Materials Literature
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The oxidative polymerization (OP) of unprotected 5-hydroxyquinoline (HQ) in an aqueous alkaline medium without an added external template, surfactants or functional dopants , leads to the formation of the C-3 and C-6 linked organic solvent-soluble, quinoline homopolymer (PHQ). The polymer had an average molecular weig…
We report the growth of cadmium-selenide (CdSe) quantum-wire (QW) films on a variety of substrates by the solution-liquid-solid (SLS) method. Our SLS syntheses employ size-controlled, near-monodisperse bismuth (Bi) nanoparticles (NPs) as the catalysts for QW growth, which offers several advantages over Bi NPs thermall…
The nanocrystalline valency-delocalized λ-phase of the binary oxide Ti(3)O(5) has recently emerged as a promising phase-change material that exhibits rapid photo-reversible optical and resistance changes at ambient temperature. Nanoscaling caused the monoclinic-λ to monoclinic charge-ordered β-phase structural instabi…
Hydrothermal reactions of lanthanide(III) oxide, molybdenum oxide, and SeO(2) at 230 °C lead to five new molybdenum-rich quaternary lanthanide selenites with two types of structures, namely, H(3)Ln(4)Mo(9.5)O(32)(SeO(3))(4)(H(2)O)(2) (Ln = La, 1; Nd, 2) and Ln(2)Mo(3)O(10)(SeO(3))(2)(H(2)O) (Ln = Eu, 3; Dy, 4; Er, 5).…
Liposomal encapsulation of doxorubicin (DXR) improves tumor accumulation and reduces adverse effects. One possible strategy for further optimization of this delivery technology would be to design the liposome carrier to release its content within the tumor tissue in response to specific stimuli such as ultrasound (US)…
We investigate the design of metamaterial blueprints for impedance-matched (reflectionless) absorbers over nonplanar surfaces in connection with optical pseudo black holes. The presence of some fundamental constraints on the existence of reflectionless absorber media at nonplanar surfaces are discussed based on analyt…
Density functional theory calculations have been carried out to investigate α-, β-, γ-, α*-, β*-, and γ*-[(PO(4))(2)W(18)O(54)](6-) Wells-Dawson isomers, which exhibited stability in the order of α > β > γ > γ* > β* > α*, reproduced the experimental observations (α > β > γ), and confirmed the hypothesis of Contant and…
Hot-injection synthesis of colloidal nanocrystals (NCs) in a substrate-bound form is demonstrated. We show that polycrystalline films submerged into hot organic solvents can nucleate the heteroepitaxial growth of semiconductor NCs, for which the ensuing lattice quality and size distribution are on the par with those o…
Because of its simplicity and cost-effectiveness, preferential crystallization (PC) can be considered as one of the most attractive techniques available for enantioseparation. In this paper,the enantioseparation of the nonessential amino acid dl -asparagine ( dl -Asn), which belongs to the group of conglomerate formin…
Abstract The ligands [ N , N ‐bis(3,5‐di‐ tert ‐butyl‐2‐hydroxybenzyl)aminoacetic acid] (H 3 L 1 ), [ N , N ‐bis(2‐hydroxy‐3,5‐dimethylbenzyl)aminoacetic acid] (H 3 L 2 ), [ N , N ‐bis(2‐hydroxy‐3,5‐dimethylbenzyl)‐ N ‐(2‐pyridylmethyl)amine] (H 2 L 3 ) and [methylamino‐ N , N ‐bis(6‐ tert ‐butyl‐4‐methyl‐2‐methylenep…
Abstract A novel macrodiol based on mixed silicone and carbonate chemistries was synthesized and used as a soft segment precursor in the synthesis of two series of segmented polyurethane (PU) copolymers varying in hard segment content and soft segment molecular weight. The hard segments in these copolymers were derive…
Due to the existing interest in new hybrid particles in the colloidal range based on both magnetic and polymeric materials for applications in biotechnological fields, this work is focused on the preparation of magnetic polymer nanoparticles (MPNPs) by a single-step miniemulsion process developed to achieve better con…
Abstract Nanocomposites based on melt blending of an organoclay and a thermoplastic matrix have end-use properties directly controlled by the state of dispersion of the clay and the resulting nanostructure. It is thus very important to be able to correctly quantify the levels of intercalation and exfoliation of these…
Understanding the influence of macromolecular crowding and nanoparticles on the formation of in-register β-sheets, the primary structural component of amyloid fibrils, is a first step towards describing in vivo protein aggregation and interactions between synthetic materials and proteins. Using all atom molecular simu…
An ionic liquid, 1-butyl-3-methylimidazolium chloride ([Bmim]Cl), was used to dissolve Japanese fir (Abies sachallnensis MAST) wood. Milled woods prepared by planetary ball-milling for 8 h dissolved completely in [Bmim]Cl at 100 °C in 2 h. The dissolved woods were then subjected to in situ acetylation, and the fully a…
Four patterned surfaces with hydrophilic areas of different sizes were prepared using photolithography with a smooth octadecyltrimethoxysilane (ODS) hydrophobic coating. The hydrophilic area in the surfaces was aligned hexagonally with a constant area fraction. The sliding angle and contact angle hysteresis of the wat…
Polymers are used in practically every facet of daily life. Most polymers come from fossil fuels and are not biodegradable, causing long-term environmental hazards. Biodegradable polymers provide an alternative class of materials. Composites of such polymers have high potential within a wide spectrum of applications.
1. Bio-Nanocomposites: Future High Value Materials 2. Biodegradation of Polymeric Systems 3. Biodegradable Thermoplastic Starch/Poly(Vinyl Alcohol) Nanocomposites with Layered Silicates 4. Bio-Nanocomposites with Non-Cellulosic Biofillers 5. Biodegradable Poly(Butylene Succinate)/Multi-Walled Carbon Nanotube Nanocompo…
Vesikel atmen CO2! Ein neuer Vesikeltyp, der sich aus Amidin-haltigen Diblockcopolymeren selbstorganisiert, „atmet“. Werden die Vesikel mit CO2 oder Ar behandelt, resultiert eine reversible Expansion und Kontraktion des Vesikelvolumens, ähnlich wie bei einer Luftblase (siehe Bild, PAD=Poly((N-amidino)dodecylacrylamid)…
Pseudomonas stutzeri was exposed to quantum dots (QDs) with three different surface coatings (anionic polymaleic anhydride-alt-1-octadecene (PMAO), cationic polyethylenimine (PEI), and carboxyl QDs) under both aerobic and anaerobic (denitrifying) conditions. Under aerobic conditions, toxicity (assessed per growth inhi…