Mass production of high-quality graphene sheets is essential for their practical application in electronics, optoelectronics, composite materials, and energy-storage devices. Here we report a prompt electrochemical exfoliation into aqueous solutions different inorganic salts ((NH4)2SO4, Na2SO4, K2SO4, etc.). Exfoliation these electrolytes leads to with high yield (>85%, ≤3 layers), large lateral size (up 44 μm), low oxidation degree (a C/O ratio 17.2), remarkable hole mobility 310 cm2 V–1...

Solution-processable thin layer graphene is an intriguing nanomaterial with tremendous potential for electronic applications. In this work, we demonstrate that electrochemical exfoliation of graphite furnishes sheets high quality. The electrochemically exfoliated (EG) contains a yield (>80%) one- to three-layer flakes C/O ratio 12.3 and low sheet resistance (4.8 kΩ/□ single EG sheet). Due the solution processability EG, vacuum filtration method in association dry transfer introduced produce...

Organic semiconductors have attracted wide attention in recent decades, resulting the rapid development of organic electronics. For example, solution processibility allows researchers to use unconventional deposition methods (such as inkjet printing and stamping) fabricate large area devices at low cost. The mechanical properties also allow for flexible However, most distinguishing feature is their chemical versatility, which permits incorporation functionalities through molecular design....

A novel solution fabrication of large-area, highly conductive graphene films by spray-coating a hybrid ink exfoliated (EG)/poly(3,4-ethylenedioxythiophene):poly(styrenesulfonate) (PEDOT:PSS) (PH1000) is demonstrated. The fabricated exhibit excellent mechanical properties, thus enabling their application as bottom electrodes in ultrathin organic photodetector devices with performance comparable to that the state-of-the-art Si-based inorganic photodetectors.

Organic field-effect transistors and near-infrared (NIR) organic phototransistors (OPTs) have attracted world's attention in many fields the past decades. In general, sensitivity, distinguishing signal from noise, is key parameter to evaluate performance of NIR OPTs, which decided by responsivity dark current. 2D single crystal films semiconductors (2DCOS) are promising functional materials due their long-range order spite only few molecular layers. Herein, for first time, air-stable 2DCOS...

Three simple, controlled steps are all it takes to synthesize the title pentacene analogue DBTDT (see figure). The material's high ionization potential, thermal and photostability, mobilities, an on/off ratio larger than 106 at a substrate temperature of ca. 36 °C, as reported here, suggest that will be extremely valuable for applications in plastic organic electronics.

Abstract Cocrystals of 4‐styrylpyridine and 1,2,4,5‐tetracyanobenzene were successfully prepared by supramolecular self‐assembly. Donor–acceptor interactions between the molecular components are main driving force for self‐assembly contribute to intermolecular charge transfer. The cocrystals possess two‐photon absorption properties that not observed in individual components; suggesting originates from charge‐transfer donor–acceptor system. origin multichromophore systems remains...

Two-dimensional molecular crystals (2DMCs) are a promising candidate for flexible and large-area electronics. Their production requires both low nuclei density 2D crystal growth mode. As an emerging type of material, their remains case-by-case practice. Here we present general, efficient strategy 2DMCs. The method grows on water surface to minimize the nuclei. By controlling interfacial tension water/solution system with phase transfer surfactant, spreading area solvent increases tens times,...

We describe a fast and versatile method to functionalize high-quality graphene with organic molecules by exploiting the synergistic effect of supramolecular covalent chemistry. With this goal, we designed synthesized comprising long aliphatic chain an aryl diazonium salt. Thanks chain, these physisorb from solution onto CVD or bulk graphite, self-assembling in ordered monolayer. The sample is successively transferred into aqueous electrolyte, block any reorganization desorption An...

Carbon-based films: Dopamine was used as the precursor for facile yet controllable production of a highly stretchable transparent conductive film (see picture). The synthesized is and can reversibly withstand mechanical deformations (such being stretched to 20 % 100 cycles).

The equilibrium crystal shape and evolution of organic crystals are found to follow the Gibbs-Curie-Wulff theorem. Organic grown by physical vapor transport technique exhibit exactly same as predicted theorem under optimal conditions. This accordance provides concrete proof for

Abstract The overproduction of HOCl is highly correlated with diseases such as atherosclerosis, rheumatoid arthritis, and cancer. Whilst acting a marker these diseases, might also be used an activator prodrugs or drug delivery systems for the treatment corresponding disease. In this work, new platform probes has been developed that integrates detection, imaging, therapeutic functions. can detect HOCl, using both NIR emission naked eye in vitro, high sensitivity selectivity at ultralow...

Abstract Memristors proposed by Leon Chua provide a new type of memory device for novel neuromorphic computing applications. However, the approaching distinct multi‐intermediate states tunable switching dynamics, controlling conducting filaments (CFs) toward high repeatability and reproducibility, ability large‐scale preparation devices, remain full challenges. Here, we show that vertical‐organic‐nanocrystal‐arrays (VONAs) could make way The perfect one‐dimensional structure VONAs confine...

Large-area uniform of single-crystal tungsten disulfide (WS2) is important for advanced optoelectronics based on two-dimensional (2D) atomic crystals. However, difficulties in controlling the interrelated growth parameters restrict its development devices. Herein, we present synthesis triangular monolayered WS2 flakes with good uniformity and single crystal by adjusting introduction time sulfur precursor distances between sources substrates to control nucleation density. Investigation...

Abstract Objectives The study aimed to determine whether dental pulp stem cell‐derived exosomes (DPSC‐Exos) exert protective effects against cerebral ischaemia‐reperfusion (I/R) injury and explore its underlying mechanism. Materials Methods Exosomes were isolated from the culture medium of human DPSC. Adult male C57BL/6 mice subjected 2 hours transient middle artery occlusion (tMCAO) followed by reperfusion, after which singular injection DPSC‐Exos via tail vein was administrated. Brain...

Abstract Singlet diradicaloids hold great potential as semiconductors for organic field‐effect transistors (OFETs). However, their relative low material and device stabilities impede the practical applications. Here, to achieve balanced stability performance, two isomeric dibenzoheptazethrene derivatives with singlet diradical character were synthesized in a concise manner. Benefitting from aromatic stabilization, both compounds display small large singlet–triplet gap, corroborated by...

Anomalous negative phototransistors in which the channel current decreases under light illumination hold potential to generate novel and multifunctional optoelectronic applications. Although a variety of design strategies have been developed construct such devices, NPTs still suffer from far lower device performance compared well-developed positive (PPTs). In this work, 1D/2D molecular crystal p-n heterojunction, p-type 1D (1DMC) arrays are embedded into n-type 2D crystals (2DMCs), is...

Organic semiconductors (OSCs) are pivotal for next-generation flexible electronics but limited by an intrinsic trade-off between mobility and stability. We introduce adaptive surface doping (ASD), innovative strategy to overcome this dichotomy in OSCs. ASD's mechanism accommodates a broad range of dopant concentrations, optimally passivating trap states as needed. This approach significantly lowers the energy level from 84 meV 14 above valence band edge, promoting transition hopping...

The self-assembly behaviors and charge transport properties of cruciforms with anthracene as one axis were studied. By changing these cruciforms, the assembly morphologies single crystal micro/nanostructures transferred from dimension to three dimensions. This morphology transformation was controlled by intermolecular interactions which proved X-ray diffraction results presented a facile way synthesize different dimensional through molecular design. Field-effect transistors based on...

Hexagonal micrometer-sized organic single crystals of a fused-ring thienoacene are grown controllably by physical vapor transport over large area. A "two-dimensional organic-ribbon mask" technique is developed to fabricate field-effect transistors based on an individual microcrystal. The accomplished exhibit mobility as high 1.8 cm2V−1s−1 with on/off ratios typically >107.

The synthesis and charge transport property of dicyanomethylene-substituted fused tetrathienoquinoid have been studied. Transistors based on solution casted films exhibited high electron motilities up to 0.9 cm2V−1s−1 in ambient conditions without any post-treatment.

Two-dimensional molecular crystals (2DMCs) open a new door for the controllable growth of 2D materials by design with energy gap and solution processability. However, 2DMCs defined layers remains full challenges. Herein, we report novel method to produce various number layers. When surface tension viscosity are tuned control spreading on liquid surface, large-area quasi-freestanding from bulk size down monolayer limit obtained, which makes it possible probe intrinsic layer-dependent...