Themed collection 2021 Journal of Materials Chemistry C most popular articles
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Electrically conductive covalent organic frameworks: bridging the fields of organic metals and 2D materials
We discuss the recent advances and main approaches towards the design of electrically conductive COFs, highlight some of the challenges in such design and give our views on the future directions of this field.
J. Mater. Chem. C, 2021,9, 10668-10676
https://doi.org/10.1039/D1TC00750E
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.
J. Mater. Chem. C, 2021,9, 16164-16186
https://doi.org/10.1039/D1TC02958D
Lead or no lead? Availability, toxicity, sustainability and environmental impact of lead-free perovskite solar cells
The presence of lead in perovskite solar cells represents for many a cause of concern. However, alternative elements for lead-free perovskites also present several concerns in terms of toxicity, cost and environmental impact so far neglected.
J. Mater. Chem. C, 2021,9, 67-76
https://doi.org/10.1039/D0TC04552G
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.
J. Mater. Chem. C, 2021,9, 16110-16131
https://doi.org/10.1039/D1TC02441H
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Metal–organic framework based systems for CO2 sensing
Monitoring CO2 levels in the atmosphere as well as in work place environments is strictly regulated.
J. Mater. Chem. C, 2021,9, 16132-16142
https://doi.org/10.1039/D1TC02249K
Diketopyrrolopyrrole-based single molecules in photovoltaic technologies
Diketopyrrolopyrroles stand out due to their chemical and optoelectronic properties. Diketopyrrolopyrrole-single molecules applied in organic, dye-sensitized and perovskite solar cells are presented to give clues for future molecular optimizations.
J. Mater. Chem. C, 2021,9, 16078-16109
https://doi.org/10.1039/D1TC01872H
From nature to organic (bio)electronics: a review on melanin-inspired materials
The progress on melanin's physical–chemical properties, synthesis, processing, and applications is discussed based on recent literature.
J. Mater. Chem. C, 2021,9, 14514-14531
https://doi.org/10.1039/D1TC03029A
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.
J. Mater. Chem. C, 2021,9, 12448-12461
https://doi.org/10.1039/D1TC02826J
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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.
J. Mater. Chem. C, 2021,9, 10524-10546
https://doi.org/10.1039/D1TC01406D
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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.
J. Mater. Chem. C, 2021,9, 8099-8128
https://doi.org/10.1039/D1TC02048J
Efficient wide-bandgap copolymer donors with reduced synthesis cost
Two wide-bandgap copolymer donors with reduced synthesis cost offered decent PCEs up to 15.25% in organic solar cells.
J. Mater. Chem. C, 2021,9, 16187-16191
https://doi.org/10.1039/D1TC01746B
Aliovalent-cation-substitution-induced structure transformation: a new path toward high-performance IR nonlinear optical materials
A quaternary IR-NLO thioantimonate, K2Ag3Sb3S7, designed using an aliovalent-cation-substitution-induced (ACSI) strategy based on the centrosymmetric K2Sb4S7 is reported.
J. Mater. Chem. C, 2021,9, 15407-15414
https://doi.org/10.1039/D1TC04498B
Highly sensitive all-polymer photodetectors with ultraviolet-visible to near-infrared photo-detection and their application as an optical switch
All-polymer photomultiplication type photodetectors were built based on PMBBDT:N2200 (100 : 3, w/w) as photoactive layers, which can be applied in optical switch systems without any current pre-amplifier.
J. Mater. Chem. C, 2021,9, 5349-5355
https://doi.org/10.1039/D1TC00939G
Efficient blue thermally activated delayed fluorescent emitters based on a boranaphtho[3,2,1-de]anthracene acceptor
Efficient blue thermally activated delayed fluorescent emitters based on organic boron-acceptor are developed with high external quantum efficiencies and finely tuned CIE coordinates.
J. Mater. Chem. C, 2021,9, 17136-17142
https://doi.org/10.1039/D1TC04699C
Cation exchange on colloidal copper selenide nanosheets: a route to two-dimensional metal selenide nanomaterials
Up to 5 μm large ca. 5 nm thick PbSe, HgSe, SnCuSe, ZnCuSe, and Cu–Zn–Sn–Se nanosheets (NSs) were synthesized via cation exchange starting from CuSe NSs, offering a universal platform for the synthesis of other metal selenide 2D nanomaterials.
J. Mater. Chem. C, 2021,9, 16523-16535
https://doi.org/10.1039/D1TC04815E
Subphthalocyanine-based electron-transport materials for perovskite solar cells
Here, we explore the potential of subphthalocyanines (SubPcs) as ETMs in PSCs, where the perovskite is deposited by either solution processing or thermal evaporation. A maximum PCE of 10.8% was achieved with the champion device.
J. Mater. Chem. C, 2021,9, 16298-16303
https://doi.org/10.1039/D1TC02600C
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Fullerene derivatives with oligoethylene–glycol side chains: an investigation on the origin of their outstanding transport properties
The synergistic use of X-ray scattering and molecular dynamics simulations reveals the structure–property relationships of [60]fullerene derivatives with oligoethylene–glycol side chains.
J. Mater. Chem. C, 2021,9, 16217-16225
https://doi.org/10.1039/D1TC02753K
Supramolecular organic–inorganic domains integrating fullerene-based acceptors with polyoxometalate-bis-pyrene tweezers for organic photovoltaic applications
Polyoxometalate-bis-pyrene receptors for phenyl-C61-butyric acid methyl ester (PCBM) provide an interfacial layer (IFL) material enhancing the open circuit voltage of the organic photovoltaic device of about 34% under applied bias of ±5 V.
J. Mater. Chem. C, 2021,9, 16290-16297
https://doi.org/10.1039/D1TC03148A
Three-state molecular potentiometer based on a non-symmetrically positioned in-backbone linker
We report on the synthesis and single-molecule conductance of a para-oligo(phenylene)ethynylene derivative with a non-symmetric positioned internal anchor group that gives rise to three conduction pathways of well distinctive conductance and length.
J. Mater. Chem. C, 2021,9, 16282-16289
https://doi.org/10.1039/D1TC02223G
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Unexpectedly flexible graphene nanoribbons with a polyacene ladder skeleton
A new aromatic ladder polymer with a polyacene skeleton shows an unexpectedly high flexibility of its double-stranded backbone.
J. Mater. Chem. C, 2021,9, 16208-16216
https://doi.org/10.1039/D1TC02302K
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New thiophene-based conjugated macrocycles for optoelectronic applications
Two thiophene-based macrocycles have been synthesised and their optoelectronics applications have been investigated.
J. Mater. Chem. C, 2021,9, 16257-16271
https://doi.org/10.1039/D1TC02002A
A ternary organic solar cell with 15.6% efficiency containing a new DPP-based acceptor
A new non-fullerene small molecule (MPU6) containing thienylethynylselenophene bridges, has been studied as an acceptor along with PC71BM and TDTBTA as a donor in ternary solution-processed bulk heterojunction polymer solar cells, showing a PCE of 15.60%.
J. Mater. Chem. C, 2021,9, 16272-16281
https://doi.org/10.1039/D1TC02241E
Combined healing and doping of transition metal dichalcogenides through molecular functionalization
Twofold effect of molecular functionalization of defective transition metal dichalcogenides (TMDCs).
J. Mater. Chem. C, 2021,9, 16247-16256
https://doi.org/10.1039/D1TC01329G
Effects of alkyl side chains of double-cable conjugated polymers on the photovoltaic performance of single-component organic solar cells
The effects of alkyl side units in double-cable conjugated polymers on the photovoltaic performance of single-component organic solar cells were systematically studied.
J. Mater. Chem. C, 2021,9, 16240-16246
https://doi.org/10.1039/D1TC01195B
Constitutional isomers of carbazole–benzoyl-pyrimidine-based thermally activated delayed fluorescence emitters for efficient OLEDs
Two pairs of constitutional isomeric TADF dopants (35CzBPym and 25CzBPym; 35tCzBPym and 25tCzBPym) containing benzoyl pyrimidine (BPym) as an acceptor and carbazoles (Czs) as donors were designed for high-efficiency OLEDs.
J. Mater. Chem. C, 2021,9, 15900-15909
https://doi.org/10.1039/D1TC03998A
Epitaxial growth of β-Ga2O3 (−201) thin film on four-fold symmetry CeO2 (001) substrate for heterogeneous integrations
High quality (−201) orientated β-Ga2O3 thin films are obtained on four-fold symmetric cubic phase CeO2 (001) substrates and are fabricated into photodetectors with excellent photoelectrical performance.
J. Mater. Chem. C, 2021,9, 15868-15876
https://doi.org/10.1039/D1TC02852A
High performance non-doped green organic light emitting diodes via delayed fluorescence
Anthracene-based non-doped OLED devices show EQE = 7.2% due to the delayed fluorescence resulting from the triplet-triplet annihilation (TTA). The hyperfluorescence device, in combination with a TADF assistant dopant, provides a high EQE of 17.8%.
J. Mater. Chem. C, 2021,9, 15583-15590
https://doi.org/10.1039/D1TC03849D
Laser-induced atmospheric CuxO formation on copper surface with enhanced electrochemical performance for non-enzymatic glucose sensing
A tuneable laser-induced oxidation technique was demonstrated for the fabrication of binder-free and robust electroactive copper oxide film as a highly sensitive non-enzymatic glucose sensor.
J. Mater. Chem. C, 2021,9, 14997-15010
https://doi.org/10.1039/D1TC01289D
Tuning the aggregation behaviour of BN-coronene diimides with imide substituents and their performance in devices (OLEDs and OFETs)
The lateral CC-π-extension of perylene diimides (PDIs) to coronene diimides (CDIs) leads to undesired effects such as the decrease of the absorption and a hypsochromic shift. This could be overcome by lateral BN-annulation of PDIs to form superior BNCDIs.
J. Mater. Chem. C, 2021,9, 14720-14729
https://doi.org/10.1039/D1TC02991F
Donor–acceptor materials exhibiting deep blue emission and thermally activated delayed fluorescence with tris(triazolo)triazine
Five emitters with the tris(triazolo)triazine acceptor core are reported, with emission from deep blue to green. These emitters show promising thermally activated delayed fluorescence and/or two-photon fluorescence properties.
J. Mater. Chem. C, 2021,9, 14342-14350
https://doi.org/10.1039/D1TC03480D
BN-Substituted coronene diimide donor–acceptor–donor triads: photophysical, (spectro)-electrochemical studies and Lewis behavior
Boron/nitrogen substituted polyaromatic hydrocarbons (PAHs) are unique materials, with similar molecular structures to their carbon/carbon analogs, but different electronic properties.
J. Mater. Chem. C, 2021,9, 13926-13934
https://doi.org/10.1039/D1TC03034E
Revealing the internal heavy chalcogen atom effect on the photophysics of the dibenzo[a,j]phenazine-cored donor–acceptor–donor triad
Donor–acceptor–donor molecules containing heavy chalcogen atoms, which feature multi-color polymorphism, external-stimuli responsive luminochromism, thermally-activated delayed fluorescence, and room-temperature phosphorescence, have been developed.
J. Mater. Chem. C, 2021,9, 13942-13953
https://doi.org/10.1039/D1TC02635F
A do-it-yourself approach to achieving a flexible pressure sensor using daily use materials
In order to solve the shortcomings of the complex manufacturing process and high cost of flexible pressure sensors, a low-cost and eco-friendly flexible pressure sensor is achieved using a simple do-it-yourself (DIY) approach.
J. Mater. Chem. C, 2021,9, 13659-13667
https://doi.org/10.1039/D1TC03102C
Ultrastable, stretchable, highly conductive and transparent hydrogels enabled by salt-percolation for high-performance temperature and strain sensing
Salt-percolated hydrogels show excellent anti-freezing and anti-drying abilities, high conductivity at ultralow temperatures (−78.5 °C), and excellent thermal and strain sensing performance, which can monitor various physiological signals.
J. Mater. Chem. C, 2021,9, 13668-13679
https://doi.org/10.1039/D1TC02506F
Interpenetrating PAA-PEDOT conductive hydrogels for flexible skin sensors
Conductive hydrogels are promising material candidates in artificial skin and muscles, flexible and implantable bioelectronics, and tissue engineering.
J. Mater. Chem. C, 2021,9, 11794-11800
https://doi.org/10.1039/D1TC01578H
The role of fullerene derivatives in perovskite solar cells: electron transporting or electron extraction layers?
The role of fullerenes as interfacial electron extractors and as bulk electron transporters in PSCs was differentially assessed in order to optimize device performances.
J. Mater. Chem. C, 2021,9, 10759-10767
https://doi.org/10.1039/D0TC05903J
Fluoroarene derivative based passivation of perovskite solar cells exhibiting excellent ambient and thermo-stability achieving efficiency >20%
Trap states in perovskite thin films were passivated effectively by pentafluoroaniline (PFA) additive, thereby significantly enhancing the photovoltaic performances as well as the overall device stability.
J. Mater. Chem. C, 2021,9, 10406-10413
https://doi.org/10.1039/D1TC02335G
Greatly enhanced dielectric charge storage capabilities of layered polymer composites incorporated with low loading fractions of ultrathin amorphous iron phosphate nanosheets
Greatly enhanced dielectric charge storage capabilities are achieved in composites via introducing ultra-thin FePO4 nanosheets and designing bilayer structures.
J. Mater. Chem. C, 2021,9, 10414-10424
https://doi.org/10.1039/D1TC01974K
Organic photovoltaics with 300 nm thick ternary active layers exhibiting 15.6% efficiency
High-performance OPVs with relatively thick active layers are essential for large-scale production. A PCE of 15.63% is achieved by the optimized ternary OPVs with 300 nm thick active layers by combining the superiorities of two binary thick-film OPVs.
J. Mater. Chem. C, 2021,9, 9892-9898
https://doi.org/10.1039/D1TC02748D
Regioregular, yet ductile and amorphous indacenodithiophene-based polymers with high-mobility for stretchable plastic transistors
Regioregular yet near-amorphous indacenodithiophene-based polymers exhibit superior deformability as well as high mobility values up to 1.67 cm2 V−1 s−1.
J. Mater. Chem. C, 2021,9, 9670-9682
https://doi.org/10.1039/D1TC01984H
Facile synthesis of multi-resonance ultra-pure-green TADF emitters based on bridged diarylamine derivatives for efficient OLEDs with narrow emission
A series of multi-resonance ultra-pure-green TADF emitters based on bridged diarylamine derivatives is successfully developed for high efficiency and narrow emission OLEDs which exhibit a high EQE over 20% and narrow FWHM of less than 50 nm.
J. Mater. Chem. C, 2021,9, 8308-8313
https://doi.org/10.1039/D1TC01427G
Ni substitution effect on the structure, magnetization, resistivity and permeability of zinc ferrites
Increase in the spontaneous magnetization up to x < 0.5 is a sequence of appearance of the additional magnetic moment of 2 μB of the Ni2+ cations in tetrahedral positions. For x > 0.5, the moment decreases in octahedral positions and the spontaneous magnetization also decreases.
J. Mater. Chem. C, 2021,9, 5425-5436
https://doi.org/10.1039/D0TC05692H
Tuning luminescence from NIR-I to NIR-II in Cr3+-doped olivine phosphors for nondestructive analysis
We report a series of Cr3+-doped olivine phosphors with tunable luminescence from 940 to 1100 nm. They have promising applications in the field of food processing for both qualitative identification and quantitative analysis.
J. Mater. Chem. C, 2021,9, 5469-5477
https://doi.org/10.1039/D1TC00521A
Low-operating temperature ammonia sensor based on Cu2O nanoparticles decorated with p-type MoS2 nanosheets
Cu2O/MoS2 hybrids are used for the low-operating temperature detection of NH3. A sensing response of 872% is achieved for the M-5 sensor, displaying an improvement compared with bare Cu2O (103%). The selectivity is also increased for M-5 sensor.
J. Mater. Chem. C, 2021,9, 4838-4846
https://doi.org/10.1039/D1TC00391G
A TTF–TCNQ complex: an organic charge-transfer system with extraordinary electromagnetic response behavior
Charge-transfer based molecular conductors have attracted great attention in recent years, but have been rarely explored in the field of electromagnetic materials.
J. Mater. Chem. C, 2021,9, 3316-3323
https://doi.org/10.1039/D0TC05230B
Electrical read-out of light-induced spin transition in thin film spin crossover/graphene heterostructures
An opto-electronic switching device made from an evaporated spin crossover thin film over a graphene sensor is presented. The electrical transduction of both temperature and light-induced reversible spin transitions are demonstrated.
J. Mater. Chem. C, 2021,9, 2712-2720
https://doi.org/10.1039/D0TC05202G
Highly thermally conductive liquid metal-based composites with superior thermostability for thermal management
Mechanically strong and thermostable composites are prepared for thermal management based on soft liquid metal and rigid aramid nanofibers.
J. Mater. Chem. C, 2021,9, 2904-2911
https://doi.org/10.1039/D0TC05493C
Predicted septuple-atomic-layer Janus MSiGeN4 (M = Mo and W) monolayers with Rashba spin splitting and high electron carrier mobilities
In this work, Janus monolayers are predicted for a new 2D MA2Z4 family by means of first-principles calculations. The predicted MSiGeN4 (M = Mo and W) monolayers exhibit dynamic, thermodynamic and mechanical stability, and they are indirect band-gap semiconductors.
J. Mater. Chem. C, 2021,9, 2464-2473
https://doi.org/10.1039/D0TC05649A
A dual-emitting mixed-lanthanide MOF with high water-stability for ratiometric fluorescence sensing of Fe3+ and ascorbic acid
A novel Eu0.07Gd0.03-MOF with high water stability, which can serve as ratiometric fluorescence sensor for “color-change-recover” detection of Fe3+ and ascorbic acid in an aqueous environment.
J. Mater. Chem. C, 2021,9, 562-568
https://doi.org/10.1039/D0TC04781C
A highly efficient and thermally stable broadband Cr3+-activated double borate phosphor for near-infrared light-emitting diodes
GdAl3(BO3)4:Cr3+ is used to fabricate a NIR-pc-LED that shows promise for plant lighting and applications in the nondestructive analysis of agricultural products.
J. Mater. Chem. C, 2021,9, 164-172
https://doi.org/10.1039/D0TC04803H
About this collection
This web collection features the top 50 most popular articles published in Journal of Materials Chemistry C in 2021.
Congratulations to all of the authors whose articles have been featured!