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The inverse spinel CoFe2O4is prepared as nanoparticles with a range of controlled sizes. Synthesis is performed using solvothermal and coprecipitation chemistry, and a two capping group coprecipitation procedure using oxalic acid and ethylenediamine or triethanolamine is shown to afford sub-10 nm, controlled size nanoparticles. A pronounced particle size–activity relationship is observed for CO oxidation catalysis for the studied range of particle sizes. In addition, these unsupported nanoparticle catalysts readily undergo activation during catalysis and exhibit both structural and performance stability under the test reaction conditions. [ABSTRACT FROM AUTHOR]

The first examples of anionic-neutral mixed ligand frameworks prepared from 1,3,5-benzenetrisbenzoate (BTB) and 4,4′-bipyridyl (bipy) are reported. Framework 1, of composition [Ni(HBTB)(bipy)]·(guests), is a triply interpenetrated (3,5)-connected grabinodal network that has a 1-D channel structure exhibiting permanent porosity. Framework 2, which was prepared under identical conditions but in the presence of toluene, has the formula [Ni3(BTB)2(EG)3(bipy)3]·(toluene) (where EG = ethylene glycol). 2is a dense phase of triply interpenetrated rare (3,4)-connected tfzbinodal networks that contains intercalated toluene in isolated voids. The primary influence for the formation of 2are numerous hydrophobic interactions between the internal framework surface and the included toluene guest molecule. [ABSTRACT FROM AUTHOR]

The layered semiconductor Pt–HCa2Nb3O10can catalyze room temperature air oxidation of methyl orange. It is also more effective than Pt–WO3in catalyzing reaction of methanol with air. Pt–HCa2Nb3O10could find wide application as a mild oxidizing catalyst. [ABSTRACT FROM AUTHOR]

The synthesis of fluorescent water-soluble gold nanoparticles by the reduction of a gold salt in the presence of a designed polymer ligand is described, the size and fluorescence of the particles being controlled by the polymer to gold ratio; the most fluorescent nanomaterial has a 3% quantum yield, a 1.1 nm gold core and a 6.9 nm hydrodynamic radius. [ABSTRACT FROM AUTHOR]

Post-synthetic derivatisation of a porous material produces a functionalized material that binds the metal complex V(O)acac2, in contrast to the unfunctionalized precursor, which is inactive for complex binding. [ABSTRACT FROM AUTHOR]

Protonation of chiral porous materials introduces a Brønsted acid centre, the structure of which is unique to the heterogeneous phase requiring pore wall confinement for stable isolation. [ABSTRACT FROM AUTHOR]

Two l-proline based homochiral frameworks synthesised via diffusion and solvothermal methods display distinct l-proline bonding modes, one N,O chelating and one O,O bridging with amine nitrogen not bound to the metal, with binding mode dependent upon the degree of protonation of the amino acid. [ABSTRACT FROM AUTHOR]

Ligand flexibility permits framework rearrangement upon evacuation and gas uptake in a new family of porous MOFs. [ABSTRACT FROM AUTHOR]

The zero-field muon-spin-relaxation (ZF-μ+SR) technique provides direct observation of the development of antiferromagnetic long range order in the hyperexpanded methylaminated fulleride salt, (CH3NH2)K3C60 below TN∼ 10 K—coherent ordering of the electronic magnetic moments leads to a local field of ∼25 G at the muon site at 1.2 K. [ABSTRACT FROM AUTHOR]