Polypyrrole derivatives for electrochromic applications
This review provides a comprehensive assessment of recent progress in polypyrrole derivatives which are specially designed for electrochromic applications.
Materials Literature
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Highly selective and efficient heavy metal capture with polysulfide intercalated layered double hydroxides
Intercalation of polysulfides into LDHs forms layered composites that can separate Hg 2+ , Ag + and Cu 2+ from mixed ions with high selectivity and capacity.
High throughput electron transfer from carbon dots to chloroplast: a rationale of enhanced photosynthesis
A biocompatible amine functionalized fluorescent carbon dots were developed and isolated for gram scale applications. Such carbogenic quantum dots can strongly conjugate over the surface of the chloroplast and due to that strong interaction the former can easily transfer electrons towards the latter by assistance of a…
Aggregation induced blue-shifted emission – the molecular picture from a QM/MM study
In general, optical emission in the solid-state is red-shifted with respect to the solution phase. A series of recently synthesized compounds exhibits aggregation induced blue-shifted emission (AIBSE) phenomena. By employing a polarizable continuum model (PCM) and a hybrid quantum mechanics/molecular mechanics (QM/MM)…
Sound and Vibration Damping Properties of Flax Fiber Reinforced Composites
In recent days, automobile and construction industries are focus on the light weight, environmental friendly materials with good mechanical properties. Glass fiber reinforced composites have excellent specific properties and are widely used because of reduced mass. However the manufacturing of glass fibers and end of…
Ligands effects on the magnetic anisotropy of tetrahedral cobalt complexes
The effect of ligands with heavy donor atoms on the magnetic anisotropy of the pseudo-tetrahedral cobalt complexes, Co(quinoline)2I2 (1) and Co(EPh3)2I2 (2-3) (E = P, As) has been investigated. The axial zero-field splitting parameter D was found to vary from +9.2 cm(-1) in 1 to -36.9 cm(-1) in 2 and -74.7 cm(-1) in 3…
Photolithographic fabrication of high-performance all-solid-state graphene-based planar micro-supercapacitors with different interdigital fingers
Here we demonstrated the fabrication of ultrahigh rate, all-solid-state, planar interdigital graphene-based micro-supercapacitors (MSCs) manufactured by methane plasma-assisted reduction and photolithographic micro-fabrication of graphene oxide films on silicon wafers. Notably, the electrochemical performance of MSCs…
Self-assembly of colloidal one-dimensional nanocrystals
The ability of nanoscopic materials to self-organize into large-scale assembly structures that exhibit unique collective properties has opened up new and exciting opportunities in the field of nanotechnology. Although earlier work on nanoscale self-assembly has focused on colloidal spherical nanocrystals as building b…
Optical absorption and scattering spectroscopies of single nano-objects
Developments of optical detection and spectroscopy methods for single nano-objects are key advances for applications and fundamental understanding of the novel properties exhibited by nanosize systems. These methods are reviewed, focusing on far-field optical approaches based on light absorption and elastic scattering…
A type-II semiconductor (ZnO/CuS heterostructure) for visible light photocatalysis
Formation of ZnO/CuS heterostructure through a simple wet-chemical method leads to a type-II semiconductor. The heterojunction between these two moieties leads to the separation of electron–hole pairs, which further enhances the photocatalytic efficiency of ZnO.
A triphenylamine-based benzoxazole derivative as a high-contrast piezofluorochromic material induced by protonation
A triphenylamine-based benzoxazole derivative ( BVDP ) as a typical D–π–A molecule could be used as a low contrast piezofluorochromic material with a spectral red-shift of 29 nm. However, when BVDP bound a proton to form BVDP+H , a high contrast piezofluorochromism (Δ λ = 75 nm) could be observed.
Efficient CO2 capture by a task-specific porous organic polymer bifunctionalized with carbazole and triazine groups
A porous triazine and carbazole bifunctionalized task-specific polymer has been synthesized via a facile Friedel-Crafts reaction. The resultant porous framework exhibits excellent CO2 uptake (18.0 wt%, 273 K and 1 bar) and good adsorption selectivity for CO2 over N2.
Active Packaging in Food Industry: A Review
In response to the dynamic changes in current consumer demand and market trends, the area of Active Packaging is becoming increasingly significant. Unlike traditional packaging, which must be totally inert, active packaging is designed to interact with the contents and/or the surrounding environment. Active packaging…
Two-dimensional heterostructures of V 2 O 5 and reduced graphene oxide as electrodes for high energy density asymmetric supercapacitors
The 2D layered heterostructures of V 2 O 5 nanosheets and reduced graphene oxide show high conductivity and superior asymmetric supercapacitor properties.
Role of oxygen vacancy and Fe–O–Fe bond angle in compositional, magnetic, and dielectric relaxation on Eu-substituted BiFeO 3 nanoparticles
The influence of oxygen vacancies on the dielectric relaxation behavior of pure and Eu-substituted BiFeO3 nanoparticles synthesized by a sol-gel technique has been studied using impedance spectroscopy in the temperature range of 90 °C to 180 °C. The electric relaxation time and activation energy of the oxygen vacancie…
ZnCo 2 O 4 nanowire arrays grown on nickel foam for high-performance pseudocapacitors
ZnCo 2 O 4 nanowire arrays on nickel foam were synthesized through a hydrothermal and subsequent annealing process for high-performance supercapacitor electrodes.
Superior supercapacitive performance in electrospun copper oxide nanowire electrodes
Electrospun CuO nanowires from an aqueous polymeric solution gave the highest specific capacitance so far achieved in this material when tested as a supercapacitor electrode.
Redox-active electrolyte for supercapacitor application
This paper reports the electrochemical behaviour of supercapacitor carbon electrodes operating in different aqueous solutions modified by various redox-active species (hydroxybenzenes, bromine derivatives and iodide). Three dihydroxybenzenes with varying stereochemistry, i.e., -OH substitution, have been considered as…
Mechanosynthesis of imine, β-ketoenamine, and hydrogen-bonded imine-linked covalent organic frameworks using liquid-assisted grinding
A variety of aromatic amines/hydrazides and aldehydes have been utilized for the construction of crystalline COFs at a faster rate and in high yield, irrespective of their reactivity and solubility using the Liquid-Assisted Grinding (LAG) method.
Photoluminescence phenomena prevailing in c-axis oriented intrinsic ZnO thin films prepared by RF magnetron sputtering
The substantial amount of –OH groups attached to the Zn lattice has been correlated to the dominant c -axis orientation of the hexagonal ZnO crystals with wurtzite structure, which demonstrates two preferred first-order Raman peaks and also exhibits a distinct UV luminescence band due to the typical exciton emission o…