Fuel cell electric vehicles and hydrogen infrastructure: status 2012
A graphical abstract is available for this content
Materials Literature
文献浏览
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。
What makes efficient circularly polarised luminescence in the condensed phase: aggregation-induced circular dichroism and light emission
In this contribution, we conceptually present a new avenue to construction of molecular functional materials with high performance of circularly polarised luminescence (CPL) in the condensed phase. A molecule (1) containing luminogenic silole and chiral sugar moieties was synthesized and thoroughly characterized. In a…
Polymeric multilayer capsules for drug delivery
The advent of Layer-by-Layer (LbL) assembly to fabricate polymeric as well as hybrid multilayer thin films has opened exciting avenues for the design of multifunctional drug carriers with extreme control over their physico-chemical properties. These polymeric multilayer capsules (PMLC) are typically fabricated by sequ…
Amino acids as the source for producing carbon nanodots: microwave assisted one-step synthesis, intrinsic photoluminescence property and intense chemiluminescence enhancement
In this communication, we report a general strategy for the production of carbon nanodots (CDs) by microwave irradiation of amino acids in the presence of acid or alkali. The resultant CDs exhibit strong photoluminescence and intense chemiluminescence enhancement of the NaIO(4)-H(2)O(2) system.
Advanced supramolecular polymers constructed by orthogonal self-assembly
Large aggregates, constructed by linking together monomer building blocks via non-covalent interactions with polymer properties, are regarded as supramolecular polymers. Many kinds of non-covalent interactions, such as metal-ligand coordination, hydrogen bonding, π-π stacking, ionic interaction, and host-guest interac…
Neodymium(iii) doped fluoride nanoparticles as non-contact optical temperature sensors
We report that non-contact optical temperature sensing can be achieved with the use of heavily Nd(3+) doped NaYF(4) nanoparticles. The temperature evaluation can be realized either by monitoring the absolute luminescence intensity or by measuring the intensity ratio of the two Stark components of the (4)F(3/2) multipl…
Recent developments in superhydrophobic surfaces with unique structural and functional properties
The surface wettability control of solid materials has been considered as an essential aspect of surface chemistry. In the past decade, superhydrophobic surfaces have revealed a cornucopia of novel structural and functional properties, exhibiting considerable importance in both fundamental research and practical appli…
Flexible and conductive nanocomposite electrode based on graphene sheets and cotton cloth for supercapacitor
There is currently a strong demand for energy storage devices which are cheap, light weight, flexible, and possess high power and energy densities to meet the various requirements of modern gadgets. Herein, we prepare a flexible and easily processed electrode via a simple “brush-coating and drying” process using every…
Phase behaviour and complex coacervation of aqueous polypeptide solutions
Mixing of oppositely charged polyelectrolytes in aqueous solutions may result in the formation of polyelectrolyte complexes (PEC). Phase separation and complex coacervation of polypeptides are investigated in this study. Polypeptides have identical backbones and differ only in their charged side groups, making them at…
One-pot synthesis of N-doped carbon dots with tunable luminescence properties
N-Doped carbon dots synthesized by a one-pot solvothermal route displayed tunable luminescence due to different N contents. They could be directly applied in the imaging of peritoneal macrophages of mice. This study provides a new method to tune the luminescence of carbon-based materials through non-metal doping.
The toxic effect of silver ions and silver nanoparticles towards bacteria and human cells occurs in the same concentration range
Silver is commonly used both in ionic form and in nanoparticulate form as a bactericidal agent. This is generally ascribed to a higher toxicity towards prokaryotic cells than towards mammalian cells. Comparative studies with both silver ions (such as silver acetate) and polyvinylpyrrolidone (PVP)-stabilized silver nan…
A Non-Aqueous Asymmetric Cell with a Ti2C-Based Two-Dimensional Negative Electrode
A new MXene phase, Ti 2 C, obtained by aluminum extraction from Ti 2 AlC and exfoliation of the reaction product, was electrochemically studied vs. Lithium. Li-ions insertion into the 2-D structure was characterized by in situ XRD measurements. Additional electrochemical kinetic characterizations of Ti 2 C, using a ca…
Gas phase metal cluster model systems for heterogeneous catalysis
Since the advent of intense cluster sources, physical and chemical properties of isolated metal clusters are an active field of research. In particular, gas phase metal clusters represent ideal model systems to gain molecular level insight into the energetics and kinetics of metal-mediated catalytic reactions. Here we…
The Biocompatibility of Nanodiamonds and Their Application in Drug Delivery Systems
Nanodiamonds (NDs), as a new member of the carbon nanoparticles family, have attracted more and more attention in biomedicine recently due to their excellent physical and chemical properties. This paper summarizes the main results from the in vitro and in vivo safety assessments of NDs and reports the application of N…
A Symmetric RuO2∕RuO2 Supercapacitor Operating at 1.6 V by Using a Neutral Aqueous Electrolyte
A novel symmetric RuO 2 /RuO 2 supercapacitor with a high operating voltage of 1.6 V is built using the nanocrystalline hydrous RuO 2 . The symmetric supercapacitor exhibits an energy density of 18.77 Wh kg −1 at a power density of 500 W kg −1 based on the total mass of active electrode material and excellent cycling…
Second-order Convex Splitting Schemes for Gradient Flows with Ehrlich–Schwoebel Type Energy: Application to Thin Film Epitaxy
We construct unconditionally stable, unconditionally uniquely solvable, and second-order accurate (in time) schemes for gradient flows with energy of the form $\int_\Omega ( F(\nabla\phi({\bf x})) + \frac{\epsilon^2}{2}|\Delta\phi({\bf x})|^2 ) d{\bf x}$. The construction of the schemes involves the appropriate combin…
Artificial enzymes based on supramolecular scaffolds
Enzymes are nanometer-sized molecules with three-dimensional structures created by the folding and self-assembly of polymeric chain-like components through supramolecular interactions. They are capable of performing catalytic functions usually accompanied by a variety of conformational states. The conformational diver…
Lanthanides in molecular magnetism: so fascinating, so challenging
Due to their usual large magnetic moments and large magnetic anisotropy lanthanide ions are investigated for the search of Single Molecule Magnets with high blocking temperature. However, the low symmetry crystal environment, the complexity of the electronic states or the non-collinearity of the magnetic anisotropy ea…
Doping BiFeO3: approaches and enhanced functionality
BiFeO(3) is one of the most studied multiferroic materials. Both its magnetic and ferroelectric properties can be influenced by doping. A large body of work on the doped material has been presented in the past couple of years. In this paper we provide a perspective on general doping concepts and their impact on the ma…
Bioinspired rice leaf and butterfly wing surface structures combining shark skin and lotus effects
Living nature is the inspiration for many innovations and continues to serve as an invaluable resource to solve technical challenges. We find that unique surface characteristics of rice leaves and butterfly wings combine the shark skin (anisotropic flow leading to low drag) and lotus (superhydrophobic and self-cleanin…