Materials Literature
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Tetranuclear copper(II) complexes were obtained after simply dissolving [Cu(hfac)2] in formamide-methanol mixed solvents (Hhfac=1,1,1,5,5,5-hexafluoropentane-2,4-dione). X-Ray diffraction studies revealed that they possessed a tetranuclear double half-cubane core sandwiched with two trianionic ligands from 2,4,6-tris(…
Abstract Nanobiotechnology is the latest technology to provide disruptive—quantum leap—opportunities in drug development research. Examples of the utility of this approach are found increasingly in the scientific literature and the lay press. Whether for therapeutics, diagnostics, drug delivery, targeting, or some oth…
During the monitoring of the evolution of Au nanoparticles photo-synthesized via a conventional long-wave UV-visible irradiation (200 nm < λ < 600 nm) in an aqueous solution, two independent growth progresses of nanocrystals were observed. The first growth progress of nanoparticles was initiated between 90 and 96 h (D…
Isocyanide-bound model hemes always adopt the (dxz, dyz)4(dxy)1 ground state, however, we have found that the replacement of porphyrin by diazaporphyrin leads to the formation of an unprecedented low-spin bis(tert-butylisocyanide) complex with the (dxy)2(dxz, dyz)3 ground state.
Our understanding of diatom reproduction is limited, especially for marine planktonic centric diatoms. This project aimed to elucidate sexual behavior and gametogenesis in the mediophycean diatom, Thalassiosira angulata , and to determine the fine structure of its reproductive cells. A monoclonal culture of T. angulat…
Impedance matching refers to the suppression of reflected radiation from an interface and is a concept that applies right across the electromagnetic spectrum. In particular it has come to prominence in relation to the propagation of light in metallic structures and associated meta-materials. Whilst established for mic…
This paper describes the functionalization of oxidized boron-doped diamond (BDD) electrodes with N-(3-trimethoxysilylpropyl)pyrrole (TMPP) and the influence of this layer on the electrochemical transfer kinetics as well as on the possibility of forming strongly adhesive polypyrrole films on the BDD interface through e…
Covering: March 1990 to January 2006 This review covers the structural design and versatile use of maleimide spacers in the preparation of bioconjugates of the anthracyclines doxorubicin and daunorubicin. There are 66 references.
A new occurrence of schreyerite, V 2 Ti 3 O 9 , has recently been found in metamorphic rocks of the Sludyanka complex at the southern shore of Lake Baikal, Russia. In contrast to previously known schreyerite lamellae, which are intergrown with rutile, crystals from the Sludyanka complex occur as isolated single crysta…
Summary A collaborative research programme between the Council for Scientific and Industrial Research (CSIR) in South Africa and the National Cancer Institute (NCI) in the USA aimed at the screening of plant extracts and identification of potentially new anticancer drug leads was initiated in 1999. Plant extracts that…
The size distribution of gold nanoparticles was estimated based on the scattering intensity data obtained from small angle X-ray scattering (SAXS) and compared with the result of micrographs by transmission electron microscopy. The slope of the Guinier plot was used to estimate the mean size assuming a narrow particle…
The paper presents results and analysis of influence of hydrophobic surface roughness on apparent contact angle values (equilibrium conditions) and time of the bubble attachment (dynamic conditions) to hydrophobic solid surfaces (Teflon) of different roughness. The surface roughness of Teflon plates was modified in a…
Pyrolytic carbon (PyC) is widely used in manufacturing commercial artificial heart valve disks (HVD). Although PyC is commonly used in HVD, it is not the best material for this application since its blood compatibility is not ideal for prolonged clinical use. As a result thrombosis often occurs and the patients are re…
An optimal atomization air/pattern air ratio is necessary for a good coating process. The influences of variations in pattern air and nozzle diameter on the spray characteristics, such as droplet size, droplet velocity, and spray density, are investigated by using laboratory and production Schlick spray guns, both equ…
The reaction of hexacyanochromate with connectivity 6 and a mononuclear Ni complex bearing a bulky tridentate macrocycle leads in one step to the formation of a nonanuclear Cr2Ni7 complex with central low spin and peripheral high spin Ni ions; fast tunnelling of the magnetization is observed at low temperature by micr…
A remarkable cluster-cluster interaction is operative in dimers of delocalized Ru3O(OAc)5(py)2 clusters with ortho-metallated 2,2'-bipyrimidine (bpym) in an unprecedented mu4-eta1(C),eta1(C),eta2(N,N),eta2(N,N) bonding mode; interconversion of the dimeric species [{Ru3O(OAc)5(py)2}2(micro4-bpym)]n+ (n = 0, 1 or 2) wit…
In this contribution, we introduce the use of metal ion (Cd(II) and Zn(II)) modified mesostructured silica as a reaction medium, to produce a solid solution of Cd1−xZnxS nanocrystals as a thin film. With this approach, a true liquid crystalline templating (TLCT) and liquid crystalline mesophase of transition metal sal…
Systematic studies based on 1H NMR and 13C NMR indicated that the alkylthio group behaves as a weak electron-withdrawing group in a simple aniline system like 2-butylthioaniline, while the same alkylthio group clearly acted as a resonance electron-donating group in higher conjugated aniline trimer systems, like butylt…
Herein we present the first unequivocal evidence of the ability of isotactic N-alkyl acrylamide oligomers to assume self-assembled sheet-like structures that are reminiscent of protein beta-sheets.
The traditional eutectic solidification theories always stress the role of eutectic growth and morphology selection. However, when a eutectic alloy solidifies freely from an undercooled state, the first step commences from nucleation and then follows eutectic growth. This paper reviews the free solidification behavior…