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Recent progress on photoactive nonprecious transition-metal complexes

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Science China Chemistry 2025年第1期68卷 46-95页

作者： Zhong-Liang Gong Hong-jie zhang Yan Cheng Jianxun Liu Yuhan Ai Yaqin Li Zhihui Feng Qiong zhang Shaolong Gong Yong Chen Chang-Jiang Yao Yuan-Yuan Zhu Liang-Jin Xu Yu-Wu Zhong CAS Key Laboratory of Photochemistry Institute of Chemistry Chinese Academy of Sciences State Key Laboratory of Structural Cemistry Fujian Institute of Research on the Structure of Matter Chinese Academy of Sciences School of Chemistry and Chemical Engineering Anhui Key Laboratory of Advanced Catalytic Materials and Reaction EngineeringHefei University of Technology State Key Laboratory of Explosion Science and Safety Protection School of Mechatronical Engineering Beijing Institute of Technology College of Chemistry and Molecular Sciences Hubei Key Lab on Organic and Polymeric Optoelectronic Materials Wuhan University School of Chemistry and Chemical Engineering Anhui University Key Laboratory of Photochemical Conversion and Optoelectronic Materials & CAS-HKU Joint Laboratory on New Materials Technical Institute of Physics and Chemistry Chinese Academy of Sciences

Photoactive complexes of nonprecious transition metals, mainly including those in the first-row and partially the second-row of the Periodic table of elements, have received increasing attention in view of their low cost and long-term sustainability. They are recognized as promising alternatives to noble transition metal complex congeners that have been extensively studied in optoelectronic devices, artificial photosynthesis, photocatalysis, biodiagnostics, and therapeutics, etc. This review is devoted to a comprehensive summary on the classical and recent advances on photoactive nonprecious transition metal complexes, including photoactive Zr, V, Cr, Mo, and W complexes, Mn complexes and hybrids, Fe, Co, Ni, and Cu complexes, and Zn and Cd complexes and hybrids. A particular focus is given on the molecular design, modulation of photophysical and photochemical properties, and applications of the representative and lately-developed nonprecious metal complexes. In addition, a perspective on the future development in this field is provided at the end of this review.

关键词： photoactive metal complexes earth-abundant metals nonprecious metal complexes luminescence photochemistry

Nanoimprint lithography-assisted block copolymer self-assembly for hyperfine fabrication of magnetic patterns based on L10-FePt nanoparticles

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Science China Chemistry 2025年

作者： jie zhang Yi Chen Guijun Li Zelin Sun Zhengong Meng Wai-Yeung Wong Department of Applied Biology and Chemical Technology and Research Institute for Smart Energy The Hong Kong Polytechnic University The Hong Kong Polytechnic University Shenzhen Research Institute Division of Integrative Systems and Design and Department of Electronic and Computer Engineering The Hong Kong University of Science and Technology School of Flexible Electronics (Future Technology) and Institute of Advanced Materials (IAM) Nanjing Tech University

L10-FePt-type bit-patterned media has provided a promising alternative for ultrahigh-density magnetic recording systems in the current digital era, but rapid fabrication of magnetic patterns with hyperfine bit islands is still challenging, especially with the target for miniaturization and scalable production simultaneously. Herein, Fe,Pt-containing block copolymers were utilized as single-source precursors for solution-processable patterning and subsequent generation of the demanding magnetic FePt dots by in situ pyrolysis. High-throughput nanoimprint lithography was initially employed to fabricate the predefined bit cells precisely,and then the intrinsic self-assembly of phase-separated block copolymers further drove the formation of accurate bit *** from the synergistic effect of top-down lithographic approach and bottom-up self-assembly, the customizable patterns could be achieved for large-scale mass production in targeted areas, but high-density isolated dots could also be accurately aligned along the patterned features after subsequent self-assembly. This reliable strategy would provide a good avenue to precisely construct ultrahigh-density magnetic data storage devices.

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Printing perovskite and graphene parallel structure-based optical-mechanical sensors for human-machine interaction

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Science China Technological Sciences 2025年

作者： Sisi CHEN jiemin zhang Nan CHENG Wenbo LI Jing LIU Hongfei XIE jie zhang Yueying CHENG Xiaotong ZHAO Meng SU Yanlin SONG Key Laboratory of Green Printing CAS Research/Education Center for Excellence in Molecular Sciences Institute of ChemistryChinese Academy of Sciences (ICCAS) University of Chinese Academy of Sciences Weiyang College Tsinghua University Department of Cardiovascular Surgery First Medical Center PLA General Hospital AECC Beijing Institute of Aeronautical Materials Beijing Institute of Graphene Technology Beijing Engineering Research Centre of Graphene Application School of Integrated Circuit & Beijing National Research Center for Information Science and Technology (BNRist) Tsinghua University

Surgical robots are designed to provide enhanced precision and dexterity compared to manual surgical procedures,which mainly rely on multimodal sensing technologies for the surgeon to seamlessly operate the robotic arms and *** with single-mode sensors, optical and mechanical bi-modal sensors provide improved precision, enhanced safety,and robustness of human-machine interaction systems. Here, the template-guided and pneumatic printing technologies are combined to construct perovskite and graphene parallel structures with both optical and mechanical sensing capabilities. The printed uniformly crystallized perovskite microstructure exhibits fast and sensitive photoelectric response characteristics,enabling shadow recognition functionality. The combination of graphene and elastic rubber endows the great printability to prepare parallel structures near the perovskite arrays for force sensing capabilities. Thus, the printed perovskite and graphene structures possess non-contact optical sensing capabilities to detect hand position by recognizing shadows between the hand and the sensor, as well as contact mechanical sensing capabilities to detect touch force applied by the hand. It provides a synergistic platform for real-time and multidimensional feedback to improve human-machine interaction.

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Preparation, characterization and application of thiosemicarbazide grafted multiwalled carbon nanotubes for solid-phase extraction of Cd(II),Cu(II) and Pb(II) in environmental samples

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Journal of Environmental Sciences 2013年第11期25卷 2331-2337页

作者： jie zhang College of Environmental Science and Engineering Tongji University

Thiosemicarbazide-grafted multi-walled carbon nanotubes were prepared and employed to investigate the pre-concentration of Cd（Ⅱ）, Cu（Ⅱ） and Pb（Ⅱ） from aqueous solution prior to their determination by ICP-OES. The resulting material was characterized by FT-IR, TGA and SEM. Various factors influencing the separation and pre-concentration were investigated. The enrichment factor typically is 60. Under optimized experimental conditions, the maximum adsorption capacities of Cd（Ⅱ）, Cu（Ⅱ） and Pb（Ⅱ） were found to be 1.98, 10.94, 3.69 mg/g, and the relative standard deviations are 〈 3.5% （n = 6）. The new adsorbent shows superior reusability and stability. The procedure was successfully applied to the determination of trace quantities of Cd（Ⅱ）, Cu（Ⅱ） and Pb（Ⅱ） in water samples.

关键词： multiwalled carbon nanotubes solid-phase-extraction preconcentration heavy metal ions

川陈皮素通过激活囊性纤维化跨膜传导调节因子(CFTR)治疗小鼠2型糖尿病干眼的实验研究

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眼科新进展 2025年第1期45卷 15-21页

作者：王珏张婕王卓欣张鑫苏丽萍空军军医大学第二附属医院眼科陕西省西安市710038 空军军医大学第二附属医院军队人员医疗保健中心陕西省西安市710038 西安爱尔古城眼科医院眼科陕西省西安市710014

目的探究川陈皮素(NOB)治疗2型糖尿病干眼(T2DM-DE)的潜在价值及其对囊性纤维化跨膜传导调节因子(CFTR)表达的影响。方法通过高脂饮食联合链脲佐菌素建立T2DM小鼠模型,然后采用苯扎氯铵诱导T2DM-DE小鼠模型。将小鼠分为6组:对照组(正常... 详细信息

目的探究川陈皮素(NOB)治疗2型糖尿病干眼(T2DM-DE)的潜在价值及其对囊性纤维化跨膜传导调节因子(CFTR)表达的影响。方法通过高脂饮食联合链脲佐菌素建立T2DM小鼠模型,然后采用苯扎氯铵诱导T2DM-DE小鼠模型。将小鼠分为6组:对照组(正常小鼠)、T2DM-DE组、L-NOB组、M-NOB组、H-NOB组和CFTR抑制剂组,后5组建立T2DM-DE模型。对照组和T2DM-DE组小鼠灌胃含体积分数0.5%吐温80的PBS,L、M、H-NOB组小鼠分别灌胃剂量为50、100、200 mg·kg^(-1)·d^(-1)的NOB溶液,CFTR抑制剂组小鼠灌胃200 mg·kg^(-1)·d^(-1)的NOB溶液的同时腹腔注射1 mg·kg^(-1)·d^(-1)的CFTR(inh)-172,均给药4周。分别检测小鼠空腹血糖(FPG)、泪液分泌量、泪膜破裂时间(BUT)、角膜荧光素钠染色分级、泪液中白细胞介素(IL)-1β、IL-6、IL-8和肿瘤坏死因子-α(TNF-α)水平。分别进行小鼠结膜杯状细胞PAS染色和角膜TUNEL染色。采用RT-qPCR和Western blot检测小鼠角膜CFTR、Bax和Bcl-2的mRNA和蛋白表达水平。结果与对照组比较,T2DM-DE组小鼠的FPG升高,泪液中IL-1β、IL-6、IL-8和TNF-α水平升高,角膜荧光素钠染色分级和TUNEL染色阳性细胞率均升高(均为P<0.05);泪液分泌量、BUT和结膜杯状细胞数量均降低,CFTR的mRNA和蛋白相对水平均降低(均为P<0.05)。与T2DM-DE组比较,L-NOB组、M-NOB组和H-NOB组小鼠的FPG降低,泪液中IL-1β、IL-6、IL-8和TNF-α水平降低,角膜荧光素钠染色分级和TUNEL染色阳性细胞率均降低(均为P<0.05);泪液分泌量、BUT和结膜杯状细胞数量均升高,CFTR的mRNA和蛋白相对水平均升高(均为P<0.05)。与H-NOB组比较,CFTR抑制剂组的FPG升高,泪液中IL-1β、IL-6、IL-8和TNF-α水平升高,角膜荧光素钠染色分级和TUNEL染色阳性细胞率均升高(均为P<0.05);泪液分泌量、BUT和结膜杯状细胞数量均降低,CFTR的mRNA和蛋白相对水平均降低(均为P<0.05)。结论NOB通过激活CFTR降低T2DM-DE小鼠血糖水平,抑制炎症反应,促进结膜杯状细胞和角膜细胞存活,从而发挥治疗T2DM-DE的作用。

关键词： 2型糖尿病干眼川陈皮素囊性纤维化跨膜传导调节因子血糖炎症结膜杯状细胞角膜细胞

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A hybrid artificial photosynthesis system with molecular catalysts covalently linked onto TiO2 as electron relay for efficient photocatalytic hydrogen evolution

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Journal of Materials Science & Technology 2020年第15期47卷 147-152页

作者： jie zhang Gehong zhang Jing zhang School of Civil and Architecture Engineering Xi'an Technological UniversityXi'an710021China

Efficient charge carrier transfer from light harvesters to catalysts greatly determines the photocatalytic activity in an artificial photosynthesis(AP) system for solar hydrogen *** this study,an AP system composed of xanthene dye as light harvester and cobaloxime molecular complex as catalyst,with TiO2 as electron relay,was designed for photocatalytic hydrogen evolution under visible light(λ>420 nm).It was demonstrated that with cobaloxime molecule covalently linked onto the TiO2 electron relay,the resulting hybrid AP system exhibited much increased photocatalytic activity as compared to that without *** greatly increased photocatalytic activity should be due to the efficient electron transfer from xanthene dye as light harvester and cobaloxime molecular complex as catalyst,shuttled by the TiO2 electron relay,for the following water reduction *** present study demonstrates a facile and feasible strategy to guide the design of high performance AP systems through the electron relay shuttled and promoted cha rge transfer process.

关键词： Artificial photosynthesis Molecular catalysts Electron relay Photocatalytic hydrogen evolution

Practical Exponential Stability of Two Dimensional Nonlinear Switched Positive Systems in the Roesser Model

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Journal of Systems Science & Complexity 2023年第3期36卷 1103-1115页

作者： zhang jie SUN Yuangong School of Mathematical Sciences University of JinanJinan 250022China

This paper deals with the practical exponential stability of two-dimensional(2-D)nonlinear switched positive systems with impulse,disturbance and all modes *** the mode-dependent interval dwell time switching,new criteria such that 2-D nonlinear switched positive systems achieve practical exponential stability are ***,the explicit upper bound and convergence rate of the system state are estimated *** examples indicate the correctness and effectiveness of the obtained results.

关键词： Disturbance impulse mode-dependent interval dwell-time(MDIDT)switching practical exponential stability roesser model

Electrochemical transformation of biomass-derived oxygenates

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Science China Chemistry 2023年第4期66卷 1011-1031页

作者： Peng Zhou jie zhang School of Chemistry Monash UniversityClaytonVictoria 3800Australia

Replacing conventional fossil resources with renewable raw materials for chemical production and energy generation is crucial for achieving the carbon-neutral goal and alleviating the emerging energy *** has been considered as one of the most promising candidates for this purpose owing to its great natural abundance and inherent ability to fix CO_(2) in the form of multicarbon ***,biomass conversion through an electrochemical route is intriguing because of its operability near ambient conditions,flexible scalability(suitable for distributed manufacturing and even domestic use)and green generation of oxidative or reductive equivalents instead of wasteful and possibly explosive or flammable ***,recent progress in electrochemical transformation of biomass,including hydrogenation and amination,is reviewed with the emphasis on catalysts and strategies for enhancing catalytic *** advances in mechanistic understanding using in-situ spectroscopy are also briefly ***,recommendations for the directions for future development are also provided.

关键词： biomass utilization electrochemical hydrogenation reductive amination catalyst in-situ spectroscopy mechanism

The de-excited energy of electron capture in accreting neutron star crusts

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Research in Astronomy and Astrophysics 2015年第9期15卷 1483-1492页

作者： jie zhang Institute of Theoretical Physics China West Normal University

When a daughter nucleus produced by electron capture takes part in a level transition from an excited state to its ground state in accreting neutron star crusts, ther- mal energy will be released and heat the crust, increasing crust temperature and chang- ing subsequent carbon ignition conditions. Previous studies show that the theoretical carbon ignition depth is deeper than the value inferred from observations because the thermal energy is not sufficient. In this paper, we present the de-excited energy from electron capture of rp-process ash before carbon ignition, especially for the initial evo- lution stage of rp-process ash, by using a level-to-level transition method. We find the theoretical column density of carbon ignition in the resulting superbursts and compare it with observations. The calculation of the electron capture process is based on a more reliable level-to-level transition, adopting new data from experiments or theo- retical models （e.g., large-scale shell model and proton-neutron quasi-particle random phase approximation）. The new carbon ignition depth is estimated by fitting from previous results of a nuclear reaction network. Our results show the average de-excited energy from electron capture before carbon ignition is -0.026 MeV/u, which is significantly larger than the previous results. This energy is beneficial for enhancing the crust＇s temperature and decreasing the carbon ignition depth of superbursts.

关键词： stars: neutrons -- nuclear reactions -- nucleosynthesis -- abundances