Metal template assembly of highly functionalized octacyanoporphyrazine framework from TCNE structural units
A new route to the octacyanoporphyrazine framework based on the interaction of metal sandwich pi-complexes with TCNE has been developed.
Materials Literature
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The synthesis and characterisation of europium terpyridine-N-oxide complexes
Europium complexes of a series of terpyridine-N-oxide ligands have been prepared and structurally characterised by crystallographic studies. While the addition of three equivalents of terpyridine-1-oxide or terpyridine-1,1'-bisoxide results in complexes with nine co-ordinate tricapped trigonal prismatic or monocapped…
Synthesis of Phthalocyanine Fused with Bicyclo[2.2.2]octadienes and Thermal Conversion into Naphthalocyanine
Mg complex of phthalocyanine fused with bicyclo[2.2.2]octadiene (BCOD) units is prepared by the reaction of BCOD-fused phthalonitrile with Mg(OPr) 2 in PrOH at 100 ºC overnight in 42% yield.Subsequent heating the product at 250 ºC results in clean formation naphthalocyanine via the retro Diels-Alder reaction.An attemp…
Fatigue Life and Crack Growth Mechanisms of the Type 316LN Austenitic Stainless Steel in 310°C Deoxygenated Water
The low cycle fatigue tests of the type 316LN stainless steel were conducted to investigate the cracking mechanisms in high-temperature water. The fatigue lives of the specimens tested in 310°C deoxygenated water were considerably shorter than those tested in air. For the specimens tested in 310°C deoxygenated water,…
Telluroselenophosphonium ions: their unusual soft–soft interactions with iodotellurate anions
Formally uncharged two-coordinate tellurium atoms in trialkyl(telluroseleno)phosphonium salts [(tBu2iPrPSeTe-p-Tol)+ (p-TolTeI2)-] () and {[(iPr3PSeTeI)+]2 (TeI6)2-} () behave as soft acceptors towards iodotellurate anions, thus exhibiting a novel type of Te...Te anion-->cation donor-acceptor interaction () and a chel…
Morphology evolution of GaPO4 mesocrystals in a nonionic triblock copolymer system by pH-dependent control
In the synthesis of gallium phosphate, GaPO4, crystals via a hydrothermal route, using amphiphilic triblock copolymer F127, [(EO)106(PO)70(EO)106]–OH, as a surfactant-template, a pH-dependent morphology evolution is observed in the progress of crystal growth. By altering the initial pH level from 7.34 to 11.54, the mo…
A comparative study of two different methods for direct polyamidation of N-trimellitylimido-L-methionine with various aromatic diamines
N-trimellitylimido-L-methionine (3) as optically active diacid monomer was prepared by the reaction of trimellitic anhydride (1) with L-methionine (2) in acetic acid solution at refluxing temperature. The direct polycondensation of this amide-imide diacid monomer 3 with several aromatic diamines was carried out with t…
Processing, stabilization and applications of metallic foams. Art of science
Metallic foams have been of considerable interest both from the industrial applicability and scientific viewpoint. In the last three decades, since the inception of the metal foam, several processes have been developed to introduce large size pores, almost uniformly distributed, in the metallic materials. These proces…
Palność polimerów i materiałów polimerowych
[...] Książka składa się z 8 rozdziałów, z których każdy można rozbudować do obszernej monografii. W pierwszych trzech rozdziałach omówiono podstawowe prawa rządzące złożonymi procesami fizycznymi i chemicznymi decydującymi o dynamice palności polimerów. Dotyczą one zjawisk zapłonu i rozprzestrzeniania się płomieni pr…
Topography and gloss of precipitated calcium carbonate coating layers on a model substrate
This work investigates the correlation of topography, morphology, and optical properties between a rough substrate and the coatings covering it. A model substrate (YUPO((R)) film, "synthetic paper") was coated with increasing amounts of rod-like precipitated calcium carbonate (PCC) pigment. A versatile roughness analy…
Optimization Techniques for Automation and High Throughput
The main effort in the area of crystallization for structural genomics is currently being invested in automation of high-throughput screening procedures to identify potential crystallization conditions. However, screening in itself, even in massive quantities, is not enough; it has to be complemented by an equally imp…
Synthesis of an Intumescent Flame Retardant (IFR) Agent and Application in a Natural Rubber (NR) System
This investigation focuses on the synthesis and characterization of an intumescent flame-retardant (IFR) agent. Three steps are used in the synthesis process. Meanwhile, the structure is characterized by Fourier transform infrared spectroscopy (FTIR), magic-angle spinning nuclear magnetic resonance (MAS-NMR) 13 C spec…
Materials informatics : Fast track to new materials
Current methods for new materials development focus on either deeper fundamental-level studies or generation of large quantities of data. The data challenge in materials science is not only the volume of data being generated by many independent investigators, but its heterogeneity and also its complexity that must be…
Orientation-Controllable Growth of Ni Nanowire Arrays with Different Diameters
The Ni nanowires with different diameters were prepared by direct-current electrodeposition into the pores of porous anodic alumina membrane. The growth orientation of Ni nanowires with different diameters can be along [110] or [111] direction by adjusting the electrodeposition conditions. The micrographs and crystal…
Experimental performance of a meta-distributed amplifier
Meta-distributed amplifiers (MDAs) constitute a novel class of distributed amplifiers based on the active coupling of two composite-right/left handed transmission lines, and can provide dual-band amplification at two different physical ports. In this contribution, the dual-band gain and noise performance of such activ…
Polymer nanostructures in sub-micron lithographically defined channels: film-thickness effects on structural alignment of a small feature size polystyrene–polyisoprene–polystyrene block copolymer
The use of phase separation in block copolymer systems to generate regular nanopatterns at surfaces may be an alternative to advanced photolithography. Here, substrates with photolithographically defined rectangular channels (of depth 60 nm and widths 166-433 nm) are used to direct nanoscale phase separation of a poly…
The ideal small arterial substitute: Role of cell seeding and tissue engineering.
Although autogenous vessels are useful in surgery, often patients cannot furnish suitable vessels. If there are not available, two possible alternatives for vessel replacements are to use vascular synthetic prostheses such as Dacron((R)) and polytetrafluoroethylene (PTFE) or cryopreserved allografts. However, their su…
Synthesis, complexation and water exchange properties of Gd( iii )–TTDA-mono and bis(amide) derivatives and their binding affinity to human serum albumin
With the objective of tuning the lipophilicity of ligands and maintaining the neutrality and stability of Gd(III) chelate, we designed and synthesized two bis(amide) derivatives of TTDA, TTDA-BMA and TTDA-BBA, and a mono(amide) derivative, TTDA-N-MOBA. The ligand protonation constants and complex stability constants f…
A NADPH substitute for selective photo-initiation of reductive bioprocesses via two-photon induced electron transfer
A NADPH substitute where the nicotinamide moiety is replaced by a chromophoric unit having much larger two-photon absorption cross-section and able to transfer electrons to flavins only upon excitation is described as an effective two-photon nanotrigger for selective photo-activation of electron transfer in bioreducti…
Synthesis and characterization of RGD-fatty acid amphiphilic micelles as targeted delivery carriers for anticancer agents
Novel amphiphilic conjugates consisting of an Arg-Gly-Asp (RGD) peptide binding motif and aliphatic fatty acids of varying chain length (C10-C18) were synthesized and evaluated for their ability to form micelles and bind specifically to alphaVbeta3 integrin over-expressing tumor cells. The aphilphiles were characteriz…