Materials Literature
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Enzymvermittelte Freisetzung: Die Funktionalisierung von mesoporösen SiO2-Nanopartikeln mit Sulfasalazin (SZ), einem Prodrug der 5-Aminosalicylsäure (5-ASA; siehe Schema) und von Sulfapyridin, ergibt enzymresponsive Nanotransporter. In Gegenwart des Kolon-spezifischen Enzyms Azo-Reduktase (orange) werden 5-ASA und Sul…
Hummerfärbung und die Chemie des Sehens lieferten Inspiration für Fluoreszenzsonden, die auf Membranpotential, Fluidität und Spannung reagieren. Entplanarisierung durch Erhöhung des sterischen Anspruchs entlang des Gerüstes (rote Kreise) und Fluorophorpolarisierung durch endständige Donoren (D) und Akzeptoren (A) sowi…
BACKGROUND: Angiogenesis plays a critical role in embryonic development and various physiological processes. However, excessive angiogenesis is associated with several pathological conditions including cancer. Pithecellobium jiringa (Jack) Prain is a traditional medicinal plant from the family Leguminosae. It is nativ…
Density functional theory (DFT) within the framework of zeroth order regular approximation has been used to predict a new class of stable clusters through encapsulation of an actinide or lanthanide atom/ion into the C 26 cage. The electronic structures, bonding, stability, aromaticity and spectroscopic properties of t…
Dynamic nuclear polarization (DNP) employs paramagnetic species to increase the NMR signal of nuclear spins. In liquids, the efficiency of the effect depends on the strength of the interaction between the electron and nuclear spins and the time scales on which this interaction is modulated by the physical motion of th…
Mesoporous materials: A multifunctional porous organic material (ANPPIT; see picture) has been synthesized and characterized. Multifunctionality of the compound has been determined from nitrogen adsorption, guest-dependent luminescence, and electrical conductivity measurements.
In light of the micro/nanoporous structure concept and metal oxide-based anodes of lithium ion batteries (LIBs), a novel kind of three dimensional (3D) porous micro/nanostructured interconnected (PMNI) metal/metal oxide electrode was successfully fabricated via a facile H2 gas bubble dynamic template route. Firstly, 3…
PEGylated chlorin e(6) photosensitizers were synthesized with tri(ethylene glycol) attached at the ester bond(s) for a 1:1 conjugate at the 17(3)-position, a 2:1 conjugate at the 15(2)- and 17(3)-positions, and a 3:1 conjugate at the 13(1)-, 15(2)-, and 17(3)-positions. These chlorin sensitizers were studied for hydro…
Due to limitations of bone autografts and allografts, synthetic bone grafts using osteoconductive biomaterials have been designed. In this study, collagen-chitosan-calcium phosphate microparticle-based scaffolds fused with glycolic acid were compared to their counterparts without collagen in terms of degradation, cyto…
The effect of cesium carbonate (Cs2CO3) doping on the electron transport properties of 4,7-diphenyl-1, 10-phenanthroline (BPhen) layer has been investigated in organic light-emitting diodes (OLEDs). Temperature-dependent admittance spectroscopy studies show that the incorporation of Cs2CO3 from 0 to 42 wt. % can decre…
In the pursuit of electrocatalysts with great economic and ecological values for non-enzymatic glucose sensors, one-dimensional copper@carbon (Cu@C) core-shell coaxial nanowires (NWs) have been successfully prepared via a simple continuous flow wet-chemistry approach from electroplating wastewater. The as-obtained pro…
Phosphoenolpyruvate carboxykinase (PEPCK) is an essential metabolic enzyme operating in the gluconeogenesis and glyceroneogenesis pathways. Recent studies have demonstrated that the enzyme contains a mobile active site lid domain that undergoes a transition between an open, disorded conformation and a closed, ordered…
Self-interacting dark matter, especially bosonic, has been considered a promising candidate to replace cold dark matter (CDM) as it resolves some of the problems associated with CDM. Here, we rule out the possibility that dark matter is a repulsive boson in thermal equilibrium. We develop the model first proposed by G…
Abstract The objectives of this research were to investigate the capability of a new hydrolyzing enzyme to hydrolyze native and cross‐linked starches in the granular state and to examine the influence of cross‐linking on hydrolysis. Corn, tapioca, and sweet potato starches were chemically modified by cross‐linking wit…
A "basophilic method" for phenolic hydroxyl bridged lanthanide coordination polymers (CPs) was developed. With this method, eleven CPs with the general formula of [Ln(HL1)L1·H(2)O](n) (Ln = Tb (1), Nd (2), Eu (3), Gd (4), La (5), Er (6), Y (7), H(2)L1 = 4-methyl salicylic acid) and [Ln(HL2)L2·2MeOH](n) (Ln = Eu (8), T…
In this work we report on functional multilayer films containing electrochemically reduced graphene oxide (ERGO) by the alternating layer-by-layer (LBL) assembly of negatively charged graphene oxide (GO) and positively charged poly (diallyldimethylammonium chloride) (PDDA) in combination with an electrochemical reduct…
We describe a continuous microfluidic system for seeded crystallization of small organic molecules, such as active pharmaceuticals, and demonstrate integration with in situ detection tools for determining the size and polymorphic form of the crystals. This integrated device is used to extract growth kinetics, as a scr…
Get to know the onion: Conductance measurements for functionalized carbon nano-onions were conducted using an STM-based molecular junction approach (see picture). It was found that electron transmission through these systems occurs by a tunneling mechanism. The carbon-based core seems to provide a very efficient mediu…
The design and evaluation of fluorescence “turn-on” detection of melamine with cyanuric acid modified tetraphenylethene based on aggregation-induced emission, which can recognize the safe concentration level of melamine (1 ppm) in real powdered milk, is demonstrated (see figure).
Poly(cobaltoceniumethylene), a water-soluble cationic metal-containing polyelectrolyte, adopts a chiral structure when bound electrostatically to DNA.