Materials Literature
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Luminescent lanthanide complexes incorporating Yb(3+) and Nd(3+) are attracting much attention as imaging agents, but there have been few practical methods to make responsive sensors with these complexes. Here, we introduce a general strategy to synthesize near-infrared luminescent probes by conjugating a Yb(3+) chela…
Excited-state conversions were observed from a series of twisted pyrene-substituted tridurylboranes, corresponding to a locally excited (LE) state, a more planar charge transfer (CT) state with a higher fluorescence quantum efficiency, and a more twisted CT state.
Phase-pure samples of sodium rare-earth phosphate tungstates Na(2)RE(PO(4))(WO(4)) (RE = Y, Dy-Lu) and Na(2)Y(PO(4))(WO(4)):Ln(3+) (Ln = Eu, Tb) were obtained by reaction of the respective rare-earth oxide with ammonium hydrogen phosphate with sodium tungstate Na(2)WO(4)·2H(2)O as a flux at 1220 K. According to X-ray…
Hexaazatriphenylene triimides (HAT) have been shown to be a novel class of disk-shaped π electron acceptors that pair with donors with complementary shape and electron demands, such as triphenylene (TP) derivatives. The donor–acceptor (DA) pair forms a strong charge-transfer complex in CH2Cl2 with an association const…
With the goal of obtaining renewable diols and polyols for polyurethane (PU) technology, the thiol–yne coupling reaction was applied to alkyne-derivatized fatty acids derived from naturally occurring oleic and 10-undecenoic acids. The resulting monomers were then polymerized with 4,4′-methylenebis(phenylisocyanate) to…
Two new isostructural mixed metal selenites, PbMSeO(6) (M = Mo(6+) or W(6+)), that are only composed of second-order Jahn-Teller (SOJT) distortive cations have been synthesized by standard solid-state reaction techniques using PbO, SeO(2), and MoO(3) (or WO(3)) as reagents. The structures of the reported materials wer…
In this paper, large-scale Eu 2 O 3 microwires with great length were successfully fabricated by a simple and facile electrodeposition and a subsequent heat-treatment. The morphology and structure of the as-deposited and the annealing microwires were studied in detail by SEM, EDS, XPS and TEM, and the results indicate…
Electrode materials are key components for fiber solar cells, and when combined with active layers (for light absorption and charge generation) in appropriate ways, they enable design and fabrication of efficient and innovative device structures. Here, we apply carbon nanotube yarns as counter electrodes in combinatio…
A new noncentrosymmetric polar iodate material, ZnIO(3)(OH), has been hydrothermally synthesized as crystals and pure powders by using ZnO (or Zn(CH(3)CO(2))(2)·2H(2)O), HIO(3), and water. Single crystal X-ray diffraction was used to determine the crystal structure of the reported material. ZnIO(3)(OH) exhibits a laye…
Isolated lithium sites were anchored on mesoporous silica by a molecular precursor approach at room temperature. The resultant materials exhibit ordered mesostructure, high base strength, and more importantly, a molecular-level dispersion of active sites, which are extremely desirable for catalysis and impossible to b…
In this study, tetraphenylthiophene (TP) with aggregation-induced emission enhancement (AIEE) property served as the terminal and central fluorophores of poly(γ-benzyl-L-glutamate) (PBLG)-based polymers of TP1PBLG and TP2PBLG, respectively, to probe the relationship between the secondary structure (α-helix) of polypep…
Graphene oxide (GO) has been layer-by-layer assembled onto silica microspheres to form a GO/SiO(2) composite stationary phase. All the characterizations of GO/SiO(2) by elemental analysis, Raman spectroscopy and Fourier transformed infrared spectrometry confirmed that with the increase of the assembled layer, GO gradu…
High-yield SrTiO3 nanowires (NWs) with accessible mesoporosity were synthesized through a template-free hydrothermal process. The highest surface area of 145 m2 g−1 with the pore volume of 0.43 cm3 g−1 was confirmed when the Ti/Sr molar ratio was fixed at 1 : 1.05 in the precursors. Unlike the previously reported prep…
Complex metal hydrides, containing up to 18 wt% H2, are attractive candidates for on-board hydrogen storage. However, only limited reversibility of H2 desorption is achieved under mild conditions, especially in the absence of catalysts. Nanoconfining the materials in porous matrixes facilitates rehydrogenation, but st…
Luminescent CdS nanocrystals embedded in a polystyrene matrix were successfully prepared. The in situ growth of CdS QDs was realized by thermal treatment of Cd bis(thiolate)/polymer foil at different times and temperatures (240 ° C and 300 ° C) of annealing, in order to evaluate their influence on the quantum dots gro…
Abstract The increasing importance of nanotechnology in the field of biomedical applications has encouraged the development of new nanomaterials endowed with multiple functions. Novel nanoscale drug delivery systems with diagnostic, imaging and therapeutic properties hold many promises for the treatment of different t…
Plate-like CeO2 particles were successfully synthesized by calcination of Ce2(CO3)3·8H2O single plate crystals at 400 °C. In comparison with commercial CeO2 nanoparticles, the homogeneous plate-like CeO2 particles showed lower photocatalytic and oxidation catalytic activity, higher slipping characteristic (comfort of…
Surface-relief diffraction gratings of various geometries were fabricated from the molecular spin crossover complex [FeII(hptrz)3](OTs)2 using the soft lithographic method described in Part 1 of this paper [Quintero et al., J. Mater. Chem., DOI: 10.1039/c2jm15662h]. The grating geometry and optical properties were obt…
In this paper, we consider the one-dimensional Cahn--Hilliard equation perturbed by additive noise and study the dynamics of interfaces for the stochastic model. The noise is smooth in space and defined as a Fourier series with independent Brownian motions in time. Motivated by the work of Bates and Xun on slow manifo…
By combining benzotriazole and quinoxaline units in an acceptor unit, three novel monomers, 2-dodecyl-6,7-diphenyl-4,9-di(thiophen-2-yl)-2H-[1,2,3]triazolo[4,5-g]quinoxaline (M1), 2-dodecyl-4,6,7,9-tetra(thiophen-2-yl)-2H-[1,2,3]triazolo[4,5-g]quinoxaline (M2) and 6,7-bis(4-tert-butylphenyl)-2-dodecyl-4,9-di(thiophen-…