首页期刊导航|中国化学快报（英文版）
期刊信息/Journal information
中国化学快报（英文版）
中国化学快报（英文版）

梁晓天

月刊

1001-8417

cclbj@imm.ac.cn

010-63165638

100050

北京市先农坛街1号

中国化学快报（英文版）/Journal Chinese Chemical LettersCSCDCSTPCD北大核心SCI
查看更多>>本刊是由中国科协主管、中国化学会主办、中国医学科学院药物所承办的学术期刊，是由著名化学家梁晓天院士主编。是中国化学界通向世界的窗口，内容覆盖化学全领域。本刊的办刊宗旨是“新、快、准”，我们将坚持这个宗旨，力求及时反映化学研究中各个相关领域内的最新进展及热点问题，主要读者群是科研人员、研究生、大学教师。现已被国内外多家数据库收录，如SCI　Search、Chemical Abstract、Research Alert、Chemistry Citation Index、《日本科技文献速报》、万方数据数字化期刊群、中国学术期刊过刊全文数据库、中国学术期刊（光盘版）、中国学术期刊文摘、中文期刊全文数据库、俄罗斯Рж期刊源等。
正式出版
收录年代

    Artificial synapses based on organic electrochemical transistors with self-healing dielectric layers

    Yushan GaoJunyao ZhangDapeng LiuTongrui Sun...
    423-427页
    查看更多>>摘要：Organic electrochemical transistors(OECTs)have emerged as one type of promising building block for neuromorphic systems owing to their capability of mimicking the morphology and functions of biological neurons and synapses.Currently,numerous kinds of OECTs have been developed,while self-healing per-formance has been neglected in most reported OECTs.In this work,the OECTs using self-healing polymer electrolytes as dielectric layers are proposed.Several important synaptic behaviors are simulated in the OECTs by doping the channel layers with ions from the electrolytes.Benefitting from the dynamic hydro-gen bonds in the self-healing polymer electrolytes,the OECTs can successfully maintain their electrical performance and the ability of emulating synaptic behaviors after self-healing compared with the initial state.More significantly,the sublinear spatial summation function is demonstrated in the OECTs and their potential in flexible electronics is also validated.These results suggest that our devices are expected to be a vital component in the development of future wearable and bioimplantable neuromorphic systems.
      原文链接:
    • NETL
    • NSTL
    • 万方数据

    Asymmetric side-chain engineering of organic semiconductor for ultrasensitive gas sensing

    Xiaoying MaXiaojuan DaiLanyi XiangJiajun Chang...
    428-433页
    查看更多>>摘要：Molecular structure of organic semiconductor plays a critical role in determining the performance and functionality of organic electronic devices,by optimizing the electrical,optical and physicochemical prop-erties.Substituted alkyl chains are fundamental units in tailering the solubility and assemblability,among which the asymmetric properties have been reported as key element for controlling the packing motifs and intrinsic charge transport.Here,we expanded the scope of molecular asymmetry dependent sensing features based on a new series of naphthalene diimides(NDI)-based derivatives substituted with a same branching alkyl chain but various linear-shaped alkyl chains(Cn-).A clear molecular stacking change,from head-to-head bilayer to head-to-tail monolayer packing model,is observed based on the features of anisotropic molecular interactions with the change in the chain length.Most importantly,a unique LUMO level shift of 0.17 eV is validated for NDI-PhC4,providing a record sensitivity up to 150％to 0.01 ppb ammonia,due to the desired molecular reactivity and device amplification properties.These results indicate that asymmetric side-chain engineering opens a route for breath healthcare.
      原文链接:
    • NETL
    • NSTL
    • 万方数据

    Highly elastic and degradable vitrimeric elastomers using polycondensation

    Yue LiuYongshuang HuangChao LiGuifu Si...
    434-438页
    查看更多>>摘要：Introducing covalently crosslinked network to polymer matrix can merge the advantages in reprocess-ing and durability of polymers.In this contribution,a series of high-performance vitrimeric elastomers were achieved via polycondensation.The topological structures of polymers were tuned by varying the feeding ratios of bisacetoacetate,hex-substituted bisacetoacetate,bisamine and tris(2-aminoethyl)amine.With these structural manipulations,the vitrimeric elastomers presented great elastic recovery properties(strain recovery value up to 80％)benefiting from the introduction of long chain branch.Furthermore,the elastomers exhibited excellent reprocessing property,water vapor/oxygen barrier and adhesive proper-ties.Specially,the elastomers could be degraded into monomer under acid conditions which enabled the elastomer synthesis again in closed loop recycling system.The ease of the polycondensation in this work to prepare highly elastic and recyclable vitrimeric elastomers demonstrated exciting opportunities for the synthesis of sustainable polymers.
      原文链接:
    • NETL
    • NSTL
    • 万方数据

    Triplet-triplet annihilation upconversion materials as electrophoretic inks

    Qiaoyu ZhangGuiwen LuoJinping ChenTianjun Yu...
    439-442页
    查看更多>>摘要：Luminescent materials that can be reversibly switched by electric field stimulation are attractive since the potential application for optoelectronic devices.Here we report a triplet-triplet annihilation upconversion(TTA-UC)system with electrophoretic response which is developed as the electrophoretic ink.The TTA-UC system consists of an ionic derivative of 9,10-diphenyl anthracene(DPA)as the annihilator and Pt(ll)octaethylporphyrin(PtOEP)as the sensitizer.Upon applying an electric field,migration and enrichment of positively charged DPA derivatives towards the cathode results in a 20％enhancement of TTA-UC.A quasi-solid film for electrically writing is made using the electrophoretic TTA system as the ink and a platinum electrode as a pen.The prototype of TTA-UC ink demonstrates unique luminescence functions upon electrically writing and erasing,providing a promising strategy to develop electronic devices for display,information storage and encryption.
      原文链接:
    • NETL
    • NSTL
    • 万方数据

    Simple-structured hydrophilic sensors for sweat uric acid detection with laser-engraved polyimide electrodes and cellulose paper substrates

    Linhe XuXueshan HuShuang ZhouZe Zhang...
    443-448页
    查看更多>>摘要：Accurate detection of uric acid(UA)is crucial for diagnosing gout,yet traditional sweat-based UA sen-sors continue to face challenges posed by complex and costly electrode fabrication methods,as well as weakly hydrophilic substrates.Here,we designed and developed simple,low-cost,and hydrophilic sweat UA detection sensors constructed by carbon electrodes and cellulose paper substrates.The carbon elec-trodes were made by carbonized polyimide films through a simple,one-step laser engraving method.Our electrodes are porous,possess a large specific surface area,and are flexible and conductive.The sub-strates were composed of highly hydrophilic cellulose paper that can effectively collect,store,and trans-port sweat.The constructed electrodes demonstrate high sensitivity of 0.4 μA L μmol-1 cm-2,wide linear range of 2-100 μmol/L.In addition,our electrodes demonstrate high selectivity,excellent reproducibil-ity,high flexibility,and outstanding stability against mechanical bending,temperature variations,and extended storage periods.Furthermore,our sensors have been proven to provide reliable results when detecting UA levels in real sweat and on real human skin.We envision that these sensors hold enormous potential for use in the prognosis,diagnosis,and treatment of gout.
      原文链接:
    • NETL
    • NSTL
    • 万方数据

    Enhanced cycle stability of aprotic Li-O2 batteries based on a self-defensed redox mediator

    Guiru SunYan WangDaming YangZexu Zhang...
    449-452页
    查看更多>>摘要：LiBr as a promising redox mediator(RM)has been applied in Li-O2 batteries to improve oxygen evo-lution reaction kinetics and reduce overpotentials.However,the redox shuttle of Br3-can induce the unexpected reactions and thus cause the degradation of LiBr and the corrosion of Li anode,resulting in the poor cyclability and the low round-trip efficiency.Herein,MgBr2 is firstly employed with dual func-tions for Li-O2 batteries,which can serve as a RM and a SEI film-forming agent.The Br-is beneficial to facilitating the decomposition of Li2O2 and thus decreasing the overpotential.Additionally,a uniform SEI film containing Mg and MgO generates on Li anode surface by the in-situ spontaneous reactions of Mg2+and Li anode in an O2 environment,which can suppress the redox shuttle of Br3-and improve the inter-face stability of Li anode and electrolyte.Benefiting from these advantages,the cycle life of Li-O2 battery with MgBr2 electrolyte is significantly extended.
      原文链接:
    • NETL
    • NSTL
    • 万方数据

    Congener-derived template to construct lithiophilic organic-inorganic layer/interphase for high volumetric capacity dendrite-free Li metal batteries

    Kang YangLong LiYuanbin XiaoQiaoli Zhang...
    453-460页
    查看更多>>摘要：The development of lithium-metal batteries(LMBs)is seriously restricted by the out-of-control dendrites growth and infinite volume expansion.Herein,a pervasive organic-inorganic layer construction strategy is reported for the composite lithium metal anode with congener-derived organic-inorganic solid elec-trolyte interphase(SEI).In this strategy,the organic-inorganic Ag@polydopamine(Ag@PDA)layer is coated on the arbitrary substrates by a simple two-step method.The thin and stable congener-derived SEI is in-situ formed with fewer inorganic components and more organic components during charging/discharging.The polydopamine with sufficient adhesion groups and lithiophilic Ag layer realize near-zero nucleation overpotential during lithium deposition.The low interface resistance and stable lithium deposition are achieved.Moreover,the practical areal and volumetric capacities of the composite anode with three-dimensional copper(3DCu)as the substrate are 10 mAh/cm2 and 1538 mAh/cm3(vs.the mass of anode).The symmetrical cell shows very low polarization voltage(10 mV)and more than 2500 h cycles life at 1 mA/cm2(1 mAh/cm2).The LiNi0.8Co0.1Mn0.1O2(NCM811)-based full cells show improved capacity re-tention(82％)after 100 cycles at 0.5 C.The modified lithiophilic anode with congener-derived interphase provides a promising strategy to realize the next-generation dendrite-free LMBs.
      原文链接:
    • NETL
    • NSTL
    • 万方数据

    A scalable one-pot strategy for the development of polymer electrolytes adaptable to room-temperature high-voltage lithium batteries

    Yue GuoXinxin QuZhen LiRuiyuan Tian...
    461-467页
    查看更多>>摘要：Poly(ethylene oxide)(PEO)polymer electrolytes(PEs)have been commercially applied in LiFePO4||Li solid-state lithium batteries(SSLBs).However,it remains challenging to develop PEO-based PEs appli-cable to the high-voltage SSLBs with higher energy density,owing to the poor electrochemical stabil-ity of PEO.Herein,we report a scalable strategy for fabricating PEO-based PEs with high-voltage com-patibility,by exploiting a new mechanism to stabilize the cathode-electrolyte interface in the high-voltage SSLBs.The protocol only involves a one-pot synthesis procedure to covalently crosslink the PEO chains,in the presence of high-content lithium bis(trifluoromethylsulphonyl)imide(LiTFSI)salts and N,N-dimethylformamide(DMF).LiTFSI-DMF supramolecular aggregates are formed and firmly embedded in the polymer network,endowing the PE with high room-temperature ionic conductivity.The dissociated and highly concentrated TFSI-anions can enter the Helmholtz layer close to the high-voltage cathode,leading to the formation of a thin and homogeneous cathode electrolyte interface(CEI),mainly com-posed of LiF,on the cathode.The CEI with high electrochemical stability can effectively stabilize the cathode-electrolyte interface,enabling long-term stable cycling of the high-voltage LiCoO2||Li and nickel-rich NCM622||Li batteries at room temperature.The simplicity and scalability of the strategy makes the reported PEO-based PE potentially applicable in high-voltage SSLBs in practice.
      原文链接:
    • NETL
    • NSTL
    • 万方数据

    Constructing high-capacity and flexible aqueous zinc-ion batteries with air-recharging capability using organic cathodes

    Xiaojuan ChenHaoqi SuBaozhu YangXiaocen Liu...
    468-472页
    查看更多>>摘要：Flexible aqueous zinc-ion batteries(AZIBs)with air-recharging capability are a promising self-powered system applied in future wearable electronics.It is desired to develop high-capacity air-rechargeable AZ-IBs.Herein,we developed a flexible AZIB with air-recharging capability based on trinitrohexaazatrinaph-thylene(TNHATN)cathode and a ZnSO4 electrolyte.The flexible Zn//TNHATN battery exhibits high volu-metric energy density(21.36 mWh/cm3)and excellent mechanical flexibility.Impressing,the discharged flexible Zn//TNHATN battery can be chemical self-charged via the redox reaction between TNHATN cath-ode and O2 from the air.After oxidation in air for 15 h,such flexible Zn//TNHATN battery can deliver a high specific capacity of 320 mAh/g at 0.5 A/g,displaying excellent air-recharging capability.Notably,this flexible Zn//TNHATN battery also works well in chemical or/and galvanostatic charging mixed modes,showing reusability.This work provides a new insight for designing flexible aqueous self-powered sys-tems.
      原文链接:
    • NETL
    • NSTL
    • 万方数据

    Mechanistic insights into the processes of the initial stage of electrolyte degradation in lithium metal batteries

    Yao WangJuncheng WangJianwei NaiJianmin Luo...
    473-478页
    查看更多>>摘要：The lithium(Li)metal batteries(LMBs)are considered one of the most promising next-generation batter-ies due to its extremely high theoretical specific capacity.However,there are a couple of issues,e.g.,the serious side reactions that occurred at the solid-liquid interface between the electrolyte and Li metal an-ode,hindering the broad commercialization of LMBs.Thus,a comprehensive understanding of the mech-anisms underlying the decomposition of electrolytes is crucial to the design of LMBs.Herein,we utilize density functional theory simulations to explore the decomposition mechanism of electrolytes.The most commonly used ether electrolyte solvents,i.e.,1,2-dimethoxyethane(DME)and 1,3-dioxalane(DOL),based on suitable lithium salts,namely bis(trifluoromethanesulfonyl)imide(LiTFSI),are chosen to model the ac-tual situations.We explicitly demonstrate that an electron-rich environment near the interface accelerates the decomposition of electrolytes.For ether electrolytes,we show that the LiTFSI degradation path is de-pending on the ratio of DOL to DME.In addition,the solvation structures of lithium-ion undergo a series of transformations upon electrolyte degradation,becoming thermodynamically more favorable and having a higher reduction potential in an electron-rich environment.Our finding provides new insights into the decomposition mechanisms of electrolytes and paves the way for the rational design of high-performance LMBs.
      原文链接:
    • NETL
    • NSTL
    • 万方数据