Materials Literature
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Phaser is a program for phasing macromolecular crystal structures by both molecular replacement and experimental phasing methods. The novel phasing algorithms implemented in Phaser have been developed using maximum likelihood and multivariate statistics. For molecular replacement, the new algorithms have proved to be…
A novel transparent conductive film In 2 O 3 :Mo (IMO) was sputtered onto a Si wafer, and the energy band alignment at the IMO/Si interface was studied. A large built-in potential ( V d = 1.77 eV) was detected by capacitance–voltage ( C – V ) measurement, and the schematic band alignment of IMO/p-Si was plotted. The c…
Abstract Biochips of corrugated gold and silver displaying surface plasmon resonance at different energies are fabricated to determine the nature of the mechanism responsible for the surface‐enhanced chemiluminescence (SECL) of luminol. This Full Paper proves that, whereas silver possesses the strongest resonance and…
Ins Ziel getroffen: An selbstorganisierten polymeren Nanopartikeln aus einem amphiphilen Copolymer mit Furangruppen am äußeren Polyethylenglycolkranz sind Diels-Alder-Reaktionen mit Maleimid-funktionalisierten Antikörpern zur Synthese von Immun-Nanopartikeln (siehe Bild) möglich. Das einfache und saubere Kupplungsverf…
Abstract Lanthanide metal (II) 2,6‐di‐ tert ‐butylphenoxide complexes (ArO) 2 Ln(THF) 3 (Ln = Sm 1 , Yb 2 ) alone have been developed to catalyze the ring‐opening polymerization of trimethylenecarbonate (TMC) and random copolymerization of TMC and ε‐caprolactone (ε‐CL) for the first time. The influence of reaction con…
Abstract The effects of SiO 2 nanoparticles on the performance of carboxyl‐randomized liquid butadiene–acrylonitrile rubber (CRBN) modified epoxy resin (EP) nanocomposites were studied. With the addition of an appropriate amount of SiO 2 (2%) to EP/CRBN (95/5), the nanocomposites could achieve the desired impact stren…
Abstract Natural rubber (NR), polyurethane rubber (PUR), and NR/PUR‐based nanocomposites were prepared by adding a pristine synthetic layered silicate (LS; sodium fluorohectorite) in 10 parts per hundred parts rubber, following the latex compounding route. The dispersion of the LS latices in the composites was studied…
First-principles all-electron density functional theory calculations of electric field gradients (EFGs) are presented for $\mathrm{Pb}\mathrm{Ti}{\mathrm{O}}_{3}$ and structural models of $\mathrm{Pb}({\mathrm{Zr}}_{1∕2}{\mathrm{Ti}}_{1∕2}){\mathrm{O}}_{3}$. Calculations were carried out as a function of $B$-site chem…
We resolve the photokinetic rates enhancement of Rhodamine 6G molecules diffusing in a water−glycerol mixture within a single nanometric aperture milled in an opaque aluminum film. Combining fluorescence correlation spectroscopy and lifetime measurements, we report the relative influence of excitation, radiative, and…
Abstract A new high‐performance methacrylic acid/acrylonitrile/acrylamide ternary copolymer foam was prepared by radical bulk copolymerization, and the reaction mechanism of in situ cyclization taking place during copolymer foaming as well as the heat treatment was examined too. Then, the crucial mechanism was validat…
The effective atomic number of a biomolecule for photon interaction present in DNA, RNA and retina has been estimated in the energy range 0.001-20 MeV using two different numerical methods. The significant variation of Zeff with photon energy is reported. This shows that Zeff is not constant with energy for photon int…
Using optical rotation as the primary technique, we have characterized the kinetics of helix renaturation in water solutions of gelatin. By covering a wide range of solution concentrations we identify a universal exponential dependence of folding rate on concentration and quench temperature. We demonstrate a new conce…
Here, we first report a facile one-step one-phase synthetic route to achieve size-controlled gold micro/nanoparticles with narrow size distribution by using o-diaminobenzene as a reducing agent in the presence of poly(N-vinyl-2-pyrrolidone) via a simple wet-chemical approach. All experimental data including that from…
We discuss materials that reveal fundamental intercoupling of light and chirality in creation of complex structures. These materials are based on cholesteric liquid crystals (CLCs) photosensitized by azobenzene nematics. Transformation of the one-dimensional periodic structure of such CLCs into complex spatial pattern…
We report a case in which two different crystallization mechanisms occurring in the same crystallization experiment are found to yield different polymorphic outcomes. In particular, we focus on crystallization of glycine from neutral aqueous solution. Crystallization in the bulk solution gives only the metastable alph…
Uniform and monodispersed ZnSe colloidal microspheres were prepared via a hot injection route by using trioctylamine as solvent and with a relatively higher concentration of the monomer precursors. The size of the colloidal ZnSe spheres was tuned from 138 to 629 nm by varying the concentration of the precursors, and t…
We report on a novel method for the encapsulation of highly water soluble materials by using layer-by-layer (LbL) polyelectrolyte self-assembly. State of the art polyelectrolyte self-assembly LbL coating and encapsulation methods are only applicable to insoluble or poorly water soluble template materials, because the…
A novel two-color photoluminescence (PL) is found in MnF(2) at room temperature under high pressure. Contrary to low-temperature PL, PL at room temperature is unusual in transition-metal concentrated materials like MnF(2), since the deexcitation process at room temperature is fully governed by energy transfer to nonra…
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This article covers the author's transition from small molecule organic synthesis into polymeric materials and nanotechnology which led to receipt of the Arthur C. Cope Scholar Award in 2007. This includes his start in organometallic reaction development, synthesis of precisely controlled oligomers, conjugated polymer…