Materials Literature
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The synthesis of water-soluble near-infrared (NIR)-emitting quantum dots (QDs) has recently received extensive attention for non-invasive detection of biological information in living subjects. Highly fluorescent CdTeS alloyed QDs for biological application are introduced in this paper. QDs were synthesized by a hydro…
The removal of benzene (B) and toluene (T) from aqueous solution by multi walled, single walled, and hybrid carbon nanotubes (MWCNTs, SWCNTs, and HCNTs) was evaluated for a nanomaterial dose of 1 g/l, concentration of 10-100 mg/l, and pH 7. The equilibrium amount removed by SWCNTs (B: 9.98 mg/g and T: 9.96 mg/g) was h…
CO oxidation on Pt nanoclusters of approximately 1 nm in size was studied using density functional theory (DFT). Reaction barriers on various sites of a cuboctahedral 55-atom cluster and of several two-layer plane clusters representing (111) and (100) facets of the 147-atom cluster have been calculated at various cove…
A family of three-dimensional (3D) architectures based on lanthanide-substituted polyoxotungstate building blocks [Ln(HL)(L)(H2O)6{Ln(H2L)0.5(α-PW11O39H)Ln(H2O)4}]2·nH2O (Ln = La, n = 8 (1); Ln = Ce, n = 12 (2); Ln = Pr, n = 8 (3); H2L = 2,5-pyridinedicarboxylic acid) have been successfully synthesized under hydrother…
Two heterometallic thiacalix[4]arene-supported complexes possess a trinary-cubane core composed of one [Ni(2)Ln(2)] cubane unit and two [NaNi(2)Ln] cubane units sharing one Ln(III) ion (Ln = Dy and Tb). Only the Dy(III) complex exhibits slow magnetic relaxation behaviour of single molecule magnet nature.
The photochromic molecule diarylethene works as a "toggle switch" for biocompatible fluorescence polymer dots and enables fluorescence switching in biological samples.
In situ incorporation of mesoporous Al2O3 (meso-Al2O3) into the MCM-41 extraframework without blocking the pores generates an ordered, long range and high surface area mesoporous support Al2O3–MCM-41 (AM). The mesoporous support surprisingly shows high surface area as compared to pristine MCM-41. The incorporation of…
We present a novel pulsed‐train near‐IR diode laser system with real‐time temperature monitoring of the laser‐heated cancer cell mixed in gold nanorod solution. Near‐IR diode laser at 808 nm matching the gold nanorod absorption peak (with an aspect ratio about 4.0) was used in this study. Both surface and volume tempe…
ABA block copolymers composed of highly methylated polyrotaxane and hydrophobic anchoring terminal segments containing 2-methacryloyloxyethyl phosphorylcholine (MPC) and n-butyl methacrylate (PMB) (OMe-PRX-PMB) were synthesized as a platform of molecularly dynamic biomaterials. A contact angle measurement indicated th…
Crystalline solids self-assembled from anionic and cationic porphyrins provide a new class of multifunctional optoelectronic micro- and nanomaterials. A 1 : 1 combination of zinc(II) tetra(4-sulfonatophenyl)porphyrin (ZnTPPS) and tin(IV) tetra(N-methyl-4-pyridiniumyl)porphyrin (SnTNMePyP) gives porphyrin nanosheets wi…
Novel magnetic, pH and redox sensitive microcontainers have been prepared using a sacrificial template-directed synthesis procedure, followed by chemical deposition of magnetic nanocrystals via co-precipitation. The fabricated magnetic microcontainers exert operative pH responsiveness, gradual and controlled collapse,…
Ferroelectricity and piezoelectricity are two of the common ferroelectric material properties, which have widespread observations in many biological systems, and these are referred to as biopiezoelectricity and bioferroelectricity. This paper presents a short overview of the main issues of piezoelectricity and ferroel…
The kinetics of growth for chiral J-aggregates of H(4)TPPS(4) porphyrin have been investigated under different experimental conditions in the presence of tartaric acid. The observed rate constants and the anisotropy factor g show a defined dependence on the enantiomer used as a chiral templating agent.
We report here the application of a medicinally important plant Amaranthus spinosus for the synthesis of gold nanoparticles (AuNPs). Different concentrations of ethanolic leaf extract of the plant were reacted with aqueous solution of HAuCl 4 4H 2 O under mild reaction conditions. Synthesis of AuNPs was confirmed from…
Multifunctional magnetic/upconversion luminescent mesoparticles, consisting of a Fe(3)O(4) nanoparticle core and a LaF(3):Yb(3+), Er(3+) nanocrystal shell, have been developed using a facile co-precipitation approach. Owing to their excellent superparamagnetic properties, superior T(2)-enhanced magnetic resonance effe…
We demonstrate the synthesis of 2D metal nanoparticles (MNPs)/graphene nanocomposites using small cationic surfactants as stabilizers. 2D sandwich-like MNPs/graphene nanocomposites with a uniform distribution of MNPs can be achieved via a one-pot in situ growth and reduction protocol.
A novel inorganic-organic hybrid film structure based on polyoxometalate and conventional organic dye has been fabricated, whose fluorescence can be reversibly switched using the electrochromic component to activate or suppress the related fluorescence quenching mechanism upon applying reduction or oxidation potential…
High quality triethanolamine-coated Fe3O4 nanocrystals can be prepared by a novel complex-coprecipitation route based on the use of triethanolamine as ligands to the iron precursors. These nanocrystals show high saturation magnetizations and excellent Cr(VI) removal performances.
Graphene oxide/polypropylene (GO/PP) nanocomposites were fabricated by varying the concentration of GO in the presence of octyltriethoxysilane (OTES) using an internal batch mixer to enhance the anti-scratch properties of pristine PP. Mechanical properties, including hardness, elastic modulus, and fracture toughness,…
In this study, we demonstrate a realization of a favorable modification of band structures and an apparent increase in the density of state effective mass in β-Zn4Sb3 compound by introduction of a slight amount of Ge at the Zn site, in a manner of adding a shape peak below the valence band edge and giving rise to a si…