Materials Literature
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We prepared two Janus dendrimers 1 and 2 bearing a hydrophobic Percec-type minidendron (i.e., 3,4,5-tridodecyloxybenzyl group) and hydrophilic aliphatic ether dendrons with different degrees of branching via stepwise click reactions. The obtained Janus dendrimers have the same hydrophilic volume fraction (f = 0.34), b…
Two chiral tetradecanuclear hydroxo-lanthanide clusters of composition Ln14(µ4-OH)2(µ3-OH)16(µ-η2-acac)8(η2-acac)16·6H2O, where Ln = Dy 1, Tb 2 and acac = acetylacetonato, have been prepared and characterized by X-ray crystallographic, magnetic and spectroscopic methods. They crystallize in chiral monoclinic space gro…
BACKGROUND: Despite significant research efforts on cancer therapy, diagnostics and imaging, many challenges remain unsolved. There are many unknown details regarding the interaction of nanoparticles (NPs) and biological systems. The structure and properties of gold nanoparticles (GNPs) make them useful for a wide arr…
Iron (Fe) availability restricts diatom growth and primary production in large areas of the oceans. It is a challenge to assess the bulk Fe nutritional health of natural diatom populations, since species can differ in their physiological and molecular responses to Fe limitation. We assayed expression of selected genes…
Glucose sensitive and autofluorescent protein coated mesoporous silica nanoparticles are synthesized through a layer-by-layer technique. The resulting nano-composites can be adhered to the surface of a cell and embedded into the cell membrane. These unique features make this nanocomposite a good candidate as cell mark…
Spiropyran dye-modified multi-walled carbon nanotubes have been synthesized and used to regulate horseradish peroxidase activity by light irradiation. This design has been developed for a label-free colorimetric assay of lysozyme with a direct detection limit of 30 nM.
Five new V-shaped acids derived from 1,3,4-oxadiazole are described. These compounds were used to prepare supramolecular complexes via hydrogen bonding interactions with 2,4-diamino-6-dodecylamino-1,3,5-triazine in a 3 : 1 ratio. The formation of the complexes was evidenced by infrared and NMR techniques. All the comp…
Water-soluble trifunctional nanoparticles (NPs) with thermoresponsive, magnetic and fluorescent hybrid, Fe3O4@SiO2-PNIPAM, were prepared via surface-initiated reversible addition-fragmentation chain transfer (RAFT) polymerization, using fluorescent RAFT agent-functionalized magnetic silica NPs as the chain transfer ag…
A dendrimer with a [Ru(bpy)(3)](2+) (bpy = 2,2'-bipyridine) complex as a core and four diphenylanthracene units at the periphery was prepared from a scaffold based on a bipyridyl ligand bearing four terminal alkyne groups. Upon green light excitation, the dendrimer shows blue luminescence even in a rigid matrix at 77…
Hollow particles of sporopollenin from spores of the plant Lycopodium clavatum have been prepared. These particles possess ionisable groups on their surface such that they become increasingly negatively charged with an increase in pH. The particles adsorb to both air–water and oil–water interfaces, stabilising liquid…
2D arrays of Au-PNIPAM core-shell nanocrystals were fabricated using convective deposition and spin-coating. The particle density and ordering were studied by AFM. Annealing at 700 °C removes the polymer shell, while retaining a monolayer of well-separated gold nanoparticles. The surface plasmon modes of the colloid m…
This communication describes a novel strategy for the synthesis of silica Janus particles with controlled shape and functionality using a facile wet-chemical approach.
Polyelectrolytes are promising materials as gate dielectrics in organic electrochemical transistor. On the other side, the fibre form transistor has become one of the most interesting topics in the field of smart textiles. The use of PEDOT:PSS to realize a parallel wire electrochemical textile transistor has been repo…
Highly refractive thianthrene-based poly(phenylene sulfide)s (TPPSs) have been developed. The TPPSs were prepared from 2,7-difluorothianthrene and dithiols, including 4,4′-thiobisbenzenethiol (TBBT), m-benzenedithiol (mBDT), or sodium sulfide nonahydrate based on aromatic nucleophilic substitution reactions, and showe…
The effects on performance of commercially produced solid oxide fuel cell (SOFC) were evaluated for two types of cathode infiltration: a mixed ionic-electronic conductor and an electronic insulator. The bi-layered cathode backbone consists of a thin, dual-phased functional layer containing Sm 2 O 3 -doped CeO 2 (SDC)…
The aggregation-induced emission (AIE) of a 1,2-diphenyl-1,2-di(p-tolyl)ethene (TPE) was explored as a novel fluorescence method for probing the assembling/disassembling of amphiphilic molecules. The fluorescence intensity was able to monitor the formation of micelles and determine the critical micelle concentration (…
CoFe2O4 hollow fibers have been fabricated by direct annealing of electrospun polyvinylpyrrolidone (PVP)/nitrate salts composite nanofibers. In this approach, composite fibers were firstly synthesized by electrospinning PVP/nitrate salts solution, and then calcined at high temperature with appropriate heating rate to…
Following our recent findings on achieving invisibility and transparency using low-profile mantle cloaks, we propose a practical implementation of an RF cloak made of a simple metallic helical sheath, whose anisotropic surface impedance can provide scattering cancellation for dielectric cylinders over a moderately bro…
Controlled assembly of gold nanorods induced by Na(3)PO(4) leads to a significant amplification of localized surface plasmon resonance (LSPR) signals. The strong affinity between Au and Hg alters the coupled LSPR signals due to the amalgamation of Hg and Au. This allows detection of Hg in aqueous solutions with ultra-…
This paper reports the development of electrospun zein fibers with improved water stability and tensile strength for potential drug delivery. The low morphological stability in aqueous environment and poor mechanical properties in dry and wet states have restricted the applications of electrospun protein materials, th…