Materials Literature
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A photocatalytic, superhydrophilic, transparent, porous TiO2 film consisting of rice-shaped nano/mesostructures deposited on glass substrates by electrospinning has been developed. Optical properties such as transmittance and absorbance, as well as the superhydrophilicity and self-cleaning properties (photocatalysis)…
This study reports a novel strategy of preparing graphene composites by employing graphene oxide as precursor and oxidizer. It is demonstrated that graphene oxide can oxidize stannous ions to form SnS2 and is simultaneously reduced to graphene, directly resulting in the formation of SnSx–graphene (1 < x < 2) nanocompo…
Ni(III)-intermediates are trapped by EPR and UV/Vis spectroscopy in the reaction of a Ni(II) salt with mCPBA. On the basis of their oxo-transfer and hydrogen-atom abstraction abilities the intermediates are assigned as the elusive terminal Ni(III)-oxo/hydroxo species. The findings suggest that Ni(III)-O(H) moieties ar…
Cubic nanocrystalline CdS was hydrothermally transformed into hexagonal CdS in the presence of Na3PO4 at 180 °C for 12 h. The as-prepared CdS samples were characterized by transmission electron microscopy (TEM), high-resolution transmission electron microscopy (HRTEM), X-ray diffraction (XRD), BET, electrophoretic ana…
We improve the photocatalytic effect of Ag2S under visible light by using fullerene modified with Ag2S nanoparticles. Surface areas and pore volumes of the Ag2S–fullerene samples showed catastrophic decreases due to the deposition of Ag2S. The generation of reactive oxygen species was detected through the oxidation re…
A comparison of grazing incidence wide-angle X-ray scattering (GiWAXS) and differential scanning calorimetric measurements (DSC) was used to identify the influence of a dominantly amorphous small band gap polymer material poly[2,6-(4,4-bis-(2-ethylhexyl)-4H-cyclopenta[2,1-b;3,4-b′]dithiophene)-alt-4,7(2,1,3-benzothiad…
The first examples of thermally stable molecular dihydrogen adducts of nickel were synthesized from their dinitrogen adduct precursors, which are themselves among the first examples of Ni(II)-N2 complexes. The minimal activation of the bound N2 moieties suggests that these adducts are stabilized predominantly through…
Mesocrystalline Cu2O hollow nanocubes (MCHNs) were successfully prepared by a facile reduction reaction under room temperature. CuCl2 played a dual role as both copper source and morphology controlling reagent for the oriented aggregation of primary Cu2O crystallites toward MCHNs. Due to the high crystallinity and hig…
A novel drug carrier with dual triggerable release properties based on keratin graft poly(ethylene glycol) (keratin-g-PEG) copolymers is reported. Keratin-g-PEG copolymers with different graft densities are synthesized through thiol–ene click chemistry. Taking advantage of the amphiphilicity and the thiol groups of th…
Here we show that commonly employed Stöber type fluorescently labelled silica nanoprobes degrade by hydrolytic dissolution, accelerated under biological media conditions as compared to water alone. We have thus developed a method to greatly improve their stability under such conditions.
The effect of Cr-doping on the structural, physical and electrochemical properties of Li 2 MnO 3 and LiNi 0.5 Mn 0.5 O 2 is reported. The formation of the solid solution and local distortion of the structure with the increase in Cr doping (0.7Li 2 MnO 3 − 0.3LiNi 0.5 Mn 0.5 O 2 ) was confirmed respectively, by X-Ray d…
A new ratiometric and colorimetric fluorescent probe for the highly selective, sensitive and facile detection of Hg(2+) has been rationally developed.
We simulate the homogeneous nucleation of ice from supercooled liquid water at 220 K in the isobaric-isothermal ensemble using the MW monatomic water potential. Monte Carlo simulations using umbrella sampling are performed in order to determine the nucleation free energy barrier. We find the Gibbs energy profile to be…
The state of research on developing fuel options for next-generation chemical propulsion is reviewed for aviation fuels and energetic fuels. For aviation fuels, the development is based on considerations of cost, energy security, and climate change, with Fischer–Tropsch synthetic fuels and biofuels hold potential as a…
The increasing electron-donating ability of the donor part is focused to further optimize the light-harvesting capability. Our strategy is to introduce an additional donor group into the indoline unit in the donor part to form a donor–donor structure (D–D moiety). Three different units (carbazole, fluorene and 4-methy…
Spatial patterning of proteins (extracellular matrix, ECM) for living cells on polyacrylamide (PA) hydrogels has been technically challenging due to the compliant nature of the hydrogels and their aqueous environment. Traditional micro-fabrication process is not applicable. Here we report a simple, novel and general m…
A new turn-on fluorescent probe for fast detection of cysteine in physiological conditions, based on a new response-assisted electrostatic attraction strategy, is reported. The practical utility of the probe in fluorescent protein labeling and subcellular imaging is also demonstrated.
A selective and sensitive turn-on fluorescent NIR probe for cysteine has been developed. Cleavage of 2,4-dinitrobenzenesulfonyl (DNBS) with thiols switches the weakly fluorescent aza-BODIPY dye (λ(em) = 734 nm, Φ(f) = 0.03) to a strongly fluorescent species in the NIR region (λ(em) = 755 nm, Φ(f) = 0.14).
A nano-sized graphene oxide-photosensitizer conjugate with a redox-responsive cleavable disulfide linker is non-fluorescent and non-phototoxic, even upon light irradiation. It becomes highly fluorescent and phototoxic inside cancer cells, where glutathione is used as an initiator for activating the photosensitizer.
Low-molecular-weight poly(propylene carbonate)s bearing –OH groups at both ends (PPC-diols) are prepared by feeding protic chain-transfer agents (1,2-propanediol, terephthalic acid, 2,6-naphthalenedicarboxylic acid, and phenylphosphonic acid) in the CO2/propylene oxide copolymerization catalyzed by a highly active Sal…