Materials Literature
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Blue light-emitting Au nanoclusters were synthesized in a simple one-pot process via reflux of Au ions with amino-terminated poly(1,2-butadiene) in toluene. DLS results and photoemission spectra showed that Au(8) nanoclusters were successfully formed. Moreover, photo-patterned films containing Au(8) clusters were prep…
Ultrafine ligament noble metal nanoporous films are successfully fabricated by self-organization of ultrathin nanowires. The replacement of weak binding capping agent Triton X-114, used for stabilizing nanowires, by Cl(-) is claimed for this self-organization. Our method is also applicable for synthesizing other hiera…
Medium chain length poly(hydroxyalkanoates) (mcl-PHAs) are bacterial thermoplastic elastomers with a large potential in medical applications. The present study provides a novel process to isolate and purify poly([R]-3-hydroxy-omega-undecenoate-co-3-hydroxy-omega-nonenoate-co-3-hydroxy-omega-heptenoate) (PHUE) and poly…
A new program for basic powder pattern manipulations and visualization is described. It provides a user-friendly interface for comparison of spectra with each other and with simulated patterns based on single-crystal data. The program contains all necessary tools for the preparation of routine images for qualitative p…
According to NMR evidence the metal-mediated sandwich assemblies of porphyrins 2 and 3 undergo in solution a thermally driven motion that resembles that of a stepper: the spontaneous rotational motion of the pyridyl rings is converted into a reciprocating linear motion of the porphyrins.
Biocomposites were successfully prepared by reinforcing polylactic acid with flax fibres (PF). To improve the interfacial adhesion between the matrix and the fibres, amphiphilic compounds as additives were introduced. Structural and thermal characterisations of the PF were performed by Fourier transform infrared spect…
The influence of experimental parameters in the formation of peculiar silver–polypyrrole core/shell nanostructures (Ag@PPy nanosnakes) has been studied in detail. Thus, the initial ratio of reactants and particle size, as well as the temperature, solvent and atmosphere used, all have a dramatic effect on the reaction…
Waterborne polyurethane (PU) and a series of PU acrylate (PUA) composite dispersions were synthesised from isophorone diisocyanate, polyester polyols, dimethylol propionic acid, hydroxyethyl methyl acrylate, butyl acrylate and methyl acrylate. Fourier transform infrared, ultraviolet visible and differential scanning c…
BACKGROUND: The overall objective of this study was to develop a nanoparticle formulation for dual modality imaging of head and neck cancer. Here, we report the synthesis and characterization of polymeric phospholipid-based nanomicelles encapsulating near-infrared (NIR) phosphorescent molecules of Pt(II)-tetraphenylte…
A produção de biodiesel foi incentivada pelo desejo de se obter fontes energéticas de origem diferente do petróleo. Este processo, contudo, gera grandes quantidades de glicerina como subproduto. Assim, novas aplicações devem ser encontradas para esta glicerina evitando o colapso da cadeia nacional produtiva de gliceri…
Attapulgite (ATP), which was modified with hexadecyl trimethyl ammonium bromide (HTAB), was introduced into phenolic foam (PF), and HTAB modified ATP (HTAB-ATP) reinforced PF nanocomposites (PF/HTAB-ATP nanocomposites) were first synthesised. The HTAB-ATP was well dispersed in phenolic resin, and a simultaneously good…
In this study, we have investigated molecular fluctuations in a liquid crystalline polyrotaxane (CB5PR) consisting of poly(ethylene glycol) (PEG) and α-cyclodextrins (CDs) chemically modified with mesogenic cyanobiphenyl groups in solid state by dielectric spectroscopy. The results were compared with a hydroxypropylat…
A weak polyelectrolyte coating, carboxylated poly(oligo(ethylene glycol)methacrylate-co-2-hydroxyethylmethacrylate), was prepared via surface initiated polymerization (SIP) from initiators immobilized to gold surface through the Au-S bonds. When dry thickness increased up to 75 nm, this polyelectrolyte coating was pul…
The modification of an azide-functionalized regioregular polythiophene with TEMPO groups is reported. The TEMPO functionalized polymer is characterized by ESR, ATR-IR, absorption and emission spectroscopies and electrochemical methods. Partial quenching of the polymer emission by the TEMPO groups is observed. The poly…
Abstract Methane‐air partial oxidation to methanol over a ceramic‐supported Fe 2 O 3 ‐CuO catalyst was investigated in a post‐plasma catalytic reactor at ambient conditions. The multicomponent catalyst exerted a better catalytic performance than the monocomponent Fe 2 O 3 catalyst. Characterization of the catalysts by…
Recent in situ experimentation at the Australian Synchrotron resulted in the nucleation and crystallization of material on the walls of the capillary reaction vessels. This lining of the capillary walls, without filling the bulk of the capillary volume, produced an artefact in the diffraction data due to sample displa…
The photo-physical properties of Eu-SWCNTs indicate that intrinsic excitonic properties of SWCNTs sensitize the lanthanoid element europium (Eu) to emit time-resolved red luminescence.
Magnetic metal (Mn, Fe, Co, and Ni) oxides nanocrystals with small size and uniform size distribution are synthesized via a cation-exchange reaction. Two experimental stages are included in the synthesis of metal oxides nanocrystals. Firstly, Cu(OH)2 decomposes to CuO nanocrystals, induced by free metal cations. Compa…
The ability to control and tailor the interparticle structures and properties of molecularly-mediated assembly of nanoparticles in terms of molecular size, shape, and structure is essential for exploring the nanostructured multifunctional properties. This report describes the results of an investigation on how such mo…
Using ab initio calculations, we have evaluated two structural descriptions of γ-Al(2)O(3), spinel and tetragonal hausmannite, and explored the relative stability of γ-Al(2)O(3) with respect to α-Al(2)O(3) with 2.5 at.% of Si, Cr, Ti, Sc, and Y additives to identify alloying element induced electronic structure change…