Materials Literature
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The aza-semi-crown pentadentate ligand rigidified by pyridine and piperidine rings was designed and synthesized. It can react with Mn(II) in water to form complex with improved longitudinal relaxivity, leading to efficient signal intensity enhancement of vascular vessels under a clinical magnetic resonance imaging sca…
Poly(p-phenylene benzobisoxazole) (PBO) fibers are some of the strongest organic polymer fibers, however, even stronger fibers can be made using carbon nanotubes (CNTs). In the present study, the copolymerization of functionalized CNTs with PBO was successfully carried out by one-pot in situ polycondensation in polyph…
A smart fluorescent drug carrier based on hollow mesoporous silica (HMS) nanoparticles was prepared step by step. First, HMS nanoparticles were doped with lanthanide rare-earth nanocrystals (YVO4:Eu3+). Then the surface of HMS@YVO4:Eu3+ was modified by octadecyltrimethoxysilane (C18). Afterwards, it was coated by desi…
We report the synthesis, characterization and application of highly water-soluble fluorescein-polyethyleneimine (PEI) coated gadolinium oxide (Gd2O3) nanoparticles to magnetic resonance imaging (MRI) and cell labeling (CL). The average particle diameter and average hydrodynamic diameter were estimated to be 3.92 and 7…
Supramolecular hybrid materials of graphene oxide (GO) with octadecylamine or dodecylamine have been fabricated by a simple self-assembly technique at room temperature. Many characterization methods have been used to research the micelle-like nanostructures. Compared to unmodified GO, the alkyl-functionalized graphene…
Brillouin spectroscopy has been used to study the vibrational dynamics of clusters of spherical polystyrene (PS) particles with different size. In a first approximation, the spectra can be described by a single particle model within the continuum approximation of the Lamb theory. The model yields excellent results for…
Linear organogelators 1 and 2, which self-assemble cooperatively into fibrillar structures, act as efficient crystal growth media for common pharmaceutical ingredients like ASP, CAF, IND and CBZ.
Eight bis(salicylaldiminato)tin(II) complexes have been synthesized from the reaction of Sn[N(SiMe(3))(2)](2) and 2 equiv of the corresponding ligands at room temperature. The ligands, synthesized from salicylaldehyde and amines, were designed to have different electronic and steric properties using different amines t…
The effect of forming additional covalent cross-links on the thermo-reversible network structure of ionic elastomers was evaluated. Ionic elastomers are characterized by a strong physically cross-linked network resulting from a phase separation of ionic-rich nano-domains. The ionic domains are formed by the associatio…
We succeeded in simple and rapid synthesis of surface-modified monoclinic ZrO2 nanoparticles using a supercritical hydrothermal method. The precursor Zr(OH)4 was treated in the presence of various surface modifiers with carboxyl group (–COOH) in a batch-type reactor at 400 °C for 10 min. Oleic, sebacic, dodecanedioic,…
Strontium can be substituted into the calcium sublattice of hydroxyapatite without a solubility limit. However, recent ab initio simulations carried out at 0 K report endothermic nature of this process. There is also striking discrepancy between experimentally observed preference of Sr doping at Ca-II sites and the fi…
Oxoporphyrinogens (OxPs) bind water molecules at pyrrolic NH and quinonoid carbonyl groups leading to visible colour changes due to variation in the π-electronic structure of OxPs. Introduction of hydrophilic substituents at two pyrrole NH groups improves sensitivity to H(2)O, and one OxP derivative is a colorimetric…
The engineered spider silk protein eADF4(C16) reveals similarities to amphiphilic block copolymers. Drop cast of protein solutions on different hydrophobic as well as hydrophilic templates out of different starting solvents (hexafluoroisopropanol, formic acid and aqueous buffers) generated silk films varying in struct…
Prolate model colloids with defined properties can be obtained by the stretching of spherical polymeric particles, which is well-known for polystyrene and poly(methyl methacrylate) latices. The present study aims to extend this approach to functional core–shell particles in order to achieve a new class of anisotropic…
We report a new class of rapid solution processes for fabricating highly uniform chemically derived graphene thin films with control over the thickness on the subnanometre scale. The film deposition directly on various substrates is driven by dragging a meniscus of microlitre graphene oxide (GO) suspension trapped bet…
A promising method of hydrogen compression driven by low-grade heat and not requiring the usage of moving parts, is the application of metal hydrides (MH). However, being upscaled to higher productivities necessary for industrial processes (≥1 m3 H2/h STP), the method will inevitably meet a number of problems related…
A new chemodosimeter for a G-type agent that exploits norbornene derived terpyridine (NDT)-lanthanide unique emission is reported. The unusual emission between terpyridine and norbornene motifs of NDT is attributed to the significant difference in the position of the HOMO and LUMO wave functions that prevents the non-…
A facile and rapid route for the synthesis of uniform single-crystal copper nanowires by a microwave-assisted method is demonstrated. The as-prepared copper nanowires exhibit excellent conductivity, which is comparable with electrospun copper nanofibers.
Two novel highly soluble triarylamine dendrimers TPAD1 and TPAD2 with N4,N6-dibutyl-1,3,5-triazine-4,6-diamine probe were synthesized via normal synthetic routes. Both dendrimers (TPAD1 and TPAD2) form H-bonded donor–acceptor–donor (D–A–D) supramolecular triads TPAD1-PBI-TPAD1 and TPAD2-PBI-TPAD2 with 3,4,9,10-perylen…
We report on two types of poly(methacrylic acid) (PMAA)-based hydrogel microcontainers (capsules) of cubical shape with distinctly different shape responses upon pH variations. The microcontainers were prepared as replicas of cubical inorganic templates through chemical cross-linking of hydrogen-bonded layer-by-layer…