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。
Engineering crystal properties by a choice of adequate molecular building blocks has to cope with the fact that a given molecule can be isolated in many, at times very many, solid forms (single entity crystals, solvates, salts, co-crystals and their polymorphs) each with its own characteristics and properties. Prepara…
Nanostructured Ni–Al layered double hydroxide/carbon nanotube (LDH/CNT) composites, where LDH nanocrystallites could highly disperse on the surface of CNTs matrix through the interfacial electrostatic interaction between the positively-charged layers of LDH and the negatively-charged functional groups of modified CNTs…
Molecular gelators are currently receiving a great deal of attention. These are small molecules which, under the appropriate conditions, assemble in solution to, in the majority of cases, give long fibrillar structures which entangle to form a three-dimensional network. This immobilises the solvent, resulting in a gel…
We report a facile approach to synthesize narrow and long graphene nanoribbons (GNRs) by sonochemically cutting chemically derived graphene sheets (GSs). The yield of GNRs can reach ∼5 wt% of the starting GSs. The resulting GNRs are several micrometers in length, with ∼75% being single-layer, and ∼40% being narrower t…
Cofacial J type nano aggregates, which are both fluorescent and triplet state photoactive, were formed in chloroform via multiple O → Zn2+ coordination bonds between molecules of ZnPc(α-OPh)4, i.e. tetra(α-phenoxy) zinc phthalocyanine. Non photoactive H aggregates, on the other hand, were observed in DMF–water mixture…
Graphene, an atomically thin layer of sp(2) hybridized carbon, has emerged as a promising new nanomaterial for a variety of exciting applications including chemical sensors and catalyst supports. In this article, we survey modern methods of graphene production and functionalization with an emphasis on the development…
Natural fibers are widely used as plastic composite material reinforcements. In this work, composites of postconsumer high-density polyethylene (HDPE) reinforced with sisal fibers were prepared. PE and sisal fibers were chemically modified to improve their compatibilities, try to increase the hydrophobic character of…
The photoluminescence intensity of ZnS-AgInS(2) solid solution nanoparticles was remarkably enhanced by increasing the heating temperature to 180 degrees C, above which the emission was simply diminished, while ZnS coating of the particles resulted in further enhancement of PL intensity, giving the highest quantum yie…
Photoluminescent ZnO nanoparticles, due to nontoxicity and cheapness, are promising materials applied in UV laser devices and biological labels. ZnO photoluminescence is usually composed of two parts: UV emission arising from the typical band gap transition and visible emission due to the oxygen vacancies. In order to…
Three new Cu-Ln cage complexes bridged by phosphonates and acetates are reported; one--a Cu(24)Dy(8) cage--is a new single molecule magnet (SMM).
Carbon nanotubes, carbon nanocones, and graphene nanoribbons are carbon-based nanomaterials, and their electronic and field emission properties can be altered by either electron donors or electron acceptors. Among both donors and accepters, nitrogen and boron atoms are typical substitutional dopants for carbon materia…
This review reports some recent advances on the synthesis, self-assembly, and biofunctionalization of various dendrimer-based organic/inorganic hybrid nanoparticles (NPs) for various biomedical applications, including but not limited to protein immobilization, gene delivery, and molecular diagnosis. In particular, tar…
The decomposition of the cubic perovskite-type oxide Ba(x)Sr(1-x)Co(0.8)Fe(0.2)O(3-delta) (BSCF) into hexagonal and cubic perovskite-type phases has been examined by means of Scanning Electron Microscopy (SEM), Transmission Electron Microscopy (TEM), Selected Area Electron Diffraction (SAED) and X-Ray Diffraction (XRD…
This review discusses liquid crystal phase formation by biopolymers in solution. Lyotropic mesophases have been observed for several classes of biopolymer including DNA, peptides, polymer/peptide conjugates, glycopolymers and proteoglycans. Nematic or chiral nematic (cholesteric) phases are the most commonly observed…
A super-hydrophobic array of grooves containing trapped gas (stripes) has the potential to greatly reduce drag and enhance mixing phenomena in microfluidic devices. Recent work has focused on idealized cases of stick-perfect slip stripes. Here, we analyse the experimentally more relevant situation of a pressure-driven…
A new kind of magnetic/luminescent multifunctional nanoparticles was synthesized by covalently linking multiple carboxyl-functionalized superparamagnetic Fe(3)O(4) nanoparticles and individual amino-functionalized silica-coated fluorescent NaYF(4) : Yb,Er up-conversion nanoparticles (UCNPs). The resultant nanocomposit…
The recent trends in the synthesis of functional poly(ester)s by ring-opening polymerization (ROP) are reviewed. While the use of ROP processes for the synthesis of poly(lactide), poly(lactide-co-glycolide) and several poly(lactone)s has been well studied, the paucity of functional groups available for further reactio…
Amino‐modified double wall carbon nanotube (DWCNT‐NH 2 )/carbon fiber (CF)/epoxy hybrid micro‐nanocomposite laminates were prepared by a resin infusion technique. DWCNT‐NH 2 /epoxy nanocomposites and carbon fiber/epoxy microcomposites were made for comparison. Morphological analysis of the hybrid composites was perfor…
We present in this review article an overview of the capabilities of surface enhanced Raman scattering (SERS) spectroscopy as a technique for applications related to environmental analysis and monitoring, ranging from the structural characterization of soils, through ultrasensitive detection of pollutants and heavy me…
A new method for the preparation of graphene has been developed via porphyrin exfoliation of graphite in NMP. The exfoliation, which follows the intercalation of organic ammonium ions, is based on the pi-pi interaction between graphene and porphyrins. The graphene sheets prepared by this method show undisturbed sp(2)…