Materials Literature
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Polypyrrole-coated silver nanocomposite particles were synthesized by one-step aqueous chemical oxidative dispersion polymerization of pyrrole using silver nitrate as an oxidant. The synthesized nanocomposite particles behaved as a ‘coloured’ particulate emulsifier for the stabilization of oil-in-water emulsions.
The ability of peptides and proteins to change conformations in response to external stimuli such as temperature, pH and the presence of specific small molecules is ubiquitous in nature. Exploiting this phenomenon, numerous natural and designed peptides have been used to engineer stimulus-responsive systems with poten…
Magnetic circular dichroism (MCD) spectroscopy has widely been applied to porphyrins and phthalocyanines since around 1970, in order to elucidate their electronic structures. In this mini-review, some representative MCD results from the author's laboratory over the past 30 years are introduced, together with recent re…
Self-organized nanostructures that provide antireflection properties grow on PMMA caused by plasma ion etching. A new procedure uses a thin initial layer prior to the etching step. Different types of antireflective structures can now be produced in a shorter time and with fewer limitations on the type of polymer that…
Abstract The 20‐nanogold cluster Au 20 exhibits a large variety of two‐ and three‐dimensional isomeric forms. Among them is the ground‐state isomer Au 20 ( T d ) representing the stable cluster with a unique tetrahedral shape, with all atoms on the surface, and large HOMO‐LUMO gap which even slightly exceeds that of t…
One of the main problems in fabricating natural fibre reinforced polymers is the poor adhesion between intrinsically polar plant fibres and non-polar polymer matrices. We have developed a truly green technique of modifying natural fibre (hemp and sisal) surfaces to improve the interaction between the fibres and polyme…
Resilin is an elastic protein found in specialized regions of the cuticle of insects, which displays unique resilience and fatigue lifetime properties. As is the case with many elastomeric proteins, including elastin, gliadin and spider silks, resilin contains distinct repetitive domains that appear to confer elastic…
Conventional nickel yttria-stabilized-zirconia (Ni–YSZ) solid oxide fuel cell anodes infiltrated with ceria nanoparticles showed sustained high sulfur tolerance. Cathode-supported cells with ceria-infiltrated Ni–YSZ anode delivered power density of 220–240 mW , at , under an applied current of 0.4 A , when operating o…
A new soft chemical route to [Ta6O19]8- has been developed by the dissolution of [Ta(O2)4]3- in conditions alkaline enough to arrest formation of Ta2O5, followed by [VO4]3--catalyzed decomposition of the peroxide ligands and crystallization of the salt. An average of bond lengths and angles from isostructural salts of…
Mesoporous single-crystal Co(3)O(4) was obtained using cage-containing mesoporous silicas, FDU-12 and SBA-16, as templates and characterised by XRD, HRTEM and nitrogen adsorption-desorption while SQUID magnetometry was used to probe the magnetic character.
Organic ferroelectrics are multifunctional candidates for future organic electronic and optical devices. In spite of their potential, only a few organic compounds are known to exhibit a ferroelectric transition. The conventional approach to ferroelectrics, in general, relies on the use of asymmetric dipolar molecules…
We present a combined experimental and theoretical investigation of the surprisingly strong electrostatic effects that can occur in mixtures of low- and high-polar liquids (e.g. oil-water emulsions), here in the presence of colloidal particles. For our experiments, we used confocal microscopy imaging, supplemented wit…
Detailed understanding of weak solid-gas interactions giving rise to reversible gas adsorption on zeolites and related materials is relevant to both, fundamental studies on gas adsorption and potential improvement on a number of (adsorption based) technological processes. Combination of variable-temperature infrared s…
The development of surface enhanced Raman scattering (SERS) detection has made Raman spectroscopy relevant for highly sensitive labon- a-chip bio/chemical sensors. Despite the tremendous benefit in specificity that a Raman-based sensor can deliver, development of a lab-on-a- chip SERS tool has been limited thus far. I…
The conversion of a Cu 2 O film on copper to Cu 2 S in aqueous sulfide solutions has been followed using a combination of electrochemical techniques and in situ Raman spectroscopy. Oxide films were electrochemically grown in alkaline solutions and their composition and morphology determined using Raman spectroscopy an…
Electrospinning is a simple and cost-effective approach for the production of nanofibers and assemblies with controllable structures. In this work, based on sol–gel chemistry and the electrospinning technique, porphyrin-doped nanocomposite fibers with a form of nanofibrous membrane were successfully fabricated without…
A pair of isostructural bis-selenathiazolyl and bis-diselenazolyl radical conductors display weak (spin-canted) ferromagnetism with Tc values of 18 K and 27 K respectively.
We demonstrate that nitrogen doped, multi-walled carbon nanotubes (CN(x)-MWNT) result in photo-ablative destruction of kidney cancer cells when excited by near infrared (NIR) irradiation. Further, we show that effective heat transduction and cellular cytotoxicity depends on nanotube length: effective NIR coupling occu…
We report that symmetry breaking by a magnetic field can drastically increase the photoluminescence quantum yield of single-walled carbon nanotubes, by as much as a factor of 6, at low temperatures. To explain this we have developed a theoretical model based on field-dependent exciton band structure and the interplay…
Metal–Organic Frameworks for Regeneration of Degraded Liquid Crystals Wei Lee, Cheng-Ting Huang, Kun-Ting Liao, Jy-Shan Hsu & Chia-Her Lin a Institute of Imaging and Biomedical Photonics, National Chiao Tung University, Tainan, Taiwan b Department of Physics, Chung Yuan Christian University, Chungli, Taiwan c Center f…