Materials Literature
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In a consecutive three-component cyclocarbopalladation, Sonogashira coupling, Michael addition sequence 4-aminopropenylidene indolones, i.e., terminally fixed push-pull chromophores, are obtained in yields as high as 99%. Most remarkable, however, is the pronounced orange red solid state fluorescence displaying large…
Aromatic interactions are well-known players in molecular recognition but their catalytic role in biological systems is less documented. Here, we report that a conserved aromatic stacking interaction between dUTPase and its nucleotide substrate largely contributes to the stabilization of the associative type transitio…
Abstract New materials and techniques pertaining to the synthesis of inorganic nanotubes have been ever increasing since the initiation of the field in 1992. Recently, WS 2 nanotubes, which are produced now in large amounts, were filled with molten lead iodide salt by a capillary wetting process, resulting in PbI 2 @W…
In this report, we developed a simple and green process of simultaneous formation of doxorubicin-BSA-dextran nanoparticles in aqueous solution and high-effective encapsulation of doxorubicin. In the presence of BSA-dextran conjugates, which were produced by Maillard reaction, a binding of doxorubicin with BSA can supp…
Abstract 1 H NMR spectroscopy is an important method to obtain detailed structural information about polymers. In this study, we demonstrate the assignment of a new set of triplet peaks (sharp, equal‐strength, and equidistant peaks at δ = 6.97, 7.07, and 7.17 with a coupling constant of 51.1 Hz) in 1 H NMR spectra for…
The excited-state photodynamics of intrasupramolecular photoinduced electron transfer was investigated in a series of hydrogen-bonded supramolecular complexes composed of diprotonated 2,3,5,7,8,10,12,13,15,17,18,20-dodecaphenylporphyrin (H(4)DPP(2+)) and electron donors bearing a carboxylate group. The formation of su…
A significant BN-to-graphene charge donation is evident in the electronic structure of a graphene/h-BN(0001) heterojunction grown by chemical vapor deposition and atomic layer deposition directly on Ru(0001), consistent with density functional theory. This filling of the lowest unoccupied state near the Brillouin zone…
Polydepsipeptides - alternating copolymers of an alpha-amino acid and an alpha-hydroxy acid - are a group of biodegradable polymers. Versatile polydepsipeptides with or without pendant functional groups, as well as various polymer architectures, for example, providing alternative, random, diblock, triblock, multiblock…
In this work, we provided a comparison study of morphology and crystallization behavior of polyethylene (PE) and poly(ethylene oxide) (PEO) on single-walled carbon nanotubes (SWNTs) with assistance of supercritical CO(2). The resulting polymer/SWNT nanohybrids were characterized by transmission electron microscopy, sc…
We demonstrate how to generate highly ordered, solidified foam structures from chitosan hydrogels using millifluidic cross-flow techniques. In this, aqueous chitosan solutions (containing surfactant) and air are injected simultaneously at constant flow rates in a millimetric T-junction device, in which the gas thread…
High-quality monolayer graphene was grown on the Si face of SiC by thermal decomposition, and its electrical properties were investigated in top-gated devices. At 2 K, the carrier mobility of the graphene exceeded 10,000 cm 2 V -1 s -1 and the half-integer quantum Hall effect was observed. The quantum Hall states were…
Water solubilized nanoparticles such as CdSe-ZnS core-shell nanocrystals (quantum dots, QDs) have great potential in bioimaging and sensing applications due to their excellent photophysical properties. However, the efficient modification of QDs with complex biomolecules represents a significant challenge. Here, we des…
Smart release on demand: A general pH-responsive supramolecular nanovalve operating in aqueous media has been designed by using mesoporous organosilica hollow nanospheres as nanocontainers (see picture). The nanovalve is capable of storing guest molecules within the hollow core and mesopore shell and releasing them on…
A convenient approach for the self-assembly of well-defined porphyrin nanowires in water, wherein the individual monomers do not aggregate via pi-pi interactions, is disclosed. These unidirectional and heteromeric assemblies are instead composed of robust beta-CD/adamantane host/guest interactions. A combination of su…
The nonspecific interaction of proteins with surfaces in contact with biofluids leads to adverse problems and is prevented by a biocompatible surface coating. The current benchmark material among such coatings is poly(ethylene glycol) (PEG). Herein, we report on the synthesis of linear polyglycerol derivatives as prom…
We generalize the simplest kinetically constrained model of a glass-forming liquid by softening kinetic constraints, allowing them to be violated with a small rate. We demonstrate that this model supports a first-order dynamical (space-time) phase transition between active (fluid) and inactive (glass) phases. The firs…
The reactivity of the redox-active tetracarboxylic acid derived from the tetrathiafulvalene (TTF-TC)H(4) with alkaline cations (K, Rb, Cs) is reported. The exploration of various experimental parameters (temperature, pH) led to the formation of four crystalline three-dimensional coordination polymers formulated M(2)(T…
Quantum dots of around 20 nm in size are fabricated using local anodic oxidation. The behavior of the smallest dots in a magnetic field (see image) allows the identification of the charge-neutrality point and distinguishing of the states with one electron, no charge, and one hole left inside the quantum dot.
The terbium-tris[(2-hydroxy-benzoyl)-2-aminoethyl]amine complex (Tb-THBA) with its high color purity, long luminescence lifetime, and high quantum yield has been found to be a viable indicator for the optical sensing of temperature. Both its luminescence intensity and its lifetime strongly depend on temperature in the…
Layered hydroxides of (Y 1− x Eu x ) 2 (OH) 5 NO 3 · n H 2 O ( x = 0−1) have been hydrothermally synthesized under the optimized conditions of 120 °C and pH ∼7.0. Eu incorporation yields steadily smaller particles, elongation of the well-developed hexagon platelets, and linearly expanded ab planes of the layered struc…