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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。
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    Recent advances in electrocatalytic generation of indole-derived radical cations and their applications in organic synthesis

    Wei ZhouXi ChenLin LuXian-Rong Song...
    106-123页
    查看更多>>摘要:Indole-derived radical cations,open-shell reactive species,display distinctive dual reactivity due to the carbon-centered radical and more electrophilic carbocation,which frequently appear in a variety of sin-gle electron oxidation reactions for synthesizing structurally diverse functionalized indoles and indo-lines.Electrocatalysis is considered as a synthetically attractive and environmentally friendly alternative for driving the single electron oxidation of indoles.Remarkable achievements in electrocatalytic indole-derived radical cation-mediated indole functionalization have been realized so far.This review compre-hensively summarizes the recent progresses in the applications of electrocatalytic indole radical cations,including C(sp2)-H functionalization,dearomative 2,3-difunctionalization,and ring-opening reaction,em-phasizing the vital single electron oxidation steps of indoles,the substrates scope and limitations,and the reaction mechanisms.

    mide naphthotubes:Biomimetic macrocycles for selective molecular recognition

    Cheng-Da ZhaoHuan YaoShi-Yao LiFangfang Du...
    124-131页
    查看更多>>摘要:Selective molecular recognition in water is routine for bioreceptors,but remains challenging for synthetic hosts.This is principally because noncovalent interactions are usually less efficient in aqueous environ-ments.By mimicking the cavity feature of bioreceptors,Prof.Wei Jiang proposed and clarified the concept of"endo-functionalized cavity".Through situating polar binding sites into a deep hydrophobic cavity,we designed and synthesized several macrocyclic hosts,among which amide naphthotubes are the most rep-resentative.The hosts can selectively recognize various polar molecules including organic micropollutants,drug molecules,and chiral molecules in water by employing the hydrophobic effect and shielded hydro-gen bonding.In addition,these biomimetic hosts have been applied in spectroscopic analysis,adsorptive separation and self-assembly.In this review,we provide an overview of recent advances on amide naph-thotubes with special emphasis on the efforts of Jiang's group.We are convinced that these biomimetic macrocycles will make further contributions to supramolecular chemistry and beyond.

    Recent applications of macrocycles in supramolecular catalysis

    Conghui WangLei XuZhenhua JiaTeck-Peng Loh...
    132-141页
    查看更多>>摘要:Numerous supramolecular macrocycles have been utilized for developing catalysts by exploiting their spe-cific molecular recognition and ability to form inclusion complexes through noncovalent interactions.The cyclic structure and modified functional groups of these macrocycles can influence substrate and transi-tion state stability,as well as reaction selectivity.The inner cavities of these macrocycles are particularly beneficial,as they enable substrates to adopt preorganized arrangements and serve as versatile platforms for highly efficient supramolecular catalytic systems.This minireview provides an overview of recent ad-vancements in supramolecular catalysis using various macrocycles,such as crown ethers,cyclodextrins,calixarenes,pillararenes,cucurbiturils,and other novel macrocycles.

    Unveiling inverse vulcanized polymers as metal-free,visible-light-driven photocatalysts for cross-coupling reactions

    Lang GaoCen ZhouRui WangFeng Lan...
    142-146页
    查看更多>>摘要:Inverse vulcanized polymers(IVPs)that generated from elemental sulfur and smaller amounts of alkenes have found broad promising applications such as cathode materials for Li-S batteries,dynamic and re-pairable materials,optics applications,and metal sorption.However,their exploration in organic synthe-sis is still unprecedented.Here we first report the application of inverse vulcanized polymers in catal-ysis for organic transformations.A biomass-derived inverse vulcanized polymer(IVP-EAE)is found to be capable of catalyzing cross-coupling reactions in a transition-metal-free fashion under visible light.This method allows the direct C-H functionalization of pyrroles and N-arylacrylamides with(hetero)aryl halides,respectively,leading to the formation of two sets of structurally important scaffolds including pyrrole-containing biaryls and 3,3'-disubstituted oxindoles with high selectivity.We anticipate this study will not only unveil the new potential of IVPs,but also offer a distinct type of catalysts for organic trans-formations.

    Construction of ZnO@CDs@Co3O4 sandwich heterostructure with multi-interfacial electron-transfer toward enhanced photocatalytic CO2 reduction

    Xiuzheng DengYi KeJiawen DingYingtang Zhou...
    147-152页
    查看更多>>摘要:Photocatalytic conversion of CO2 into small-molecule chemical feedstocks can meet the growing de-mand for energy and alleviate the global warming.Herein,a p-n ZnO@CDs@Co3O4 heterojunction with sandwich structure was constructed by calcination method of self-assembled ZIF-8@CDs@ZIF-67.The ZnO@CDs@Co3O4 with well-defined interfacial structure exhibited the significantly enhanced photocat-alytic CO2 reduction activity,and the optimal catalyst indicated the(CO+CH4)evolution rate of 214.53μmol g-1 h-1 under simulated solar light,which was superior to ZnO,Co3O4 and binary ZnO@Co3O4.The internal cavity,exposed active sites,multiple interfaces and constructed p-n heterojunction can fa-cilitate the light harvesting and photoexcited electron transfer.Besides,after introduction of CDs placed in the middle layer between ZnO and Co3O4,CDs with excellent photoelectric property further promoted charge separation and migration.This work represents an appealing strategy to construct well-defined photocatalysts for boosting CO2 photoreduction.

    Highly dispersed Ru nanospecies on N-doped carbon/MXene composite for highly efficient alkaline hydrogen evolution

    Minying WuXueliang FanWenbiao ZhangBin Chen...
    153-159页
    查看更多>>摘要:Hydrogen has emerged as a promising environmentally friendly energy source.The development of low-cost,highly active,stable,and easily synthesized catalysts for hydrogen evolution reactions(HER)re-mains a significant challenge.This study explored the synthesis of nitrogen-doped MXene-based compos-ite catalysts for enhanced HER performance.By thermally decomposing RuCl3 coordinated with melamine and formaldehyde resin,we successfully introduced nitrogen-doped carbon(N-C)with highly dispersed ruthenium(Ru)onto the MXene surface.The calcination temperature played a crucial role in controlling the size of Ru nanoparticles(Ru NPs)and the proportion of Ru single-atom(Ru SA),thereby facilitating the synergistic enhancement of HER performance by Ru NPs and Ru SA.The resulting catalyst prepared with a calcination temperature of 600 ℃,Ti3C2Tx-N/C-Ru-600(TNCR-600),exhibited exceptional HER ac-tivity(η10=17 mV)and stability(160 h)under alkaline conditions.This work presented a simple and effective strategy for synthesizing composite catalysts,offering new insights into the design and regula-tion of high-performance Ru-based catalysts for hydrogen production.

    Crystalline carbon nitride with in-plane built-in electric field accelerates carrier separation for excellent photocatalytic hydrogen evolution

    Wengao ZengYuchen DongXiaoyuan YeZiying Zhang...
    160-165页
    查看更多>>摘要:Achieving a high carrier migration efficiency by constructing built-in electric field is one of the promising approaches for promoting photocatalytic activity.Herein,we have designed a donor-acceptor(D-A)crys-talline carbon nitride(APMCN)with 4-amino-2,6-dihydroxypyrimidine(AP)as electron donor,in which the pyrimidine ring was well embedded in the heptazine ring via hydrogen-bonding effect during hy-drothermal process.The APMCN shows superior charge-transfer due to giant built-in electric field(5.94 times higher than pristine carbon nitride),thereby exhibiting excellent photocatalytic H2 evolution rate(1350 μmol/h)with a high AQY(62.8%)at 400 nm.Mechanistic analysis based on detailed experimental investigation together with theoretical analysis reveals that the excellent photocatalytic activity is at-tributed to the promoted charge separation by the giant internal electric field originated from the D-A structure.

    Non-contact gaseous microplasma electrode as anode for electrodeposition of metal and metal alloy in molten salt

    Junhan LuoQi QingLiqin HuangZhe Wang...
    166-169页
    查看更多>>摘要:Microplasma based on glow discharge could act as a non-contact gaseous electrode and has attracted much attention in both fundamental research and application.Herein,with microplasma as the anode,the electrodeposition process of a series of metal and metal alloys in molten salt has been systemically studied.Four metal cations with different valence states,silver(Ag+),nickel(Ni2+),copper(Cu2+),and iron(Fe3+),could all be reduced on the solid cathode with high current efficiency and the corresponding metal products were of high purity.The electrodeposition of aluminum-lanthanum(Al-Ln)alloy on the aluminum cathode was also successfully carried out with microplasma as the anode,and the same alloy was obtained by using the conventional anode electrode.These results indicated that microplasma anode based on non-contact direct-current(DC)glow discharge is a promising electrode to be applied in molten salt electrolysis.

    Dynamic tracking of exsolved PdPt alloy/perovskite catalyst for efficient lean methane oxidation

    Yanling YangZhenfa DingHuimin WangJianhui Li...
    170-175页
    查看更多>>摘要:Supported Pd based catalysts are considered as the efficient candidates for low-carbon alkane oxida-tion for their outstanding capability to break C-H bond.Whereas,the irreversible deactivation of Pd based catalysts was still frequently observed.Herein,we reinforced the extruded Pd nanoparticles with quantitive Pt to assemble the evenly distributed PdPt nanoalloy onto ferrite perovskite(PdPt-LCF)ma-trix with strengthened robustness of metal/oxide support interface.We further co-achieved the enhanced performance,anti-overoxidation as well as resistance of vapor-poisoning in durability measurement.The operando X-ray photoelectron spectroscopy(O-XPS)combined with various morphology characterizations confirms that the accumulation of surface deep-oxidation species of Pd4+is the culprit for fast activity loss in exsolved Pd system,especially at high temperature of 400 ℃.Conversely,it could be completely suppressed by in-situ alloying Pd with equal amount of Pt,which helps maintain the metastable Pd2+/Pd shell and metallic solid-solution core structure.The density function theory(DFT)calculations further buttress that the dissociation of C-H was facilitated on alloy/perovskite interface which is,on the con-trary,resistant toward O-H bond cleavage,as compared to Pd/perovskite.Our work suggests that the modification of exsolved metal/oxide catalytic interface could further enrich the toolkit of heterogeneous catalyst design.

    Anchoring heterometallic cluster on P-doped carbon nitride for efficient photocatalytic nitrogen fixation in water and air ambient

    Chao-Long ChenRong ChenLa-Sheng LongLan-Sun Zheng...
    176-180页
    查看更多>>摘要:Light-driven nitrogen fixation to produce ammonia is a green and economical technology of nitrogen reduction but is still quite challenging,especially in an air atmosphere without any sacrificial reagents.Herein,we demonstrate efficient photocatalytic nitrogen fixation using water and air directly by loading lanthanide-transition metal(4f-3d)cluster NdCo3 on two-dimensional P-doped graphitic carbon nitrides(PCN)material surface.Benefiting from the increase in the number of nitrogen vacancies(NVs)and highly matched band gap structure and excellent hole trapping ability of clusters,the NdCo3/PCN photocatalyst exhibits efficient nitrogen reduction activity with 371(in air)and 825 μmol h-1 g-1(in pure nitrogen)without any sacrificial reagents.The introduction of potassium sulfate inhibits hydrogen production and promotes nitrogen reduction activation.This work suggests that anchoring precisely structured clusters on 2D materials may enhance photocatalytic nitrogen reduction under normal temperature and pressure.