Materials Literature
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This work focuses on characterization of chiral organic systems with partial solid solutions. Particularly, behavior of the ( R )- and ( S )-ethanolammonium 3-chloromandelates (E3ClMA) has been investigated experimentally. Partial solid solutions of the series ( R )-E3ClMA–(Rac)-E3ClMA and ( S )-E3ClMA–(Rac)-E3ClMA we…
We investigate the phase stability of Na${}_{1/2}$Bi${}_{1/2}$TiO${}_{3}$, a prototype lead-free relaxor material, under pressure. By means of total energy calculations within density functional theory, we study the pressure stability of several structures with polar and antipolar distortions, in-phase and out-of-phas…
Magnetic nanoparticles offer potential advances in cancer treatment. One example is cancer theranostics, which refers to the combination of a diagnostic tool, i.e., magnetic resonance (MR) imaging, and therapeutic entities such as drugs, oligonucleotides, antibodies, and peptides. They can be conjugated with bioactive…
The synthesis and characterization of 5-(chromen-4-one)-dipyrromethane (1), 5-(6-methyl-chromen-4-one)-dipyrromethane (2), 5-(6-isopropyl-chromen-4-one)-dipyrromethane (3) and the respective chromans, 7-[2-pyrrolo]-pyrrole[1,2-a]12H pyrrolino[2,3-b]chroman-4-one (4), 4-methyl-7-[2-pyrrolo]-pyrrole[1,2-a]12H pyrrolino[…
Quantum dots (QDs) have not been used to label cytoskeleton structure of live cells owing to limitations in delivery strategies, and QDs conjugation methods and issues with nonspecific binding. We conjugated tubulin to QDs and applied the emerging method of photothermal nanoblade to deliver QD-tubulin conjugates into…
We have demonstrated that the iridium-catalyzed direct borylation of hexa-peri-hexabenzocoronene (HBC) enables regioselective introduction of boryl groups to the para-, ortho-, and meta-substituted HBCs in high yields. The boryl groups have been transformed into various functionalities such as hydroxy, cyano, ethynyl,…
AIM: To encapsulate the nucleoside gemcitabine (GEM) in novel PEGylated polymeric nanocapsules (NanoGEM). MATERIALS & METHODS: The biological activity of NanoGEM was tested both in vitro and in vivo in comparison with the free drug. The NanoGEM was made of polylactic acid and allowed the entrapment of a great amount o…
Diatoms developed a variety of mechanisms to form chain‐like colonies, resulting in diverse morphologies and bulk mechanical properties. These properties affect translation, rotation, and deformation of colonies in ambient flows as well as their susceptibility to breakage by flow‐ and grazer‐induced forces. Morphologi…
Abstract Magnetically separable catalysts were prepared and employed for the epoxidation of olefins with hydrogen peroxide. In all cases the magnetic core was firstly covered with a silica layer to prevent iron ion‐initiated decomposition of hydrogen peroxide. The catalytic active species, an ionic liquid‐type peroxot…
In this review paper the current state of research into the physical degradation of polymer films is elucidated. Modern applications of polymer films and the implication of their degradation are discussed. Recent investigations into solid interactions such as abrasion, adhesion, fatigue and other failure modes as well…
Silicon carbide nanotubes possess outstanding properties which enable them to have many applications. The buckling behaviour of silicon carbide nanotubes have been studied here. To do this, a 3D finite element method, known as space frame model has been proposed. Molecular mechanics are linked to density functional th…
Small, compact, and highly symmetric cube-octameric silsesquioxanes have recently attracted increased attention as scaffolds for tailor-made bioconjugates. The expanded arsenal of effective conjugation methods (CuAAC, TEC, oxime ligation) allows one to decorate these nanoparticles bearing up to eight addressable organ…
Linking monomeric perylenebisimide units to form dimers and trimers dramatically increased alignment in a nematic liquid crystalline host. Connecting units via flexible cross-linkers destroyed alignment: a rigid linker is necessary. Applying the fluorescent trimer dye in a switchable window greatly improved the contra…
In this work, an optofluidic SERS device optimized for on-site analytics in the field is utilized for the multiplexed detection of three fungicides that are highly regulated in aquaculture. The optofluidic SERS microsystem does not require a bulky pump for sample loading, which significantly improves its portability;…
The solubilities of (2 R,3 S,4 R )-2,3,4,5-tetrahydroxypentanal (xylose), (2 R,3 R,4 R,5 R )-2,3,5,6-tetrahydroxy-4-[(2 R,3 R,4 S,5 S,6 R )-3,4,5-trihydroxy-6-(hydroxymethyl)oxan-2-yl]oxyhexanal hydrate (maltose monohydrate), (2 R,3 S,4 S,5 R,6 R )-2-(hydroxymethyl)-6-[(2 R,3 R,4 S,5 S,6 R )-3,4,5-trihydroxy-6-(hydrox…
The interaction between two spherical polymer brushes in solvents of variable quality is studied by molecular dynamics simulation and by self-consistent field theory, varying both the radius of the spherical particles and their distance, as well as the grafting density and the chain length of the end-grafted flexible…
Recycling: A self-contained procedure for the recycling of BNH-waste, based on the three major steps: polymer break-up, amine supported catalytic hydrodehalogenation of boron halogens, and the base exchange in borane amine adducts, is developed (see picture). Beyond the original task of recycling spent ammonia borane,…
Enhanced near band gap edge (NBE) emissions of PVA-ZnO nanoparticles were achieved by employing SiO(2)-Au core/shell nanostructures whereas the defect-level emission (DLE) is greatly suppressed. A maximum enhancement of nearly 400% was observed using SiO(2)-Au for the emission with optical resonance at 554 nm. SiO(2)-…
Dual color fluorescence cross-correlation spectroscopy (DC FCCS) experiments were conducted to study the coalescence and aggregation during the formation of nanoparticles. To assess the generality of the method, three completely different processes were selected to prepare the nanoparticles. Polymeric nanoparticles we…
The crystallization process of vanillin in a 1-propanol/water system was investigated. It was found that liquid–liquid phase separation, also termed oiling out, will happen under some conditions. To fully understand this process, the oiling out as well as the following nucleation and crystal growth of this compound we…