O 3 ′ }…
The assembly of ordered dicolloid monolayers is directed by an electric field. The dicolloid particles are polystyrene latex with a maximum equatorial diameter 3.45 μm and length 4.63 μm. The monolayer structure is characterized using small-angle light scattering and bright-field microscopy. With increasing field stre…
Four novel yttrium complexes with the molecular formula Y(Tz)n(x)2(SCN)3−n(H2O), n = 2, 3 and x = phen, bpy, were synthesized by the reactions of yttrium salt with 5-phenyl tetrazole (Tz), 1,10-phenanthroline (phen), 2,2-bipyridine (bpy) and thiocyanate ions, and were used as the emitting material in electroluminescen…
If the addition of long fluorinated moieties as surface post-treatment is a general procedure in the elaboration of superhydrophobic properties, one of the key challenges is to develop biomimetic materials from alternative compounds such as hydrocarbon derivatives or short fluorinated tails. In this article, we show t…
Adjusting and modifying the optical properties of organic fluorophores are of importance for the development of the next generation of luminescent materials. Herein, we report the tunable fluorescence of 2,4,5-triphenylimidazole (TPI) chromophore by the formation of multicomponent crystals with the supramolecular buil…
Abstract Growth defects, domain structures and off-stoichiometric compositional deviation are the cause of significant deviation of magnetic and transport properties of magnetite (Fe 3 O 4 ) thin films. We show that these anomalous properties can be fully controlled by postannealing in CO/CO 2 atmosphere. Aberration c…
The wetting properties of solid substrates with mesoscale (between van der Waals tails and the capillary length) random roughness are considered as a function of the microscopic contact angle of the wetting liquid and its partial pressure in the surrounding gas phase. It is shown that the well-known transition occurri…
The impact of a combined diesel particle filter-deNO(x) system (DPN) on emissions of reactive nitrogen compounds (RNCs) was studied varying the urea feed factor (α), temperature, and residence time, which are key parameters of the deNO(x) process. The DPN consisted of a platinum-coated cordierite filter and a vanadia-…
Highly ordered mesoporous ZrO2 thin films were prepared by evaporation induced self-assembly. Complexing agents and low pH were simultaneously employed in order to control the hydrolysis–condensation kinetics, permitting to cast films in one step. Many commercially available PPO-based surfactants can be used as templa…
A density functional theory study is reported on pure and potassium doped tungsten trioxide. The nature of lattice distortions in the hexagonal phase is analyzed and a new symmetry group is proposed. The structure and stability of cubic, monoclinic, and hexagonal phases is studied as a function of potassium doping and…
ZnS hollow nanospheres with porous shells were successfully fabricated by a simple one-pot template-free hydrothermal route with the assistance of trolamine. The hollow nanospheres with a mean diameter of about 220 nm and the pore size of the porous shell of about 3.2 nm exhibit large BET surface areas of 129.9 m2 g−1…
In an X-ray diffraction experiment, the structure of molecules and the crystal lattice changes owing to chemical reactions and physical processes induced by the absorption of X-ray photons. These structural changes alter structure factors, affecting the scaling and merging of data collected at different absorbed doses…
New convenient procedures for the preparation of ammonia monochloroborane (NH(3)BH(2)Cl) and cyclotriborazane [(BH(2)NH(2))(3)] are described. Crystal structures have been determined by single-crystal X-ray diffraction. Strong H···Cl···H bifurcated hydrogen bonding and weak N-H···H dihydrogen bonding are observed in t…
Quantum transport calculations show that a transport gap approximately E(g) = 2ħv(F)/W can be engineered in graphene using two parallel transport barriers, separated by W, extended along the zigzag direction. The barriers, modeled by chemically decorated observed line defects, create confinement and resonance bands tr…
We have designed and synthesized a new class of rhodamine dyes with an extended π-conjugated system and named them 3',3''-bis(oxospiroisobenzofuran)-3,7-bis(diethylamino)benzopyrano-xanthene (ABPX01) dyes. ABPX01 exhibits fluorescence emission in both dilute solution and the aggregate state, whereas conventional rhoda…
When Diels–Alder-based thermoreversible covalent adaptable networks (TR-CANs), are applied in fracture healing applications, the contributions of network structure tend to take a back seat to explanations based solely on the chemical behaviour of the reversible bonds binding the network. However, for TR-CANs near the…
Despite much research efforts being devoted to the design optimization of metallic nanoshells, no account is taken of the fact that the number of the nanoshells that can be delivered to a given cancerous site vary with their size. In this paper, we study the effect of the nanoshell number density on the absorption and…
Due to the strong tissue absorption of short-wave-length light below 600 nm, in vivo imaging based on UCNPs as luminescent probes is still limited. The NIR spectral range (700–1100 nm) and the red region (600–700 nm) are referred to as the “optical window” of the biological tissues because the light scattering, absorb…
This article reviews the main mechanisms of stiffness variation typically found in nature. The temporal changes in stiffness may be fully or partially reversible, or completely irreversible, and can be very slow or fast in time depending on the strategy adopted to alter the mechanical properties. It is also possible t…
We discuss the universal-transport signatures near a zero-temperature continuous Mott transition between a Fermi liquid and a quantum spin liquid in two spatial dimensions. The correlation-driven transition occurs at fixed filling and involves fractionalization of the electron: upon entering the spin liquid, a Fermi s…