Materials Literature
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In this work positively charged polymers based on N-isopropylacrylamide (NIPAAm) have been synthesised and investigated in solution, on surfaces and in polyelectrolyte multilayers (PEMs) in combination with nanofibrillated cellulose (NFC). Polymers having thermoresponsive properties at low salt concentrations in solut…
Author: Moosavi, A. et al.; Genre: Journal Article; Issued: 2009-11-18; Keywords: MPI für Metallforschung; Abt. Dietrich; Nanofluidics; Title: Dynamics of nanodroplets on topographically structured substrates
New approach for synthesis of Co 2+ doped TiO 2 nanoparticles showing room temperature ferromagnetic behavior, through shape transformation of hydrothermally treated scrolled titania nanotubes in the presence of Co 2+ ions is described. The XRD and ICP measurements demonstrated successful incorporation of 0.46 at. % C…
Hydrogen generation by methane steam reforming in a thermally coupled membrane reformer−combustor has been experimentally studied. The concentric three-compartment reactor indirectly couples methane steam reforming with catalytic methane combustion and with a Pd−Ag membrane, to provide extrapure hydrogen. The reactor…
The control of molecular architectures may be essential to optimize materials properties for producing luminescent devices from polymers, especially in the blue region of the spectrum. In this Article, we report on the fabrication of Langmuir-Blodgett (LB) films of polyfluorene copolymers mixed with the phospholipid d…
Solubility data of vitamin C are essential to fields such as medicine, food, and biochemistry. Regarding recent publications, for hydrotropism studies, it is shown that the knowledge of the solubility of vitamin C in different solvents is very important. In the present paper, solubility data of vitamin C in water, eth…
In this study, a KRGDKK (Lys-Arg-Gly-Asp-Lys-Lys) peptide with a RGD sequence is utilized as a functional group to synthesize a novel thermo-sensitive hydrogel. The KRGDKK peptide prepared by a solid phase synthesis approach is coupled to the ends of a poly[(epsilon-caprolactone)-co-lactide]-poly(ethylene glycol)-poly…
An electrochromic zwitterionic viologen, N,N'-bis(3-sulfonatopropyl)-4-4'-bipyridinium, has been used for the first time for doping poly (3,4-ethylenedioxythiopene) (PEDOT) films during electropolymerization. Slow and fast diffusional rates for the monomer at deposition potentials of +1.2 and +1.8 V, respectively yiel…
Abstract A novel high throughput method for synthesis and screening of customized protein‐resistant surfaces was developed. This method is an inexpensive, fast, reproducible and scalable approach to synthesize and screen protein‐resistance surfaces appropriate for a specific feed. The method is illustrated here by com…
In this work zinc azaphthalocyanines (AzaPcs) from the group of tetrapyrazinoporphyrazines and zinc azanaphthalocyanines from the group of tetra[6,7]quinoxalinoporphyrazines (TQP) with eight diethylaminoethylsulfanyl substituents were synthesized. Tertiary amines were later quaternized with ethyl iodide to obtain wate…
While semiconductor quantum dots produce little singlet oxygen, they may undergo Type I photoreactions to produce other reactive oxygen species (ROS) to kill cells. CdTe quantum dots coated with thioglycolic acid were used to test that possibility. Some thiol ligands were purposely removed to regenerate the surface el…
Abstract Polypropylene (PP)/banana fiber (BF) composites were fabricated from PP fiber and short BF by novel commingling method. The dynamic mechanical analysis (DMA) of the composites was performed with reference to BF loading and fiber surface treatments. By the incorporation of BF into the PP matrix, the storage mo…
Metal nanoparticles intercalated into and encapsulated inside single-walled (SWNTs) and double-walled (DWNTs) carbon nanotubes are synthesized using a plasma technique combined with the introduction of ionic liquids under low gas pressures. Owing to the synthesis in nano-spaces of the SWNTs and DWNTs as a template, hi…
The layer-by-layer deposition method has been used to build a multilayer thin film with two polysaccharides, chitosan CH (weak polycation) and heparin HEP (strong polyanion), on planar quartz surfaces. The film structure and dynamics in aqueous solution were studied with fluorescence resonance energy transfer (FRET) a…
We demonstrate a simple water washing process for large-scale fabrication of highly ordered and aligned rectangular silver nanowire monolayers from polyol systems. These monolayers exhibit unique structure-dependent chemical reactivities for the galvanic replacement reaction with HAuCl(4), and novel gold nanoneedle ar…
The sigma bond between the 2-phenyl pyridine head groups and the vinyl backbone of poly(2-(4-vinylphenyl)pyridine) allows for free rotation of the head groups in response to the polymer's environment (see image) and the hydrophobic vinyl backbone provides curvature for the formation of bilayer vesicles with a 1-nm mem…
Hetero-multifunctional poly(ethylene glycol-co-glycerol) random copolymers with multiple hydroxyl functionalities and a single terminal functionality have been prepared by copolymerization of ethylene oxide (EO) and ethoxy ethyl glycidyl ether (EEGE) with the use of a suitable initiator, introducing a protected amino…
The double hydroxides of Li with Al, obtained by the imbibition of Li salts into bayerite and gibbsite-Al(OH)(3), are not different polytypes of the same symmetry but actually crystallize in two different symmetries. The bayerite-derived double hydroxides crystallize with monoclinic symmetry, while the gibbsite-derive…
Easily soluble expanded graphite (ESEG) is synthesized by one-step exfoliation process using a fluorinated graphite intercalation compound (see image). Due to the severe expansion state, the ESEG obtained is sufficiently dispersed in aqueous solutions using an ordinary surfactant (SDS and SDBS) and in various organic…
The antiplasticization effect of plasticizers (that is, polyols and monosaccharides) in starch films was investigated. Pea starch films were plasticized by various polyols and monosaccharides at the levels of 0% to 25% (w/w, plasticizer/starch). After 14 d of storage at 50% relative humidity, the crystallinity of pea…