Australian Journal of Chemistry
Volume 71 Number 5 2018
CH17544Synthesis and Enhanced Solar Light Photocatalytic Activity of a C/N Co-Doped TiO2/Diatomite Composite with Exposed (001) Facets
A C/N co-doped TiO2/diatomite composite with exposed (001) facets was synthesised through a facile sol–gel method, and its various physicochemical properties were investigated. The mechanism for improved photocatalytic efficiency is also discussed. The as-prepared composite exhibited promising applications in dye wastewater degradation owing to its outstanding reusability and cost-effectiveness.
CH17594Synergistic Effect of Hexaphenoxycyclotriphosphazene and Aluminium Tri-Hydroxide on Flame Retardancy and Smoke Suppression of Epoxy Resin
The synergistic effect of aluminium tri-hydroxide (ATH) and hexaphenoxycyclotriphosphazene (HPCTP) on the flame retardancy and smoke suppression of an epoxy resin was investigated. It was confirmed that HPCTP and ATH can attract a lot of heat to slow down decomposition of the resin and produce a comprehensive protection system consisting of a non-flammable gas and solid phases during burning.
CH17570Coordination-Initiated Nitroxide-Mediated Polymerization (CI-NMP)
This article describes nitroxide-mediated polymerization initiated by metal complexes–alkoxyamines. In comparison with pure alkoxyamines, complexes show a faster initiation rate, allowing a lower polymerization temperature. The faster initiation rate can be achieved by simple addition of a metal salt to a monomer–alkoxyamine mixture, avoiding the procedure of complex synthesis. This method provides easy access to metal–organic polymer materials.
CH17506Ring-Opening Polymerization Reactions of ε-Caprolactone and Lactides Initiated by (Benzimidazolylmethyl)amino Magnesium(II) Alkoxides
MgII alkoxide complexes bearing (benzimidazolylmethyl)amino ligands gave active catalysts for the ring-opening polymerization lactides and ε-caprolactone to afford moderate molecular polymers with fairly narrow molecular weight distributions.
CH18044Computational Spectroscopic Characterization of a Bistable Binuclear Complex [(CO)2(benzoate)FeII/III(terephthalate)CoIII/II(benzoate)(CO)2]+
A bistable Fe–Co binuclear complex, proposed as a molecular switch, is characterized by calculating dipole moments, polarizabilities, IR/Raman, optical rotatory dispersion (ORD), and electronic and vibrational circular dichroism spectra using a time-dependent density functional theory technique. Intrinsic reaction coordinate and Duschinsky analyses are also carried out to investigate the intramolecular charge transfer (IMCT) process responsible for the bistability. The two IMCT states have distinctly different characteristics affected by cis–trans isomerization.
CH18038Composite Membrane with a Calixarene-Containing Polyamide Functional Layer
A tetra-calix[4]arene chloride derivative (CC) and a diamino-terminated PEG-1000 (DAP) were coated sequentially on a polysulfone (PSF) base film to prepare a thin-layer composite membrane by an interfacial polymerization technique. The thin-layer calixarene network on the PSF membrane was investigated for its application in water treatment.
CH18019Synthesis of Highly Enantio-Enriched Heliespirones A and C by a Diastereoselective Aromatic Claisen Rearrangement
A second-generation synthesis of the spiro-epimeric natural products, heliespirones A and C, is reported. This revised strategy is concise (eight steps), highly enantioselective, and features a diastereoselective aromatic Claisen rearrangement.
CH17626Synthesis, Characterization, and Optical Properties of Near-Infrared Reflecting Composite Inorganic Pigments Composed of TiO2/CuO Core–Shell Particles
Composite inorganic coloured pigments (CICPs) with dark appearance and high solar energy reflectance have wide applications in energy efficient buildings. In this paper, we describe how dark grey and high NIR reflectance CICPs with a CuO/TiO2 core–shell structure were prepared by a composite co-precipitation method, in which the nano-CuO coated the surface of TiO2.
CH18018NMR and DFT Studies of 2-Oxo-1,2,3,4-tetrahydropyridines: Solvent and Temperature Effects
NMR and DFT studies were carried out on various 4-aryl substituted 5-carboethoxy-2-oxo-1,2,3,4-tetrahydropyridines and their corresponding oxidation products, in order to elucidate the steric and electrostatic interactions of 4-aryl substitutions and also the effect of solvent and temperature on the characteristic peaks in the 1H NMR spectra.
CH18048Sequential Detection of CN- and HSO4- Anions in an Aqueous Environment Utilizing a New Colorimetric Azoimine Receptor: Mimicking Logic Gate Behaviour and a Security Keypad Lock
A new isonicotiamide-based azoimine receptor has been synthesised for dual-recognition of CN− and HSO4−anions in aqueous media. Based on changes in absorption intensity at a particular wavelength in the presence of two aforementioned anions, as two chemical inputs, an INHIBIT logic gate has been elaborated.
CH18068N-Halogen Succinimides: Alternative Oxidants of Platinum Anticancer Agents
N-Halogen succinimide (NXS), as both an oxidising reagent and a source of halogens, can be used to synthesise both asymmetric and symmetric anticancer complexes. The production of asymmetric compounds offers a further mechanism by which the pharmacokinetics can be finely tuned.