Materials Literature
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The light emission properties of semiconductor nanoparticles are important for their applications in optical imaging, sensors, or lasers. ZnS nanoparticles are particularly useful for these applications, but the main hindrance for their widespread use are the low emission properties of pure ZnS nanoparticles. Formatio…
A novel method was developed to synthesize reduced graphene oxide/alumina nanocomposite ( RGO / Al 2 O 3 ) by in situ depositing Al 2 O 3 nanoparticles on graphene oxide flakes by a dry sol–gel process. The scanning electron microscopy and energy dispersive X‐ray spectroscopy investigations results showed that Al 2 O…
In this study, we have developed highly efficient thermoelectric materials based on p-type and n-type composite films of Si nanocrystals and Ni silicide nanocrystals. The heavy doping of the films with boron or phosphorus and thermal annealing of the films caused formation of nanocrystals with high electrical conducti…
Collagen is ubiquitous throughout the animal kingdom, where it comprises some 28 diverse molecules that form the extracellular matrix within organisms. In the 1960s, an extracorporeal animal collagen that forms the cocoon of a small group of hymenopteran insects was postulated. Here we categorically demonstrate that t…
CONTEXT: Oxidative stress and inflammation are related to several chronic diseases including cancer and atherosclerosis. Arisaema tortuosum (Wall.) Schott (Araceae) is an Indian folk medicinal herb traditionally used for treatment of various diseases related to inflammation and stress. OBJECTIVE: This study was carrie…
Abstract A series of polypropylenes (PPs) grafted with maleic anhydride (MA), prepared by reactive extrusion in a twin screw extruder with different contents of peroxide and MA, was characterized. For each sample, the amount of grafted MA, the molecular weight distribution, the viscoelastic properties in small amplitu…
Ultralong isolated single-walled carbon nanotubes (SWCNTs) were synthesized on a SiO₂/Mo mesh to fabricate long individual suspended SWCNT samples. We detected a delicately temperature dependent Raman RBM, G and G' band frequency shift and linewidth increase of these SWCNTs in the range of 240-600 K. Softening of forc…
Carboxylated cellulose nanocrystals with varying charge densities, ranging from ca. 270 to −1100 mmol/kg, were prepared via partial functionalization of 1100 mmol/kg carboxylated CNCs with different equivalents of propylamine. Incorporation of these differently charged nanofillers into poly(vinyl acetate) produced a s…
Molecular beam epitaxy growth of merging InAs nanowire intersections, that is, a first step toward the realization of a network of such nanowires, is reported. While InAs nanowires play already a leading role in the search for Majorana fermions, a network of these nanowires is expected to promote their exchange and al…
ABSTRACT In this study, hydrolytic degradation of silk fibroin (SF) in Phosphate buffer saline (PBS) after 12 weeks incubation was investigated. Fourier transform infrared spectroscopy (FTIR), Raman spectroscopy and X‐ray diffraction (XRD) patterns have confirmed the transition from crystalline β‐sheet to random coil…
To control the activity of singlet oxygen ((1)O2) generation by photosensitizer through interaction with DNA, the electron- donor-connecting water-soluble porphyrin, meso-(9-anthryl)tris(N-methyl-p-pyridinio)porphyrin (AnTMPyP), was designed and synthesized. Molecular orbital calculation speculated that the photoexcit…
In this study, we developed a method for the dual functionalization of a poly(ε-caprolactone) (PCL) surface by means of the supramolecular assembly technology. Polyethylene glycol (PEG), with resistance to protein adsorption, and TPSLEQRTVYAK (TPS) peptide, which can specifically bind endothelial progenitor cells (EPC…
Naturally occurring β-methylstyrenes, such as anethole (Ane), isosafrole (ISa), methyl isoeugenol (MIEu), and acetyl isoeugenol (AcIEu), which are phenylpropanoids and possess electron-donating alkoxy substituents on an aromatic ring, were copolymerized with common acrylic monomers, such as methyl (MA), n-butyl (nBA),…
To completely overcome three critical disadvantages of traditional intumescent flame retardants, a unique hybridized intumescent flame retardant (HPSi-IFR) with three-dimensional structure was synthesized, which has amine groups and Si and P elements. HPSi-IFR has very high thermal stability under either a nitrogen or…
Transparent conducting oxides (TCO) are a critical component of many organic electronic devices including organic solar cells and light-emitting diodes. In this Perspective, we discuss what we have learned from our theoretical investigations, at the density functional theory (DFT) level, of the electronic structures o…
A new phenylboronic acid based gelator was developed to prepare low-molecular-weight organogel (LMOG), which could interact with several solvents to assemble into a three-dimensional nanofiber network. (1)H NMR spectroscopy study suggests that the driving force for the gelation includes hydrogen bonding and π-π stacki…
UV responsive microcapsules containing azobenzene were fabricated by sequential deposition of oppositely charged poly[1-[4-(3-carboxy-4-hydroxyphenylazo)benzenesulfonamido]-1,2-ethanediyl, sodium salt] (PAZO) and poly(diallyldimethyl ammonium) chloride (PDADMAC). As found in this work, combination of PDADMAC and PAZO…
We describe here the synthesis, characterization, bioconjugation, and application of water-soluble thioglycolic acid TGA-capped CdTe/CdS quantum dots (TGA-QDs) for targeted cellular imaging. Anti-human epidermal growth factor receptor 2 (HER2) antibodies were conjugated to TGA-QDs to target HER2-overexpressing cancer…
BACKGROUND: The exact role of primary nanoparticle (NP) size and their degree of agglomeration in aerosols on the determination of pulmonary effects is still poorly understood. Smaller NP are thought to have greater biological reactivity, but their level of agglomeration in an aerosol may also have an impact on pulmon…
A series of dinuclear cobalt complexes of general formula [Co(Mentpa)(diox-S-diox)Co(Mentpa)](PF6)2·MeOH (n = 0, 2, 3) was prepared through the synthesis of the bis-bidentate ligand 6,6'-((1,4-phenylenebis(methylene))bis(sulfanediyl))bis(3,5-di-tert-butyl-benzene-1,2-diol) (diox-S-diox). The ancillary ligands Mentpa a…