Themed collection Journal of Materials Chemistry C Lunar New Year collection 2021
Circularly polarized luminescence from AIEgens
This work systematically summarizes recent advances in circularly polarized luminescence (CPL) based on aggregation-induced emission luminogens (AIEgens).
Colloidal quantum dot hybrids: an emerging class of materials for ambient lighting
Electroluminescence light-emitting diodes enabled by hybridising colloidal quantum dots is an emerging technology for large-area and foldable ambient lighting. We summerise state-of-the-art scientific challenges and prospect their future development.
Electrides: a review
Electrides are systems in which an electron is not bound to an atom and plays an active role in the structure. The three types of electron confinement have been confirmed.
Digital manufacturing of functional materials for wearable electronics
A review of the recent developments of digital manufacturing methods of functional materials for wearable electronics applications.
Metal–organic frameworks: opportunities and challenges for surface-enhanced Raman scattering – a review
MOF-based substrates and their SERS applications.
Recent advances in high performance blue organic light-emitting diodes based on fluorescence emitters
This review summarizes recent advances in blue OLEDs based on fluorescence emitters, especially focusing on the different mechanisms involving the emitters and devices.
Emerging black phosphorus analogue nanomaterials for high-performance device applications
Black phosphorus analogues with excellent performance and high chemical stability hold great promise for practical applications.
Copper nanowires in recent electronic applications: progress and perspectives
This article outlines the latest advances of copper nanowires in electronic applications, including flexible transparent electrodes for optical devices, current collectors for lithium-ion batteries, and stretchable electrodes for wearable devices.
Recent progress in the development of molecular-scale electronics based on photoswitchable molecules
Recent advances in photoswitchable molecular devices based on single molecules or self-assembled monolayers of photochromic molecules are summarized and discussed.
Recent developments in emerging two-dimensional materials and their applications
The technological evolution has been progressing for centuries and will possibly increase at a higher rate in the 21st century.
High-efficiency thermally activated delayed fluorescence emitters via a high horizontal dipole ratio and controlled dual emission
OLED devices based on linear rod-like TADF emitters exhibited high device efficiencies of 29.9% and 25.8% by means of high horizontal emitting dipole orientation and controlled dual emission.
Bismuth halide perovskite derivatives for direct X-ray detection
A one-dimensional bismuth-based perovskite derivative (DMEDA)BiI5 was investigated for X-ray photoelectric detection.
Improving the performance of near infrared binary polymer solar cells by adding a second non-fullerene intermediate band-gap acceptor
A series of ternary OSCs were fabricated with PBDB-T-2Cl:IXIC-4Cl as a host system and IT-4F as the third component. The optimal ternary device achieved an excellent PCE of 15.0%.
Hierarchical CoxAly layered double hydroxide@carbon composites derived from metal–organic frameworks with efficient broadband electromagnetic wave absorption
Porous carbon-based composites have attracted extensive attention because of their good performance.
Methoxylation of quinoidal bithiophene as a single regioisomer building block for narrow-bandgap conjugated polymers and high-performance organic field-effect transistors
Methoxyl group was introduced to obtain isomer-free methoxylation quinoidal bithiophene building block. Four polymers displayed narrow bandgap (<1.20 eV) and hole mobility of up to 2.70 cm2 V−1 s−1.
Effects of alkoxylation position on fused-ring electron acceptors
Four fused-ring electron acceptors composed of the same core and end groups without or with hexyloxyl groups on the core and/or phenyl side chains are compared to systematically study the effects of alkoxylation position on the molecular packing, optical, electronic, and photovoltaic properties of the nonfullerene acceptors.
“Heavy-atom effects” in the parent benzochalcogenopheno[3,2-b]benzochalcogenophene system
Effects of the chalcogen atoms in benzochalcogenopheno[3,2-b]benzochalcogenophenes (BXBXs), the key π-conjugated core structures in the development of superior organic semiconductors, are investigated.
Effect of ortho-biphenyl substitution on the excited state dynamics of a multi-carbazole TADF molecule
Multi-carbazole TADF molecules with an ortho-biphenyl local triplet scaffold exhibiting an EQE of 23.7% and a LT50 of 750 hours.
Gradient porous PNIPAM-based hydrogel actuators with rapid response and flexibly controllable deformation
Gradient PNIPAM-based intelligent hydrogels with bidirectional bending properties can realize flexibly controllable deformation and activity as soft actuators.
Achieving multiple emission states and controllable response behaviour in thermochromic luminescent materials for security applications
In this work, thermochromic luminescent materials with three emission states and controllable thermochromic transition temperatures were developed for multilevel anti-counterfeiting and high-security level information storage.
A highly fluorescent covalent organic framework as a hydrogen chloride sensor: roles of Schiff base bonding and π-stacking
In this paper we report the extremely crystalline structures, high thermal stabilities, and strong fluorescence emissions of covalent organic frameworks based on linked carbazole units.
Near-infrared absorbing pyrrolopyrrole aza-BODIPY-based donor–acceptor polymers with reasonable photoresponse
Designing near-infrared (NIR) absorbing donor–acceptor (D–A) polymers with photoresponse beyond 900 nm has remained a challenge in the area of organic photovoltaics (OPV) owing to the limited kinds of strong electron acceptors.
A multifunctional wearable E-textile via integrated nanowire-coated fabrics
We demonstrate a novel multifunctional E-textile which functions as a pressure sensor, Joule heater, thermal insulator, and PM2.5 filter.
Aggregation-state engineering and emission switching in D–A–D′ AIEgens featuring dual emission, MCL and white electroluminescence
D–A–D′ AIEgens exhibit dual emission involving a blue TADF (monomer) and an orange TADF/RTP (dimer), which are switchable via aggregation-state engineering, and demonstrate high contrast MCL as well as white EL emission with high CRI.
Simultaneous realization of high-efficiency, low-drive voltage, and long lifetime TADF OLEDs by multifunctional hole-transporters
A smart high-triplet energy hole-transporter exhibits significant stability in the anion state realizing record-breaking highly efficient and long-living thermally activated delayed fluorescent (TADF) organic light-emitting devices (OLEDs).
Morphology and properties of PEDOT:PSS/soft polymer blends through hydrogen bonding interaction and their pressure sensor application
The effects of the composition on the stretchability and conductivity of poly(3,4-ethylenedioxythiophene):poly(styrene sulfonate) (PEDOT:PSS) polymer blends with soft polymers poly(acrylic acid) (PAA) and their application in pressure sensors.
Prediction of high carrier mobility for a novel two-dimensional semiconductor of BC6N: first principles calculations
First principles calculations are performed to predict phonon-limited carrier mobility for a novel graphene-like semiconductor with BC6N stoichiometry.
Relaxor/antiferroelectric composites: a solution to achieve high energy storage performance in lead-free dielectric ceramics
Compared with the relaxor with pinched P–E loops, the relaxor/antiferroelectric (RE/AFE) composites have narrower and oblique curves, proving the design of RE/AFE is an effective method to improve the energy storage properties of dielectric ceramics.
Non-enzymatic electrochemical glucose sensors based on polyaniline/reduced-graphene-oxide nanocomposites functionalized with silver nanoparticles
We demonstrate silver (Ag) nanoparticle decorated polyaniline (PANI) and reduced graphene oxide (rGO) as Ag–PANI/rGO nanocomposites to realize non-enzymatic glucose sensors.
Rapid synthesis and mechanochemical reactions of cesium copper halides for convenient chromaticity tuning and efficient white light emission
Emitting wavelength of cesium copper halides can be effectively tuned by regulating the process of mechanochemical reaction firstly.
Full-visible-spectrum lighting enabled by an excellent cyan-emitting garnet phosphor
Cyan-emitting Ca2YHf2Al3O12:xCe3+ garnet phosphors with a high photoluminescence quantum efficiency of up to 89.5% were developed for fabricating high color rendering warm-white LEDs.
Temperature stable Li2Ti0.75(Mg1/3Nb2/3)0.25O3-based microwave dielectric ceramics with low sintering temperature and ultra-low dielectric loss for dielectric resonator antenna applications
The LTMN0.25 + 1 wt% 0.6CuO–0.4B2O3 ceramic with low sintering temperature, small density and excellent performance have wide application prospects in 5G devices.
Methoxy substituents activated carbazole-based boron dimesityl TADF emitters
Five N-borylated TADF emitters bearing both boron dimesityl acceptor and methoxy substituted carbazole are presented with electroluminescence ranging from 444 to 468 nm, and with the best maximum external quantum efficiency of 13.3%.
Highly efficient near-UV-excitable Ca2YHf2Al3O12:Ce3+,Tb3+ green-emitting garnet phosphors with potential application in high color rendering warm-white LEDs
Novel near-UV-excitable Ca2YHf2Al3O12:Ce3+,Tb3+ green phosphors with a highest internal quantum efficiency of 86.6% and external quantum efficiency of 63.1% were reported for high-CRI warm-white LEDs.
Enhancing thermal conductivity via conductive network conversion from high to low thermal dissipation in polydimethylsiloxane composites
Thermal conductivities of polymer composites are enhanced by several orders of magnitude via conductive network conversion from high to low thermal dissipation.
The photocatalytic phenol degradation mechanism of Ag-modified ZnO nanorods
ZnO/Ag/Ag2O accelerates phenol degradation through different intermediate processes under white light illumination.
Non-toxic green food additive enables efficient polymer solar cells through adjusting the phase composition distribution and boosting charge transport
Solvent additives play an important role in optimizing the morphology of the photoactive layer and improving the photovoltaic performance of polymer solar cells (PSCs).
DDAB-assisted synthesis of iodine-rich CsPbI3 perovskite nanocrystals with improved stability in multiple environments
Optimized method for synthesis of CsPbI3 NCs using dodecyldimethylammonium bromide as capping molecules can achieve enhanced stability.
As2S3, As2Se3 and As2Te3 nanosheets: superstretchable semiconductors with anisotropic carrier mobilities and optical properties
Mechanical response, dynamical/thermal stability, electronic/optical properties and photocatalytic features of monoclinic As2X3 (X = S, Se and Te) nanosheets are explored via DFT simulations. As2Te3 lattice predicted by this study is found to exhibit superior superstretchability, outperforming other known 2D materials.
Highly efficient blue thermally activated delayed fluorescence organic light emitting diodes based on tercarbazole donor and boron acceptor dyads
Two new blue TADF emitters, 3CzTB and M3CzB, for application in highly efficient organic light-emitting diodes are reported.
(Na0.5Bi0.5)0.7Sr0.3TiO3 modified by Bi(Mg2/3Nb1/3)O3 ceramics with high energy-storage properties and an ultrafast discharge rate
Novel (Na0.5Bi0.5)0.7Sr0.3TiO3-based lead-free ceramics with vastly improved energy-storage properties for high power system applications.
Pyrimidine-based bipolar host materials for high efficiency solution processed green thermally activated delayed fluorescence OLEDs
In this study, three bipolar host materials (i.e.Py2Cz, Py2BFCz, and Py2ICz) for solution-processable green-emitting TADF-OLEDs were synthesized by coupling 2,4-diphenylpyrimidine to mCP and modifying the carbazole-donating units in the mCP structure.
Rational design of 2D hierarchically laminated Fe3O4@nanoporous carbon@rGO nanocomposites with strong magnetic coupling for excellent electromagnetic absorption applications
2D hierarchically laminated Fe3O4@NPC@rGO nanocomposites exhibited excellent electromagnetic absorption owing to their micro-scale 3D magnetic coupling network, hierarchical dielectric carbon network and superior impedance matching.
Interface modification of sputtered NiOx as the hole-transporting layer for efficient inverted planar perovskite solar cells
An appropriately combined triple interface modification, i.e., post-annealing, O2-plasma, and KCl treatments, is employed to ameliorate the optoelectronic properties of sputtered NiOx films and achieve better device performance.
A wearable, self-adhesive, long-lastingly moist and healable epidermal sensor assembled from conductive MXene nanocomposites
MXene nanocomposites exhibit self-healing capability, self-adhesive performance and long-lasting moisture, and can be assembled as epidermal sensors to wirelessly detect human motion.
VSe2 nanosheets for ultrafast fiber lasers
In this work, we investigate VSe2 for generating femtosecond and large energy mode-locked laser pulses for the first time.
Orange-red and white-emitting nonconventional luminescent polymers containing cyclic acid anhydride and lactam groups
Nonconventional luminescent copolymers poly(itaconic anhydride-co-vinyl caprolactam) (PIVC) and poly(itaconic anhydride-co-vinyl pyrrolidone) (PIVP) emit strong orange-red and bright white emissions, respectively.
A broadband cyan-emitting Ca2LuZr2(AlO4)3:Ce3+ garnet phosphor for near-ultraviolet-pumped warm-white light-emitting diodes with an improved color rendering index
Broadband cyan-emitting Ca2LuZr2(AlO4)3:Ce3+ garnet phosphors enabled to fill the cyan gap in the emission spectra of near-ultraviolet-pumped warm-white LEDs, thus resulting in improved color rendering index.
Greatly enhanced discharge energy density and efficiency of novel relaxation ferroelectric BNT–BKT-based ceramics
The 0.65(NBT-BKT)–0.35SBT ceramic possesses an ultra-high recoverable energy storage density (Wrec ∼ 4.06 J cm−3) and maintains a relatively high efficiency (η = ∼87.3%).
Flexible PVDF/carbon materials/Ni composite films maintaining strong electromagnetic wave shielding under cyclic microwave irradiation
In current work, multiwalled carbon nanotubes (MWCNTs), graphene nanoplatelets (GnPs) and nickel (Ni chains or flowers) were evenly dispersed in poly(vinylidene fluoride) (PVDF) matrices to fabricate composite flexible films.
About this collection
To mark the Lunar New Year, this web collection features the top 50 most popular articles published in Journal of Materials Chemistry C in 2020 by corresponding authors based in Asia.
Congratulations to all of the authors whose articles have been featured!