AntiA3typeinfluenza virus activity and toxicity for chick embryo of some heteropoly compounds containing rare earth elements were investigated. The results demonstrate that these heteropoly compounds directly inactiva...AntiA3typeinfluenza virus activity and toxicity for chick embryo of some heteropoly compounds containing rare earth elements were investigated. The results demonstrate that these heteropoly compounds directly inactivate the A3type influenza virus, and the inhibition rate of K15)2]15H2O for the A3type influenza virus is more than 90% with antivirus index TI 69. The result is obviously superior to that of the positive reference drug ribavirin.展开更多
Understanding the relationship between structure and properties is critical to the development of solidstate luminescence materials with desired characteristics and performance optimization. In this work, we elaborate...Understanding the relationship between structure and properties is critical to the development of solidstate luminescence materials with desired characteristics and performance optimization. In this work, we elaborately designed and synthesized a pair of mononuclear iridium(Ⅲ) complexes with similar structures but different degrees of cationization. [Ir2-f][2PF_(6)] with two counterions is obtained by simple Nmethylation of the ancillary ligand of [Ir1-f][PF_(6)] which is a classic cationic iridium(Ⅲ) complex. Such a tiny modification results in tremendously different optical properties in dilute solutions and powders.[Ir1-f][PF_(6)] exhibits weak light in solution but enhanced emission in solid-state as well as poly(methyl methacrylate) matrix, indicative of its aggregation-induced emission(AIE) activity. On the sharp contrary, [Ir2-f][2PF_(6)] is an aggregation-caused quenching(ACQ) emitter showing strong emission in the isolated state but nearly nonemissive in aggregation states. Benefiting from the appealing characteristics of mechanochromic luminescence and AIE behavior, [Ir1-f][PF_(6)] has been successfully applied in reversible re-writable data recording and cell imaging. These results might provide deep insights into AIE and ACQ phenomenon of iridium(Ⅲ) complexes and facilitate the development of phosphorescent materials with promising properties.展开更多
Wetlands have the highest ecosystem service value among all terrestrial eco-systems.Among their ecosystem services,carbon sequestration and its potential ability to mitigate climate change have been extensively discus...Wetlands have the highest ecosystem service value among all terrestrial eco-systems.Among their ecosystem services,carbon sequestration and its potential ability to mitigate climate change have been extensively discussed recently,not only in the academic community but in media during COP27 of UNFCCC and COP14 of Ramsar.In particular,peatlands-peat-accumulating wetlands-accumulate 600 Gt C globally.展开更多
Halide perovskite nanocrystals are potential catalysts for CO_(2) photoreduction,while,the strong radiative recombination and insufficient stability limit their catalytic performance and application.Herein,we report t...Halide perovskite nanocrystals are potential catalysts for CO_(2) photoreduction,while,the strong radiative recombination and insufficient stability limit their catalytic performance and application.Herein,we report that layered double hydroxide nanosheets activate CsPbBr_(3) nanocrystals(CLDH)for enhanced photocatalytic CO_(2) reduction.These CLDH heterojunctions show the remarkably enhanced CO_(2) photoreduction performance;without cocatalyst and sacrificial agent,the average electron consumption rate of CLDH(49.16μmol·g^(−1)·h^(−1))is approximately 3.7 times higher than that of pristine CsPbBr_(3).Also,CLDH catalyst exhibits a robust stability after ten cycles over 30 h.展开更多
文摘AntiA3typeinfluenza virus activity and toxicity for chick embryo of some heteropoly compounds containing rare earth elements were investigated. The results demonstrate that these heteropoly compounds directly inactivate the A3type influenza virus, and the inhibition rate of K15)2]15H2O for the A3type influenza virus is more than 90% with antivirus index TI 69. The result is obviously superior to that of the positive reference drug ribavirin.
基金financial support from the National Natural Science Foundation of China(Nos.22175033 and 51902124).
文摘Understanding the relationship between structure and properties is critical to the development of solidstate luminescence materials with desired characteristics and performance optimization. In this work, we elaborately designed and synthesized a pair of mononuclear iridium(Ⅲ) complexes with similar structures but different degrees of cationization. [Ir2-f][2PF_(6)] with two counterions is obtained by simple Nmethylation of the ancillary ligand of [Ir1-f][PF_(6)] which is a classic cationic iridium(Ⅲ) complex. Such a tiny modification results in tremendously different optical properties in dilute solutions and powders.[Ir1-f][PF_(6)] exhibits weak light in solution but enhanced emission in solid-state as well as poly(methyl methacrylate) matrix, indicative of its aggregation-induced emission(AIE) activity. On the sharp contrary, [Ir2-f][2PF_(6)] is an aggregation-caused quenching(ACQ) emitter showing strong emission in the isolated state but nearly nonemissive in aggregation states. Benefiting from the appealing characteristics of mechanochromic luminescence and AIE behavior, [Ir1-f][PF_(6)] has been successfully applied in reversible re-writable data recording and cell imaging. These results might provide deep insights into AIE and ACQ phenomenon of iridium(Ⅲ) complexes and facilitate the development of phosphorescent materials with promising properties.
基金supported by the Second Tibetan Plateau Scientific Expedition(2019QZKK0304)the Strategic Priority Research Program of Chinese Academy of Sciences(XDA2005010404).
文摘Wetlands have the highest ecosystem service value among all terrestrial eco-systems.Among their ecosystem services,carbon sequestration and its potential ability to mitigate climate change have been extensively discussed recently,not only in the academic community but in media during COP27 of UNFCCC and COP14 of Ramsar.In particular,peatlands-peat-accumulating wetlands-accumulate 600 Gt C globally.
基金supported by National Key Basic Research Program of China(Nos.2020YFA0406104 and 2020YFA0406101)National MCF Energy R&D Program(No.2018YFE0306105)+5 种基金Innovative Research Group Project of the National Natural Science Foundation of China(No.51821002)National Natural Science Foundation of China(Nos.51725204,21771132,21471106,and 51972216)Natural Science Foundation of Jiangsu Province(No.BK20190041)Natural Science Foundation of Jiangsu Province-Excellent Youth Foundation(No.BK20190102)Key-Area Research and Development Program of GuangDong Province(No.2019B010933001)Collaborative Innovation Center of Suzhou Nano Science&Technology,the Priority Academic Program Development of Jiangsu Higher Education Institutions(PAPD),the 111 Project,and Suzhou Key Laboratory of Functional Nano&Soft Materials.
文摘Halide perovskite nanocrystals are potential catalysts for CO_(2) photoreduction,while,the strong radiative recombination and insufficient stability limit their catalytic performance and application.Herein,we report that layered double hydroxide nanosheets activate CsPbBr_(3) nanocrystals(CLDH)for enhanced photocatalytic CO_(2) reduction.These CLDH heterojunctions show the remarkably enhanced CO_(2) photoreduction performance;without cocatalyst and sacrificial agent,the average electron consumption rate of CLDH(49.16μmol·g^(−1)·h^(−1))is approximately 3.7 times higher than that of pristine CsPbBr_(3).Also,CLDH catalyst exhibits a robust stability after ten cycles over 30 h.
