Materials Literature
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In recent years, thiolate-protected gold nanoclusters (or thiolated Au NCs) with a core size below 2 nm have emerged as a new class of multifunctional nanoparticles because of their unique molecular-like properties and the potential to use these properties in many practical applications. A general synthesis of Au NCs…
The metastable semiconductor phase allows for the exploration of unusual properties and functionalities of abnormal structures, although it is often difficult to prevent thermodynamic transformations to lower energy structures from higher, unfavored energy states. Here, we show for the first time the preparation of hi…
Research on VO 2 cathodes for lithium ion batteries has been mainly focused on the VO 2 (B) phase. However, rutile VO 2 (M/R) has rarely been studied because of the intrinsically low lithium activity resulting from the highly anisotropic nature of lithium accommodation. Here, we demonstrate that heteroepitaxial engine…
This brief presents a compact subthreshold model for short-channel monolayer transition metal dichalcogenide (TMD) field-effect transistors. In this model, the impact of fringe fields from the high-K gate dielectric is considered and incorporated into a new characteristic-length expression using a single model paramet…
Primary alcohols have been an active area of research since the beginning of the 20th century. The main problem in studying monohydroxy alcohols is the molecular origin of the slower Debye relaxation, whereas the faster process, recognized as structural relaxation, remains much less investigated. This is because in ma…
The optical properties of dyes dissolved in liquid crystals have led to their proposed use in a diverse range of practical applications. Such guest–host systems are typically required to fulfil a range of criteria relating to their absorption properties, degree of alignment and stability, but concurrently satisfying t…
The polarization memory (PM) effect in the photoluminescence (PL) of the porous nc-Si-SiOx light-emitting structures, containing nanoparticles of silicon (nc-Si) in the oxide matrix and passivated in a solution of hydrofluoric acid (HF), has been investigated. The studied nc-Si-SiOx structures were produced by evapora…
The major barrier for optical quantum information technologies is the absence of reliable single photons sources providing non-classical light states on demand which can be easily and reliably integrated with standard processing protocols for quantum device fabrication. New methods of generation at room temperature of…
Bi0.5Na0.5TiO3-BaTiO3(BNT-BT)-based ternary solid solutions were investigated for high-temperature capacitor applications. Through a comprehensive investigation of the (1 - x)(0.92Bi0.5Na0.5TiO3-0.08BaTiO3)-x NaNbO3[(1 - x)(BNT-BT)- xNN, x = 0-0.45] system, 0.85(BNT-BT)-0.15NN was selected as the parent matrix due to…
Nowadays, the assembling of metallophthalocyanines into well-structured thin films via wet-processing techniques is a topic of active research. This process is addressed in the present study devoted to Langmuir–Schaeffer (LS) films of copper tetra-( tert -butyl)-phthalocyanine. The LS films were prepared by using o -x…
This paper demonstrates charge order is important in dimerized $\ensuremath{\beta}$- and $\ensuremath{\kappa}$-phase organic conductors similar to the uniform $\ensuremath{\theta}$- and $\ensuremath{\alpha}$-phase conductors. Here the magnitude of the dimerization represents the deviation from the ideal triangular lat…
Abstract A flexible solid‐state supercapacitor is prepared from carbon nanotube (CNT)‐based buckypaper after forming a thin layer of polyethylenedioxythiophene (PEDOT) on the surface of the CNTs in the paper. A highly conducting PEDOT phase is obtained by interfacial polymerization, in which polymerization is confined…
Abstract Nanoparticles covered with ligand shells comprising both positively and negatively charged ligands exhibit Gram‐selective antibacterial action controlled by a single experimental parameter, namely the proportion of [+] and [−] ligands tethered onto these particles. Gram selectivity is attributed to the interp…
Detection of carbon dioxide (CO2) is of fundamental importance in diverse applications ranging from environmental analysis to agricultural production. In this work, a hybrid probe based on guanidinium-pendent oligofluorene (G-OF) and water-soluble conjugated polythiophene (PTP) has been developed for the turn on detec…
X-ray photoelectron spectroscopy reveals spontaneous atom diffusion from a Mo(001) support into a MgO thin film doped with transition-metal ions. The amount of interfacial mixing depends on the nature of the dopants and is considerably larger for Fe than for Cr impurities. DFT calculations find the reason for Mo diffu…
Plasmonic nanogaps serve as a useful configuration for light concentration and local field amplification owing to the extreme localization of surface plasmons. Here, a smart plasmonic nanogap device is fabricated by the dynamic response of an Ag decorated hierarchically structural vertical polymer nanorod array under…
The simultaneously oleophobic/hydrophilic coatings are highly desirable in antifogging, oil-water separation, and detergent-free cleaning. However, such coatings require special chemical structure, i.e., perfluorinated backbone and polar end-groups, and are too expensive for real-life application. Here, we have develo…
ABSTRACT Renewable resource‐based polyesters, poly(trimethylene malonate) (PTM) and poly(trimethylene itaconate) (PTI), were synthesized from 1,3‐propanediol, malonic acid, and itaconic acid via melt polycondensation using green chemistry principles. Aluminum chloride, a Lewis acid, was used as the catalyst at differe…
d -Glucaric acid (GA), an aldaric acid isolated from various vegetables and fruits, is an important biobased building block. Glucaric acid acetate (GAA), which is acyclic, was synthesized in an acetic anhydride/sulfuric acid mixture. GAA was converted to glucaric acid chloride acetate (GACA) and then polymerized with…
Novel stable carboxylic acid derivatized alkoxy silanes are co-condensed with tetraethyl orthosilicate in the presence of a structure-directing agent in a direct “one-pot” synthesis to porous carboxy-modified silica particles. Special emphasis is given to the influence of an increasing amount of 5-(triethoxysilyl)pent…