Promising Commercial Applications Research Articles

Functional, Chemical, and Phytotoxic Characteristics of Cestrum parqui L'Herit: An Overview.

Cestrum parqui L'Herit. (Solanaceae family) is a species of forest shrub, self-incompatible and specialized in pollination, widespread in the subtropical area of the planet, and now widely distributed also in the Mediterranean area. The constituents of its leaves have antimicrobial, anticancer, insecticidal, antifeedant, molluscicidal, and herbicidal properties. The spread of this species represents a valuable source of compounds with high biological value. Various research groups are engaged in defining the chemical composition of the different parts of the plant and in defining its properties in view of important and promising commercial applications. To date, there are only a few incomplete reports on the potential applications of C. parqui extracts as selective natural pesticides and on their potential phytotoxic role. Scientific knowledge and the use of extraction techniques for these components are essential for commercial applications. This article summarizes the research and recent studies available on the botany, phytochemistry, functional properties, and commercial applications of C. parqui.

TiO2 doping promoted nucleation of CsPbX3 (X = Cl, Br, I) quantum dots in glass with improved luminescent performance and stability

Stability hinders further development of all-inorganic CsPbX3 (X = Cl, Br, I) quantum dots (QDs) although they exhibit promising prospects in optoelectronic applications. Coating perovskite quantum dots (PQDs) with a glass network to form QD glass can significantly improve their stability. However, the dense glass network degrades their luminescent performance. In this work, the crystallization behavior of PQDs in glass and better luminescence properties are prompted by introducing titanium dioxide into borosilicate glass. The luminescence intensity of TiO2-doped CsPbBr3 QD glass is increased by 1.6 times and the PLQY is increased from 49.8 % to 79 % compared to the undoped glass. Evidence proves that the improved properties are attributed to the enhanced nucleation effect of titanium dioxide during the annealing process. Benefiting from the densification of the glass network caused by titanium dioxide doping, the stability of the PQD glass is further improved. LED devices with an ultra-wide color gamut that fully covers the NTSC1953 standard and achieves 128.6 % of the NTSC1953 standard as well as 91.1 % of the Rec.2020 standard were fabricated by coupling PQD glass powder, demonstrating promising commercial applications of PQD glass in optoelectronic displays.

An automated and intelligent microfluidic platform for microalgae detection and monitoring.

Microalgae not only play a vital role in the ecosystem but also hold promising commercial applications. Conventional methods of detecting and monitoring microalgae rely on field sampling followed by transportation to the laboratory for manual analysis, which is both time-consuming and laborious. Although machine learning (ML) algorithms have been introduced for microalgae detection in the laboratory, no integrated platform approach has yet emerged to enable real-time, on-site sampling and analysing. To solve this problem, here, we develop an automated and intelligent microfluidic platform (AIMP) that can offer automated system control, intelligent data analysis, and user interaction, providing an economical and portable solution to alleviate the drawbacks of conventional methods for microalgae detection and monitoring. We demonstrate the feasibility of the AIMP by detecting and classifying four microalgal species (Cosmarium, Closterium, Micrasterias, and Haematococcus Pluvialis) that exhibit varying sizes (from a few to hundreds of microns) and morphologies. The trained microalgae species detection network (MSDN, based on YOLOv5 architecture) achieves a high overall mean average precision at 0.5 intersection-over-union (mAP@0.5) of 92.8%. Furthermore, the versatility of the AIMP is demonstrated by long-term monitoring of astaxanthin production from Haematococcus Pluvialis over a period of 30 days. The AIMP achieved 97.5% accuracy in the detection of Haematococcus Pluvialis and 96.3% in further classification based on astaxanthin accumulation. This study opens up a new path towards microalgae detection and monitoring using portable intelligent devices, providing new ideas to accelerate progress in the ecological studies and commercial exploitation of microalgae.

Impact of probe sonication and sulfuric acid pretreatment on graphene exfoliation in water

Graphene is a 2D material with promising commercial applications due to its physicochemical properties. Producing high-quality graphene economically and at large scales is currently of great interest and demand. Here, the potential of producing high-quality graphene at a large scale via water-phase exfoliation methods is investigated. By altering exfoliation parameters, the production yield of graphene and flake size are evaluated. Pretreatment of the precursor graphite powder using acidic solutions of H2SO4 at different concentrations is found to increase further the yield and structural quality of the exfoliated graphene flakes. These findings are confirmed through various spectroscopy and surface characterization techniques. Controlling flake size, thickness, and yield are demonstrated via optimization of the sonication process, centrifuge time, and H2SO4 pretreatment.

Thermal debonding pressure-sensitive adhesive blended with liquid crystal polymers

With the development of the electronic information industry, semiconductor components and electronic devices are becoming smaller and thinner, which are easy to be damaged during processing and transportation. Pressure-sensitive adhesives (PSA) can temporarily fix and protect these electronic components. As PSA with adjustable peel strength can be easily removed after processing without damaging the electronic components, the research on debonding caused by external stimuli for PSA is a topic of great industrial value. Here, the thermal debonding PSAs have been prepared by incorporating liquid crystal polymers (LCP) into the acrylate PSA matrix. Firstly, the linear LCP (LLCP) blended PSA can lead to some degree of improvement in thermal debonding properties but the serious phase separation between LLCP and PSA matrix results in much lower 180o peel strength at room temperature even than the neat PSA. Secondly, to solve the problem of compatibility, we proposed a new strategy for that semi-IPN LCP PSA system. Through this strategy, the photocurable liquid crystal monomer (LCM) could perform photocuring with PSA matrix and in-situ form semi-IPN. The decreased ratio of the second system with 20 wt% and 50 wt% LCM content could reach 94.3 % and 95.9 % respectively upon heating from 20 °C to 80 °C, both of which are much higher than that of the neat PSA system (85.4 %). What's more, the 180o peel strength of PSA with 20 wt% LCM at room temperature is also 46.7 % higher than that of the neat PSA. Obviously, such an in-situ formed semi-IPN LCP PSA strategy has promising commercial application potential.

Synchronous stabilization of Pb, Zn, Cd, and As in lead smelting slag by industrial solid waste

In order to prevent heavy metal (HM) pollution from lead smelting slag (LSS) to the surrounding environment, this work investigated the feasibility, influencing factors, and mechanisms of using industrial solid waste such as fly ash (FA), oil sludge pyrolysis residue (PR), and steel slag (SS) as remediation amendments. The results demonstrated that the stabilization process was influenced by the material dosage, water content, and LSS particle size. Compared to single materials, the combination amendment PR2FA1 (with a mass ratio of PR to FA as 2:1) exhibited the best stabilization effect, simultaneously reducing the leaching concentrations of As, Zn, Cd, and Pb in LSS to 0.032, 0.034, 0.002, and 0.014 mg/L, respectively. The pH value of the leachate remained between 8 and 9, which met the requirements of surface water quality class IV (GB3838–2002). Through morphological analysis, microscopic characterization, and simulated solution adsorption experiments, it was determined that the stabilization process of HMs was controlled by various mechanisms, including electrostatic attraction, physical adsorption, ion exchange, and chemical precipitation. PR2FA1 had more active components, and its fine-porous structure provided more active sites, resulting in good stabilization performance for As, Zn, Cd, and Pb. Furthermore, cost analysis showed that PR2FA1, as an environmentally friendly material, could generate profits of 157.2 ¥/ton. In conclusion, the prepared PR2FA1 not only addressed the HMs pollution from lead smelting slag to the surrounding environment but also achieved the safe and resourceful disposal of hazardous waste-oil sludge. Its excellent performance in stabilizing HMs and cost-effectiveness suggested promising commercial applications.

Functional Layers of Inverted Flexible Perovskite Solar Cells and Effective Technologies for Device Commercialization

Perovskite solar cells (PSCs) are now one of the most promising solar cells due to advantages such as high‐power conversion efficiency (PCE), low cost, and ease of fabrication. Among PSCs, flexible perovskite solar cells (FPSCs) are lightweight and bendable, making them easier to transport and install than rigid PSCs, and hence can be used in wearable and portable electronics, space energy systems, multifunctional integrated buildings, unmanned systems, and other applications. Compared with regular n–i–p FPSCs, inverted p–i–n FPSCs possess advantages of reliable operational stability, reduced hysteresis effect, low‐temperature fabrication process, and strong potential for tandem devices. At present, the PCEs of single‐junction and tandem‐inverted FPSCs have reached 21.76% and 24.7%, respectively, indicating promising commercial applications. In this review, first, the developments of device functional layers including flexible substrates, flexible conductive electrodes, charge transport layers, and perovskite active layers in inverted FPSCs are elucidated and discussed thoroughly. Then, the technologies for accelerating commercialization of inverted FPSCs are summarized in detail. Finally, perspectives on the development and commercialization of inverted FPSCs are provided.

Effect of radiation sterilisation on the structure and antibacterial properties of antimicrobial peptides.

Antimicrobial peptides (AMPs) have recently been exploited to fabricate anti-infective medical devices due to their biocompatibility and ability to combat multidrug-resistant bacteria. Modern medical devices should be thoroughly sterilised before use to avoid cross-infection and disease transmission, consequently it is essential to evaluate whether AMPs withstand the sterilisation process or not. In this study, the effect of radiation sterilisation on the structure and properties of AMPs was explored. Fourteen AMPs formed from different monomers with different topologies were synthesised by ring-opening polymerisation of N-carboxyanhydrides. The results of solubility testing showed that the star-shaped AMPs changed from water-soluble to water-insoluble after irradiation, while the solubility of linear AMPs remained unchanged. Matrix-assisted laser desorption/ionisation time of flight mass spectrometry showed that the molecular weight of the linear AMPs underwent minimal changes after irradiation. The results of minimum inhibitory concentration assay also illustrated that radiation sterilisation had little effect on the antibacterial properties of the linear AMPs. Therefore, radiation sterilisation may be a feasible method for the sterilisation of AMPs, which have promising commercial applications in medical devices.

Pt-decorated MOF-derived Ni–N–C materials as efficient electrocatalysts for methanol oxidation

High-performance anode electrocatalysts for direct methanol fuel cells (DMFCs) have drawn great attention due to their promising commercial applications.

Chemical composition of the dietary supplement Coccinia grandis (L.) Voigt, and its effect on antioxidant status and inflammatory markers in patients with type 2 diabetes mellitus

Herbal dietary supplements are widely used throughout the world with reports of their use among patients with type 2 diabetes mellitus (T2DM). The present work aimed to provide a comprehensive depiction of the dietary supplement Coccinia grandis (L.) Voigt (in the form of aqueous extract of freeze-dried powder), and to determine its antioxidant and anti-inflammatory effects in patients with T2DM. The antioxidant and anti-inflammatory effects of the dietary supplement were evaluated through a three-month long, randomised, double-blind, placebo-controlled clinical trial involving 158 newly diagnosed patients with T2DM. The dietary supplement consisted of phytoconstituents including loliolide, neophytadiene, palmitic acid methyl ester, among others. The absence of microorganisms was observed for a month at 40°C. In vitro antidiabetic assays revealed the inhibition of α-amylase, α-glucosidase, and dipeptidyl peptidase-IV enzymes, and also the enhancement of glucose uptake in cells. Administration of C. grandis dietary supplement (500 mg/day) for three months was able to change variables from the baseline to the end of the intervention, in the test and placebo groups, as -3.25 ± 3.93 and 1.42 ± 4.84 U/L for glutathione reductase (p < 0.001), 12.75 ± 33.35 and -1.45 ± 41.93 nmol/dL for malonaldehyde (p = 0.025), and 5.89 ± 11.49 and 0.46 ± 13.11 pg/mL for interleukin-6 (p = 0.002), respectively. The standardised dietary supplement showed antidiabetic activity in vitro. The clinical study revealed its promising commercial application as a dietary supplement, by improving antioxidant status and reducing inflammation in newly diagnosed patients with T2DM.

Pivotal Routes for Maximizing Semitransparent Perovskite Solar Cell Performance: Photon Propagation Management and Carrier Kinetics Regulation.

Semitransparent perovskite solar cells (ST-PSCs) are ideal candidates for building-integrated photovoltaics (BIPV) and tandem solar cells (TSCs) owing to their tunable bandgap and high visible transparency. The best power conversion efficiency (PCE) of ST-PSCs is close to 15% with an average visible transmittance of over 20%, which still lags far behind the PCE of normal opaque PSCs. This can be attributed to the poor light utilization efficiency (LUE) of ST-PSCs. Herein, the pivotal routes for maximizing LUE of ST-PSCs in terms of photon propagation management and carrier kinetics regulation are systematically rationalized. First, the fundamental theoretical analyses on optical processes and electronic properties are provided. Then, insights on photon propagation management measures and carrier kinetics regulation strategies are provided. Furthermore, a summary of the promising commercial application of ST-PSCs in BIPV and TSCs is provided. Finally, the main progress of ST-PSCs is briefly summarized, and the directions for the commercialization of ST-PSCs are proposed.

High-temperature resistance of flexible transparent conductive films based on Ag@SnO2 core-shell nanowires for 300 °C

• Ag NWs are encapsulated uniformly in thin SnO 2 shells via solution grown method. • FTCF possess high transmittance of 85.3% and low sheet resistance of 9.3 Ω/sq. • EDS mapping results show that SnO 2 shell is formed on surface of Ag NW. • FTCFs are robust and able to withstand high temperature of 300 ℃. High-temperature resistance of flexible transparent conductive film (FTCF), consisting of an Ag@SnO 2 core−shell nanowire (Ag NW@SnO 2 ) network embedded in a colorless polyimide (cPI), is fabricated by all-solution-process. The Ag NW@SnO 2 are synthesized via a redox reaction in the presence of water. The energy-dispersive X-ray spectroscopy mapping results demonstrate that a SnO 2 thin-shell is coated uniformly on the surface of Ag NW. The obtained FTCF shows low sheet resistance of 9.3 Ω/sq. with ∼85.3% of optical transmittance. Imbedding the Ag NW@SnO 2 network into cPI film enhances the thermostability and improves the mechanical flexibility of the FTCF. Particularly, the FTCFs can withstand a high temperature of 300 ℃ in air without deterioration of conductivity. The robust high-temperature FTCFs in this study hold promising commercial application in flexible and high temperature occasions.

Optimization of Holographic Imprinting Process for Metallic Glass using Thermoplastic Forming

The thermoplastic forming (TPF) process of metallic glass (MG) is a unique and powerful method that cannot be performed using conventional crystalline alloys. Because the mechanical and thermal properties of MGs are more favorable with smaller sample sizes, TPF is particularly useful for microscale and nanoscale part molding and micro-patterning. One of the promising commercial MG applications that can take full advantage of these characteristics is hologram patterning. Holograms can be used to identify unique brands, using characteristics with patterns that are difficult to replicate. Their excellent aesthetic qualities can also greatly contribute to increased product value. In this study, we developed and performed a TPF process for actual holographic imprinting with Mg-based MGs, and further investigated the TPF processing window, covering a wide range of temperature and process time conditions through thermal analysis, with ultra-fast heating rates ranging from 100 to 25000 K/s using Flash-DSC. The results of this study serve as a practical guide for identifying the full range of TPF processing windows including conventional and ultrafast heating conditions for micro-scale and nanoscale molding of various MGs. Moreover, a methodology is proposed to identify the general TPF processing window (<i>η</i><108Pa· s) and the ideal TPF processing window (<i>η</i><104Pa· s) by estimating the viscosity (<i>η</i>) of the supercooled liquid. Accordingly, this study is expected to be utilized to optimize the TPF process of MGs and promote the commercialization of related industries.

Antifungal activity of “HO21-F”, a formulation based on Olea europaea plant extract, in honey bees infected with Nosema ceranae

Nosema ceranae is a microsporidium parasite that silently affects honey bees, causing a disease called nosemosis. This parasite produces resistant spores and germinates in the midgut of honey bees, extrudes a polar tubule that injects an infective sporoplasm in the host cell epithelium, proliferates, and produces intestinal disorders that shorten honey bee lifespan. The rapid extension of this disease has been reported to be widespread among adult bees, and treatments are less effective and counterproductive weakening colonies. This work aimed to evaluate the antifungal activity of a prototype formulation based on a non-toxic plant extract (HO21-F) against N. ceranae. In laboratory, honey bees were infected artificially, kept in cages for 17 days and samples were taken at 7 and 14 days post infection (dpi). At the same time, in field conditions we evaluated the therapeutic effect of HO21-F for 28 days in naturally infected colonies. The effectiveness of the treatment has been demonstrated by a reduction of 83.6 % of the infection levels observed in laboratory conditions at concentrations of 0.5 and 1 g/L without affecting the survival rate. Besides, in-field conditions we reported a reduction of 88 % of the infection level at a concentration of 2.5 g/L, obtaining better antifungal effectiveness in comparison to other commercially available treatments.As a result, we observed that the use of HO21-F led to an increase in population size and honey production, both parameters associated with colony strength. The reported antifungal activity of HO21-F against N. ceranae, with a significant control of spore proliferation in worker bees, suggests the promising commercial application use of this product against nosemosis, and it will encourage new research studies to understand the mechanism of action, whether related to the spore-inhibition effect and/or a stimulating effect in natural response of colonies to counteract the disease.

Highly Efficient Red Quantum Dot Light-Emitting Diodes by Balancing Charge Injection and Transport.

Quantum dot light-emitting diodes (QLEDs) have promising commercial value and application prospects in the fields of displays and lighting. However, a charge-transfer imbalance always exists in the devices. In this work, the high-efficiency red QLEDs were obtained via employing the mixtures of poly[(9,9-dioctylfluorenyl-2,7-diyl)-alt-(4,4'-(N-(4-butylphenyl) (TFB) and 4,4'-bis(carbazole-9-yl)-1,1'-biphenyl (CBP) as hole-transport layers (HTLs) by solution processing. The optimized mixing concentration of CBP is 20 wt %. The corresponding red QLED exhibited a maximum luminance of 963 433 cd m-2, a maximum current efficiency of 38.7 cd A-1, an external quantum efficiency of 30.0%, a central wavelength of 628 nm with a narrow full width at half-maximum (fwhm) of 24 nm, and a 5-fold T50 lifetime enhancement at an extremely high luminance of 200 000 cd m-2. The characteristics of carrier-only devices with QD emissive layers (QD EMLs) and impedance characteristics of QLEDs demonstrate that these advances are chiefly ascribed to the more balanced charge transport and efficient hole-electron recombination in EML. We anticipate that our results could offer a low-cost and simple solution-processed method for preparing high-performance QLEDs.

Integrating high ionic conductive PDOL solid/gel composite electrolyte for enhancement of interface combination and lithium dentrite inhibition of solid-state lithium battery

High interface impedance, slow ion transmission, and easy growth of lithium dendrites in solid-state lithium battery are main obstacles to its development and application. Good interface combination and compatibility between electrolyte and electrodes is an important way to solve these problems. In this work, we successfully combined a high ionic conductive polymerized 1,3-dioxolane (PDOL) solid-state electrolyte and a PDOL gel-state electrolyte to form a rigid-flexible composite structural electrolyte and realized the gelation modification of solid electrolyte/electrode interface. This “PDOL SE + PDOL Gel” composite structure not only improves the electrode/electrolyte interfacial contact, reduces the interfacial impedance, but also inhibits the growth of lithium dendrites in the interface between lithium anode and electrolyte by forming an uniform Li-Zr-O and LiF composite protection layer. This composite electrolyte has high ionic conductivity of 5.96 × 10−4 S/cm and wide electrochemical stability window of 5.0 V. The Li/PDOL SE + PDOL Gel/Li cells can be cycled stably for nearly 400 h at a current density of 1.0 mA/cm2. The assembled LiCoO2/PDOL SE + PDOL Gel/Li cells can be cycled for 250 cycles at 0.5 C with a capacity retention of 80%. This PDOL solid/gel composite electrolyte shows high promising commercial application prospect due to its high security performance, excellent interfacial properties and dendrite inhibition ability.

Sandwich-structure PI/SPEEK/PI proton exchange membrane developed for achieving the high durability on excellent proton conductivity and stability

The proton exchange membrane (PEM) is the core unit in fuel cells, in which the balance among proton conductivity, dimensional stability and durability is a long-term pursuit. Nanofiber composite membrane as the most facile and practical strategy, however, commonly suffers from the obviously reduced proton conductivity although the dimensional stability and durability can be improved distinctly. Herein this work, we proposed a sandwich-structure nanofiber composite PEM, in which the inexpensive proton-transport matrix of sulfonated poly (ether ether ketone) (SPEEK) is sandwiched between polyimide (PI) nanofibers mats via simple steps. Thanks to the support for the matrix and resistance to the tough working condition provided by the PI nanofiber mats, significantly improved stability and durability in contrast to the referenced PEM of SPEEK. More importantly, with respect to the proton conductivity, a numerically equivalent initial proton conductivity and significantly improved proton conductivity stability, in comparing to the SPEEK membrane, has been achieved; where the conductivity only decreased by 21% in our sandwich-structure PEM after 6 weeks, much less than that of commercial Nafion 117 of 30% and pure SPEEK of 55%. Such results can be attributed to the hydrogen bond interaction between PI nanofibers and SPEEK matrix and thus the formation of the sulfonic acid-rich layer in our developed PI/SPEEK/PI membrane, confirmed by in situ Fourier Transform Infrared Spectroscopy (FTIR), X-ray photoelectron spectroscopy (XPS) and transmission electron microscope (TEM). This combination of high proton conductivity, long-term stability, low cost, simple preparation suggests the sandwich-like PEM will provide a promising commercial application for future PEMs. • The sandwich structure PI/SPEEK/PI nanofiber composite membrane was proposed. • The proton conductivity of PI/SPEEK/PI membrane with high durability was achieved. • The interaction between PI nanofiber and SPEEK matrix was confirmed by in-suit FTIR, XPS and TEM.

Characterization of polysaccharides from cystocarpic and tetrasporic stages of Sub-Antarctic Iridaea cordata

The polysaccharide systems from cystocarpic and tetrasporic phases of the Sub-Antarctic algae Iridaea cordata were studied. Cystocarpic plant polysaccharides are mainly composed by carrageenans of the κ–family. However, agaran structures were also detected in the fraction soluble in 2.00 M KCl, after fractionation with increasing potassium chloride solutions. The presence of β-d-galactose-α-l-galactose 3-sulfate, β-d-galactose-α-l-galactose 6-sufate, β-d-galactose 6-sulfate-α-l-galactose 6-sufate, and of β-d-galactose 4-sulfate-α-l-galactose 2,3-disulfate diads was confirmed by means of methylation and NMR spectroscopy analyses; the latter diad has been scarcely reported. The first extracts from tetrasporic plants rendered a pure λ-carrageenan with considerable yield, which confers this species promising commercial applications. In some cystocarpic and tetrasporic extracts α-glucose was also found and assigned to floridean starch by 1H-13C HSQC NMR spectroscopy.

Introduction of Pt-free counter electrode based on f-MWCNTs@NiMoSe2 nanocomposite for efficient dye-sensitized solar cells

Herein, we have demonstrated the synthesis of carboxylic functionalized multi-walled carbon nanotubes (f-MWCNTs) encapsulated Ni-doped Molybdenum diselenide 2D nanosheets (f-MWCNTs@NiMoSe2) by cost-effective hydrothermal technique and served as a potential catalytic material in the dye-sensitized solar cells (DSSCs). The surface morphology and chemical information of the catalyst have been studied through the field emission scanning electron microscopy (FESEM), energy-dispersive X-ray spectroscopy (EDX), transmission electron microscopy (TEM), and X-ray diffraction (XRD) techniques. Taking the electrochemical characterizations including cyclic voltammetry (CV), electrochemical impedance spectroscopy (EIS), Tafel, and power conversion efficiency (PCE) measurements exhibited that f-MWCNTs@NiMoSe2 delivered a better electrocatalytic behavior and outstanding chemical stability. The DSSCs fabricated with f-MWCNTs@NiMoSe2 revealed the most impressive catalytic activity with remarkable PCE of 7.39% versus Pt-based standard electrode (PCE: 6.10%). These results indicate that the substitution of Ni and presence of MWCNTs significantly enrich the active sites and electrical conductivity of MoSe2. Finally, the f-MWCNTs@NiMoSe2 gives a new opportunity for promising commercial application in DSSCs.

Molecular engineering of “A-D-D-A” dual-emitting-cores emitters with thermally activated delayed fluorescence and aggregation-induced emission characteristics

Endowing thermally activated delayed fluorescence (TADF) emitter with aggregation-induced emission (AIE) peculiarity is of great significance for realizing more promising commercial applications. Herein, two new dual-emitting-cores emitters with a structure of acceptor-donor-donor-acceptor (A-D-D-A), namely 2DBT-BZ-2Cz and 2DFT-BZ-2Cz, were designed and synthesized to explore their luminescence trait. The emitters, adopting dual carbazole as donor segments and dual phenyl ketone in peripheral skeleton as electron acceptor units, were featured with small singlet (S 1 )–triplet (T 1 ) splitting energy (ΔE ST ) of 0.02 eV and 0.01 eV. The efficient thermally activated delayed fluorescence (TADF) characteristics and aggregation-induced emission property make them suitable for nondoped OLED devices. The solution-processed green OLEDs based on 2DBT-BZ-2Cz demonstrated greater device performance with current efficiency of 20.7 cd A −1 and maximum luminescence of 10,000 cd m −2 . This work thus provides the direction to explore luminogens of dual-emitting-cores with TADF and AIE features as promising candidates in solid state lighting. Two novel AIE-active TADF materials with dual-emitting cores, namely 2DBT-BZ-2Cz and 2DFT-BZ-2Cz, were designed and synthesized, in which efficient separation of frontier molecular orbital (FMO) and highly twisted molecular structure induced similarly small ΔE ST , obvious TADF characteristic and AIE feature. • Two TADF emitters with dual emitting cores are constructed with the similar molecular configuration of A-D-D-A. • Efficient separation of frontier molecular orbital induced similarly narrow ΔE ST and distinct TADF characteristic. • Highly twisted molecular structure of the dual emitting cores restricted the π-π packing and abduct AIE feature.