Materials Literature
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This paper reports the use of first (G1), second (G2) and third (G3) generation dendritic branches based on L-lysine building blocks with an [18]crown-6 unit at the focal point to bind protonated dopamine. The binding strength in CD3OD is dependent on dendritic generation (G1 > G2 < G3). As expected, the presence of w…
Oriented Au–Cu nanoalloys have been generated in SiO2 films using a new two-layer (TL) coating approach. Two successive overlapping coating layers were deposited on silica glass substrate using Au- and Cu-incorporated inorganic–organic hybrid silica sols. The concentrations of the Au and Cu (3 equivalent mol% metal–97…
Neutral transition metal complexes of different alpha,omega-dimethyltripyrrins TrpyMX with M = Cu(II) and Zn(II) have been prepared with a variety of anionic halogeno and pseudohalogeno ligands X, and have been studied with respect to coordination modes and structural distortion. Only four- and five-coordinate species…
Abstract Characterization and performance of electrochemically treated cast PANI‐HgCl 2 films for detection of HCN in the range 1–20 ppm were studied. The HCN detection comprises analytical signals that are generated from the work function change and the resistance change of the sensing layer. The sensing platform acc…
Pseudomorphic transformation is introduced as an effective and versatile method to independently optimize the morphology of the grains and the structural properties of mesostructured silicas. In this account a short overview is given of the preparation of MCM-41 and MCM-48 mesophases as non-aggregated and homogeneousl…
A tetranuclear complex [Cr(III)Mn(II)(3)(PyA)(6)Cl(3)] 1 containing pyridine-2-aldoximato monoanion, PyA, has been structurally and magnetochemically characterized. The compound is a rare example of a tetranuclear star-shaped metal topology containing pyridine-2-aldoximato ligands. Static magnetic studies have demonst…
Cyclic octanuclear complexes, each containing seven group 13 metals and one d-block metal are reported and preliminary physical characterisation of the compounds discussed.
Abstract A method to microfabricate micron‐scale freestanding porous silicon photonic crystal particles is described. An electrochemically prepared film of porous silicon on a crystalline silicon substrate is patterned with an SU8‐25 photoresist, and the unmasked porous silicon is removed with a chlorine plasma reacti…
Y 2 SiO 5:Eu 3+ and Gd 9.33 (SiO 4 ) 6 O 2:Eu 3+ red phosphor particles were prepared using an emulsion liquid membrane (ELM, water-in-oil-in-water (W/O/W) emulsion) system, which could be utilized as a microreactor for precipitation reaction of rare earth oxalate and hydrolysis−condensation reaction of Si alkoxide, t…
We report a general strategy for the spontaneous segregation of electron-rich and electron-poor pi-conjugated moieties using mutually phobic aliphatic fluorocarbon-hydrocarbon interactions.
Layer-by-layer self-assembly can be used to incorporate amphiphilic molecules into multilayered polyelectrolyte architectures. This review examines equilibrium LbL assemblies constructed by direct adsorption from aqueous solution. LbL systems have not only provided fundamental insight into the nature of polyion-surfac…
New organic–inorganic hybrid molecular films, consisting of a Keggin-type polyoxometalate PW12 and a series of gemini amphiphiles with various lengths of the flexible spacers, have been fabricated using the Langmuir–Blodgett (LB) technique and the electrochemical properties of the hybrid films were investigated. When…
[Pt II (CH 3 )Cl 3 ] 2- ( 1 ), generated at 95 °C in situ from Cs 2 [Pt IV (CH 3 ) 2 Cl 4 ] in an aqueous solution of high chloride concentration and [H + ] = 0.2 M, undergoes competitive oxidation versus protonation ( k ox / k H + ) with several oxidants. A first-order dependence on oxidant concentration was determin…
Reaction of iron(II) and the 3 : 1 Schiff base condensate of 5-methylpyrazole-3-carboxaldehyde and tris(2-aminoethyl)amine in air gives a pseudo-dimer complex with a triple helix structure made of Delta-Delta and Lambda-Lambda pairings of spin crossover iron(II) and low spin iron(III) cations that are held together by…
The new hybrid inorganic–organic solids [Mo8O26][H2bpe]2 (1), {[Mo8O26(μ-bpe)][H2bpe]2}n (2), [Mo8O26(Hbpe)2][H2bpe] (3), and {[Mo8O26][H2bpe]2}n (4) were synthesized under hydrothermal conditions. The crystal structure of 1 contains the discrete octamolybdate β-isomer, whereas in 3 the inorganic building unit is a fu…
Metal-substituted hexaaluminates are highly active, selective, stable, and inexpensive catalytic materials for high-temperature N2O abatement in the chemical industry, such as in nitric acid and caprolactam plants, and in combustion processes.
The synthesis and electropolymerisation of a new terthiophene, 1,3-di-2-thienylthieno[3′,4′:5,6][1,4]dithiino[2,3-b]quinoxaline, is reported. The compound bears a quinoxaline unit fused to the central thiophene ring via a 1,4-dithiin ring; the latter unit ensures a non-planar structure for the molecule. The correspond…
Organic–inorganic hybrid Ti-functionalized mesostructured materials have been synthesized from titanocene dichloride in the presence of non-ionic surfactants as structure directing agents in acidic media. The organic functionalization of the mesoporous silica based materials has been accomplished by different techniqu…
A {Mn(III)4} distorted cube has been synthesized that possesses an S = 8 ground state and single-molecule magnetism behaviour.
High-resolution X-ray diffraction experiments and state-of-the-art density functional theory calculations have been performed. The validity of the atoms-in-molecules approach is tested for the neutral-ionic transition of TTF-CA which involves a transfer of less than one electron between the donor and acceptor molecule…