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

    The guest CH3CN molecule triggers solid-state photochromism in a Cu2I2-based MOF for advanced time-dependent encryption and inkless erasable printing

    Meng-Juan WangBo LiYong-Li WeiShu-Na Zhao...
    532-537页
    查看更多>>摘要：It remains a big challenge to develop solid-state stimuli-responsive materials for time-dependent infor-mation encryption and inkless erasable printing with long retention times.Herein,a 2D Cu2I2-based MOF with photoresponsive spiropyran(SP)groups orderly installed on its skeleton is developed.The struc-tural isomerization from SP to colored merocyanine(MC)form can be triggered by removing the CH3CN guests.Besides,the degree of structural isomerization and the retention time can be adjusted by control-ling the amount of CH3CN guests,exhibiting dynamic photochromic behavior with multicolor states and tunable retention time.Based on these advantages,time-dependent information encryption is successfully achieved.Furthermore,the long retention time(＞72h)of the MC form under daylight conditions in the CH3CN-removed Cu2I2-based MOF and good repeatability make it promising in various applications,such as temporary calendars,price-cards,billboards,and reusable identity cards.This work provides a novel design strategy to fabricate multi-functional MOF-based smart materials for challenging applications of time-dependent information encryption and inkless erasable printing.
      原文链接:
    • NETL
    • NSTL
    • 万方数据

    Ambient electrocatalytic synthesis of urea by co-reduction of NO3-and CO2 over graphene-supported In2O3

    Yini MaoYong JiangHao LiuYimin Jiang...
    538-543页
    查看更多>>摘要：Urea plays a vital role in the sustainable development of mankind as it is one of the most important nitrogen fertilizers.Conventional synthesis of urea is accompanied by a high level of energy consumption while electrocatalytic methods suffer from low yields and poor selectivity.Our work achieves efficient synthesis of urea by designing the graphene-In2O3 electrocatalysts for the co-activated reduction of ni-trate and carbon dioxide,where the formation rate of urea,Faraday efficiency(FE)and carbon selectivity at-0.35 V vs.RHE can reach 357.47 μg mg-1 h-1,10.46％and～100％,respectively.Herein,the key interme-diates in the C-N coupling reaction are demonstrated to be*NH2 and*CO2,which is of novelty compared to previous reports.This work may provide inspiration for subsequent studies on the reaction mechanism of the electrochemical synthesis of urea,as well as theoretical guidance for the sustainable synthesis of some other important chemical substances.
      原文链接:
    • NETL
    • NSTL
    • 万方数据

    Constructing energetic covalent organic frameworks with high stability and low sensitivity

    Hui-Min GuoXiao-Yu DongShan WangQian-You Wang...
    544-548页
    查看更多>>摘要：Developing new functional explosives that display high stability,good energy performance,and low sen-sitivity are one of the key directions of energetic materials research.In this work,two-dimensional(2D)Schiff-based energetic covalent organic frameworks(COFs)are prepared based on triaminoguanidine salts with different anions as building blocks.Benefiting from the robust covalent bond in 2D extended poly-gons and strong π-π interactions in the eclipsed interlayers,the synthesized energetic COFs showed higher thermal stability and lower mechanical sensitivity than their precursor salts.More importantly,incorporating triaminoguanidine salts into COFs effectively increase the corrosion resistance to metal un-der high humidity conditions,which is due to the imine moieties in COFs functioning as π acceptors and offering strong bonding with metallic ions.This work provides a new pathway for the development of high-performance energetic materials.
      原文链接:
    • NETL
    • NSTL
    • 万方数据

    Incorporation sodium ions into monodisperse lead-free double perovskite Cs2AgBiCl6 nanocrystals to improve optical properties

    Song WangYing XieWenchao JiangBinghang Liu...
    549-553页
    查看更多>>摘要：Lead-free double perovskite nanocrystals(NCs)have emerged as a promising candidate in the optical field,owing to their non-toxic,good moist heat and chemical stability.However,their poor optical proper-ties limited their application.To improve the optical properties of lead-free double perovskite NCs,metal ion doping or alloying had been suggested as a promising strategy.Here,we prepared monodisperse,uniformly sized,cubic morphology of Cs2AgBiCl6 NCs with different Na+incorporation amounts via a simple hot-injection method.The Na+incorporation broke the parity-forbidden transition by reducing the inversion symmetry of the electron wave function at the Ag site,which changed the parity of the self-trapped exciton wave function and thus allowed radiative recombination.As a result,the photolumi-nescence quantum yield(PLQY)of Na+-alloyed Cs2AgBiCl6 NCs(12.1％)was higher than that of Cs2AgBiCl6 NCs(2.4％),and the exciton lifetime of Na+-alloyed Cs2AgBiCl6 NCs increased to 36.98 ns from 17.58 ns for Cs2AgBiCl6 NCs.By adjusting the amount of Na+incorporation,the band gap of Cs2AgBiCl6 NCs can be significantly tuned from～2.90 eV to～3.50 eV.Furthermore,the temperature-dependent photolu-minescence spectra indicated that the Na+-alloyed Cs2AgBiCl6 NCs possessed higher longitudinal optical phonon energy and exciton binding energy compared to Cs2AgBiCl6 NCs.This suggested that there were strong exciton-phonon interactions during exciton recombination,a reduced probability of non-radiative processes,and excellent thermal stability.It offers a promising strategy for improving the optical proper-ties of lead-free double perovskite NCs,and have the potential to replace traditional lead halide perovskite NCs in future optoelectronic applications.
      原文链接:
    • NETL
    • NSTL
    • 万方数据

    Efficient production of ligand-free microscintillators at gram-scale for high-resolution X-ray luminescence imaging

    Hao JiangQihao ChenHongyu WangTingting Wu...
    554-558页
    查看更多>>摘要：The efficient production of high-quality scintillators with long radioluminescence afterglow is crucial for high-performance X-ray luminescence extension imaging.However,scaling-up the synthesis of ligand-free scintillators to fabricate large-area X-ray imaging screens for industrial applications remains a challenge.In this study,we report an efficient method to synthesize ligand-free,lanthanide-doped microscintillators by a one-pot reaction via the concentrated hydrothermal method.The as-synthesized microscintillators exhibit prolonged persistent radioluminescence for up to 30 days after X-ray exposure and remain high stability in air or water for more than 18 months without deterioration.Monte Carlo simulations indi-cate that the size effect is responsible for the excellent afterglow performance of the microscintillators.We employ these high-quality lanthanide-doped microscintillators to fabricate a large-area X-ray imaging detector using a blade-coating method,a spatial resolution of 24.9 lp/mm for X-ray imaging.Our study offers a solution for scaling-up the synthesis of low-cost microscintillators for practical applications.
      原文链接:
    • NETL
    • NSTL
    • 万方数据