Materials Literature
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Eight new multidimensional metal(II) complexes [Zn(tp)2(NCS)2] (1), [Ni(tp)2(H2O)2(µ-tp)2Ni(NCS)4]n (2), [Co(tp)2(H2O)2(µ-tp)2Co(NCS)4]n (3), [Cd(tp)2(NCS)2]n (4), [Mn(tp)2(NCS)2(H2O)2] (5), [Zn(tp)2(NCO)2] (6), [Cd(tp)(NCO)2]n (7) and [Cd(tp)(N3)2]n (8) have been synthesized by conventional reactions of the 1,2,4-tri…
We studied the effects of photo electrochemical (PEC) etching by using various concentrations (1, 2, and 4 M) of KOH solutions on both Ga- and N-face GaN layers on sapphire substrates. The Ga-face was chemically stable for KOH solutions, while by sharp contrast the KOH could etch the N-face, where the 6-fold symmetry…
Binder-free titania pastes with high viscosity were developed for the preparation of electrodes for dye-sensitized solar cells on plastic substrates. The rheological behaviour of the ethanol-based titania pastes with the addition of ammonia, hydrochloric acid and water was investigated. The change in the viscosity cou…
Manmade nanoparticles range from the well-established multi-ton production of carbon black and fumed silica for applications in plastic fillers and car tyres to microgram quantities of fluorescent quantum dots used as markers in biological imaging. While benefits of nanotechnology are widely publicized, the discussion…
Two novel yttrium trimesates with open frameworks have been synthesized by the self-assembly of trimethyl 1,3,5-benzenetricarboxylate and Y(3+) ion in mixed solvent of dimethylformamide (DMF)/water and diethylformamide (DEF)/water, where changes of solvents with different molecular sizes lead to the formation of two s…
Dibenzoylmethanate replaces the bridging triflate ligands in uranium triflate polyoxo-clusters and cleaves the U(12)O(20) core yielding the new [U(6)O(4)(OH)(4)(eta-dbm)(12)] dibenzoylmethanate (dbm(-)) cluster which slowly dissociates into a monomeric complex. This reactivity demonstrates the importance of bridging l…
A highly selective ratiometric fluorescent probe, which contains an aminonaphthalimide fluorophore and a self-immolative spacer for 1,4-dithiothreitol (DTT) detection was designed and synthesized. The probe displays a 66 nm red-shift of fluorescence emission and the color changes from colorless to jade-green upon reac…
Cobalt(iii) complexes [Co(pnt)(B)(2)](NO(3))(2) (1-3) of pyridine-2-thiol (pnt) and phenanthroline bases (B), viz. 1,10-phenanthroline (phen in 1), dipyrido[3,2-d:2',3'-f]quinoxaline (dpq in ) and dipyrido[3,2-a:2',3'-c]phenazine (dppz in 3), have been prepared, characterized and their photo-induced anaerobic DNA clea…
Metal oxide microspheres have potential applications in many fields. However, so far, the construction and controlling of nanostructures which play a crucial role in tailoring the properties of microspheres and hollow microspheres are still difficult. In this work, we were the first to successfully tune the nanostruct…
We report here the highest productivity ever observed in the direct conversion of methanol into 1,1-dimethoxymethane (ca. 4.6 kgDMM h−1 kgcat−1 at 553 K), this result being obtained over an FeMo catalyst. This catalyst is industrially used to selectively convert methanol into formaldehyde but has never before been app…
A series of novel regioselective substituted tpphz ligands and two novel mononuclear ruthenium complexes of the type [(tbbpy)(2)Ru(tpphzR(n))](PF(6))(2) (where tbbpy = 4,4'-di-tert.-butyl-2,2'-bipyridine, tpphz = tetrapyrido[3,2-a:2',3'-c:3'',2''-h:2''',3'''-j]phenazine, with n = 2 and R represents the bromine substit…
Problem statement: The measurement of powder flowability is a major concern for most industrial processes that deal with the handling of bulk solids as raw materials, intermediates, or products. Approach: The influence of particle size on the flowability of silica gel was investigated using aerated and non-aerated met…
The qualitative and quantitative investigation of historical writing materials using micro-X-ray fluorescence analysis (micro-XRF) is a suitable method for obtaining information about the chemical composition of these materials. One the one hand these chemical composition fingerprints may answer some questions concern…
Physical vapour deposition into ionic liquids allows for the first time the synthesis of a reduced lanthanide halide on the nanoscale. The obtained EuF(2) nanoparticles show a bright blue luminescence and form long-time stable-colloidal solutions in the ionic liquids.
Titanium surfaces were equipped with positively and negatively charged chemical functional groups by plasma polymerization. Their capability to influence the adhesion of human mesenchymal stem cells (hMSCs) and inflammation processes was investigated on titanium substrates, which are representative of real implant sur…
The first T(d)-symmetric lutetium metallofullerene, Lu(2)@C(76), has been synthesized, isolated, and characterized. Because of the charge transfer from the encapsulated Lu atoms to the T(d)-C(76) fullerene cage, the otherwise unstable T(d)-C(76) fullerene can be significantly stabilized as a Lu(2)@C(76) fullerene. Bot…
An iridium(III)-containing phosphorescent chemosensor Ir(ppy)(2)(L)(PF(6)) (1, ppy = 2-phenylpyridine) containing a 2,2'-bipyridyl ligand (L) functionalized with an alpha,beta-unsaturated ketone for selective detection of thiol was synthesized and characterized by spectroscopic and photophysical measurements. The stru…
Nickel salophens exclusively form monolayers at a liquid-solid interface, while in contrast zinc salophens mainly self-assemble into bilayers via axial ligand self-coordination which can be disrupted by the addition of pyridine axial ligands.
Recent developments on biomineralization and biomaterials have demonstrated that proteins play an important role in the formation of biominerals in the body, which induce or inhibit mineralization of calcium phosphate together with modulation of the mineral phase structure. Many efforts have been made to understand th…
For the first time, direct template-free electrodeposition of aligned NiZn nanofilaments was achieved on a tungsten substrate in a quiescent Lewis acidic ZnCl2-EMIC ionic liquid containing NiCl2 at 150 degrees C by applying an extremely large deposition overpotential.