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Themed collection 2019 Journal of Materials Chemistry C Most Popular Articles

40 items
Communication

Low-dimensional non-toxic A3Bi2X9 compounds synthesized by a dry mechanochemical route with tunable visible photoluminescence at room temperature

We have synthesized fifteen inorganic and hybrid organic–inorganic non-toxic A3Bi2X9 compounds (A = K+, Rb+, Cs+, CH3NH3+ and HC(NH2)2+; X = I, Br, Cl) through dry mechanochemistry.

Graphical abstract: Low-dimensional non-toxic A3Bi2X9 compounds synthesized by a dry mechanochemical route with tunable visible photoluminescence at room temperature
Communication

Enhanced energy storage properties in sodium bismuth titanate-based ceramics for dielectric capacitor applications

The strategy of turning ferroelectric into relaxor is feasible and effective to boost the energy density and efficiency for sodium bismuth titanate-based bulk ceramics.

Graphical abstract: Enhanced energy storage properties in sodium bismuth titanate-based ceramics for dielectric capacitor applications
Communication

Tunable negative permittivity and magnetic performance of yttrium iron garnet/polypyrrole metacomposites at the RF frequency

Tunable negative permittivity and relaxation-type dispersion for permeability were evidenced in yttrium iron garnet/polypyrrole metacomposites.

Graphical abstract: Tunable negative permittivity and magnetic performance of yttrium iron garnet/polypyrrole metacomposites at the RF frequency
Communication

All-printed, low-cost, tunable sensing range strain sensors based on Ag nanodendrite conductive inks for wearable electronics

Stretchable and wearable strain sensors based on Ag nanodendrites with high stretchability and sensitivity are fabricated by directly screen-printing technology.

Graphical abstract: All-printed, low-cost, tunable sensing range strain sensors based on Ag nanodendrite conductive inks for wearable electronics
Communication

From nanofibers to ordered ZnO/NiO heterojunction arrays for self-powered and transparent UV photodetectors

Ordered ZnO/NiO heterojunction arrays prepared via electrospinning using three-assisted-electrodes were achieved for high-performance self-powered ultraviolet photodetectors.

Graphical abstract: From nanofibers to ordered ZnO/NiO heterojunction arrays for self-powered and transparent UV photodetectors
Paper

Self-doping n-type polymer as a cathode interface layer enables efficient organic solar cells by increasing built-in electric field and boosting interface contact

Self-doped polymer cathode interface materials for organic solar cells have been widely investigated to enhance the ohmic contact between the electrode and the photoactive layer.

Graphical abstract: Self-doping n-type polymer as a cathode interface layer enables efficient organic solar cells by increasing built-in electric field and boosting interface contact
Paper

Prediction of C7N6 and C9N4: stable and strong porous carbon-nitride nanosheets with attractive electronic and optical properties

Three novel porous carbon-nitride nanosheets with C7N6, C9N4 and C10N3 stoichiometries are predicted.

Graphical abstract: Prediction of C7N6 and C9N4: stable and strong porous carbon-nitride nanosheets with attractive electronic and optical properties
Paper

Crystallinity and grain boundary control of TIPS-pentacene in organic thin-film transistors for the ultra-high sensitive detection of NO2

Ultra-sensitive OTFT based NO2 sensors with a limit of detection of 1.93 ppb were realized by controlling and regulating the microstructures of TIPS-pentacene semiconducting films via solvent engineering.

Graphical abstract: Crystallinity and grain boundary control of TIPS-pentacene in organic thin-film transistors for the ultra-high sensitive detection of NO2
Paper

Highly stable kirigami-structured stretchable strain sensors for perdurable wearable electronics

A kirigami-based graphene–polymer hybrid nanocomposite is realized by a laser direct writing technique for reliable skin-inspired strain sensors, presenting almost no performance degradation even after >60 000 stretching cycle tests.

Graphical abstract: Highly stable kirigami-structured stretchable strain sensors for perdurable wearable electronics
Paper

Core@shell structured flower-like Co0.6Fe2.4O4@MoS2 nanocomposites: a strong absorption and broadband electromagnetic wave absorber

Core@shell structured flower-like Co0.6Fe2.4O4@MoS2 nanocomposites and the main possible pathways of microwave absorption, strong absorption ability and broad absorption bandwidth.

Graphical abstract: Core@shell structured flower-like Co0.6Fe2.4O4@MoS2 nanocomposites: a strong absorption and broadband electromagnetic wave absorber
Paper

A thermally stable narrow-band green-emitting phosphor MgAl2O4:Mn2+ for wide color gamut backlight display application

A stable narrow-band green phosphor MgAl2O4:Mn2+ peaking at 525 nm with a full-width at half-maximum of 35 nm and a quantum efficiency of 45% upon 450 nm blue-light excitation is demonstrated, and which has good promising for wide color gamut backlight display.

Graphical abstract: A thermally stable narrow-band green-emitting phosphor MgAl2O4:Mn2+ for wide color gamut backlight display application
Paper

Mesomorphic and electrooptical properties of viologens based on non-symmetric alkyl/polyfluoroalkyl functionalization and on an oxadiazolyl-extended bent core

Non-symmetric alkyl/polyfluoroalkyl viologens with electrochromism in the smectic phase and mesomorphism of bent core oxadiazolyl viologens with hampered electrochromism.

Graphical abstract: Mesomorphic and electrooptical properties of viologens based on non-symmetric alkyl/polyfluoroalkyl functionalization and on an oxadiazolyl-extended bent core
Paper

O-Vacancy-line defective Ti2CO2 nanoribbons: novel magnetism, tunable carrier mobility, and magnetic device behaviors

Detailed first-principles calculations show that the O-vacancy-line (OVL) defects can alter nonmagnetic armchair-edged Ti2CO2 nanoribbons to obtain novel magnetism, flexibly tunable spin-resolved carrier mobility, and high-performance magnetic device behaviors.

Graphical abstract: O-Vacancy-line defective Ti2CO2 nanoribbons: novel magnetism, tunable carrier mobility, and magnetic device behaviors
Paper

Strong thickness-dependent quantum confinement in all-inorganic perovskite Cs2PbI4 with a Ruddlesden–Popper structure

In recent years, two-dimensional (2D) organic–inorganic perovskites have been attracting considerable attention because of their unique performance and enhanced stability for photovoltaic solar cells or photoluminescent devices.

Graphical abstract: Strong thickness-dependent quantum confinement in all-inorganic perovskite Cs2PbI4 with a Ruddlesden–Popper structure
Paper

Constructing fully carbon-based fillers with a hierarchical structure to fabricate highly thermally conductive polyimide nanocomposites

Fully carbon-based f-MWCNT-g-rGO with a hierarchical structure was built to fabricate highly thermally conductive polyimide nanocomposites by electrospinning.

Graphical abstract: Constructing fully carbon-based fillers with a hierarchical structure to fabricate highly thermally conductive polyimide nanocomposites
Paper

Thermally activated delayed fluorescence vs. room temperature phosphorescence by conformation control of organic single molecules

The time-resolved photophysical analysis of a multi-color-changing mechanochromic luminescent compound has been disclosed, which reveals distinct different emission paths to boost TADF and RTP of the emitter depending on its molecular conformations.

Graphical abstract: Thermally activated delayed fluorescence vs. room temperature phosphorescence by conformation control of organic single molecules
Paper

Aero-gel based CeO2 nanoparticles: synthesis, structural properties and detailed humidity sensing response

Mechanism of %RH sensing using aero-gel based CeO2 nanoparticles.

Graphical abstract: Aero-gel based CeO2 nanoparticles: synthesis, structural properties and detailed humidity sensing response
Paper

Efficient ITO-free organic light-emitting devices with dual-functional PSS-rich PEDOT:PSS electrode by enhancing carrier balance

A PSS-rich PEDOT:PSS transparent electrode is proposed to greatly enhance the carrier balance in OLEDs by its hole buffer effect.

Graphical abstract: Efficient ITO-free organic light-emitting devices with dual-functional PSS-rich PEDOT:PSS electrode by enhancing carrier balance
Paper

Amine additive reactions induced by the soft Lewis acidity of Pb2+ in halide perovskites. Part I: evidence for Pb–alkylamide formation

Simple aliphatic amine additives are shown to react with PbI2 in perovskite inks to form amido Pb and alkylammonium species.

Graphical abstract: Amine additive reactions induced by the soft Lewis acidity of Pb2+ in halide perovskites. Part I: evidence for Pb–alkylamide formation
Paper

Three-dimensional acoustic sub-diffraction focusing by coiled metamaterials with strong absorption

The diffraction limit restricts the smallest diameter of a wave's focal spot in a homogeneous medium to no less than half of the operating wavelength.

Graphical abstract: Three-dimensional acoustic sub-diffraction focusing by coiled metamaterials with strong absorption
Paper

Efficient and versatile mechanochromic luminescence of phenanthroimidazolylbenzothiadiazoles: tricolor switching and directional control over the chromism

Red- and blue-shifted mechanochromic luminescence (MCL) and single-particle level observation of tricolor MCL of phenanthroimidazolylbenzothiadiazoles are described.

Graphical abstract: Efficient and versatile mechanochromic luminescence of phenanthroimidazolylbenzothiadiazoles: tricolor switching and directional control over the chromism
Paper

Design for high energy storage density and temperature-insensitive lead-free antiferroelectric ceramics

High energy density was achieved by designing a AgNbO3 based lead-free system.

Graphical abstract: Design for high energy storage density and temperature-insensitive lead-free antiferroelectric ceramics
Paper

Achieving high discharge energy density and efficiency with NBT-based ceramics for application in capacitors

The 0.94(BNT–BST)–0.06KNN ceramic possesses an excellent stored energy storage density (Ws = ∼3.13 J cm−3), a recoverable energy storage density (Wr = ∼2.65 J cm−3), and maintains a relatively high efficiency (η ∼ 84.6%).

Graphical abstract: Achieving high discharge energy density and efficiency with NBT-based ceramics for application in capacitors
Paper

Full visible light emission in Eu2+,Mn2+-doped Ca9LiY0.667(PO4)7 phosphors based on multiple crystal lattice substitution and energy transfer for warm white LEDs with high colour-rendering

Warm white LEDs with high color-rendering were achieved using Ca9LiY0.667(PO4)7:0.03Eu2+,0.10Mn2+ phosphors.

Graphical abstract: Full visible light emission in Eu2+,Mn2+-doped Ca9LiY0.667(PO4)7 phosphors based on multiple crystal lattice substitution and energy transfer for warm white LEDs with high colour-rendering
Paper

Photoluminescence properties and energy transfer in a novel Sr8ZnY(PO4)7:Tb3+,Eu3+ phosphor with high thermal stability and its great potential for application in warm white light emitting diodes

Energy transfer from Tb3+ to Eu3+ was observed and verified in a warm white light emission phosphor SZYP:Tb3+,Eu3+ with high thermal stability.

Graphical abstract: Photoluminescence properties and energy transfer in a novel Sr8ZnY(PO4)7:Tb3+,Eu3+ phosphor with high thermal stability and its great potential for application in warm white light emitting diodes
Paper

Molecular design and synthesis of D–π–A structured porphyrin dyes with various acceptor units for dye-sensitized solar cells

The large efficiency loss for the SGT-023-based device with a stronger electron-withdrawing pyridothiadiazole unit could be ascribed to a fast charge recombination rate caused by the tilted adsorption mode on the TiO2 surface.

Graphical abstract: Molecular design and synthesis of D–π–A structured porphyrin dyes with various acceptor units for dye-sensitized solar cells
Paper

Superior electromagnetic interference shielding 3D graphene nanoplatelets/reduced graphene oxide foam/epoxy nanocomposites with high thermal conductivity

A 3D graphene nanoplatelets/reduced graphene oxide foam/epoxy nanocomposite exhibits superior electromagnetic interference shielding and excellent thermal conductivity.

Graphical abstract: Superior electromagnetic interference shielding 3D graphene nanoplatelets/reduced graphene oxide foam/epoxy nanocomposites with high thermal conductivity
Paper

Eu3+-Activated Sr3ZnTa2O9 single-component white light phosphors: emission intensity enhancement and color rendering improvement

A single-component white phosphor was realized via Eu3+-Doping inside Sr3ZnTaO9(SZT). Eu3+-doping induces structural variations of SZT and its luminescence emission intensity is remarkably enhanced and color rendering is consequently improved.

Graphical abstract: Eu3+-Activated Sr3ZnTa2O9 single-component white light phosphors: emission intensity enhancement and color rendering improvement
Paper

Synergistic effect of graphene oxide@phosphate-intercalated hydrotalcite for improved anti-corrosion and self-healable protection of waterborne epoxy coating in salt environments

Waterborne epoxy coatings (WECs), with significant anti-corrosion and self-healable performance were obtained through electrostatic self-assembly of graphene oxide (GO) and phosphate (PO43−)-intercalated hydrotalcite (PIH).

Graphical abstract: Synergistic effect of graphene oxide@phosphate-intercalated hydrotalcite for improved anti-corrosion and self-healable protection of waterborne epoxy coating in salt environments
Paper

Smart strain sensing organic–inorganic hybrid hydrogels with nano barium ferrite as the cross-linker

Polyacrylic acid hybrid hydrogel with nano barium ferrite as a cross-linker exhibits stable piezoresistive sensing performance with negligible hysteresis loops.

Graphical abstract: Smart strain sensing organic–inorganic hybrid hydrogels with nano barium ferrite as the cross-linker
Paper

Global performance evaluation of solar cells using two models: from charge-transfer and recombination mechanisms to photoelectric properties

IV curves of CA2 and CA3 were drawn using experimental data, a developed normal model and a theoretical normal model.

Graphical abstract: Global performance evaluation of solar cells using two models: from charge-transfer and recombination mechanisms to photoelectric properties
Paper

Significantly enhanced energy storage performance of rare-earth-modified silver niobate lead-free antiferroelectric ceramics via local chemical pressure tailoring

An ultrahigh recoverable energy density was achieved in rare-earth-modified silver niobate lead-free antiferroelectric ceramics via local chemical pressure tailoring.

Graphical abstract: Significantly enhanced energy storage performance of rare-earth-modified silver niobate lead-free antiferroelectric ceramics via local chemical pressure tailoring
Paper

Investigations of electronic and nonlinear optical properties of single alkali metal adsorbed graphene, graphyne and graphdiyne systems by first-principles calculations

Novel carbon-based nonlinear optical (NLO) materials were designed by doping single alkali metal atoms into the surface of graphdiyne (GDY), rather than graphene and graphyne, because AM@GDY (AM = Li, Na, K) possesses an exceptionally high first hyperpolarizability (βtot), especially in the case of K@GDY.

Graphical abstract: Investigations of electronic and nonlinear optical properties of single alkali metal adsorbed graphene, graphyne and graphdiyne systems by first-principles calculations
Paper

A bio-inspired electronic synapse using solution processable organic small molecule

A trap-mediated solution-processed small molecule based artificial synaptic device is presented. This work reveals great potential for a small molecule based artificial synapse to serve in neuromorphic computing.

Graphical abstract: A bio-inspired electronic synapse using solution processable organic small molecule
Paper

Ultrathin high-performance electromagnetic wave absorbers with facilely fabricated hierarchical porous Co/C crabapples

The lab-synthesized hierarchical porous Co/C crabapples demonstrated enhanced electromagnetic wave absorption.

Graphical abstract: Ultrathin high-performance electromagnetic wave absorbers with facilely fabricated hierarchical porous Co/C crabapples
Paper

A self-recovering mechanochromic chiral π-gelator

Isothermal recovery of a mechanoresponsive chiral oligo(p-phenylenevinylene) derivative is demonstrated, where branched chiral chains facilitate the supramolecular chirality and mechanochromic response.

Graphical abstract: A self-recovering mechanochromic chiral π-gelator
Paper

Ultralight CoNi/rGO aerogels toward excellent microwave absorption at ultrathin thickness

Ultralight CoNi/rGO aerogels exhibit excellent microwave absorption performances at an ultrathin thickness of 0.8 mm.

Graphical abstract: Ultralight CoNi/rGO aerogels toward excellent microwave absorption at ultrathin thickness
Paper

Enhanced energy-storage performance with excellent stability under low electric fields in BNT–ST relaxor ferroelectric ceramics

Relaxor ferroelectrics are promising candidates for pulsed power dielectric capacitor applications because of their excellent energy-storage properties.

Graphical abstract: Enhanced energy-storage performance with excellent stability under low electric fields in BNT–ST relaxor ferroelectric ceramics
Paper

A facile random copolymer strategy to achieve highly conductive polymer gel electrolytes for electrochemical applications

A facile random copolymer strategy based on poly(styrene-ran-methyl methacrylate) (PS-r-PMMA) is proposed for the preparation of highly conductive and mechanically elastic solid-state gel electrolytes.

Graphical abstract: A facile random copolymer strategy to achieve highly conductive polymer gel electrolytes for electrochemical applications
Open Access Paper

13 mW operation of a 295–310 nm AlGaN UV-B LED with a p-AlGaN transparent contact layer for real world applications

Smart, high-power ultraviolet (UV)-B light-emitting diodes (LEDs) are demanded for real world applications, including vitamin D3 production in human skin (295–304 nm), immunotherapy (310 nm) and enriching phytochemicals in plants (310 nm).

Graphical abstract: 13 mW operation of a 295–310 nm AlGaN UV-B LED with a p-AlGaN transparent contact layer for real world applications
40 items

About this collection

This web collection features the top 40 most popular articles published in Journal of Materials Chemistry C in 2019. 

Congratulations to all of the authors whose articles have been featured!

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