Long-lived afterglow emissions, such as room-temperature phosphorescence (RTP) and thermally activated delayed fluorescence (TADF), are beneficial in the fields of displays, bioimaging, data security. However, it is challenging to realize a single material that simultaneously exhibits both RTP TADF properties with their relative strengths varied controlled manner. Herein, new design approach reported control singlet-triplet energy splitting (∆EST ) graphene quantum dots (GQD)/graphene oxide...

Annulated BODIPY chalcogenide (Se, Te) systems were synthesized from their respective bis(o-formylphenyl)dichalcogenide intermediates. The annulated selenide product was confirmed by X-ray diffraction. red-shifted telluride version found to be sensitive and selective for hypochlorite detection, reversible upon treatment with biothiols.

We have developed the Rh-catalyzed selective C-H functionalization of 6-arylpurines, in which purine moiety directs bond activation aryl pendant. While first amination proceeds via N1-chelation assistance, subsequent second takes advantage an intramolecular hydrogen-bonding interaction between initially formed amino group and one nitrogen atom, either N1 or N7, purinyl part. Isolation a rhodacycle intermediate substrate variation studies suggest that is main active site for both while N7...

The demand for wearable strain gauges that can detect dynamic human motions is growing in the area of healthcare technology. However, realization efficient sensing materials effective detection daily life technically challenging due to absence optimally designed electrode. Here, we propose a novel concept overcoming intrinsic limits conventional sensors based on planar electrodes by developing highly periodic and three-dimensional (3D) bicontinuous nanoporous electrodes. We create 3D...

Abstract Graphene quantum dots (GQDs) have attracted great attention as next‐generation luminescent nanomaterials due to the advantages of a low‐cost process, low toxicity, and unique photoluminescence (PL). However, in solid‐state, strong π−π stacking interactions between basal planes GQDs lead aggregation‐caused PL quenching (ACQ), which impedes practical application light‐emitting devices. Here, surface functionalized (F‐GQDs) by polyhedral oligomeric silsesquioxane (POSS), poly(ethylene...

Oleic acid-conjugated chitosan (oleyl-chitosan) is a powerful platform for encapsulating oleic acid-decorated iron oxide nanoparticles (ION), resulting in good magnetic resonance imaging (MRI) probe. Oleyl-chitosan could self-assemble into core−shell structures aqueous solution and provide the effective core compartment loading ION. ION-loaded oleyl-chitosan showed enhanced MRI sensitivity MR scanner. Cy5.5 dye was accessed to conjugate near-infrared (NIR) vivo optical imaging. After...

The first 5-coordinate Ni–CO₂adduct (PP^MeP)Ni(η²-CO₂) reveals a unique different character in structure and reactivity compared with previous 4-coordinate analogues.

Controllable bandgap widening from 1.8 to 2.6 eV is reported oxidized MoS2 sheets that are composed of quilted phases various MoSxOy flakes. The exfoliated flakes have large size (≥100 μm × 100 μm) with average thickness 1.7 nm. Remarkably, fine reversible tuning the achieved by postprocessing sulfurization sheets. As a service our authors and readers, this journal provides supporting information supplied authors. Such materials peer reviewed may be re-organized for online delivery, but not...

Abstract Demands for sustainable production of hydrogen are rapidly increasing because environmental considerations fossil fuel consumption and development cell technologies. Thus, the high‐performance economical catalysts has been extensively investigated. In this study, a nanoporous Mo carbide electrode is prepared using top‐down electrochemical process it applied as an electrocatalyst evolution reaction (HER). Anodic oxidation foil followed by heat treatment in carbon monoxide (CO)...

Graphene aerogel (GA) has shown great promise as reinforcement of polymeric composites with exceptional electrical and mechanical characteristics. Although there been significant progress in controlling the structure GAs, no studies have appeared on enhanced properties GAs by employing high-quality precursor graphene flakes (GFs). However, assembly GFs is particularly challenging due to their highly hydrophobic agglomerative nature aqueous media, few methods available synthesize GFs, most...

MoO3 has potential advantages in price and weight over more widely studied WO3 for electrochromic devices, but it typically suffers from inferior performance. Here, is demonstrated that 2D nanosheets can be formed by intercalation exfoliation of MoS2 to form partially oxidized MoSxOy, followed complete oxidation using a solution-phase nitric acid treatment. These fully retain the nature exfoliated (70% are less than 9 nm thick), allowing easier ionic diffusion through film compared bulk...

Abstract To ensure the safety of a concrete structure, periodic and accurate inspection for damage is necessary. However, there high risk inaccurate diagnosis structure condition because manual method dependent on operator experience subjective judgment. Additionally, in future society, it may become increasingly difficult to maintain high‐quality infrastructure, as number personnel will also decrease with population. For this purpose, demand automated technology increasing. meet these...

MXenes possess the characteristics required for high-performance supercapacitors, such as high metallic conductivity and electrochemical activity, but their full potential remains unrealized owing to tendency self-restack when fabricated into an electrode. Designing MXene interlayer with effective intercalant has, therefore, become important criterion alleviate restacking issue while also synergistically interact further improve its activity. This study reports intercalation of 1D π-d...

Constructing pertinent nanoarchitecture with abundant exposed active sites is a valid strategy for boosting photocatalytic hydrogen generation. However, the controllable approach of an ideal architecture comprising vertically standing transition metal chalcogenides (TMDs) nanosheets on 3D graphene network remains challenging despite potential efficient production. In this study, we fabricated edge-rich structuring photocatalysts involving grown TMDs porous framework (referred to as Gr). 2D...

Abstract Paramagnetic molecules, such as main‐group radicals and transition metal complexes, play crucial roles in catalytic enzymatic reactions organometallic bioinorganic chemistry. Electron paramagnetic resonance (EPR) spectroscopy emerges a powerful tool for probing the intricate electronic geometric structures of these molecules. The application EPR spans wide spectrum chemical entities, from simple to metalloproteins, clusters, emphasizing its versatility across various fields This...

Reactions of nickel complexes supported by an anionic PNP pincer ligand (PNP– = N[2-PiPr2-4-Me-C6H3]2) toward CO2 and CO are investigated, particularly for interrogating their C–O bond formation/cleavage chemistry. The formation a formate species (2) was accomplished the reaction (PNP)NiH with CO2, while structural isomer complex (PNP)NiCOOH-κC (4) successfully produced from corresponding hydroxyl compound exposing it to CO(g). Its structurally unique character gleaned obtaining two...

We report on the dual function of a silica–iron oxide hybrid nanoparticle combined with stimulus responsive gatekeeper surface. Multifunctional nanoparticles (Fe@Si–DOX–CD–PEG) composed an Fe3O4 core, mesoporous silica shell, and GSH-responsive CD gatekeepers are excellent platform for anticancer drug delivery MR imaging. In particular, surface play key role in accommodating molecules pore shell without premature release until cleaved by GSH. confirmed, from vitro study A549 cell line, that...

Reversible transformations are observed between a phosphide-nickel(II) alkoxide and phosphinite-nickel(0) species via P-O bond formation coupled with 2-e(-) redox change at the nickel center. In forward reaction, nickel(0) dinitrogen (PP(OMe)P)Ni(N2) (2) {(PP(OMe)P)Ni}2(μ-N2) (3) were formed from reaction of (PPP)NiCl (1) methoxy anion. backward (PPP)Ni(II) moiety was regenerated CO2 3 concomitant methyl carbonate ligand in (PPP)Ni(OCOOMe) (7). Thus, unanticipated metal-ligand cooperation...

The reaction of a nickel(<sc>i</sc>) carbonyl species with CH₃I revealed the formation (PNP)NiCOCH₃ which differs from its zerovalent congener.

Abstract Solution‐phase exfoliated graphene has always been an attractive material for flexible thermoelectric applications, but traditional oxidative routes suffer from poor flake quality and a lack of doping techniques to make complementary n‐type p‐type films. Here, it is demonstrated that by changing the adsorbed surfactant during intercalation‐exfoliation process (polyvinylpyrrolidone n‐type, pyrenebutyric acid p‐type), both extremely high electrical conductivity (3010 2330 S cm −1 )...