Materials Literature
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Diagnose und Behandlung in einem: Multifunktionelle magnetisch-polymere Nanohybride (MMPNs) für die spezifische MRI-Detektion und Behandlung von Brustkrebs wurden aus hoch empfindlichen MnFe2O4-Nanokristallen, chemotherapeutischen Wirkstoffen und amphiphilen Blockcopolymer-Kapseln hergestellt. Gezeigt sind das TEM-Bil…
Self-assembled peptide nanotubes are unique, newly developed nano-structures which exhibit many exciting properties that may establish them as preferred nano-technological building blocks, especially for nano-fluidics, biological sensing and self-assembly applications. Integrating peptide nanotube materials in standar…
Abstract A precursor polymer PEO‐ b ‐PEMA that contains anilino moieties is synthesized from EPAEMA by ATRP by using a PEOBr macroinitiator and CuBr/HMTETA catalyst system. The aminoazobenzene‐containing block copolymer PEO‐ b ‐PCN is obtained by the azo‐coupling reaction between PEO‐ b ‐PEMA and the diazonium salt of…
Abstract TGA has been used to study the thermal degradation of PS in atactic (aPS), syndiotactic (sPS), and isotactic (iPS) forms. Thermal stability of sPS is similar to that of aPS, whereas iPS degrades at a notably higher temperature. TGA‐FT‐IR data do not show any obvious difference in the degradation products of t…
The restrictions on the coefficients describing physical effects depend on the orientation of the symmetry elements of the crystal or quasicrystal with respect to the Cartesian coordinate system employed. They are given for the piezoelectric effect of second order in stress or strain for all the orientations that can…
Abstract Three new heterobimetallic 1D coordination polymers have been obtained by assembling the [Ni(bpca) 2 ] complex, as a building block, with lanthanide cations: [{Ln(O 2 NO)(H 2 O) 3 }{Ni(bpca) 2 }](NO 3 ) 2 · 3H 2 O (Ln Gd 1 ; Tb 2 ; Dy 3 ). The three compounds are isostructural and their structure consists of…
Intrinsic defects in zigzag BN nanotubes, including single vacancy, divacancy, and Stone-Wales defects, are systematically investigated using density functional calculation. It is found that the structural configurations and formation energies of the topological defects in considered tubes are dependent on tube diamet…
Using a synchrotron x-ray radiation source and a diamond anvil cell we measured the functional dependences of the lattice parameters of Cr 2 GeC and V 2 GeC to quasi-hydrostatic pressures of the order of 50 GPa. Like other solids in this family of layered ternary carbides and nitrides, the bulk moduli are high and no…
Recent NMR experiments by Singer et al. [Singer, Phys. Rev. Lett. 95, 236403 (2005).] showed a deviation from Fermi-liquid behavior in carbon nanotubes with an energy gap evident at low temperatures. Here, a comprehensive theory for the magnetic field and temperature dependent NMR 13C spin-lattice relaxation is given…
For any future cost-effective applications of inorganic nanostructures, in particular, hybrid photovoltaic cells, it is essential that these inorganic nanomaterials be solution processable and selectively printable. This letter reports the selective growth of single-crystal ZnO nanostructures based on the microcontact…
A new synthetic approach using the Pluronic P123-assisted hydrothermal reaction of lanthanum phosphate and europium-doped lanthanum phosphate has been developed, which results in the formation of uniform spindle-shaped microarchitectures most probably by a self-assembly process. Our results reveal that the obtained sp…
Studies of silver nanoparticle formation using MWNT-protein/polypeptide conjugates are reported. Our findings suggest that there is selectivity in the formation of silver nanoparticles depending on the nature of the protein. Protein-mediated mineralization is facile and can be carried out under mild conditions, thereb…
A comparative study that deals with the internalisation of different types of magnetoliposomes (MLs) by 3T3 fibroblasts revealed that cationic MLs proved to be superior to neutral and anionic ones. Internalisation was visualised both by optical light and transmission electron microscopy. The latter showed that the cat…
Organosilica porous solids containing chiral organic moieties in the framework with an enantiomeric purity of 95% ee, estimated by eluting organic constituent units from chiral organosilicas, were synthesized from a newly designed chiral (R)-(+)-1,2-bis(trimethoxysilyl)phenylethane precursor via a surfactant-mediated…
This Special Section contains sixteen papers covering a range of exciting developments in bionanotechnology . We hope that readers from both the materials science and the biomedical research communities can find the work presented here beneficial to their current research and begin to venture into this interdisciplina…
Manipulating the directional movement of liquid droplets is of significance for design and fabrication of some microfluidic devices. An energy-based method is adopted to analyse the directional movement of a droplet deposited in a conical tube or on a conical fibre. We perform an experiment to investigate the directio…
Well-aligned tin-doped indium (ITO) nanowires have been prepared using the electrospinning process. The Sn doping mechanism and microstructure have been characterized by x-ray diffraction (XRD) and x-ray photoelectron spectroscopy (XPS). Devices for I-V measurement and field-effect transistors (FETs) were assembled us…
Olefin epoxidation by [gamma-SiW10O36(PhPO)2]4- and H2O2 occurs in hydrophobic ionic liquids (ILs), with yields and selectivity up to >99%. The catalytic IL phase is recyclable. Under MW irradiation the reaction occurs with up to 200 turnovers per minute. Simultaneous cooling is instrumental for quantitative H2O2 conv…
Carbon nanomaterials, such as carbon nanohorns and carbon nanotubes, have attracted considerable attention for their biomedical applications. We report here the first application of carbon nanohorns (CNHs) as potent laser therapeutic agents for highly selective elimination of microorganisms. This is the first report,…
A study of the accurate electron-density distribution in molecular crystals at subatomic resolution (better than approximately 1.0 A) requires more detailed models than those based on independent spherical atoms. A tool that is conventionally used in small-molecule crystallography is the multipolar model. Even at uppe…