Materials Literature
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The thermal and photochemical ring-opening of spiro(3H-naphtho[2,1-b]pyran-3,9'-thioxanthene-10,10-dioxide) results in the facile ring-contraction to 9-(naphtho[2,1-b]furan-2-yl)-9H-thioxanthene-10,10-dioxide . Similar behaviour is displayed by the isomeric spiro(2H-naphtho[1,2-b]pyran-2,9'-thioxanthene-10,10-dioxide)…
We characterize the equilibrium states for the two-phase Stefan problem with surface tension and with or without kinetic undercooling, and we analyze their stability in terms of dependence on physical and geometric quantities.
The coprecipitation process, using either mixed nitrate or sulfate solutions, to produce Al-doped has been studied in detail. Using X-ray diffraction (XRD) and thermal gravimetric analysis (TGA), it has been determined that charge-compensating or ions accompany the incorporated ions into the structure to form layered…
Phase II of the Protein Structure Initiative, funded by the NIH NIGMS (National Institute of General Medical Sciences), is a 5-year effort to determine thousands of protein structures. The New York SGX Research Center for Structural Genomics (NYSGXRC) is one of the four large-scale production centers tasked with deter…
In vivo cytogenetic assay in Allium root meristems has been carried out to study the effect of nano-silver on cell division and mitotic chromosomes. Nano-silver is a potential anti-bacterial agent recommended as a preservative in personal care and consumer products. Nano particles owing to their size can enter freely…
Successful artificial tissue scaffolds support regeneration by promoting cellular organization as well as appropriate mechanical and biological functionality. We have previously shown in vitro that 2-D substrates with micrometer-scale grooves (5 microm deep, 18 microm wide, with 12 microm spacing) can induce cell orie…
A versatile sol–gel route has been developed for the preparation of hierarchical porous silica membrane material with highly dispersed platinum nanoparticles (Pt-NPs). The outstanding feature of the “one pot” synthesis developed in this work lies in the successful preparation of a stable complex suspension made of sil…
Two novel hexanuclear copper(II)-substituted tungstogermanates [Cu(2,2′-bipy)]2[Cu(2,2′-bipy)2]2[Cu6(2,2′-bipy)2(GeW9O34)2]·3H2O (1) (2,2′-bipy = 2,2′-bipyridine) and (Cuphen)2[Cu(phen)2]2 [Cu6phen2 (GeW9O34)2]∙2H2O (2) (phen = 1,10-phenanthroline), which both consist of two trilacunary [B-α-GeW9O34]10− Keggin units i…
Photovoltaic effects in individual single-walled carbon nanotube (SWCNT) based Schottky diodes were investigated for infrared detection in this paper. Different contact conditions (symmetric and asymmetric CNT-metal contacts) have been studied for optimising the performance of SWCNT-based infrared detector. Experiment…
Magnesium-titanium (Mg–Ti) thin film was applied to all-solid-state switchable mirror by magnetron sputtering. Mg–Ti thin film works as an anodic electrochromic material of optical switching layer of the device. For clear transparency and durability of the device, a composition of Mg–Ti thin film was optimized. Though…
We investigated Cu/low- k integration to test the time-dependent dielectric breakdown (TDDB) reliability of Cu interconnects. We described the relationship between TDDB lifetime and defects possibly caused by the Cu chemical-mechanical polishing (CMP) process, such as rough copper surface corrosion, crevice corrosion,…
The functionalization of the surface of multiwall nanotubes (MWNTs) is the first step for the synthesis of more complex supramolecular structures and for their application by attaching molecules, macromolecules and biologically active molecules. Here we show in detail a couple of methods for introducing oxygenated sur…
Modular chiral dendrimers with monodentate phosphoramidite ligands located at the core were synthesized and applied in the Rh-catalyzed asymmetric hydrogenations, afforded unprecedented enhancement of enantioselectivity.
Mg-Al layered double hydroxide (LDH) nanocrystallites with a lateral size less than 9 nm were in situ synthesized within the pore channels of mesoporous silica materials, creating one of the most active heterogeneous base catalysts owing to the high number of active edge sites.
Surface area (SA) of the oxide support was found to play a major role on the morphology, quality of the single wall carbon nanotubes (SWNTs) growth. Fe–Co bimetal was supported onto MgO powders with different surface areas, and used for the SWNTs synthesis from the pyrolysis of CH4 through radio frequency catalytic ch…
Highly-extended self-supporting nanoporous Au and Au–Ag alloy thin films can be successfully prepared by a self-assembly method with metal nanoparticles as starting building blocks. The size, structure, and composition distribution of the synthesized nanoporous films were characterized by scanning electron microscopy,…
Glycidol is used as an initiator for ring-opening polymerisation of epsilon-caprolactone (epsilon-CL) to synthesise epoxy-functionalised poly(epsilon-caprolactone) (PCL) in a reaction catalysed by lipase, and the epoxy-functionalised PCL was further copolymerised with carbon dioxide or anhydride to produce novel graft…
We have investigated the ability of two bipyridinium dications, with either octyl or decyl groups on their nitrogen atoms, to quench the luminescence of CdSe–ZnS core–shell quantum dots coated by either tri-n-octylphosphine oxide or a tris(phenylureido)calix[6]arene. Our studies demonstrate that both bipyridinium dica…
Robust titanium oxide nanotube (TONT) arrays were formed by electrochemical anodization on various sample shapes (rod, screw, and foil), which facilitates versatility for electrode applications. From scanning electron microscopy images, it is clearly noted that irrespective of the shape of the sample, the self-organiz…
This volume is devoted to mostly to nanotubes, unique synthetic nanoscale quantum systems whose physical properties are often singular (i.e. record-setting). Nanotubes can be formed from a myriad of atomic or molecular species, the only requirement apparently being that the host material or wall fabric be configurable…