Materials Literature
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Surface-bound fluorescence assays such as microarrays have emerged as a prominent technology in current life sciences research and are currently performed on optically passive substrates such as glass microscope slides. We present an alternative approach using photonic crystal substrates exhibiting resonant reflection…
Ferrocenylmethyl methacrylate (FMMA) is one of the very few metallocene-based monomers that are promising candidates for truly living anionic polymerization. Nevertheless, FMMA homopolymers with a narrow polydispersity, or block copolymerization studies that result in satisfying blocking efficiencies, are unknown so f…
The adsorption of myoglobin (Mb) onto nanosized nickel aluminum hydrotalcite (NiAl-HTlc) surface was studied, and the structural properties of the resulting protein layer were analyzed by using FT-IR, Raman, and fluorescence spectroscopies. Upon adsorption onto the nanoparticle surface, the protein molecules maintaine…
Abstract The one‐pot synthesis and properties of multifunctional hybrid mesoporous organosilica fibers with helical shapes are described. These hybrid mesoporous fibers are prepared without chiral elements and functionalized with a large variety of organic R functions (R = alkylthiols, phenylsulfonates, alkylphosphona…
The temperature's rising: New multiferroic perovskites In1−xMxMO3 with x=0.112–0.176 and M=Fe0.5Mn0.5 (see picture) were prepared using high-pressure techniques. They have the same structure as BiFeO3 and high Curie temperatures; in addition, they are canted antiferromagnets with Néel temperatures close to room temper…
Abstract A BaCo x Fe y Zr z O 3−δ (BCFZ) perovskite hollow fiber membrane was used to construct reactors for the partial oxidation of methane (POM) to syngas. The performance of the BCFZ fibers in the POM was studied (i) without any catalyst, (ii) with catalyst‐coated fibers, and (iii) with catalyst packed around the…
The synthesis of a carbon film by the acid-catalyzed polymerization and resinification of furfuryl alcohol with a diluted solution of HCl is studied by combining micro-FTIR and micro-Raman spectroscopies. The detailed study of the evolution of spectra as a function of dosage of furfuryl alcohol and temperature shows t…
Luminescence properties of individual (6,5) single-walled carbon nanotubes (SWNTs) were studied using continuous wave and time-resolved spectroscopy. Nanotubes synthesized by different methods (HiPco and CoMoCat) and dispersed in two different ionic surfactants were examined either in aqueous environments or deposited…
We studied the composition dependence of the structural and magnetic properties of Co-doped Ni–Mn–Ga alloys around the Mn-rich composition Ni50Mn30Ga20. By varying the Co and Mn content we have been able to tune the critical temperatures. In particular, in a suitable composition range, the Curie temperature of martens…
Synthesis and structural characterization of an octanuclear Cu(I) cluster [Cu(8){Se(2)P(O(i)Pr)(2)}(6)](PF(6))(2) (1) with an empty Cu(8) cubic core involving diisopropyl diselenophosphate (dsep) ligand has been demonstrated despite its high tendency to abstract anions even from the traces of impurities in the solvent…
Via passivation of liquid crystal (LC) photoaligning layers by thin layers of reactive mesogens, strong enhancement in LC alignment stability is achieved. Simultaneously, the passivation layers improve alignment uniformity and chemical stability of photoaligning layers and widely change pretilt angle of liquid crystal.
In recent years, silica coating has been extensively investigated to fabricate the biocompatible interface of quantum dots (QDs) for biomedical applications. We here describe a facile and efficient method of synthesizing high-quality silica-coated CdSeS QDs (CdSeS QD/SiO(2)), where an immediate photoluminescence-favor…
Structural changes such as non‐180° domain wall motion and lattice strains in Pb(Zr,Ti)O 3 ceramics are measured during the application of subcoercive cyclic electric fields using time‐resolved high‐energy X‐ray diffraction with a stroboscopic data collection technique. The contributions to the electric‐field‐induced…
The converse piezoelectric response of Pb(Zr x Ti 1− x )O 3 ceramics is investigated as a function of material composition. The effects of the crystallographic phase and different dopants on piezoelectric nonlinearity are separately examined. For a linear dependence of d 33 on E 0 , the Rayleigh law is applied to desc…
The potential application of PrBaCo(2)O(5+delta) (PBC) double perovskite oxide as a cathode for a proton-conducting solid-oxide fuel cell based on a BaZr(0.1)Ce(0.7)Y(0.2)O(3-delta) (BZCY) electrolyte was systematically investigated. XRD and O(2)-TPD results demonstrated that cation exchange between BZCY and PBC perov…
Abstract A series of amphiphilic ABC triblock copolymers are synthesized by atom transfer radical polymerization, wherein the ‘A’ and ‘C’ blocks are hydrophilic and the pH‐sensitive ‘B’ block can be switched from hydrophilic in acidic solution to hydrophobic at pH 7. Careful addition of base to the molecularly dissolv…
The effective water dispersion of highly uniform nanoparticles synthesized in organic solvents is a major issue for their broad applications. In an effort to overcome this problem, iron oxide and cadmium selenide nanocrystals were surrounded by lipid bilayers to create stable, aqueous dispersions. The core inorganic p…
The ability of alkylthiol capped gold nanoparticles (Au NPs) to tune, alter, and reverse the alignment of nematic liquid crystals (LCs) has been investigated in detail. Adjusting the concentration of the suspended Au NPs in the nematic LC host, optimizing the sample preparation protocol, or providing different sample…
Large area superhydrophobic titania membranes with high adhesive forces were fabricated by electrospinning, followed by calcination and surface modification with 1H, 1H, 2H, 2H-perfluorooctyltriethoxysilane (POTS). Varied surface structures were realized by controlling precursor aging time ( t aging ) and electrospinn…
Electromagnetic (EM) characteristics of superparamagnetic graphite-coated FeNi(3) nanocapsules were studied at 2-18 GHz. Compared with FeNi(3) nanoparticles coated by an amorphous oxide layer, the natural resonance and attenuation properties of the graphite-coated FeNi(3) nanocapsules were dramatically enhanced, due t…