Materials Literature
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Temperature-dependent uptake and release of small molecules within porous silica nanoparticles has been achieved by treatment of preformed, thiol-functionalized micro-to-mesoporous silica nanoparticles (MSN) with pyridyl disulfide-terminated poly( N -isopropylacrylamide) (PNIPAM−S−S−Py). The resulting nanoparticle−pol…
Graphene nanoribbons are the counterpart of carbon nanotubes in graphene-based nanoelectronics. We investigate the electronic properties of chemically modified ribbons by means of density functional theory. We observe that chemical modifications of zigzag ribbons can break the spin degeneracy. This promotes the onset…
Gold nanoparticles of different shapes and sizes, including nanospheres, nanocubes, nanobranches, nanorods, and nanobipyramids, were dispersed into water-glycerol mixtures of varying volume ratios to investigate the response of their surface plasmon peaks to the refractive index of the surrounding medium. The refracti…
Abstract— Electron field‐emission displays offer a viable option for the next generation of flat‐panel screens. Boasting high‐quality images in terms of good color saturation, fast refresh rate, and high brightness, these displays have the potential to offer above and beyond what the current market leaders, LCD and pl…
Abstract Amphiphilic fluorinated block copolymers synthesized via reversible addition‐fragmentation chain transfer polymerization were used for the preparation of aggregates of various morphologies. First, dissolve the copolymer in 2‐butanone; second, add a precipitant solvent, which was the mixture of water and metha…
Abstract— The unique properties of carbon nanotubes (CNTs) promise innovative solutions for a variety of display applications. The CNTs can be deposited from suspension. These simple and low‐cost techniques will replace time‐consuming and costly vacuum processes and can be applied to large‐area glass and flexible subs…
Abstract Thermal properties of polyimides with main chain containingalicyclic units derived from 3,3′ 4,4′‐oxydiphthalic anhydride (ODPA) and several alicyclic‐ containing diamine monomers, including 1,4‐bis (4‐aminophenoxymethylene) cyclohexane (BAMC), 1,4‐bis (3‐aminophenoxymethylene) cyclohexane (mBAMC), 1,4‐bis (4…
We use ab initio calculations to study the compositional ordering and quantum transport in ${\mathrm{Mo}}_{6}{\mathrm{S}}_{9\ensuremath{-}x}{\mathrm{I}}_{x}$ nanowires. The skeleton of these nanowires consists of Mo octahedra, which are functionalized by S and I adsorbates and connected by flexible ${\mathrm{S}}_{3}$…
A smooth cutoff formulation of the hierarchical reference theory (HRT) is developed and applied to a Yukawa fluid. The HRT equations are derived and numerically solved leading to the expected renormalization group structure in the critical region, nonclassical critical exponents and scaling laws, a convex free energy…
We report the first asymmetric synthesis of trans optically active (+) C 2 1,3-bisarylepoxide of calix[4]arene in excellent chemical yield and >99% ee, and its enantiospecific conversion to the corresponding bis-dioxolane.
The differential conductivity of the domains of a phase segregated diblock copolymer film, polystyrene-block-poly (ferrocenylethylmethylsilane) (PS-b-PFEMS), is described using conducting-probe atomic force microscopy. The schematic on the right depicts the experimental setup, and the image on the left is a representa…
The solution phase behavior of short, strictly alternating multiblock copolymers of type (A(n)B(n))(m) was studied using lattice Monte Carlo simulations. The polymer molecules were modeled as flexible chains in a monomeric solvent selective for block type A. The degree of block polymerization n and the number of diblo…
Abstract— The use of ZnO nanostructures in various display applications is reported. Single‐crystalline vertically oriented nanowires with typical diameters of 100 nm and a length of 1–2 μm were grown at deposition temperatures below 100°C. Homogeneous growth over areas up to 50 cm 2 on Si as well as on various metall…
Abstract Thin films of poly(ethylene terephthalate) (PET) having a thickness of 100 μm were exposed to different ion fluence of swift heavy ions of carbon in the range of 5 × 10 11 – 5 × 10 13 ions/cm 2 . The effect of ion beam on structural and electrical modification has been studied by UV/vis, FTIR, X‐ray diffracti…
A facile electrochemical approach was developed for the controllable synthesis of bismuth hexacyanoferrate(II) (BiHCF(II)) nanoplates. The composition, morphology, and structure of the as-prepared BiHCF(II) nanoplates were characterized by the techniques such as infrared spectrum, thermogravimetry, inductively coupled…
A shorter lifetime: The photoluminescence (PL) lifetime of intracellular thiol-capped CdTe quantum dots (QDs) varies greatly depending on the intracellular environment. The fluorescence image shows localization of the QDs (red) and lysosomes (green) in a human hepatocellular carcinoma (QGY) cell. The PL decay of the Q…
Abstract Large‐scale orthorhombic V 2 O 5 single‐crystalline nanowires with diameters of 60–80 nm and lengths into the millimeter range were synthesized through a facile template‐free, mild, and direct hydrothermal reaction between VOSO 4 · x H 2 O and KMnO 4 . The nanowires are nearly visible to the naked eye and are…
Trigonal-planar, middle transition metal diiminato-imido complexes do not exhibit high-spin states, as might be naively expected on the basis of their low coordination numbers. Instead, the known Fe(III), Co(III), and Ni(III) complexes exhibit S = 3/2, S = 0, and S = 1/2 ground states, respectively. Kohn-Sham DFT calc…
For the first time the surface of brass (Cu−Zn alloy) and its chemistry have been characterized by scanning tunneling microscopy/spectroscopy at the subnanometer (atomic) scale. The comparative results obtained on Cu 70 Zn 30 (111) and Cu(111) single-crystal surfaces evidence the random distribution of Zn atoms substi…
Integral equation theory with a hybrid closure approximation is employed to study the equilibrium structure of highly size asymmetric mixtures of spherical colloids and nanoparticles. Nonequilibrium contact aggregation and bridging gel formation is also qualitatively discussed. The effect of size asymmetry, nanopartic…