Themed collection 2019 Journal of Materials Chemistry C HOT Papers
Advances in polyarylethers: opening new opportunities
High performance engineering thermoplastics are being extended to high-dimensional porous materials and sustainable biomass-driven materials.
Towards organic neuromorphic devices for adaptive sensing and novel computing paradigms in bioelectronics
We present an overview of the latest studies on organic neuromorphic and smart sensing devices and highlight the potential of these concepts to enhance the interaction efficiency between electronics and biological substances.
Photons and charges from colloidal doped semiconductor quantum dots
This work discusses the photophysical pathways in doped quantum dots responsible for generating photons of non-exciton origin and hot electrons.
The role of excitons in 3D and 2D lead halide perovskites
Excitons in lead halide perovskites often go unnoticed as minority species, yet they account for almost all of light emission.
Methylamine-induced defect-healing and cationic substitution: a new method for low-defect perovskite thin films and solar cells
Methylamine-induced defect-healing and cationic substitution was reviewed for low defect perovskite films with better crystal quality and high stability.
Bio-inspired sensing and actuating materials
Biological systems contain various amazing examples that can display adaptive and active behaviors in response to external stimuli.
Structural origins of the electronic properties of materials via time-resolved infrared spectroscopy
Time-resolved mid-infrared spectroscopy provides new opportunities to probe the structural origins of electronic and transport states in optoelectronic materials.
Recent developments in stimuli-responsive luminescent films
Luminescent films have attracted a great amount of attention due to their unique properties and various potential applications in optical displays, sensors and switches.
Physical vapour deposition of vanadium dioxide for thermochromic smart window applications
In this paper, various PVD techniques, such as pulsed laser deposition (PLD), evaporation decomposition (ED) and sputtering, are examined with respect to their conditions for VO2 fabrication, film quality and the strategies for film improvements.
Recent progress on highly sensitive perovskite photodetectors
The recent progress and developments on perovskite photodetectors are summarized from the perspective of device physics and materials science.
Luminescent perovskite quantum dots: synthesis, microstructures, optical properties and applications
The synthesis, microstructures, optical properties and promising applications of luminescent perovskite quantum dots in optoelectronic fields are systematically reviewed.
Recent progress in printable organic field effect transistors
Downscaling of printable OFETs and approaches for steep subthreshold swing have been summarized and discussed.
Enantiomerism, diastereomerism and thermochromism in two Cu7I4 cluster-based coordination polymers
Reactions of CuI and 5-(3-pyridyl)tetrazole in CH3CN and n-BuOH/NH3·H2O gave, respectively, the dual-channel emissive coordination polymers, 1 as a conglomerate of enantiomers and 2 as a meso condensate, which exhibits thermochromic luminescence.
Multi-mode structural-color anti-counterfeiting labels based on physically unclonable amorphous photonic structures with convenient artificial intelligence authentication
The first physically unclonable anti-counterfeiting label based on structural colors was enabled by interfacing amorphous photonic structures with artificial intelligence.
Phenanthroimidazole derivatives with minor structural differences: crystalline polymorphisms, different molecular packing, and totally different mechanoluminescence
Two crystalline polymorphs of tPTI-Bpin display opposite mechanoluminescence activities, mainly derived from their different conformations of packing modes in crystals.
Enhanced piezoresistive performance of 3C-SiC nanowires by coupling with ultraviolet illumination
We reported an effective strategy for enhancing the piezoresistive behaviors of SiC nanowires by coupling with UV illumination.
Self-assembly of coordination polymers on plasmonic surfaces for computer vision decodable, unclonable and colorful security labels
An unclonable, colorful, and computer vision decodable anti-counterfeiting label is fabricated by self-assembly of coordination polymers on plasmonic surfaces. The physics behind the colors on the security label is surface plasmon enhanced optical interference.
Triphenylpyrazine: methyl substitution to achieve deep blue AIE emitters
Based on our deep comprehension of the unique excited state decay process of tetraphenylpyrazine derivatives, triphenylpyrazine-3-carbazole (TrPP-3C) was designed by replacing the phenyl group with a methyl group at the 3-position of pyrazine.
An unusual plank-shaped nematogen with a graphene nanoribbon core
Laterally decorated ribbon-shaped graphene segments made of twelve benzene units self-assemble into a nematic anisotropic glass at room temperature with high birefringence and polarized fluorescence.
Barium acetate as an additive for high performance perovskite solar cells
Defects within the halide perovskite films limit the efficiency and stability of perovskite solar cells (PSCs).
Enhancing the intermolecular singlet fission efficiency by controlling the self-assembly of amphipathic tetracene derivatives in aqueous solution
Introduction of the carboxyl group onto tetracene can change the singlet fission mechanism and increase the singlet fission yield in its nanoparticles.
Stretchable multi-luminescent fibers with AIEgens
Stretchable multicolor light-emitting fibers were realized by incorporating an ultralow content of AIEgens in polydimethylsiloxane fibers through a continuous dry–wet spinning process for applications in smart textiles.
Solution-processable zinc oxide nanorods and a reduced graphene oxide hybrid nanostructure for highly flexible and stable memristor
A memristor composed of a 1D–2D nanostructure exhibits superior flexibility and stability.
Tunable 3D light trapping architectures based on self-assembled SnSe2 nanoplate arrays for ultrasensitive SERS detection
We demonstrate tunable 3D light trapping (up to ∼96%) architectures based on the SnSe2 nanoplate arrays (NPAs) via self-assembled growth and high performance (EF: 6.33 × 106, LOD: 1 × 10−12 M) SERS substrates based on SnSe2 NPAs.
A dithieno[3,2-b:2′,3′-d]pyrrole-cored four-arm hole transporting material for over 19% efficiency dopant-free perovskite solar cells
A dithieno[3,2-b:2′,3′-d]pyrrole-cored four-arm hole transporting material has been designed to realize over 19% efficiency dopant-free perovskite solar cells.
Binary cooperative flexible magnetoelectric materials working as self-powered tactile sensors
This study will demonstrate the fabrication of binary cooperative flexible magnetoelectric materials and their application in self-powered tactile sensors.
A high temperature optic-electric duple switching organic ionic compound: 1,4,7-triazoniacyclononane tetrafluoroborate dichloride
[9-tacn-3]3+[BF4]−2[Cl]− (9-tacn-3 = 1,4,7-triazoniacyclononane) is a second-order nonlinear and dielectric switch with a phase transition temperature as high as 400 K.
Enhancing the thermoelectric performance of Cu1.8S by Sb/Sn co-doping and incorporating multiscale defects to scatter heat-carrying phonons
(Sb, Sn) co-doping optimizes the carrier concentration of Cu1.8S and constructs multiscale defects, leading to ZTmax of 1.2 at 773 K.
A novel information storage and visual expression device based on mechanoluminescence
A novel information storage and visual expression device records the pre-stressed region and expresses the information via light emission.
Highly luminescent CsPbBr3 nanorods synthesized by a ligand-regulated reaction at the water–oil interface
We have synthesized highly luminescent CsPbBr3 nanorods through an oriented-attachment mechanism assisted by the ligand-regulation at the water–oil interface.
Transient fiber-shaped flexible electronics comprising dissolvable polymer composites toward multicolor lighting
Dissolvable and flexible light emitting fibers toward multicolor lighting are fabricated via an all-solution processing method.
Fluorescent microdiamonds conjugated with hollow gold nanoparticles as photothermal fiducial markers in tissue
The dual functions—photo-thermal therapy and fluorescent imaging—of the surface-functionalized fluorescent microdiamonds (FMDs) with hollow gold nanoparticles (HGNs) were performed when applying two distinct excitation laser wavelengths.
An integrated self-healable and robust conductive hydrogel for dynamically self-adhesive and highly conformable electronic skin
A novel dynamic self-adhesive and self-healable conductive hydrogel material that is applicable to highly conformal and ultrasensitive electronic skin devices.
Tuning the organic persistent room-temperature phosphorescence through aggregated states
An organic material exhibited interesting polymorphism of persistent room-temperature phosphorescence by changing its aggregated states.
A photo-switchable and photo-tunable microlens based on chiral liquid crystals
We demonstrate a photo-switchable and photo-tunable microlens based on chiral liquid crystals doped with an azobenzene chiral dopant immersed in water.
Peroxidase-AgAu hybrid nanocages as signal transducers for sensitive plasmonic colorimetric sensing
Peroxidase functionalized silver–gold nanocages were developed as a type of highly sensitive signal transducer for plasmonic colorimetric sensing.
A novel reversible fluorescent probe for the highly sensitive detection of nitro and peroxide organic explosives using electrospun BaWO4 nanofibers
Electrospun rare-earth-doped BaWO4 nanofibers as a reversible fluorescent probe for the highly sensitive detection of nitro and peroxide organic explosives. The luminescence of the nanofibers is retained completely as fresh nanofibers upon heating.
Electrical transport characteristics of chemically robust PDPP-DTT embedded in a bridged silsesquioxane network
Chemically robust films of PDPP-DTT imbedded within a bridged silsesquioxane exhibit superior electrical transport characteristics than what are achieved from neat films of PDPP-DTT.
Highly efficient nondoped blue organic light-emitting diodes with high brightness and negligible efficiency roll-off based on anthracene-triazine derivatives
A nondoped device based on the PIAnTAZ emitter shows blue electroluminescence with a maximum EQE of 7.96%, a maximum luminance of 58 675 cd m−2 and negligible efficiency roll-offs.
Influence of the acceptor crystallinity on the open-circuit voltage in PTB7-Th: ITIC organic solar cells
The influence of the solution components on the VOC in PTB7-Th: ITIC organic solar cells was studied by several analytical techniques (AFM, GIWAXS, EL), focusing on an inside understanding to the mechanism of the active layer morphology on the VOC.
Controllable synthesis of barnyardgrass-like CuO/Cu2O heterostructure nanowires for highly sensitive non-enzymatic glucose sensors
Barnyardgrass-like CuO/Cu2O heterostructure nanowires were rationally constructed via a synergistic approach integrating precipitation and microwave process based on porous Cu(OH)2 nanorods and exhibit commendable glucose detection capacity.
Yttrium-doped CuSCN thin film transistor: synthesis and optoelectronic characterization study
A transparent thin film transistor of yttrium-doped CuSCN has been devised with a remarkable hole mobility of 0.99 cm2 V−1 s−1.
Thermally activated delayed fluorescence enantiomers for solution-processed circularly polarized electroluminescence
Enantiomers with circularly polarized (CP) thermally activated delayed fluorescence were designed in a chiral-D–A architecture for solution-processed high-efficiency CP-OLEDs.
Anion-regulated transient and persistent phosphorescence and size-dependent ultralong afterglow of organic ionic crystals
Regulation and the transient and persistent room-temperature phosphorescence of organic ionic crystals by the alteration of anions, and unique size-dependent ultralong afterglow of specific organic crystals under ambient conditions were reported.
Tailoring the electrocaloric effect of Pb0.78Ba0.2La0.02ZrO3 relaxor thin film by GaN substrates
The electrocaloric (EC) effect in ferroelectric/antiferroelectric thin films has been widely investigated due to its potential applications in solid state cooling devices.
Multi-colored hollow carbon-containing titania nanoshells for anti-counterfeiting applications
Hollow nanoshells composed of titania and carbon have been fabricated, displaying striking colors with considerably high contrast by Mie resonance. They respond rapidly and reversibly to the changes in the refractive index of the surrounding medium.
High-performance CdScInO thin-film transistors and their stability improvement under negative bias (illumination) temperature stress
CdScInO TFTs exhibit excellent stability under NBTS at 80 °C or under NBIS with red light or green light illumination.
Two-dimensional CdX (X = Se, Te) nanosheets: controlled synthesis and their photoluminescence properties
Two-dimensional (2D) CdX (X = Se, Te) nanosheets are potential candidates for novel optoelectronic applications.
Highly efficient deep-blue light-emitting copolymers containing phenoxazine: enhanced device efficiency and lifetime by blending a hole transport molecule
High efficiency and enhanced lifetime of deep-blue PLEDs were achieved by blending phenoxazine-based copolymers with a hole transport molecule.
Low surface energy interface-derived low-temperature recrystallization behavior of organic thin films for boosting carrier mobility
A facile strategy to recrystallize an organic semiconductor thin film to attain the desirable smooth morphology for boosting carrier mobility.
Self-assembly of luminescent 42-metal lanthanide nanowheels with sensing properties towards metal ions and nitro explosives
Two 42-metal lanthanide nanowheels [Ln42L14(OH)28(OAc)84] (Ln = Yb (1), Sm (2)) with a NIR luminescent response towards metal ions and nitro explosives were constructed.
A strategy for developing thermal-quenching-resistant emission and super-long persistent luminescence in BaGa2O4:Bi3+
A novel BaGa2O4:0.02Bi3+ phosphor with excellent thermal-quenching-resistant emission and super-long persistent luminescence has been synthesized and systematically investigated.
Boosting the intrinsic carrier mobility of two-dimensional pnictogen nanosheets by 1000 times via hydrogenation
Hydrogenation boosts carrier mobilities in 2D pnictogens by more than 1000 times.
Second-order nonlinear optical properties of fullerene-fused dihydrocarboline derivates: a theoretical study on switch effect
The theoretical calculations show that fullerene-fused dihydrocarboline derivatives exhibit significant first hyperpolarizability contrasts induced by their electrochemical feature.
A wearable helical organic–inorganic photodetector with thermoelectric generators as the power source
A self-powering feature is particularly appealing for wearable electronic devices, in particular, photodetectors (PDs), as promising candidates for health and environment monitoring, are urgently desired to be made wearable and powerless.
One-dimensional π–π stacking induces highly efficient pure organic room-temperature phosphorescence and ternary-emission single-molecule white light
High-efficiency RTP of TX-Cl crystal was induced by one-dimensional π–π stacking, which significantly enhances both intersystem crossing (S1 → Tn) and radiative rate (T1 → S0). SMWLE was harvested by precisely controlling aggregating degree.
Fine tuning of pyridinium-functionalized dibenzo[a,c]phenazine near-infrared AIE fluorescent biosensors for the detection of lipopolysaccharide, bacterial imaging and photodynamic antibacterial therapy
A series of NIR fluorescent probes of dibenzophenazine pyridine salt with different alkyl chain were developed for the detection of LPS. BD2C with ethyl chain exhibited a significant improvement of the singlet oxygen yield and antibacterial property.
Highly ordered columnar superlattice nanostructures with improved charge carrier mobility by thermotropic self-assembly of triphenylene-based discotics
A series of triphenylene esters with two ester groups at different substituent positions was synthesized and investigated. 3,6-substituted molecule formed a helical hexagonal columnar superstructure, leading to improved charge carrier mobility.
Multifunctional applications of triazine/carbazole hybrid thermally activated delayed fluorescence emitters in organic light emitting diodes
A novel meta-linked carbazole/triazine thermally activated delayed fluorescence (TADF) material exhibits multiple functions in OLEDs as a doped and non-doped blue emitter, as a host for other dopants, and as a host emitter in white OLEDs.
Synthesis of large-area 2D WS2 films and fabrication of a heterostructure for self-powered ultraviolet photodetection and imaging applications
High-performance self-powered ultraviolet (UV) photodetector based on a WS2/GaN heterojunction was demonstrated, which exhibits excellent UV photoresponse properties. Significantly, this photodetector has exhibited excellent UV imaging capability.
Near-infrared polymer light-emitting diodes based on an inverted device structure
Micro-cavity effects were applied to acquire near-infrared emission using normal red-emitting materials through an inverted device structure.
Infrared micro-detectors with high sensitivity and high response speed using VO2-coated helical carbon nanocoils
Micro-bolometers based on VO2 and carbon nanocoils are developed in this work. The photoresponse of the micro-bolometer is greatly enhanced by the helical structure of the device.
Fine-grain induced outstanding energy storage performance in novel Bi0.5K0.5TiO3–Ba(Mg1/3Nb2/3)O3 ceramics via a hot-pressing strategy
Fine-grain induced ultrahigh energy storage density and fast discharge speed in novel Bi0.5K0.5TiO3–Ba(Mg1/3Nb2/3)O3 ceramics via a hot-pressing strategy.
Epitaxial growth of large-scale In2S3 nanoflakes and the construction of a high performance In2S3/Si photodetector
MoS2-like layered 2D materials have attracted attention worldwide due to their intriguing material properties.
Polarized resonance synchronous spectroscopy as a powerful tool for studying the kinetics and optical properties of aggregation-induced emission
Light scattering and absorption both contribute to the UV-vis extinction quantified with a UV-vis spectrophotometer, but they differ drastically in their causes and effects.
Insight from the old: mechanochromism and mechanoluminescence of two amine-containing tetraphenylethylene isomers
The mechanochromism (MC) and mechanoluminescence (ML) properties of an “old” tetraphenylethylene derivative p-NH2 and its isomer m-NH2 were investigated.
Charge transport effect and photovoltaic conversion of two-dimensional CdSeS quantum dot monolayers in inverted polymer solar cells
Herein, we demonstrate that two-dimensional (2D) CdSeS quantum dot monolayers (QDM) can strongly influence efficient charge transport and charge separation, improving the performance of inverted polymer solar cells (iPSCs).
Improvement in efficiency and stability of quantum dot/polymer nanocomposite film for light-emitting diodes using refractive index-controlled quantum dot–silica hybrid particles
Controlling refractive index of hybrid particles suppressed light scattering and enhanced efficiency and stability of nanocomposite film.
A search for extra-high brightness laser-driven color converters by investigating thermally-induced luminance saturation
Clarification of thermal saturation helps to guide the design of high-brightness yellow and green components for laser lighting and displays.
Graphene quantum dot/Co(OH)2 electrode on nanoporous Au–Ag alloy for superior hybrid micro-supercapacitors
Graphene quantum dot (GQD)/Co(OH)2 composite based wire-shaped, quasi-solid-state hybrid supercapacitor device exhibits enhanced specific capacitance, a high capacitance retention rate and superior device stability.
About this collection
This on-going web collection features all the articles published in Journal of Materials Chemistry C in 2019 marked as HOT, as recommended by referees. Congratulations to all the authors whose articles are featured!