Themed collection Journal of Materials Chemistry C HOT Papers
Alkyl-π functional molecular liquids towards soft electronics
Free deformable, stretchable soft electronic devices are targeted by utilizing alkyl-π functional molecular liquids.
The solution-processed fabrication of perovskite light-emitting diodes for low-cost and commercial applications
The solution-processed fabrication of perovskite light-emitting diodes (PeLEDs) is highly topical. Here, we summarize the recent advances, discuss the challenges and propose the outlooks for their further development.
The carbon–carbon triple bond as a tool to design organic semiconductors for photovoltaic applications: an assessment of prospects and challenges
This Perspective discusses the developments, opportunities, and challenges in the context of the use of alkyne-based organic semiconductors in photovoltaic devices.
Perspectives for polychlorinated trityl radicals
The multifunctional character and stability of PTM radicals makes them appealing in a broad range of fields, from active components in molecular optoelectronics to active agents in bio-applications.
Halide perovskite based light-emitting diodes: a scaling up perspective
Metal halide perovskite light-emitting diodes (PeLEDs) have aroused extensive attention due to their high color purity, wide color gamut, and low-cost solution processability, showing great potential for application in next-generation high-definition display and solid-state lighting.
Mid-infrared light-emitting properties and devices based on thin-film black phosphorus
Mid-infrared (MIR) radiation has a wide range of applications in military, environmental monitoring, and medical treatment.
Design of Biodegradable and Biocompatible Conjugated Polymers for Bioelectronics
Multifunctional layered hybrid perovskites
Layered hybrid perovskites incorporating organic moieties with enhanced functionalities within the perovskite scaffold enable the development of advanced multifunctional materials.
Fermi-level depinning of 2D transition metal dichalcogenide transistors
In this review, we summarize the recent progress on how to circumvent FLP between 2D TMD semiconductors and metals.
Acenaphthylene as a building block for π-electron functional materials
The paper reviews synthetic design and optoelectronic properties of π-conjugated molecules and polymers based on the acenaphthylene building block.
Solid-solution (alloying) strategies in crystalline molecular conductors
Solid solutions in molecular conductors are key tools for investigating their conducting and magnetic properties, addressing phase transitions, chemical pressure effects and band filling manipulation.
Solution-processing of semiconducting organic small molecules: what we have learnt from 5,11-bis(triethylsilylethynyl)anthradithiophene
Processing strategies and methodologies are reviewed that allow the control and assessment of polymorph formation in semiconducting small molecules using 5,11-bis(triethylsilylethynyl) anthradithiophene (TES ADT) as a model material system.
A review of functional linear carbon chains (oligoynes, polyynes, cumulenes) and their applications as molecular wires in molecular electronics and optoelectronics
This review presents the multi-faceted applications of oligoynes in molecular electronics and optoelectronics, as well as recent insights for the design and properties of sp-hybridised carbon wires.
Lanthanide-doped nanoparticles in photovoltaics – more than just upconversion
This review summarizes recent advances in developing high-efficiency upconversion nanoparticles and nanomaterials for photovoltaic application.
Metal–organic framework based systems for CO2 sensing
Monitoring CO2 levels in the atmosphere as well as in work place environments is strictly regulated.
Fabrication of conducting polymer microelectrodes and microstructures for bioelectronics
In this review, we provide an overview of the most recent advances in fabrication techniques for microelectrodes/micropatterns of CPs and highlight the most prominent applications of these in bioelectronic devices.
Dielectric materials for electrolyte gated transistor applications
In this review, the recent progress of different types of electrolyte dielectric materials for electrolyte gated transistors (EGTs) is summarized, along with the structures and operation of EGTs and their relevant applications.
A review on electrospun magnetic nanomaterials: methods, properties and applications
A comprehensive review summarising the methods, reagents, properties and applications of electrospun magnetic nanomaterials.
n-Type organic semiconducting polymers: stability limitations, design considerations and applications
This review summarises high performing n-type polymers for use in organic thin film transistors, organic electrochemical transistors and organic thermoelectric devices with a focus on stability issues arising in these electron transporting materials.
Two-dimensional intrinsic ferromagnets with high Curie temperatures: synthesis, physical properties and device applications
We reviewed recent advances in the field of 2D ferromagnets, including their atomic structures, physical properties, and potential applications, and highlight the strategies to enhance ferromagnetism.
White light emitting nanofibers constructed by electrospinning: advances and perspectives
In this overview, state-of-the art studies focused on WLENFs constructed and by electrospinning are systematically summarized.
Organic–inorganic hybrid thin film light-emitting devices: interfacial engineering and device physics
Organic–inorganic hybrid LEDs are reviewed from the perspectives of organic and inorganic functional materials, interfacial engineering, device structures and device physics.
High-performance as-cast non-fullerene polymer solar cells from benzo[1,2-b:4,5-b′]difuran polymer via a rational copolymer design
In this study, we introduced an ester-substituted thiophene into the benzo[1,2-b:4,5-b′]difuran (BDF)-based polymer (PDiFPBDF-TBz, F13) backbone to synthesize a novel polymer donor (F13-R) to develop the highly-efficient as-cast PSCs.
First-principles prediction of polar half-metallicity and out-of-plane piezoelectricity in two-dimensional quintuple layered cobalt selenide
Two dimensional Co2Se3 nanosheet simultaneously possesses out-of-plane electric polarization, ferromagnetism, half-metallic transportation and piezoelectricity, rendering it a promising candidate for advanced multiferroic applications.
Exploring the dark: detecting long-lived Nile Red 3ILCT states in Ru(II) polypyridyl photosensitisers
The commercial dye Nile Red has been used to produce two Ru(II) polypyridyl complexes with long-lived “dark” (non-emissive) triplet excited states. The latter localised on the Nile Red moiety are used for efficient singlet oxygen generation.
Single crystal field-effect transistor of tetrabenzoporphyrin with one-dimensionally extended columnar packing motif exhibiting efficient charge transport property
A novel and facile route for the in situ formation of composites with dual coupling interactions for considerable millimeter wave absorption performance
An in situ prepared BaZrxFe12−xO19/Fe3O4/BaZrO3 composite exhibits an outstanding millimeter wave absorption performance at around 35 GHz by gaining both the advantages of hard/soft magnetic exchange coupling and electromagnetic coupling.
2D perovskite narrowband photodetector arrays
2D perovskite narrowband photodetector arrays have been fabricated in this work, which can realize optical imaging with the ability of wavelength discrimination.
Lamellar silver thiolate coordination polymers with reversibly switchable blue-to-near infrared optical transitions
Lamellar silver thiolates (Ag-MPA) possess reversible temperature dependent blue-to-near infrared optical transitions resulting from metallophilic interactions in the layers and conformational stabilization of the ligands.
A two-dimensional ferroelectric ferromagnetic half semiconductor in a VOF monolayer
A stable 2D multiferroic VOF monolayer is proposed, in which ferroelectric and ferromagnetic orders coexist with a negative Poisson's ratio.
Unraveling the crucial role of spacer ligands in tuning the contact properties of metal–2D perovskite interfaces
The spacer ligand acts as a buffer layer and plays a crucial role in modulating the contact properties of metal–2D perovskite interfaces.
Fabrication of a γ-In2Se3/Si heterostructure phototransistor for heart rate detection
A γ-In2Se3/Si heterostructure phototransistor presents a high responsivity arising from the photogating effect. It shows potential applications in real-time and accurate health monitoring, such as heart rate detection.
Plasmon-induced charge separation based on a nanocomposite containing MoO2 under visible light irradiation
Plasmon-induced charge separation (PICS) was achieved with compound nanomaterials containing MoO2, which has a plasmon resonance wavelength close to gold.
The regulatory effect of triphenylphosphine oxide on perovskites for morphological and radiative improvement
The influence of a triphenylphosphine oxide (TPPO) additive on the morphology and emission of FAPbBr3 perovskites is investigated by transient and temperature-dependent emission spectra, which indicates the defect passivation through P=O coordination.
Stable down-conversion white light-emitting devices based on highly luminescent copper halides synthesized at room temperature
Blue-emissive Cs3Cu2I5 and yellow-emissive CsCu2I3 microscale crystals were synthesized by a facile supersaturated recrystallization method at room temperature, and a stable WLED was demonstrated by using both materials as down-conversion phosphors.
Pixelated full-colour small molecule semiconductor devices towards artificial retinas
Variable bandgap conjugated donor–acceptor small molecule thin films show absorption spectra similar to those of human eye's photoreceptors. Photoactive devices interfaced with a bio-electrolyte reveal capacitive photocurrent response making them suitable for future full-colour retinal prosthesis.
Bending TIPS-pentacene single crystals: from morphology to transistor performance
TIPS-pentacene single crystals crack or delaminate with increasing tensile or compressive bending strain, respectively. Even though, the electrical performance of the flexible transistors shows negligible decline due to the intact transport channel.
Barium-based scintillating MOFs for X-ray dosage detection with intrinsic energy resolution via luminescent multidentate naphthalene disulfonate moieties
Non-toxic Ba-SMOFs assembled by luminescent multidentate naphthalene-sulfonate moieties exhibit merited intrinsic energy resolution for X-ray dosage detection.
MOF-derived hexagonal In2O3 microrods decorated with g-C3N4 ultrathin nanosheets for efficient photocatalytic hydrogen production
We report the construction of highly efficient In2O3@g-C3N4 heterostructures with intimate contact for photocatalytic H2 production through decoration of g-C3N4 ultrathin nanosheets on the surface of MOF-derived hexagonal In2O3 microrods.
Small molecule-doped organic crystals towards long-persistent luminescence in water and air
A doped-crystalline material based on two organic small molecules exhibits visible long-persistent luminescence performance in aqueous solution or in air.
Enhanced stability and colorimetric detection on Ag(I) ions of a methylthio-functionalized Zn(II) metal–organic framework
A methylthio-functionalized metal–organic framework shows high stability, sensitivity (as low as 30 ppm) and distinguished color (dark brown) sensing towards Ag(I) ions by MOF-crystal colorimetry.
Single crystal to single crystal transformation of spin-crossover coordination polymers from 3D frameworks to 2D layers
New Hofmann-type metal–organic frameworks display rare and complete ligand exchange induced single crystal to single crystal transformations from 3D frameworks to 2D layers, accompanied by magnetic properties transition from two-step SCO behavior to hysteretic SCO behavior.
Aligned packaging of in situ grown CsPbBr3 nanorods within polystyrene nanofibers for enhanced polarized luminescence properties
We report a strategy for aligned packaging of in situ grown CsPbBr3 nanorods within polystyrene nanofibers for enhanced polarized luminescence properties, whose polarization ratio is 2.6 times that of the conventional counterpart.
CaSc2O4 hosted upconversion and downshifting luminescence
Nanomaterials of CaSc2O4:Yb/Ln (Ln = Tb, Eu) were investigated for dual-mode luminescence generation, where strong upconversion with a green/red intensity ratio as high as 45 and downshifting blue emissions were obtained at the characteristic working wavelengths of Yb3+ (980 nm) and Tb3+ (280 nm), respectively.
Anisotropic silica colloids for light scattering
Anisotropic silica particles were used as model scattering enhancers and directly compared to their spherical counterparts. Furthermore, silica rods were assembled into micron-sized scattering particles. This allows for use in pigment formulations.
Doped crystalline thin-film deep-blue organic light-emitting diodes
A doped crystalline thin-film deep-blue organic light-emitting diode (C-OLED) with high photon output and a low driving voltage is created through employing highly ordered and high-mobility organic semiconductor layers.
Photoinduced magnetic phase transition and remarkable enhancement of magnetization for a photochromic single-molecule magnet
A photochromic single-molecule magnet with large magnetization change (+20.9%) at room temperature and paramagnetic to ferromagnetic transition was successfully achieved.
Ba3[Al(PO4)3]: rational design of a promising deep-UV transparent SHG crystal with balanced overall performance originating from the condensation of quartz-type [Al(PO4)4]9− units
A DUV-transparent SHG crystal, Ba3[Al(PO4)3], was designed using a modified anionic condensation strategy. Ba3[Al(PO4)3] exhibited a balanced overall performance due to its condensed quartz-type ∞[Al(PO4)3]6− chains.
Ultrapure Green Light Emission in One-dimensional Hybrid Lead Perovskite: Achieving Recommendation 2020 Standard
A combined bottom-up and top-down strategy to fabricate lanthanide hydrate@2D MOF composite nanosheets for direct white light emission
Ultrasensitive broadband photodetectors based on two-dimensional Bi2O2Te films
A broadband photodetector consisted by Bi2O2Te and n-Si exhibits an ultrasensitive performance in the range of 210 nm to 2400 nm.
The Fabrication of Self-Powered CuInS2/TiO2 Heterojunction Photodetector and the Application in Visible Light Communication with Ultraviolet Light Encryption
Circularly polarized electroluminescence from an achiral fluorophore induced by co-assembly with chiral polymers
In this paper, this chiral supramolecular co-assembly (R/S-P2-Bpy) can not only emit deep blue CPL (λem = 420 nm, |gem| = 0.042) in spin-coated films, but also act as an EML of a CP-EL device (λem = 418 nm, |gEL| = 0.021).
Design optimization of CsPbBr3 nanocrystals into zeolite Beta composites as ultra-stable green emitters for backlight display applications
CsPbBr3 nanocrystals were encapsulated into zeolite Beta via a high temperature solid-state method demonstrating enhanced luminescent stability.
Alkyl chain regulation: distinctive odd–even effects of mechano-luminescence and room-temperature phosphorescence in alkyl substituted carbazole amide derivatives
A series of carbazole amide derivatives with different lengths from methyl to octyl (CAC-N, N = 1–8). Compounds with even-numbered alkyl chains exhibit mechanoluminescence (ML) property, however, no ML is observed in the odd-numbered counterparts.
Synthesis and characterization of ultralong copper sulfide nanowires and their electrical properties
We report the synthesis of novel ultralong core–shell Cu2−xS nanowires (NWs). The NWs present high flexibility, stability to acids and oxidants and low resistivity (6.9 × 10−6 Ω m). They also exhibit promising performances as supercapacitors.
Achieving Visible-Light-Excited Organic Room-Temperature Phosphorescence by Manipulating p-π Conjugation
Precursor-Compensation Strategy Boosts Photoresponse Performance of Air-stable, Self-powered Cs2SnI6 Photodetectors
A zero-thermal-quenching perovskite-like phosphor with an ultra-narrow-band blue-emission for wide color gamut backlight display applications
A novel perovskite-like K2BaPO4F:Eu2+ phosphor exhibits an unprecedented ultra-narrow-band (FWHM = 25 nm) blue-emission (λem = 439 nm) and a zero-thermal-quenching property up to a temperature of 125 °C.
Enhanced photon harvesting by embedding cost-effective polystyrene microspheres as light scatterers in the perovskite photodetector
Solution processed perovskite photodetectors have attracted extensive interest in recent years.
Comprehensive Raman study of orthorhombic κ/ε-Ga2O3 and the impact of rotational domains
Manipulating the Intermolecular Stacking of Polymeric Donors for Efficient Organic Solar Cells
Nature of the surface space charge layer on undoped SrTiO3 (001)
Chemically stable SrO1+x surface oxide with c(6×2) superstructure is formed, creating space charge layer and surface band bending effects on undoped SrTiO3 (001), under elevated oxygen pressure and temperature conditions.
Novel 12,12-dimethyl-7,12-dihydrobenzo[a]acridine as a deep-blue emitting chromophore for OLEDs with narrow-band emission and suppressed efficiency roll-off
Two new deep-blue emitters based on 12,12-dimethyl-7,12-dihydrobenzo[a]acridine provide efficient narrow-band deep-blue emission and suppressed efficiency roll-off in OLED devices.
Distorted octahedral site occupation-induced high-efficiency broadband near-infrared emission in LiScGe2O6:Cr3+ phosphor
Benefiting from a proposed distorted octahedral site occupation strategy using Cr3+, we demonstraed a high-efficiency broadband NIR-emitting phosphor LiScGe2O6:Cr3+ peaking at 886 nm with a full width at half maximum of 160 nm and a record external quantum efficiency of ∼40%.
A high-performance NiO/TiO2 UV photodetector: the influence of the NiO layer position
The influence of NiO layer position in NiO/TiO2 hybrid detectors has been studied. Both devices show highly selective absorption in the ultraviolet range. The D-NT PD showed a low dark current, a high on/off ratio and self-powered performance.
Utilization of double-sensitized structure toward achieving high performance green and red phosphorescent organic light-emitting diodes
High performance green and red phosphorescent OLEDs with double-sensitized structure by using deep lowest unoccupied molecular orbital level iridium(III) complex as sensitizer.
Discovery of and insights into one-photon and two-photon excited ACQ-to-AIE conversion via positional isomerization
With bay- and ortho-substituted perylenetetracarboxylic diimide derivatives, one-photon and two-photon excited ACQ-to-AIE conversion is realized through simple positional isomerization.
Detection of polyamines by an extended gate-type organic transistor functionalized with a carboxylate attached 1,3,4-thiadiazole derivative
An extended-gate-type organic transistor functionalized with a carboxylate attached 1,3,4-thiadiazole derivative (TMT) allowed multi-polyamine discrimination based on a competitive assay among the TMT-based monolayer, copper(II) ions, and polyamines.
Manipulating crystals through photoexcitation-induced molecular realignment
A photoexcitation-induced molecular realignment strategy is demonstrated to yield steady-state crystals with fluorescence–phosphorescence behavior.
About this collection
This on-going web collection features all the articles published in Journal of Materials Chemistry C in 2021 marked as HOT (selected by our Editors as especially significant based on reviewers’ recommendations and their own appraisal). Congratulations to all the authors whose articles are featured!