Ferrocene(Fc)-containing imidazolium type ionic liquids(ILs) and corresponding poly(ionic liquid)(PIL) membranes with tunable antibacterial activity based on electrochemical redox reaction and host-guest chemistry wer...Ferrocene(Fc)-containing imidazolium type ionic liquids(ILs) and corresponding poly(ionic liquid)(PIL) membranes with tunable antibacterial activity based on electrochemical redox reaction and host-guest chemistry were developed. The effect of Fc moiety on the antimicrobial activities against both Staphylococcus aureus(S. aureus) and Escherichia coli(E. coli) was studied by minimum inhibitory concentration(MIC). The presence of Fc groups highly enhanced the antibacterial efficiency of Fccontaining ILs because of the generation of reactive oxygen species(ROS). The electrochemical oxidation of Fc to Fc+and the formation of inclusion complexes between Fc and β-CD via host-guest interactions decreased the antibacterial activities of ILs and PIL membranes. The antibacterial activities may be recovered in some extent upon the electrochemical reduction of Fc+to Fc or the exclusion of the Fc out of the cavity of β-CD. Furthermore, all the Fc-containing PIL membranes showed relatively low hemolysis activities and none cytotoxicity toward human cells, indicating clinical feasibility in topical applications.展开更多
Copper nanowires （CuNWs） are becoming an indispensable item for next- generation transparent optical devices due to their excellent conductivity and transparency. In this work, ultrathin semicircle-shaped copper nan...Copper nanowires （CuNWs） are becoming an indispensable item for next- generation transparent optical devices due to their excellent conductivity and transparency. In this work, ultrathin semicircle-shaped copper nanowires （SCuNWs） with a diameter of - 15 nm and a length of - 30 μm （aspect ratio of -2,000） were synthesized in ethanol solution. The mechanism and factors that affect the morphology and dispersity of the SCuNWs were investigated. The prepared SCuNWs were coated on polyethylene terephthalate （PET） or polyd- imethylsiloxane （PDMS） substrate to fabricate flexible transparent conductors （FTCs）. The fabricated FTCs exhibited excellent optoelectrical performance and low haze. In addition, the fabricated FTCs showed high mechanical stability during stretching and bending, indicating their great potential in flexible optical devices.展开更多
Poly(ionic liquid)s(PILs)refer to a polymeric architecture with repeating ionic liquid species in each unit.They are attracting rapidly increasing interest because of their diverse structures and facial processability...Poly(ionic liquid)s(PILs)refer to a polymeric architecture with repeating ionic liquid species in each unit.They are attracting rapidly increasing interest because of their diverse structures and facial processability.Our group focused on the design and synthesis of PILs for various applications in the past decade,including polyelectrolytes,biomedical materials,and other related fields.In this review,we briefly summarized our recent studies on the application of PiLs for energy and electronic devices,emphasizing the controllable synthesis and regulation of specific structures and functions.The unique properties and designable structures of PILs will inspire further investigation in an extensive variety of potential applications.展开更多
基金supported by the National Science Foundation for Distinguished Young Scholars(21425417)the National Natural Science Foundation of China(21704071)+4 种基金the Jiangsu Province Science Foundation for Youth(BK20170332)General Program Foundation of Jiangsu Province University Science Research Project(17KJB150033)General Program Foundation of Shanghai Municipal Commission of Health and Family Planning(201740107)the Project Funded by the Priority Academic Program Development of Jiangsu Higher Education InstitutionsScience and Technology Innovation Fund Project of Zhongshan Hospital,Fudan University(2017ZSCX03)
文摘Ferrocene(Fc)-containing imidazolium type ionic liquids(ILs) and corresponding poly(ionic liquid)(PIL) membranes with tunable antibacterial activity based on electrochemical redox reaction and host-guest chemistry were developed. The effect of Fc moiety on the antimicrobial activities against both Staphylococcus aureus(S. aureus) and Escherichia coli(E. coli) was studied by minimum inhibitory concentration(MIC). The presence of Fc groups highly enhanced the antibacterial efficiency of Fccontaining ILs because of the generation of reactive oxygen species(ROS). The electrochemical oxidation of Fc to Fc+and the formation of inclusion complexes between Fc and β-CD via host-guest interactions decreased the antibacterial activities of ILs and PIL membranes. The antibacterial activities may be recovered in some extent upon the electrochemical reduction of Fc+to Fc or the exclusion of the Fc out of the cavity of β-CD. Furthermore, all the Fc-containing PIL membranes showed relatively low hemolysis activities and none cytotoxicity toward human cells, indicating clinical feasibility in topical applications.
基金This work was supported by the National Natural Science Fund for Distinguished Young Scholars （No. 21425417）, the National Natural Science Foundation of China （Nos. 21603156 and 21704071）, Jiangsu Province Science Foundation for Youths （Nos. BK20170331 and BK20170332） and the Project Funded by the Priority Academic Program Development of Jiangsu Higher Education Institutions.
文摘Copper nanowires （CuNWs） are becoming an indispensable item for next- generation transparent optical devices due to their excellent conductivity and transparency. In this work, ultrathin semicircle-shaped copper nanowires （SCuNWs） with a diameter of - 15 nm and a length of - 30 μm （aspect ratio of -2,000） were synthesized in ethanol solution. The mechanism and factors that affect the morphology and dispersity of the SCuNWs were investigated. The prepared SCuNWs were coated on polyethylene terephthalate （PET） or polyd- imethylsiloxane （PDMS） substrate to fabricate flexible transparent conductors （FTCs）. The fabricated FTCs exhibited excellent optoelectrical performance and low haze. In addition, the fabricated FTCs showed high mechanical stability during stretching and bending, indicating their great potential in flexible optical devices.
基金This work was financially supported by the National Natural Science Foundation of China(21835005,U1862109,22005045)Collaborative Innovation Center of Suzhou Nano Science and Technology,the Priority Academic Program,Development of Jiangsu Higher Education Institutions,the Fundamental Research Funds for the Central Universities(2232020D-07)the Initial Research Funds for Young Teachers of Donghua University.
文摘Poly(ionic liquid)s(PILs)refer to a polymeric architecture with repeating ionic liquid species in each unit.They are attracting rapidly increasing interest because of their diverse structures and facial processability.Our group focused on the design and synthesis of PILs for various applications in the past decade,including polyelectrolytes,biomedical materials,and other related fields.In this review,we briefly summarized our recent studies on the application of PiLs for energy and electronic devices,emphasizing the controllable synthesis and regulation of specific structures and functions.The unique properties and designable structures of PILs will inspire further investigation in an extensive variety of potential applications.
