Materials Literature
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Carbon-based Lewis acids are limited merely to trityl cations and some electron-poor allenes. [1] Recently, Bazan and coworkers reported that C60 and C70 can behave as all-carbon Lewis acids to form the corresponding Lewis acid–base pairs with a normal NHC structure. [2] This work opens a new perspective on the resear…
Electrochemically active hybrid materials are an emerging class of materials for both small and large-scale electrochemical energy storage applications. The possibility of nanoscale engineering inorganic and organic components in a unique hybrid material provides new and sometimes exceptional sets of properties, which…
Oxygen nonstoichiometric oxides are important materials in technologies such as fuel cells, permeation membranes, and solar-driven thermochemical fuel production owing to their reversible redox characteristics. The material kinetic properties of the oxides, the surface reaction rate constant at the solid/gas interface…
The rechargeable nonaqueous Li-O2 battery holds promise to a perfect substitutes for lithium-ion battery for the theoretically high specific energy density (∼3505 Wh·kg-1). 1However, the great challenges facing the Li-O2 battery is still left so far. One of which is a huge energy loss for achieving a reversible Li-O2…
Graphene field effect transistors (FETs) are attractive candidates for sensing applications because of their high charge carrier mobility and the ideal coupling between graphene charge carriers and surface potential. However, depositing a selective layer on the graphene for these sensing applications can degrade graph…
The electrochemical deposition of various nanowires is well described in recent scientific publications and focus of the research of a significant number of research groups worldwide. Deposited on a micro/nano porpous aluminum substrate on top of a silicon wafer the level of filling of the pores with the electrodeposi…
Semiconducting single-walled carbon nanotubes (SWNTs) show near infrared photoluminescence (NIR PL) based on the Van Hove singularity in the one-dimensional structures. Recently, PL enhancement with wavelength shifts of the SWNTs has been reported through a very limited amount of chemical modification by oxygen atom d…
Demand of electrical energy storages is increasing quickly with market expansion of cell phones, electrical vehicles, and stationary energy storage. Supercapacitor is an alternative choice of rechargeable batteries because of their low cost for fabrication and maintenance, high cycle life, high charge rate, and high s…
A Fe2C nanocrystals encapsulated into a nitrogen and sulfur dual doped carbon matrix (Fe2C@C) was first synthesized by a simultaneous polymerization-precipitation technique followed with a high temperature pyrolysis process. This method can lead to an effective and homogenous distribution of core/shell Fe2C nanopartic…
Vanadium(V) oxide (V2O5) has attracted attention mainly due to its use in lithium secondary batteries. Consequently, various studies of its lithiated phases were made, leading to their identification as α, ε, δ, γ [1]. When prepared in the form of thin films V2O5 can be applied in a battery-type electrochromic (EC) de…
The preparation of chiral metal complexes and, specifically, chiral at metal complexes, is a highly sought after goal in current organometallic chemistry due to its relevance in enantioselective metal-mediated processes.1. Despite the wealth of metal-fullererene hybrids reported to date, only a few are optically activ…
Carbon-based nanomaterials are a promising class of electrodes for electrochemical double layer capacitors, due to their high accessible surface area, high electrical conductivity, and tunability through functionalization. A series of recent studies have shown that chemically and mechanically modified graphene electro…
Specific and tunable modification to the optical properties of single-wall carbon nanotubes is demonstrated through the direct encapsulation into the nanotube interior of guest molecules with measured static dielectric constants. Optical measurements on SWCNT populations containing over thirty distinct simple compound…
Photochemical conversion to high-yield and log-lived triplet excited states of organic molecules is an interesting research content. For example, three-dimensional self-assembled monolayers (SAMs) of organic dyes on metal nanoparticles (MNP) are highly promising as photofunctional nanomaterials. A major research topic…
Metal capsules for inertial confinement fusion (ICF) experiments are currently produced using micromachining (MM) or physical vapor deposition (PVD). These time and labor intensive methods have failed to yield capsules that meet the exacting standards for smoothness, purity, thickness uniformity and shape required by…
Presented here are preliminary experiments facilitating the use of the cellulose-extruding bacteria Gluconoacetobacter xylinus as a sustainable tool for the production of carbon fibers. G. xylinus has the natural ability to convert different kinds of sugars from its environment into highly crystalline cellulose nanofi…
The operation of proton exchange fuel cells (PEMFCs) is bottlenecked by the sluggishness of the oxygen reduction reaction (ORR) [1]. Accordingly, the development of advanced electrocatalysts (ECs) capable to promote the ORR kinetics is one of the main goals of the research. It is further highlighted that, as of today,…
Efficient synthesis of the ordered nanostructures of semiconductors is important issue to be solved for the preparation of the photo-energy conversion systems with high efficiency [1]. For the effective preparation of the ordered nanostructures of semiconductors, the use of the naturally occurring ordered nanomaterial…
One of the major drawbacks of renewable energy production is that efficient energy storage is required, due to the intermittent nature of wind and solar power. The EU funded Project “ZAS – Zinc Air Secondary batteries based on innovative nanotechnology for efficient energy storage” has the goal to overcome this drawba…
We will report on an investigation of exciton and trion dynamics in chemically- or electrochemically-doped semiconducting single-wall carbon nanotubes using VIS and NIR femtosecond time-resolved pump-probe spectroscopy.