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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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    Single droplet formation by controlling the viscoelasticity of polymer solutions during inkjet printing

    Dong LvXuelei LiuWei LiQiang Zhang...
    244-248页
    查看更多>>摘要：Inkjet printing has emerged as a potential solution processing method for large-area patterned films.Dur-ing inkjet printing,a single droplet without satellite droplet is required for high-quality film.Herein,we propose a strategy for obtaining a single droplet by adjusting the reduced concentration(c/c*,where c*is the critical overlap concentration)in the range of 1.0-1.5.Droplet formation can be categorized into three distinct regimes:(1)c/c*＜1.0,satellite droplet;(2)c/c*=1.0-1.5,single droplet;(3)c/c*＞2.0,no droplet.Furthermore,an inertial-capillary balance led to the 2/3-power scaling of the minimum radius with time for the solutions of c/c*＜1.0.However,for the solutions of c/c*=1.0-1.5,the ligament radius decreased exponentially with time.Moreover,the Weissenberg number was higher than the critical value of 0.5,indicating that the polymer chains underwent coil-stretch transition.The viscoelastic-capillary bal-ance dominated instead of the inertial-capillary balance.The resulting viscoelastic resistance reduced the length of the ligament and increased the velocity difference between the satellite and main droplets.Consequently,a single droplet was formed.In addition,the law can be successfully generalized to various molecular weights,molecular structures and solvents.
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    Dynamic asymmetric mechanical responsive carbon nanotube fiber for ionic logic gate

    Pei CaoYilan WangLejian YuMiao Wang...
    249-253页
    查看更多>>摘要：Inspired by biological ion channels,numerous artificial asymmetric ion channels have been synthesized to facilitate the fabrication of ionic circuits.Nevertheless,the creation of biomimetic asymmetric ion chan-nels necessitates expensive scientific apparatus and intricate material processing procedures,which con-strains its advancement within the realm of ionic devices.In this study,we have devised dynamic asym-metric ion channels with mechanical responsiveness by combining polymers of varying elastic modulus along the longitudinal axis of carbon nanotube fiber(CNTF).The ion rectification can be modulated via the disparate response of CNTF-based ion channels to mechanical stress.We have effectively employed these asymmetric ion channels with mechanical sensitivity in the design of a logic gate device,achiev-ing logic operations such as"AND"and"OR".The conception of these dynamic asymmetric ion channels with mechanical sensitivity offers a straightforward,cost-effective,and versatile approach for generating ion channels,highlighting their potential application in intricate,highly integrated ionic circuits.
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    Curing the vulnerable heterointerface via organic-inorganic hybrid hole transporting bilayers for efficient inverted perovskite solar cells

    Kangrong YanZiqiu ShenYanchun HuangBenfang Niu...
    254-257页
    查看更多>>摘要：To promote the practices of perovskite photovoltaics,it requires to develop efficient perovskite solar cells(PVSCs)standing long-time operation under the adverse environments.Herein,we demonstrate that the tailor-made conjugated polymers as conductive adhesives stabilized the originally redox-reactive het-erointerface between perovskite and metal oxide,facilitating the access of efficient and stable inverted PVSCs.It was revealed that bithiophene and phenyl alternating conjugated polymers with partial glycol chains atop of the metal oxide layer has resulted in effective organic-inorganic hybrid hole transporting bilayers,which allow maintaining efficient hole extraction and transport,meanwhile preventing halide migration to directly contact with the nickel oxide(NiOx)layer.As a result,the corresponding inverted PVSCs with the organic-inorganic hole transporting bilayers have achieved an excellent power conver-sion efficiency of 23.22％,outperforming 20.65％of bare NiOx-based devices.Moreover,the encapsulated PVSCs with organic-inorganic bilayers exhibited the excellent photostability with 91％of the initial effi-ciency after 1000-h one-sun equivalent illumination in ambient conditions.Overall,this work provides new insights into stabilizing the vulnerable heterointerface for perovskite solar cells.
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    Promotion effect of epoxy group neighboring single-atom Cu site on acetylene hydrochlorination

    Junchen PengXue YinDandan DongZhongyuan Guo...
    258-262页
    查看更多>>摘要：Carbon materials have been used as the support for catalysts in the field of acetylene hydrochlorina-tion,the influence of inevitable oxygen-containing moieties on the reaction is often ignored and the mechanism of the oxygen-doping structure remains ambiguous.Herein,we explored the effect of the oxygen-containing group(C-O-C)in the support on the activity of single-atom dispersed Cu catalysts.By immersing the Cu single-atom catalyst in an alkaline solution,the epoxy species on the carbon support was cleaved to obtain a pure ether species while the Cu site was modified to a more electron-deficient state.The turnover frequency value of Cu/O-FLP catalyst with epoxy groups was 1.6-fold higher than that of alkaline treated catalyst.Our result indicated that the epoxy groups could assist adjacent single-atom Cu sites to synergistically promote the adsorption and cleavage of the reactant hydrogen chloride toward form C-OH and Cu-Cl bonds,and reduce the reaction energy barrier.The presence of electron deficient Cu sites and ether species could induce competitive adsorption of the acetylene and hydrogen chloride,thereby reducing the activity of the catalyst.This study highlights the influence of surface oxygen species and the tunability of the support,providing the foundation for the fabrication of higher-activity Cu cata-lysts for acetylene hydrochlorination.
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    Photoredox-catalyzed C-glycosylation of peptides with glycosyl bromides

    Chen LiZiyuan ZhaoShouyun Yu
    263-267页
    查看更多>>摘要：Glycosyl radicals,produced under mild photoredox conditions,show unique utility in the preparation of C-linked glycoconjugates.We herein report the construction of C-glycosidic bonds on α,β-dehydroalanine(DHA)of peptides with easily available glycosyl bromides as glycosyl radical precursors under highly anomeric control,leading to C-glycosylation modifications of peptides.This method not only has out-standing functional group compatibility,but also is feasible in near-physiological conditions(pH～7 and temperature T ≤ 37 ℃ in aqueous media).
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    Photocatalytic dicarboxylation of strained C-C bonds with CO2 via consecutive visible-light-induced electron transfer

    Yi LiuZhe-Hao WangGuan-Hua XueLin Chen...
    268-273页
    查看更多>>摘要：Dicarboxylic acids have a wide range of applications in the polymer industry to construct valuable mate-rials.Photocatalysis has recently emerged as an efficient and sustainable strategy to generate dicarboxylic acids.However,photocatalytic dicarboxylation with CO2 is mainly limited to unsaturated bonds,and the dicarboxylation of C-C single bonds still remains a challenge.Herein,we report a photocatalytic dicar-boxylation of C-C single bonds in strained rings with CO2 units via consecutive photo-induced electron transfer(ConPET).It is also the first photocatalytic reductive ring-opening reaction of cyclobutanes.No-tably,this transition-metal-free protocol exhibits good functional group tolerance,broad substrate scope,facile scalability,and easy product derivatizations.Moreover,diacids can easily be derivatized to main-chain liquid crystalline polyesters.
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    Ultra-highly selective recognition of nucleosides over nucleotides by rational modification of tetralactam macrocycle and its application in enzyme assay

    Huan YaoJian QinYan-Fang WangSong-Meng Wang...
    274-278页
    查看更多>>摘要：Artificial macrocycle with high binding selectivity in water is often challenging but urgently needed in various research and application areas.Herein,we report a new water-soluble biomimetic tetralac-tam macrocycle and realize the ultra-high selectivity to nucleosides over corresponding monophos-phate nucleotides by rational modification.The introduction of charged groups at the periphery of endo-functionalized cavity makes the selectivity(guanosine to guanosine 5'-monophosphate)increase remark-ably from 100 to 1119.Based on the ultra-high selectivity of biomimetic tetralactam macrocycle,the sen-sitive CD73 enzyme activity assay was then achieved through product-selective fluorescence indicator displacement assay.Furthermore,the capability of the proposed method for inhibitor screening was suc-cessfully displayed.
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    Palladium-catalyzed stereoselective decarboxylative[4+2]cyclization of 2-methylidenetrimethylene carbonates with pyrrolidone-derived enones:Straightforward access to chiral tetrahydropyran-fused spiro-pyrrolidine-2,3-diones

    Ke ZhangSheng ZuoPengyuan YouTong Ru...
    279-282页
    查看更多>>摘要：A novel asymmetric[4+2]cycloaddition of 2-methylidenetrimethylene carbonate with pyrrolidone-derived enones has been achieved to produce the functionalized tetrahydropyran-fused spirocyclic scaf-folds via palladium-catalysis.An array of enantioenriched spiro-pyrrolidine-2,3-diones bearing adjacent quaternary and tertiary stereocenters are obtained in high yields with excellent enantioselectivities(up to 96％yield and 99％ee).The further transformation of the product has been accomplished for the con-struction of medical interesting β2,2-amino acids and β-lactams.Preliminary mechanistic research was well conducted.
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    Dynamically switchable porphyrin-based molecular tweezer for on-off fullerene recognition

    Zhimin SunXin-Hui GuoYue ZhaoQing-Yu Meng...
    283-287页
    查看更多>>摘要：Herein,a novel molecular tweezer based on 2,2'-bipyridine-bridged porphyrin subunits was constructed for efficient fullerenes recognition.The syn conformation of the molecule,which was obtained by Zn(Ⅱ)coordination,gives rise to a proper cavity to interact with fullerene guests to form a stable 1:1 complex in toluene solution.It exhibits distinct binding selectivity towards C60 over C70.Moreover,the fullerene recognition capacity can be adequately suppressed by importing H2PO4-to competitively capture Zn(Ⅱ)along with syn-anti conformational conversion.Subsequently,the molecular tweezer regenerated to bind the fullerene by introducing the Ca2+into the system.Significantly,the association-disassociation process can be switched reversibly and repeatedly.
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    Cucurbit[7]uril confined phenothiazine bridged bis(bromophenyl pyridine)activated NIR luminescence for lysosome imaging

    Hui-Juan WangWen-Wen XingZhen-Hai YuYong-Xue Li...
    288-292页
    查看更多>>摘要：Macrocycle confinement induced guest near-infrared(NIR)luminescence was research hotspot cur-rently.Here in,we reported a cucurbit[7]uril(CB[7])confined 3,7-bis((E)-2-(pyridin-4-yl)vinyl)-10-H-phenothiazine bridged bis(4-(4-bromophenyl)pyridine)(G),which not only boosted its NIR luminescence but also realized detection of HClO/ClO-in living cells and lysosome imaging.Fluorescence spectroscopy experiments were performed to calculate the detection ability of probe G to HClO/ClO-up to 147 nmol/L.As compared with G,supramolecular probe G(C)CB[7]formed after encapsulated by CB[7],the detec-tion ability towards HClO/ClO-was improved to 24 nmol/L which was ascribe to the macrocycle CB[7]confinement increasing the fluorescence intensity to 103 folds.Accompanying the excitation wavelength changing,the fluorescence red-shifted to 820 nm when excited by 570 nm light,which was used to NIR lysosome imaging.Meanwhile,the supramolecular assembly G(C)CB[7]was also successfully used to highly sense to exogenous HClO/ClO-in RAW 264.7 cells and live animal.
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