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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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    Preparation and performance of novel magnetic phase-change-microcapsule-supported Bi2WO6 catalyst

    Zhuoni JiangZhiqing GeShuo YanJingjing Shu...
    158-161页
    查看更多>>摘要：The design and synthesis of novel photocatalyst with self-temperature control function is an important topic in the field of advanced environmental functional materials.In this work,submicron-sized mag-netic phase change microcapsules composed of paraffin core and Fe3O4-loaded silica shell are prepared,on which the Bi2WO6 crystals is grown in situ through hydrothermal reaction to obtain novel magnetic phase-change-microcapsule-supported Bi2WO6 catalyst(MP@FS/BWO).The MP@FS/BWO has a paraffin encapsulation ratio of 57.1％,and the phase change enthalpy of 105.1 J/g in a temperature range of 50-60 ℃,which endows the MP@FS/BWO with a certain self-temperature regulation ability.MP@FS/BWO shows excellent catalytic performance in the decomposition of rhodamine B under the simulated sunlight irradiation.After the light source is turned off,it still has good catalytic ability by maintaining high tem-perature due to its temperature control function based on the phase transition process.The MP@FS/BWO can be easily recycled by magnetic separation and shows good structural stability and reusability.This work provides a new idea for the development of long-effect and energy-saving outdoor photocatalysts.
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    Tuning SMSI to stabilize metallic Pd species:A case study on Pd/TiO2 for HCHO oxidation

    Chunying WangXiaofeng LiuJingyi WangYaobin Li...
    162-166页
    查看更多>>摘要：Pretreatment of the carrier for supported catalysts can effectively improve the strong metal-support in-teraction(SMSI)and increase the dispersion of precious metals,which are critical to many important catalytic reactions.In this work,we tuned SMSI on Pd/TiO2 catalysts through inducing surface defects of TiO2 by pretreated with different atmospheres(H2/N2,N2,O2/N2)at the high temperature(800 ℃).Multiple characterization results illustrated that surface defects anchored Pd species and thus enhanced their dispersion.During reduction,Ti3+species formed and transferred onto the metallic Pd species and then induced SMSI,which effectively stabilize Pd species in the metallic state.The stronger MSI,the more stability of Pd species.As a case,Pd/TiO2-800H2,with strongest MSI,displayed the best HCHO oxidation performance at low temperature(10 ℃).
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    Highly stable side-chain-type cardo poly(aryl ether ketone)s membranes for vanadium flow battery

    Ziming ZhaoQing DaiSihan HuangWenjing Lu...
    167-170页
    查看更多>>摘要：Vanadium flow batteries(VFBs)have drawn considerable attention as an emerging technology for large-scale energy storage systems(ESSs).One of the pivotal challenges is the availability of eligible ion ex-change membranes(ICMs)that provide high ion selectivity,proton conductivity,and stability under rigorous condition.Herein,a'side-chain-type'strategy has been employed to fabricate highly stable phenolphthalein-based cardo poly(arylene ether ketone)s(PAEKs)membrane with low area resistance(0.058 Ω cm2),in which flexible alkyl spacers effectively alleviated inductive withdrawing effect from terminal ion exchange groups thus enabling a stable backbone.The assembled VFBs based on PAEKs bear-ing pendent alkyl chain terminated with quaternary ammonium(Q-PPhEK)demonstrated an energy effi-ciency above 80％over 700 cycles at 160mA/cm2.Such a remarkable results revealed that the side-chain-type strategy contributed to enhancing the ICMs stability in strong oxidizing environment,meanwhile,more interesting backbones would be woken with this design engaging in stable ICMs for VFBs.
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    Dynamic cooperations between lattice oxygen and oxygen vacancies for photocatalytic ethane dehydrogenation by a self-restoring LaVO4 catalyst

    Fen WeiWeichao XueZhiyang YuXue Feng Lu...
    171-176页
    查看更多>>摘要：Thermocatalytic nonoxidative ethane dehydrogenation(EDH)is a promising strategy for ethene produc-tion but suffers from intense energy consumption and poor catalyst durability;exploring technology that permits efficient EDH by solar energy remains a giant challenge.Herein,we present that an oxygen va-cancy(Ov)-rich LaVO4(LaV04-Ov)catalyst is highly active and stable for photocatalytic EDH,through a dynamic lattice oxygen(Olatt.)and Ov co-mediated mechanism.Irradiated by simulated sunlight at mild conditions,LaVO4-Ov effectively dehydrogenates undiluted ethane to produce C2H4 and CO with a con-version of 2.3％.By loading a small amount of Pt cocatalyst,the evolution and selectivity of C2H4 are en-hanced to 275 μmol h-1 g-1 and 96.8％.Of note,LaVO4-Ov appears nearly no carbon deposition after the reaction.The isotope tracked reactions reveal that the consumed Olatt.recuperates by exposing the used catalyst with O2,thus establishing a dynamic cycle of Olatt,and achieving a facile catalyst regeneration to preserve its intrinsic activity.The refreshed LaVO4-Ov exhibits superior reusability and delivers a turnover number of about 305.The Ov promotes photo absorption,boosts ethane adsorption/activation,and accel-erates charge separation/transfer,thus improving the photocatalytic efficiency.The possible photocatalytic EDH mechanism is proposed,considering the key intermediates predicted by density functional theory(DFT)and monitored by in-situ diffuse reflectance infrared Fourier transform spectroscopy(DRIFTS).
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    Polyoxometalate-organic cage with {Ni4SiW9} node for photocatalytic hydrogen evolution

    Jing LiYeqin FengFangyu FuXing Xin...
    177-181页
    查看更多>>摘要：The design and syntheses of metal-organic cages(MOCs)based on polyoxometalates(POMs)build-ing blocks have attracted increasing attention due to their intriguing molecular architectures and physicochemical properties.In this work,we have successfully synthesized and systematically char-acterized a tetrahedral polyoxometalate-based organic cage(POC),K3Na17H12[(C4H6O6)6[Ni4(OH)3(A-α-SiW9O34)]4]-96H2O(Ni16L6(SiW9)4),using tritopic Ni4-substituted Keggin cluster(Ni4SiW9)as nodes and flexible L-(+)-tartaric acid ligands as linkers.The resulting POC tetrahedron has been firstly investigated as efficient catalyst for visible-light-driven hydrogen production,achieving a turnover number of 15,500 after 96-h photocatalysis.Such high catalytic performance of Ni16L6(SiW9)4 POC catalyst could be at-tributed to its unique cage structure,thereby offering more efficient catalytic component accessibility.In addition,spectroscopic analyses illustrated the photocatalytic mechanism and the structural stability of the TBA-Ni16L6(SiW9)4 catalyst during the photocatalytic process.
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    Deciphering the high-carbonization-temperature triggered enzymatic activity of wool-derived N,S-co-doped carbon nanosheets

    Jiachen ZhaoDeshuai YuJianmin ChenShihao Lin...
    182-188页
    查看更多>>摘要：It is well-established that high carbonization temperature will trigger the enzyme-like activity of carbon-based materials.However,the catalytic mechanism is still ambiguous,which hinders the further rational design of nanomaterials as enzyme mimics.Hereby,N,S-rich carbonized wool nanosheets(CWs)were synthesized at different pyrolysis temperatures.As expected,only CWs treated with high-temperature possess intrinsic oxidase-and peroxidase-like activities.Meanwhile,density functional theory(DFT)cal-culations demonstrate that graphitic nitrogen and the co-existence of nitrogen and sulfur in the carbon matrix serve as the active sites for the enzyme-like process.More importantly,combining theoretical calculations and experimental observations,the high-temperature triggered catalytic mechanism can be ascribed to the fact that an appropriate high-temperature maximizes the graphitization degree to a cer-tain extent,at which most of the catalytic active sites are well retained rather than evaporating.More-over,coupling with excellent photothermal conversion efficiency and catalytic performance,CWs can be applied to photothermal-catalytic cancer therapy under near-infrared region(NIR)light irradiation.We believe this work will contribute to understanding the catalytic mechanism of carbon-based nanozymes and promote the development of new biomedical and pharmaceutical applications.
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    Copper coordination-driven self-assembly and encapsulation of PCR reagents

    Chang LuJinkai ZhengJuewen Liu
    189-192页
    查看更多>>摘要：Polymerase chain reactions(PCR)are a very important tool for use in cloning,nucleic acid sequencing and diagnostic testing.The storage conditions of PCR reagents are limited to freezing and a lot of mixing steps are needed.In this paper,we report using metal ions to form coordination nanomaterials with the intrinsic components of the PCR reagents including dNTP,DNA primers and DNA polymerase as an integrated PCR reaction system.To complete PCR reactions,users need only to dissolve the coordination nanomaterials with a buffer and add template DNA.A few transition metal ions were screened and Cu2+was found to be the most effective metal ion for this purpose.Then the encapsulation efficiency of PCR reagents was measured,which can reach close to 100％for the primers and DNA polymerase,but only 10％for dNTP because dNTP was excess.Further study also exhibited this integrated PCR reaction system can be used for DNA detection with a similar detection limit to the normal PCR,and showed good stability of encapsulated PCR nanomaterial after storage for a week.
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    Surface engineering of carbon dots for highly sensitive α-glucosidase assay and inhibition evaluation

    Meijuan LiangGege SongYeqing WanYingying Chen...
    193-197页
    查看更多>>摘要：Monitoring α-glucosidase(α-Glu)activity is of great significance for the early diagnosis of type Ⅱ di-abetes.Here the blue fluorescent carbon dots(CDs)were integrated with two different recognizing molecules,β-cyclodextrin and phenylboronic acid,for assembling a multifunctional CDs(mCDs)nanoplat-form for sensitively analyzing α-Glu and its inhibitors.The hydrolyzed product of 4-nitrophenyl-α-D-glucopyranoside(α-Glu substrate),p-nitrophenol,could efficiently quench the fluorescence of mCDs due to its cooperative molecular recognition with #-cyclodextrin and phenylboronic acid.The mCDs could be utilized for the detection of α-Glu activity with the limit of detection of 0.030 U/L.Moreover,the presentα-Glu detection platform revealed a high selectivity,and other natural enzymes showed scarcely any ef-fect on the present mCDs system.The proposed method could be facilely used to screen α-Glu inhibitors with satisfying performance.The rational mCDs is expected to supplement more comprehensive biosens-ing platforms for highly sensitive and specific recognition of disease-relevant biomarkers with clinical importance.
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    Ultrastable graphene isolated AuAg nanoalloy for SERS biosensing and photothermal therapy of bacterial infection

    Shengkai LiZhiyang LiQing HaoShen Wang...
    198-203页
    查看更多>>摘要：Plasmonic metal nanomaterials with intrinsic surface-enhanced Raman scattering(SERS)and photother-mal properties,especially AuAg nanoalloys with both the outstanding merits of Au and Ag nanocrystals,show huge application prospects in bacterial theranostics.However,the direct exposure of AuAg nanoal-loys in external conditions probably cause undesirable reactions and poisonous metal ion leakage during SERS detection and photothermal antibacterial therapy process,which severely hinder bacterial theranos-tics applications.Herein,we report an ultrastable graphene-isolated AuAg nanoalloy(GAA)with AuAg core confined in few-layer graphitic shell as a versatile platform for bacterial detection and therapy.The encapsulation of graphene ensures the good stability of AuAg core,that its superior SERS and photother-mal properties are therefore further guaranteed.GAA is used for SERS detection of two vital bacterial biomarkers(including corrosive cyanide and pyocyanin),exhibiting good SERS quantitative and multi-plexing ability.GAA is further used for photothermal antibacterial therapy application,and ultrahigh an-tibacterial efficacies for both Gram-negative Escherichia coli and Gram-positive Staphylococcus aureus are achieved under 808 nm laser irradiation.This work proposes a valuable method to develop robust bacte-rial theranostic platform.
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    STRAP binds to and promotes the repair of N1-methyldeoxyadenosine in DNA

    Meijuan ZhouQian LiuMengting PanYing Yang...
    204-207页
    查看更多>>摘要：N1-methyladenosine(m1A)is an important RNA modification that functions in various biological pro-cesses by interacting with cellular proteins.However,the binding proteins of N1-methyldeoxyadenosine(1mdA)in DNA remain largely unknown.Herein,we employed a quantitative proteomics strategy to iden-tify the potential binding proteins of 1mdA in human cells.Our results revealed that serine-threonine kinase receptor-associated protein(STRAP)can bind to 1mdA-carrying DNA.We further demonstrated that STRAP participates in alkylating agent-induced DNA damage response and can promote the repair of 1mdA embedded in DNA.Moreover,we investigated the effects of STRAP on 1mdA-induced perturba-tion in transcription using a shuttle vector-and next-generation sequencing-based assay,and found that STRAP is involved in the transcriptional bypass of 1mdA in human cells.Together,our study revealed STRAP as a novel 1mdA-binding protein in human cells and provided new insight into the biological implications of STRAP and 1mdA modification in human diseases.
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