The tandem catalytic functionalization/carboxylation of double as well as triple carbon-carbon bonds with CO_(2) represent an emerging research area in synthetic organic methodology.In particular,the combination of mi...The tandem catalytic functionalization/carboxylation of double as well as triple carbon-carbon bonds with CO_(2) represent an emerging research area in synthetic organic methodology.In particular,the combination of mild reaction conditions,stoichiometric acceptor/donorless conditions(visible light photoredox catalysis)and chiral catalysts contributed to a rapid development of this intriguing research area capable of creating chemical diversity/complexity from readily available unsaturated hydrocarbons and CO2 as a C1-buinding block.The most recent developments in the field have been collected in the present review article and organized,based on the different sets ofπ-systems/intermediates/reactive partners employed(i.e.,nickelalactones,organo-halides)as well as synthetic strategies(i.e.,visible-light photo redox catalysis).展开更多
Aromatic diimide dyes are an attractive class of redox-active organic molecules for lithium-ion batteries,whose battery performances(stabilities,conductivities and cyclicities) are strongly dependent on the sizes of t...Aromatic diimide dyes are an attractive class of redox-active organic molecules for lithium-ion batteries,whose battery performances(stabilities,conductivities and cyclicities) are strongly dependent on the sizes of their π-systems.However,due to the different Clar’s structures possessed,three vertically7 r-extended aromatic diimides,namely,naphthalene diimide(two one-electron reductions),perylene diimide and terrylene diimide(two one-electron reductions),exhibit different electronic redox mechanisms when served as cathode materials in organic lithium-ion batteries.Herein,we have studied carefully the different electrochemical characteristics of the three aromatic diimides through experimental and theoretical calculations.Their battery present different shape of charge/discharge curves resulting from stability of their reduction state during charge/discharge process.Terrylene diimide shows better cycle and rate capacities than those of naphthalene diimide and perylene diimide,which could be attributed to the more energies released during terrylene diimide combining with lithium ions than those of other two diimides.展开更多
基金Financial support by the National Key Research and Development Program of China(Grants 2017YFA0204503 and 2017YFA0207800)the National Natural Science Foundation of China(Grants 51903187,21734006 and 21975178)the China Postdoctoral Science Foundation(No.2020M670642)is gratefully acknowledged.
文摘The tandem catalytic functionalization/carboxylation of double as well as triple carbon-carbon bonds with CO_(2) represent an emerging research area in synthetic organic methodology.In particular,the combination of mild reaction conditions,stoichiometric acceptor/donorless conditions(visible light photoredox catalysis)and chiral catalysts contributed to a rapid development of this intriguing research area capable of creating chemical diversity/complexity from readily available unsaturated hydrocarbons and CO2 as a C1-buinding block.The most recent developments in the field have been collected in the present review article and organized,based on the different sets ofπ-systems/intermediates/reactive partners employed(i.e.,nickelalactones,organo-halides)as well as synthetic strategies(i.e.,visible-light photo redox catalysis).
基金supported by the National Natural Science Foundation of China (No.21572032)Program for New Century Excellent Talents in Fujian Province University+2 种基金Natural Science Foundation of Fujian Province (Nos.2018J01431 and 2018J01690)the Foundation of Science and Technology on Sanming Institute of Fluorochemical Industry (No.FCIT201706GR)Excellent Youth Exchange Program of China Association for Science and Technology in 2017
文摘Aromatic diimide dyes are an attractive class of redox-active organic molecules for lithium-ion batteries,whose battery performances(stabilities,conductivities and cyclicities) are strongly dependent on the sizes of their π-systems.However,due to the different Clar’s structures possessed,three vertically7 r-extended aromatic diimides,namely,naphthalene diimide(two one-electron reductions),perylene diimide and terrylene diimide(two one-electron reductions),exhibit different electronic redox mechanisms when served as cathode materials in organic lithium-ion batteries.Herein,we have studied carefully the different electrochemical characteristics of the three aromatic diimides through experimental and theoretical calculations.Their battery present different shape of charge/discharge curves resulting from stability of their reduction state during charge/discharge process.Terrylene diimide shows better cycle and rate capacities than those of naphthalene diimide and perylene diimide,which could be attributed to the more energies released during terrylene diimide combining with lithium ions than those of other two diimides.
