Themed collection 2015 Journal of Materials Chemistry C Hot Papers
Long wavelength AIEgen of quinoline-malononitrile
In this Highlight, we summarize some recent advances in the area of red to near-infrared fluorescent AIE-active organic materials via tailoring the building block of quinoline-malononitrile (QM), and its application in bioimaging.
Taking electrons out of bioelectronics: bioprotonic memories, transistors, and enzyme logic
We highlight our recent efforts in developing devices that control the flow of H+ and OH− in biological polymers.
From commercial tyrosine polymers to a tailored polydopamine platform: concepts, issues and challenges en route to melanin-based bioelectronics
Current issues/challenges in the development of biocompatible eumelanin-based devices ranging from commercial eumelanins through 5,6-dihydroxyindole polymers to mussel-inspired polydopamine are presented.
Methods to pattern liquid metals
This highlight overviews state-of-the-art methods to pattern liquid metals for use in microfluidics and electronic components that are soft, stretchable, and shape reconfigurable.
Stimuli and shape responsive ‘boron-containing’ luminescent organic materials
A review on the recent developments of boron based shape and stimuli sensitive functional luminescent materials is presented.
Crystal organometal halide perovskites with promising optoelectronic applications
Crystal organometal halide perovskites with specific morphologies and unique optoelectronic properties have extended their applications into the whole optoelectronic field.
Adhering magnetic molecules to surfaces
In this review we aim to present an overview of the work that has been performed on attaching and studying Single-Molecule Magnets (SMMs) on various surfaces, with an emphasis on molecular design for surface interaction and on the magnetic properties before and after adhesion occurs.
Sensitizers with rigidified-aromatics as the conjugated spacers for dye-sensitized solar cells
Metal-free dyes with rigidified-aromatic segments as the conjugated spacers for dye-sensitized solar cells are compiled and reviewed.
Electrically responsive photonic crystals: a review
Tunable photonic crystals (TPCs) represent an important class of intelligent materials, which can be used as optically active components and as functional technology to change an object's colour. Here, we review progresses in electrically responsive PCs: a subclass of these smart materials which employs electrical stimulation as direct or indirect trigger for tuning optical properties.
Ultrathin graphene: electrical properties and highly efficient electromagnetic interference shielding
Ultrathin graphene, a 2D material, demonstrates outstanding features and rapid growth for EMI shielding due to its strong absorption towards electromagnetic waves in composites. It is sought after for communication, electronic devices, information security, electromagnetic pollution defense and healthcare.
Nano-bioelectronics via dip-pen nanolithography
This review charts the development of dip-pen nanolithography (DPN) for the fabrication of nanoscale bioelectronic and biomaterial interfaces.
The development of artificial porphyrinoids embedded with functional building blocks
The synthesis and applications of artificial porphyrinoids containing various functional building blocks by replacement of the pyrrole subunit have been summarized.
Precursor strategies for metallic nano- and micropatterns using soft lithography
Soft lithographic methods describe a set of printing methods which are widely used for the preparation of structured surfaces.
Graphene quantum dots: versatile photoluminescence for energy, biomedical, and environmental applications
Graphene quantum dots have large surface area, high photostability, excellent biocompatibility and versatile photoluminescence, promising for various applications.
Integration of aggregation-induced emission and delayed fluorescence into electronic donor–acceptor conjugates
Aggregation-induced emission and delayed fluorescence are observed simultaneously for the luminogens with an electron-donor and acceptor framework.
Modulating the electrical conductivity of metal–organic framework films with intercalated guest π-systems
The formation of guest-mediated π-donor/acceptor stacks within electroactive metal–organic frameworks activates long-range charge mobilization, boosting the electrical conductivity of the doped materials.
Light-triggered generation of multifunctional gas-filled capsules on-demand
This communication describes a novel strategy for the generation of gas-filled capsules embedded with functional species in the membranes on demand.
Brush-controlled oriented growth of TCNQ microwire arrays for field-effect transistors
We demonstrate a solution-based method by a writing brush to realize the controllable fabrication of highly-oriented and large-scale TCNQ microwire arrays, which can be grown on rigid and flexible substrates.
Naphthyl substituted anthracene combining charge transport with light emission
A naphthyl anthracene derivative showed good carrier mobility and high luminescence, indicating the potential applications in multifunctional optoelectronics.
Triazatruxene based covalent organic framework and its quick-response fluorescence-on nature towards electron rich arenes
Two new 2D covalent organic frameworks were synthesized based on a triazatruxene unit, which could be used as potential fluorescent sensors for electron rich/deficient arene vapors.
Multi-scale thermal stability of niobate-based lead-free piezoceramics with large piezoelectricity
Multi-scale thermal stability of (K,Na)NbO3-based perovskites with a high d33 of 430 pC N−1 is investigated, revealing the origin of its large piezoelectricity.
Photomobile materials with interpenetrating polymer networks composed of liquid-crystalline and amorphous polymers
Interpenetrating polymer networks composed of a crosslinked azobenzene liquid-crystalline polymer and poly(alkyl methacrylate)s were developed to enhance the photoresponsive and mechanical properties of photomobile polymer materials.
Femtosecond spin-state photo-switching dynamics in an FeIII spin crossover solid accompanied by coherent structural vibrations
Femtosecond optical spectroscopy reveals coherent structural trapping accompanying spin-state photoswitching in a FeIII spin-crossover material.
Supramolecular control of reverse spin transitions in cobalt(II) terpyridine complexes with diblock copolypeptide amphiphiles
The composites composed of the cobalt terpyridine complex [CoII(MeO-terpy)2]2+ and the diblock copolypeptide amphiphiles (including glutamic acid and leucine) with rectangular morphology and reverse spin transition were prepared.
A Λ-shaped donor–π–acceptor–π–donor molecule with AIEE and CIEE activity and sequential logic gate behaviour
A novel Λ-shaped donor–π–acceptor–π–donor molecule BCPMM with AIEE, CIEE and polymorphism-dependent fluorescence properties was utilized to construct five simple logic gates and more than ten kinds of sequential combinational logic systems.
Lysine and dithiothreitol promoted ultrasensitive optical and colorimetric detection of mercury using anisotropic gold nanoparticles
Lysine and dithiothreitol promoted ultrasensitive optical and colorimetric detection of mercury using anisotropic gold nanoparticles.
Infrared invisibility stickers inspired by cephalopods
The skin morphology of cephalopods endows them with remarkable camouflage capabilities. Herein, we report infrared invisibility stickers inspired by the structures and proteins found in cephalopod skin. These stickers enable arbitrary objects to acquire reconfigurable infrared camouflage patterning. Our work represents an initial step towards wearable biomimetic infrared stealth technologies.
The position effect of an ethynyl spacer on the carrier mobility of anthracene derivatives
The naphthalenyl ethynyl substitution at the 1- and 2-positions of anthracene exhibits totally different film forming ability and hole mobility.
A robust ionic liquid–polymer gate insulator for high-performance flexible thin film transistors
An ionic liquid–polymer (IL–PVP) dielectric layer with robust mechanical strength and flexibility was fabricated by a chemical interaction between the ionic liquid and polymer. This dielectric layer allowed operation of flexible thin film transistors with high performance.
One-pot solvothermal synthesis of biocompatible magnetic nanoparticles mediated by cucurbit[n]urils
A facile one-step procedure for solvothermal synthesis of highly water-dispersible biocompatible magnetic Fe3O4 nanoparticles mediated by cucurbit[n]urils (CB[n]s) was presented.
On-surface assembly of low-dimensional Pb-coordinated metal–organic structures
Porphyrin-based one-dimensional chains, ladders, and two-dimensional networks incorporating the p-block element Pb are assembled on a Au(111) surface.
In situ synthesis of stimulus-responsive luminescent organic materials using a reactive inkjet printing approach
A stimulus (vapour/heat)-responsive fluorescent dye as well as a luminescent conjugated polymer were readily generated using a reactive inkjet printing system.
Temperature-controlled morphology evolution of porphyrin nanostructures at an oil–aqueous interface
The facile fabrication of various porphyrin nanostructures at an oil–aqueous interface is demonstrated. The obtained structures vary depending on assembly temperature, and include tree-, wavy-, honeycomb, ring-, skeleton-, jar-, hollow spherical and flask-like.
Phosphorescence switch and logic gate of iridium(III) complexes containing a triarylboron moiety triggered by fluoride and an electric field
A new concept of phosphorescence switch and logic gate has been proposed based on iridium(III) complexes containing triarylboron moieties.
Highly efficient, little efficiency roll-off orange-red electrophosphorescent devices based on a bipolar iridium complex
A novel bipolar phosphor BZQPG realizes a series of highly efficient orange-red PhOLEDs with the wide-range doping concentrations of 15, 20 and 25 wt%. They exhibit stable CIEx,y (0.57 ± 0.01, 0.41 ± 0.01) and constantly high peak PE and EQE values of >60 lm W−1 and 22%, respectively.
Charge transport in nanoparticular thin films of zinc oxide and aluminum-doped zinc oxide
In this work, we report on the electrical characterization of nanoparticular thin films of zinc oxide and aluminum-doped ZnO. Temperature-dependent current–voltage measurements revealed that charge transport is well described by the Poole–Frenkel model.
High-yield synthesis of gold nanoribbons by using binary surfactants
Gold nanoribbons with high morphological yield and great SERS performance have been successfully prepared by using binary surfactants.
A room-temperature method for coating a ZnS shell on semiconductor quantum dots
A room-temperature method based on phase transfer and reaction between Zn2+ and S2− in toluene for coating a ZnS shell on quantum dots.
The reported anomalous emission intensity of the 5D0 → 7F4 transition of Eu3+ in a molybdate double perovskite
The assigned anomalous upconversion emission intensity of the 5D0 → 7F4 transition of Eu3+ in the double perovskite Sr2Ca(W1−xMox)O6 co-doped with Yb3+ is shown to be due to a transition metal impurity present in the MoO3 starting material.
Electrochromic properties of self-organized multifunctional V2O5–polymer hybrid films
Bio-inspired electrochromic V2O5–polymer hybrid films were prepared following a one-step self-organization procedure based on liquid crystal formation of organic and inorganic components.
Synergistic electrical bistability in a conductive spin crossover heterostructure
A flexible heterostructure is reported herein, which elastically couples the volumetric variation during SCO to the electrical conductivity of a strain-sensitive metallic conductor, thereby resulting in synergistic electrical bistability.
Carbon nanodot–ORMOSIL fluorescent paint and films
Room temperature synthesis of micelle-protected highly fluorescent carbon nanodots (CNDs) and fabrication of scratch-resistant CND–ORMOSIL films and paint.
Soluble polycyclosilane–polysiloxane hybrid material and silicon thin film with optical properties at 193 nm and etch selectivity
Silicon thin films that fulfil the needs of current semiconductor lithography were prepared from a new class of polycyclosilane–polysiloxane hybrid materials.
Effects of side groups on the kinetics of charge carrier recombination in dye molecule-doped multilayer organic light-emitting diodes
Effects of side groups on the kinetics of charge carrier recombination are investigated in dye molecule-doped multilayer organic light-emitting diodes by transient electroluminescence.
Ferroelectricity in Dion–Jacobson ABiNb2O7 (A = Rb, Cs) compounds
Ferroelectricity and piezoelectricity in CsBiNb2O7 are demonstrated for the first time.
Efficient polymer solar cells fabricated from solvent processing additive solution
In this study, high concentration or pure high boiling temperature solvent, chloronaphthalene (CN) was used as solvent for fabrications of efficient PSCs. The effects of high concentrations/purity of CN as solvent on device performances were reported.
Do charges delocalize over multiple molecules in fullerene derivatives?
We address the question of charge delocalization in amorphous and crystalline fullerene solids by performing state of the art calculations encompassing force-field molecular dynamics, microelectrostatic and quantum-chemical methods.
Mechanoresponsive liquid crystals exhibiting reversible luminescent color changes at ambient temperature
Oligothiophene-based liquid crystals having a wide luminescent color variation exhibit reversible luminescent color changes induced by mechanical shearing and subsequent aging at ambient temperature.
A dual responsive “turn-on” fluorophore for orthogonal selective sensing of biological thiols and hydrogen peroxide
A dual responsive probe capable of generating two different responses upon reacting with thiols and H2O2 in a highly selective manner was developed.
Efficient silicon quantum dots light emitting diodes with an inverted device structure
SiQDs with an average diameter of 2.6 ± 0.5 nm are used as the light emitting material in high-efficiency inverted structure light emitting diodes.
RE3Sb3Zn2O14 (RE = La, Pr, Nd, Sm, Eu, Gd): a new family of pyrochlore derivatives with rare earth ions on a 2D Kagome lattice
RE3Sb3Zn2O14 (RE = La, Pr, Nd, Sm, Eu, Gd) is a series of novel pyrochlore-related materials with 2D Kagome lattices formed by RE3+ and Sb5+. The rare earth is the only magnetic ion in the structure; this family is therefore an archetype for exploring magnetic frustration on a 2D Kagome lattice.
Facial synthesis of KCu7S4 nanobelts for nonvolatile memory device applications
A memory device was fabricated based on KCu7S4 nanobelts/Cu Schottky diode which displayed typical resistive switching behavior with a low set voltage of 0.4–1 V, a current ON/OFF ratio of ∼104, and a retention time >104 s.
Effect of intercalation and chromophore arrangement on the linear and nonlinear optical properties of model aminopyridine push–pull molecules
Three push–pull aminopyridine derivatives having D–π–A, D–(π–A)2, and D–(π–A)3 arrangements were examined as model organic chromophores capable of intercalation into inorganic layered materials.
An organic–inorganic hybrid co-crystal complex as a high-performance solid-state nonlinear optical switch
An organic–inorganic hybrid co-crystal complex exhibits an attractive switching nonlinear optical performance with a superior contrast and high repeatability.
Effects of interfacial transition layers on the electrical properties of individual Fe30Co61Cu9/Cu multilayer nanowires
We accurately measure the electrical properties of individual Fe30Co61Cu9/Cu multilayered nanowires using nanomanipulators in in situ SEM to reveal that interfacial transition layers are influential in determining their transport behaviors.
Improved thermal stability and retention properties of Cu–Te based CBRAM by Ge alloying
Ge alloyed Cu–Te thin films showing improved thermal stability and enhanced retention properties when implemented as a cation supply layer in conductive bridge random access memory cells.
Inverted and large flexible organic light-emitting diodes with low operating voltage
Green phosphorescent inverted organic light-emitting diodes (IOLEDs) with 1,4,5,8,9,11-hexaazatriphenylene-hexacarbonitrile (HAT-CN)/aluminium/n-doped 4,7-diphenyl-1,10-phenanthroline (Bphen) used as an electron injection layer (EIL) were demonstrated.
Manifestation of high-temperature ferromagnetism in fluorinated graphitic carbon nitride nanosheets
We demonstrate a novel two-dimensional material, fluorinated graphitic carbon nitride (g-C3N4) nanosheets, with intrinsic ferromagnetism; its Curie temperature can reach as high as 700 K.
Colloidal synthesis of Cu2−xAgxCdSnSe4 nanocrystals: microstructures facilitate high performance thermoelectricity
We have demonstrated Cu2−xAgxCdSnSe4 nanocrystals can result in decreases in the lattice thermal conductivity while increasing the Seebeck coefficient. A ZT up to 0.8 was obtained when x is 0.3.
A brilliant cryogenic magnetic coolant: magnetic and magnetocaloric study of ferromagnetically coupled GdF3
The magnetocaloric effect of an inorganic framework material with repeating GdF3 units has been studied using isothermal magnetization and heat capacity measurements.
Co-titration of AgNO3 and HAuCl4: a new route to the synthesis of Ag@Ag–Au core–frame nanocubes with enhanced plasmonic and catalytic properties
We report a new strategy for the synthesis of Ag@Ag–Au core–frame nanocubes by co-titrating AgNO3 and HAuCl4 concomitantly into an aqueous suspension of Ag nanocubes in the presence of ascorbic acid (AA) and poly(vinyl pyrrolidone) at room temperature.
Equivalent energy-level structures in stacked metamaterials
For stacked metamaterials, meta-atoms act as real atoms in nature materials, whose characteristic frequency bands behave as the equivalent energy levels.
Self-powered flexible pressure sensors with vertically well-aligned piezoelectric nanowire arrays for monitoring vital signs
We propose an in situ poling of vertically well-aligned piezoelectric nanowire arrays with preferential polarization orientation as highly sensitive self-powered sensors for monitoring vital signs.
Incompletely condensed POSS-based spin-on-glass networks for impeccable ultra low-k integration
The integration reliability of mechanically robust, ultra low-k spin-on-glass poly(methyl)silsesquioxanes incorporating incompletely condensed methyl-POSS were examined for next generation microelectronics.
High LUMO energy pyrrolidinofullerenes as promising electron-acceptor materials for organic solar cells
Appropriately designed pyrrolidinofullerenes loaded with electron donor alkoxy groups showed enhanced VOC and power conversion efficiencies in organic solar cells.
Synthesis of novel nonlinear optical chromophores: achieving excellent electro-optic activity by introducing benzene derivative isolation groups into the bridge
Introducing benzene derivative isolation groups into the π-bridge improved the EO coefficient (r33) greatly.
Tunable green to yellowish-orange phosphor Na3LuSi2O7:Eu2+,Mn2+via energy transfer for UV-LEDs
A series of green-yellowish-orange-emitting Eu2+,Mn2+-doped Na3LuSi2O7 (NLSO) phosphors, synthesized via the high-temperature solid state reaction process, have been investigated in detail.
A strategy for enhancing the sensitivity of optical thermometers in β-NaLuF4:Yb3+/Er3+ nanocrystals
A strategy for enhancing the sensitivity of optical thermometers is developed herein by using non-thermally coupled levels of Er3+.
Transparent composites prepared from bacterial cellulose and castor oil based polyurethane as substrates for flexible OLEDs
Flexible and transparent BC/PU composites were prepared, which exhibit excellent transparency (up to 90%) in the visible region and great mechanical properties, with a tensile strength of up to 69 MPa and a Young's modulus of up to 6 GPa.
Controlling Nd-to-Yb energy transfer through a molecular approach
Fully efficient Nd-to-Er energy transfer has been studied at the molecular level in the heterobimetallic NdYb2Q9 light molecular converter.
About this collection
This on-going web collection features all the articles published in Journal of Materials Chemistry C in 2015 marked as HOT, as recommended by referees. Congratulations to all the authors whose articles are featured!