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  • Royal Society of Chemistry (RSC)  (31)
  • 2020-2024  (31)
  • 2023  (31)
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  • Royal Society of Chemistry (RSC)  (31)
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  • 2020-2024  (31)
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  • 2023  (31)
  • 1
    Online Resource
    Online Resource
    Controllable digital and analog resistive switching behavior of 2D layered WSe 2 nanosheets for neuromorphic computing
    Royal Society of Chemistry (RSC) ; 2023
    In:  Nanoscale Vol. 15, No. 10 ( 2023), p. 4801-4808
    Details
    In: Nanoscale, Royal Society of Chemistry (RSC), Vol. 15, No. 10 ( 2023), p. 4801-4808
    Abstract: Memristors with controllable resistive switching (RS) behavior have been considered as promising candidates for synaptic devices in next-generation neuromorphic computing. In this work, two-terminal memristors with controllable digital and analog RS behavior are fabricated based on two-dimensional (2D) WSe 2 nanosheets. Under a relatively high operating voltage of 4 V, the memristor demonstrates stable and reliable non-volatile bipolar digital RS with a high switching ratio of 6.3 × 10 4 . On the other hand, under a relatively low operation voltage, the memristor exhibits analog RS with a series of tunable resistance states. The fabricated memristors can work as an artificial synapse with fundamental synaptic functions, such as long-term potentiation (LTP) and depression (LTD) as well as paired-pulse facilitation (PPF). More importantly, the memristor demonstrates high conductance modulation linearity with the calculated nonlinear parameter for conductance as −0.82 in the LTP process, which is beneficial to improving the accuracy of neuromorphic computing. Furthermore, the neuromorphic computing of file types and image recognition can be emulated based on a constructed three-layer artificial neural network (ANN) with a recognition accuracy that can reach up to 95.9% for small digits. In addition, memristors can be used to emulate the learning-forgetting experience of the human brain. Consequently, the memristor based on 2D WSe 2 nanosheets not only exhibits controllable RS behavior but also simulates synaptic functions and is expected to be a potential candidate for future neuromorphic computing applications.
    Type of Medium: Online Resource
    ISSN: 2040-3364 , 2040-3372
    URL: Article
    DOI: 10.1039/D2NR06580K
    Language: English
    Publisher: Royal Society of Chemistry (RSC)
    Publication Date: 2023
    detail.hit.zdb_id: 2515664-0
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  • 2
    Online Resource
    Online Resource
    Controllable modulation of the oxygen vacancy-induced adjustment of memristive behavior for direct differential operation with transistor-free memristor
    Royal Society of Chemistry (RSC) ; 2023
    In:  Nanoscale Vol. 15, No. 34 ( 2023), p. 14257-14265
    Details
    In: Nanoscale, Royal Society of Chemistry (RSC), Vol. 15, No. 34 ( 2023), p. 14257-14265
    Abstract: To achieve the goal of neuromorphic computing hardware implementation with extremely high efficiency, low power consumption, and high density, it is necessary to develop transistor-free memristors and implement differential operation without subtraction circuits. In this study, argon ion irradiation was used during the fabrication process of a single crystalline LiNbO 3 (LN) thin film to controllably introduce oxygen vacancies (OVs) into the bottom surface, which realized the modulation of OVs based on the excellent environment provided by a single-crystalline thin film. The memristive behavior of memristors was then modulated by regulating the distribution of OVs, and the effect of OVs distributed near the bottom surface of the single crystalline LN thin film on the memristive behavior was analyzed. In this way, two transistor-free memristors with opposite memristive behavior directions were fabricated. Two transistor-free memristors exhibit excellent synaptic plasticity and reliable multilevel resistance states. Based on two transistor-free memristors, a novel differential pair was constructed. Hardware implementations of direct differential operation without subtraction circuits were achieved. This study provides a new pathway to develop a transistor-free memristor and achieve differential operation without subtraction circuits in neuromorphic computing, which will simplify the peripheral circuits, improve integration density, and reduce power consumption and latency.
    Type of Medium: Online Resource
    ISSN: 2040-3364 , 2040-3372
    URL: Article
    DOI: 10.1039/D3NR02395H
    Language: English
    Publisher: Royal Society of Chemistry (RSC)
    Publication Date: 2023
    detail.hit.zdb_id: 2515664-0
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  • 3
    Online Resource
    Online Resource
    A robust fully bio-based aromatic–aliphatic ketone epoxide monomer for high-performance epoxy resin containing an imine structural moiety
    Royal Society of Chemistry (RSC) ; 2023
    In:  Polymer Chemistry Vol. 14, No. 34 ( 2023), p. 3978-3988
    Details
    In: Polymer Chemistry, Royal Society of Chemistry (RSC), Vol. 14, No. 34 ( 2023), p. 3978-3988
    Abstract: A fully bio-based aromatic–aliphatic epoxy monomer (VLE) with an α,β-unsaturated ketone structure was synthesized and cured with 4,4′-diaminodiphenylmethane (DDM) to obtain a series of robust high-performance epoxy resins containing an imine structural moiety. Vanillin and levulinic acid were employed to synthesize VLE via aldol condensation and O -glycidylation. The model reaction of VLE and aniline revealed that the epoxide and the ketone group underwent ring-opening and Schiff base reaction, respectively. The curing kinetics of VLE and DDM was investigated by non-isothermal DSC and analyzed by the Kissinger and Ozawa method. DMA, DSC, TGA, and tensile strength tests were employed to investigate the thermal and mechanical properties of the obtained epoxy resins. The formed imine structure between the ketone group and DDM resulted in a VLE-based epoxy resin with superior thermal and mechanical properties to a bisphenol A based epoxy resin. This study provides a strategy and insights for the design and synthesis of sustainable epoxide monomers for high-performance epoxy resins.
    Type of Medium: Online Resource
    ISSN: 1759-9954 , 1759-9962
    URL: Article
    DOI: 10.1039/D3PY00611E
    Language: English
    Publisher: Royal Society of Chemistry (RSC)
    Publication Date: 2023
    detail.hit.zdb_id: 2528812-X
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  • 4
    Online Resource
    Online Resource
    A “tug-of-war” effect tunes Li-ion transport and enhances the rate capability of lithium metal batteries
    Royal Society of Chemistry (RSC) ; 2023
    In:  Chemical Science Vol. 14, No. 10 ( 2023), p. 2745-2754
    Details
    In: Chemical Science, Royal Society of Chemistry (RSC), Vol. 14, No. 10 ( 2023), p. 2745-2754
    Abstract: “Solvent-in-salt” electrolytes (high-concentration electrolytes (HCEs)) and diluted high-concentration electrolytes (DHCEs) show great promise for reviving secondary lithium metal batteries (LMBs). However, the inherently sluggish Li + transport of such electrolytes limits the high-rate capability of LMBs for practical conditions. Here, we discovered a “tug-of-war” effect in a multilayer solvation sheath that promoted the rate capability of LMBs; the pulling force of solvent–nonsolvent interactions competed with the compressive force of Li + -nonsolvent interactions. By elaborately manipulating the pulling and compressive effects, the interaction between Li + and the solvent was weakened, leading to a loosened solvation sheath. Thereby, the developed electrolytes enabled a high Li + transference number (0.65) and a Li (50 μm)‖NCM712 (4 mA h cm −2 ) full cell exhibited long-term cycling stability (160 cycles; 80% capacity retention) at a high rate of 0.33C (1.32 mA cm −2 ). Notably, Li (50 μm)‖LiFePO 4 (LFP; 17.4 mg cm −2 ) cells with a designed electrolyte reached a capacity retention of 80% after 1450 cycles at a rate of 0.66C. An 6 Ah Li‖LFP pouch cell (over 250 W h kg −1 ) showed excellent cycling stability (130 cycles, 96% capacity retention) under practical conditions. This design concept for an electrolyte provides a promising path to build high-energy-density and high-rate LMBs.
    Type of Medium: Online Resource
    ISSN: 2041-6520 , 2041-6539
    URL: Article
    DOI: 10.1039/D2SC06620C
    Language: English
    Publisher: Royal Society of Chemistry (RSC)
    Publication Date: 2023
    detail.hit.zdb_id: 2559110-1
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  • 5
    Online Resource
    Online Resource
    Triallyl Isocyanurate Enabled SPAN-based Organosulfur Featuring High Sulfur & Selenium Loading for Advanced Li/Na-S Batteries
    Royal Society of Chemistry (RSC) ; 2023
    In:  Journal of Materials Chemistry A
    Details
    In: Journal of Materials Chemistry A, Royal Society of Chemistry (RSC)
    Abstract: Sulfurized polyacrylonitrile (SPAN), featuring uniform dispersion of short-chain sulfur in organic skeleton, shows great promise in lithium-sulfur (Li-S) batteries since the inhibited polysulfide dissolution and hence improved electrochemical performance. However, the practical property of SPAN is significantly limited by its relatively poor ionic and electronic conductivity, as well as sulfur content ( 〈 50%). Herein, Triallyl Isocyanurate (TI) is incorporated to fabricate SPAN fiber with robust chemical structure and high sulfur loading. The fine-tuned organosulfur cathode (Se0.05S0.95PAN-TI11, 1F) demonstrates hoisted S & Se content of 54.2% and excellent electrochemical performance in Li/Na-S batteries. As a result, 1F exhibits an ultrahigh composite capacity of 671 mAh g−1 at 0.1C (capacity retention up to 100%) and remarkable rate capability of 405 mAh g−1 at 8C in Li-S batteries. Additionally, 1F shows prolonged cycle ability over 300 cycles at 0.5C when applied in RT-S battery. Notably, under harsh conditions (loading of 10.0 mg cm−2 and E/S= 5µL/mg), Li-1F battery displays a brilliant initial areal capacity of 8.0 mAh cm−2 at 0.1C (reversible capacity of 6.3 mAh cm−2) and retains capacity of 5.3 mAh cm−2 at the 200th cycle (capacity retention of 84%). Consequently, 1F is promising for practical applications in high-performance Metal-S batteries.
    Type of Medium: Online Resource
    ISSN: 2050-7488 , 2050-7496
    URL: Article
    DOI: 10.1039/D3TA04860H
    Language: English
    Publisher: Royal Society of Chemistry (RSC)
    Publication Date: 2023
    detail.hit.zdb_id: 2702232-8
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  • 6
    Online Resource
    Online Resource
    NiCo LDH nanozymes with selective antibacterial activity against Gram-negative bacteria for wound healing
    Royal Society of Chemistry (RSC) ; 2023
    In:  Journal of Materials Chemistry B Vol. 11, No. 32 ( 2023), p. 7675-7683
    Details
    In: Journal of Materials Chemistry B, Royal Society of Chemistry (RSC), Vol. 11, No. 32 ( 2023), p. 7675-7683
    Abstract: Bacterial infections have been a major threat to human health. Especially, Gram-negative (G − ) bacterial infections have been an increasing problem worldwide. The overuse of antibiotics leads to an emergence of drug resistance, and thus the development of novel antimicrobial agents is important, particularly against G − bacteria. Nanozymes use reactive oxygen species (ROS) to kill bacteria, reducing the risk of bacterial resistance and providing new opportunities to meet the challenges of strain selectivity. Here, we synthesized NiCo layered double hydroxide (LDH) nanozymes, which exhibit selective antibacterial activity based on their peroxide-like (POD-like) activity. To obtain the highest antibacterial activity, the POD-like activity of NiCo LDH nanozyme was further optimized by tuning the ratio of nickel and cobalt, and Ni 4 Co 6 LDHs showed the highest POD activity and antibacterial activity. More importantly, Ni 4 Co 6 LDHs can achieve selective sterilization of G − bacteria due to their electrostatic adsorption and hydrophilic interactions with the bacterial cell wall. Animal experiments further indicated that the healing of G − bacteria-infected wounds was effectively promoted without damaging their normal biological tissues. In conclusion, we provide a selective antibacterial agent through a simple strategy, which provides a new direction for the application of nanozymes.
    Type of Medium: Online Resource
    ISSN: 2050-750X , 2050-7518
    URL: Article
    DOI: 10.1039/D3TB00957B
    Language: English
    Publisher: Royal Society of Chemistry (RSC)
    Publication Date: 2023
    detail.hit.zdb_id: 2702241-9
    detail.hit.zdb_id: 2705149-3
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  • 7
    Online Resource
    Online Resource
    In situ post-synthesis of luminescent Lewis acid–base adducts
    Royal Society of Chemistry (RSC) ; 2023
    In:  Chemical Communications Vol. 59, No. 34 ( 2023), p. 5030-5038
    Details
    In: Chemical Communications, Royal Society of Chemistry (RSC), Vol. 59, No. 34 ( 2023), p. 5030-5038
    Abstract: Inkjet printing has drawn widespread attention and is considered as one of the most promising technologies for mass manufacturing of optoelectronic devices. Herein, we elaborate a novel strategy to modulate the morphologies of inkjet-printed thin films by optimizing the ink formulation and suppressing the coffee-ring effect, combining the approach of in situ post-synthesis based on Lewis acid–base interactions. Luminescent Lewis acid–base adducts are created immediately during inkjet printing, i.e. , in situ post-synthesis based on coordination chemistry. The electron-deficient aryl borane was employed as Lewis acid to trigger the coordination interaction with a Lewis base of a nitrogen-containing fluorescent material, which resulted in the rearrangement of the frontier molecular orbitals. Most likely, a reduced singlet–triplet energy gap and charge transfer would be detectable if the Lewis base is a conjugated fluorophore. This exemplifies the great potential of In situ post-synthesis strategy in the design of new luminescent materials for light-emitting diodes and encryption via inkjet printing.
    Type of Medium: Online Resource
    ISSN: 1359-7345 , 1364-548X
    URL: Article
    DOI: 10.1039/D2CC06749H
    Language: English
    Publisher: Royal Society of Chemistry (RSC)
    Publication Date: 2023
    detail.hit.zdb_id: 1472881-3
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  • 8
    Online Resource
    Online Resource
    Mitochondria-targeting NIR AIEgens with cationic amphiphilic character for imaging and efficient photodynamic therapy
    Royal Society of Chemistry (RSC) ; 2023
    In:  Chemical Communications Vol. 59, No. 18 ( 2023), p. 2592-2595
    Details
    In: Chemical Communications, Royal Society of Chemistry (RSC), Vol. 59, No. 18 ( 2023), p. 2592-2595
    Abstract: A new dual-cationic amphiphilic AIEgen TPhBT-PyP with NIR emission and efficient 1 O 2 generation was designed. The amphiphilicity of TPhBT-PyP was tuned with dual-positive charges of pyridinium and TPP groups, efficiently targeting mitochondria and distinguishing Gram-positive bacteria. TPhBT-PyP performed well in photodynamic therapy, inducing cancer cell apoptosis and killing S . aureus bacteria.
    Type of Medium: Online Resource
    ISSN: 1359-7345 , 1364-548X
    URL: Article
    DOI: 10.1039/D2CC06457J
    Language: English
    Publisher: Royal Society of Chemistry (RSC)
    Publication Date: 2023
    detail.hit.zdb_id: 1472881-3
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  • 9
    Online Resource
    Online Resource
    An electrochemical biosensor to identify the phenotype of aggressive breast cancer cells
    Royal Society of Chemistry (RSC) ; 2023
    In:  Chemical Communications Vol. 59, No. 26 ( 2023), p. 3890-3893
    Details
    In: Chemical Communications, Royal Society of Chemistry (RSC), Vol. 59, No. 26 ( 2023), p. 3890-3893
    Abstract: Identifying the phenotype of aggressive breast cancer (BC) cells is vital for the effectiveness of surgical intervention and standard-of-care therapy. HER-2 is overexpressed in aggressive BC and MMP-2 is a crucial indicator of invasiveness and metastasis of BC, so we have proposed an electrochemical biosensor in this work to identify the phenotype of aggressive BC cells via detection of HER-2 together with MMP-2 by designing a dual-trapping peptide and a metal organic framework (MOF)-based probe. Specifically, the designed peptide contains both a HER-2 recognition sequence and MMP-2-specific substrate, while the MOF-based probe (AuNPs@HRP@ZIF-8), prepared by loading horseradish peroxidase (HRP) and gold nanoparticles (AuNPs) on ZIF-8, can also combine with the peptide. Consequently, sensitive and specific detection of both HER-2 and MMP-2 can be achieved in the wide range from 50 fg mL −1 to 50 ng mL −1 and 10 fg mL −1 to 10 ng mL −1 , respectively, and the biosensor can distinguish HER-2 + BC cells and evaluate the invasion capability, which might be extended to provide a method for the accurate identification of tumor features in BC subtypes.
    Type of Medium: Online Resource
    ISSN: 1359-7345 , 1364-548X
    URL: Article
    DOI: 10.1039/D3CC00611E
    Language: English
    Publisher: Royal Society of Chemistry (RSC)
    Publication Date: 2023
    detail.hit.zdb_id: 1472881-3
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  • 10
    Online Resource
    Online Resource
    Engineering core–shell chromium nanozymes with inflammation-suppressing, ROS-scavenging and antibacterial properties for pulpitis treatment
    Royal Society of Chemistry (RSC) ; 2023
    In:  Nanoscale Vol. 15, No. 34 ( 2023), p. 13971-13986
    Details
    In: Nanoscale, Royal Society of Chemistry (RSC), Vol. 15, No. 34 ( 2023), p. 13971-13986
    Abstract: Oral diseases are usually caused by inflammation and bacterial infection. Reactive oxygen species (ROS), which come from both autologous inflammation tissue and bacterial infection, play an important role in this process. Thus, the elimination of excessive intracellular ROS can be a promising strategy for anti-inflammatory treatment. With the rapid development of nanomedicines, nanozymes, which can maintain the intracellular redox balance and protect cells against oxidative damage, have shown great application prospects in the treatment of inflammation-related diseases. However, their performance in pulpitis and their related mechanisms have yet to be explored. Herein, we prepared dozens of metallic nanoparticles with core–shell structures, and among them, chromium nanoparticles (NanoCr) were selected for their great therapeutic potential for pulpitis disease. NanoCr showed a broad antibacterial spectrum and strong anti-inflammatory function. Antibacterial assays showed that NanoCr could effectively inhibit a variety of common pathogens of oral infection. In vitro experiments offered evidence of the multienzyme activity of NanoCr and its function in suppressing ROS-induced inflammation reactions. The experimental results show that NanoCr has optimal antibacterial and anti-inflammatory properties in in vitro cell models, showing great potential for the treatment of pulpitis. Therefore, the use of NanoCr could become a new therapeutic strategy for clinical pulpitis.
    Type of Medium: Online Resource
    ISSN: 2040-3364 , 2040-3372
    URL: Article
    DOI: 10.1039/D3NR02930A
    Language: English
    Publisher: Royal Society of Chemistry (RSC)
    Publication Date: 2023
    detail.hit.zdb_id: 2515664-0
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