Materials Literature
按标题、摘要、年份、主题和来源检索公开元数据。结果保留作者、摘要、分类与原始来源链接。
Carboxylic acid terminated poly(aryl ether) dendrimers were used as microreactors to conduct the photooxidation of trans-stilbene and trans,trans-1,4-diphenyl-1,3-butadiene (DPB) sensitized by 9,10-dicyanoanthracene (DCA) in aqueous media. The photooxidation pathways can be successfully controlled by encapsulating the…
Using glycerol (H₃gly) as a primary ligand, the decanuclear aggregate [Mn(II)₂Mn(III)₂Dy₆(μ₃-OH)₂(Hgly)₄(H₂gly)₂-(PhCO₂)₁₆(H₂O)₂]·10CH₃CN (1) has been synthesised; it has a structure built up from two Mn₂Dy₂ heterocubane units linked through a central Dy₂(μ-benzoate)₄ paddle-wheel dimer and shows slow relaxation of it…
We propose a new strategy for fabrication of a phase-separated bicontinuous system composed of low-molecular donor and acceptor that is built up through coordination-based orientation of pyridylated fullerene on a π-conjugated zinc-porphyrin J-type assembly. This complex system exhibits extremely efficient and switcha…
A sulfobetaine copolymer (1) carrying a photochromic spiropyran residue was synthesized, which reversibly isomerized between the closed and open forms in pure water and in saline by irradiation with visible light. The thermodynamic stability of the open form of the spiropyran methacrylate (SPMA) units of compound 1 wa…
A strategy for preparing high relaxivity, metabolically stable peptide-based MR contrast agents is described.
The synthesis and photodynamics in the absence and in the presence of Mg(2+) ions of a novel TNF-C(60)-SiPc-C(60)-TNF pentad are reported. The redox gradient approach allows to obtain a long-lived CS state of 160 ns and 200 micros in the absence and in the presence of Mg(2+) ions, respectively.
Highly transparent conducting ZnO:Al thin films have been produced by the spray pyrolysis technique on glass substrates at a substrate temperature T s =450 °C by a home-made spraying system. The electrical and optical properties of the films were investigated at room temperature before and after annealing in nitrogen…
A single-step method to coat and bifunctionalize water-reduced gold nanoparticles (NPs) with two distinct reactive groups is reported. The coating is based on a peptide that bonds to the NPs surface by its N-cysteine amino acid, terminates with a C-terminal lysine, and stabilizes the colloids, thanks to the surface or…
In the present work, we have developed a novel method for in situ controllable preparation of gold nanorods (GNRs) within the thermo-responsive P(NIPAM-NVP) hydrogel networks by regulating the rates of the reduction and the mass transfer. When the pH value of the medium is gradually decreased, the reduction rate of go…
We present the simple designs of metamaterial absorbers which are composed of a periodic array of copper annular (or circular) patches, FR4 substrate, and copper film. With appropriate geometrical parameters, these metamaterials can provide the electric and magnetic resonances overlapping in the given frequency range,…
A sandwich-type anionic cluster of a new lacunary building block [P(2)W(13)O(51)](14-) has been prepared: [H(6){P(2)W(13)O(51)}(2)Sb(4)](10-) (1) was synthesized in a one-pot self-assembly reaction of [H(2)P(2)W(12)O(48)](12-) with C(4)H(4)KO(7)Sb.0.5H(2)O and characterized by single-crystal X-ray analysis, IR, thermo…
The time evolution of electronically excited heme (iron II protoporphyrin IX, [Fe(II) PP]) and its associated salt hemin (iron III protoporphyrin IX chloride, [Fe(III) PP-Cl]), has been investigated for the first time in the gas phase by femtosecond pump-probe spectroscopy. The porphyrins were excited at 400 nm in the…
In this tutorial paper we will give a brief introduction of phase field method as a mathematical tool for describing interfaces and their motion. This method was originally developed as a model of solidification, which enabled us to simulate complicated structures like dendritic crystals easily. The principle of this…
An alkaline-earth silicate (Sr–Ca–Y–B–Si) sealing glass with varying K 2 O content ( 2 – 5 mol % ) was developed and evaluated for solid oxide fuel cell (SOFC) sealing applications. Two metallic interconnect plates were sealed with the glass and tested for electrical stability in a dual environment at elevated tempera…
In order to remove the incommensurate cycloid spin coupling in BiFeO 3 that inhibits this multiferroic compound of showing magnetoelectric effect, we doped this perovskite on Bi site with rare-earth ions (La, Gd), showing that the antiferromagnetic ordering with space modulated coupling of spins is broken. A correlati…
Uniform CoTe and CoTe2 nanotubes could be successfully synthesized via a facile hydrothermal co-reduction route based on the precipitate slow-release controlled process.
Carbon nanotube (CNT)/Ag nanocomposites were synthesized by an ultrasonic process. Dispersion of aggregated CNTs and synthesis of both Ag nanoparticles and Ag/CNT composite particles were executed by ultrasonic treatment. Dispersibility of Ag nanoparticles improved with the combined use of a dispersant, which led to i…
Reaction of the polymeric alkynyl complexes (AuC(2)C(6)H(4)R)(n) (R = 4-NH(2) and 3-NH(2)) with the diphosphine PPh(2)C(6)H(4)PPh(2) in the presence of Cu(+) ions gave two novel heterometallic aggregates [{Au(3)Cu(2)(C(2)C(6)H(4)R)(6)}Au(3)(PPh(2)C(6)H(4)PPh(2))(3)](PF(6))(2) (R = 4-NH(2) (2), 3-NH(2) (3)). The compou…
The dynamics of GATG glycodendrimers have been investigated by NMR translational diffusion and quantitative (13)C relaxation studies (Lipari-Szabo model-free), allowing the determination of the correlation times describing the dendrimer segmental orientational mobility.
Polystyrene grafted with acrylonitrile using gamma-irradiation technique was successfully synthesized. This process was carried out at various gamma dose (0.2-1.5 Mrad). The new grafted polymer was characterized and its properties were investigated. The results indicate that best grafting percentage ratio could be rev…