Materials Literature
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We, the named authors, hereby wholly retract this RSC Advances article. Signed: Huajun Qiu, Liang Li, Qiaolin Lang, Feixue Zou and Xirong Huang, China, September 2012. Retraction endorsed by Sarah Ruthven, Managing Editor. Retraction published 26 September 2012.
Fluorescent polymer nanoparticles have been prepared by emulsion polymerization with a polymerisable anthrapyridone dye. This connects covalently to the polymer chains, preventing dye leakage. Amino groups were introduced into the nanoparticles by grafting with PEI (polyethyleneimine), following which folic acid was a…
Reversible fluorescence photoswitching of RSA-AZO dyad 1 was clearly demonstrated in an acidic aqueous solution. The fluorescence photoswitching mechanism is based on the reversible ring opening/closing reactions of the RSA unit induced by a photochromic pK(a) change along with the photoisomerization of the AZO unit.
The preparations and structures are described of four new polyoxostibonates, [Co(p-MeC(6)H(4)Sb)(12)O(28){Co(H(2)O)(3)}(4)]Cl(2)·6H(2)O, [Co(p-ClC(6)H(4)Sb)(12)O(28){Co(H(2)O)(3)}(4)]Cl(2)·22H(2)O, (PhCH(2)NMe(3))(2)[Zn(p-ClC(6)H(4)Sb)(12)O(28)Zn(4)Cl(2.54)Br(1.46)]·8MeCN·H(2)O and [BaCoH(4)(p-MeC(6)H(4)Sb)O(28)]·5H(2…
The bubble electrospinning is used to produce nanoparticles from several nano-meters to several hundred nanometers in diameter. Silk fibroin aqueous solution with low concentration is used in the experiment. The spinning process can be well controlled by temperature.
Micrometer-sized gold nanosheets (Au-NSs) were directly deposited on a large-scale at a solid–liquid interface using a modified solid matrix (SM) method. The reducing agent and the stabilizer were in the solid phase, and the oxidizing agent (HAuCl4) with an acetate ion as an additional stabilizer was in the aqueous ph…
Nano-composite, perovskite Ba(1- x - y)Sr(x)TiFe(y)O3, denoted as (BSTFe) in powder form was derived via sol-gel (SG) method followed by sintering at fixed temperature 750℃ for one hour. The chemical composition, morphology and structure of the powder samples were investigated by using X-ray diffraction (XRD), transmi…
The enthalpy recovery of an Epoxy/Carbon Nanotube systems (E/CNT) manufactured at low nanotube content, have been investigated by using Differential Scanning Calorimetry. Two different nanotube concentration were considered, 0.5 and 0.1 w/w and results compared with the behaviour of the neat epoxy material. Final resu…
ON BLENDS BASED ON PDLLA AND PVP. Poly(D,L-lactide), PDLLA, is a polymer with potential applications in medical, environmental, and pharmaceutical areas. Despite its versatility, the hydrophobicity limits its applications. To overcome this problem, one strategy is the preparation of blends with hydrophilic polymers su…
Dichroic optical spectroscopies and theoretical modelling have been used to describe the structure of aggregates of porphyrins in their gels in terms of: (i) the formation of helicoidal structures, (ii) the sign of the handedness, (iii) their extent and degree of structural order, and (iv) the annealing of the structu…
Hexanitrostilbene (HNS) is a secondary explosive with attractive properties for detonator usage, including thermal stability, good safety properties and easy initiability. It is desirable to characterize the shock initiation of detonator explosives to enable optimization of system parameters. HNS is a suitable explosi…
Probing chemical events can be achieved by several forms of readout. Very popular among designers of responsive probes is an optical/fluorescent output, and their operation in a truly binary off–on mode is greatly desired in view of the associated maximal signal-to-background ratio and detection simplicity. Promotion…
Short period superlattices comprising alternating InO2− and GaO+(ZnO)2 layers were fabricated by a simple hybrid solution process and reactive solid-phase epitaxy at high temperature. The epitaxial ZnO buffer layer deposited by sputtering, and an amorphous IGZO layer fabricated from a solution mixture of 1 : 1 : 1.0 (…
In this study, a new facile synthetic route was developed to prepare polyimidothioethers–nanocrystalline-titania (PITEs–TiO2) hybrid optical films with a high titania content (up to 50 wt%) and thickness (15 ± 3 μm) from soluble PITEs containing hydroxyl groups. A series of organosoluble PITEs were prepared from the h…
Abstract—We numerically studied the spectrum of Cherenkov optical radiation by a nonrelativistic anisotropic electron bunch crossing 3D dispersive metamaterial. A practically important case when such a medium is described by Drude model is investigated in details. In our theory only parameters of a metamaterial are fi…
A thermodynamic model for the growth of a reaction rim with lamellar internal microstructure is derived. Chemical mass transfer across the rim and the chemical segregation within the reaction fronts, at which the lamellar microstructure is produced, are considered as the only dissipative processes involved in rim grow…
The optical properties and photovoltaic characterization of CdS quantum dots sensitized solar cells (QDSSCs) were studied. CdS QDs were prepared by the chemical solution deposition (CD) technique. Photoacoustic spectroscopy (PA) was employed to study the optical properties of the prepared samples. The sizes of the CdS…
The technique of high-pressure crystallisation from solution has been applied to the study of α-cyclodextrin hydrate formation. A previously unobserved hydrate, here termed Ib, has been obtained at 0.65 GPa and characterised by single-crystal X-ray diffraction using synchrotron radiation. This form exhibits a combinat…
Nonamphiphilic hyperbranched polyoximes (HPOXs) were successfully synthesized by the polycondensation of trialdehyde and bis-aminooxy monomers with different molar feeding ratios. Various characterization techniques, such as 1D and 2D nuclear magnetic resonance (NMR), Fourier transform infrared spectroscopy (FTIR), an…
The formation mechanism is always a fundamental and confused issue for polyoxometalate chemistry. Two formation mechanisms (M1 and M2) of the Lindqvist anion [W(6)O(19)](2-) have been adopted to investigate it's self-assembly reaction pathways at a density functional theory (DFT) level. The potential energy surfaces r…