The design of stable,efficient and processable bactericidal materials represents a significant challenge for combating multidrugresistant bacteria in a variety of engineering fields.Herein,we report a facile strategy ...The design of stable,efficient and processable bactericidal materials represents a significant challenge for combating multidrugresistant bacteria in a variety of engineering fields.Herein,we report a facile strategy for the preparation of hollow polymeric nanosphere(HPN)-supported imidazolium-based ionic liquids(denoted as HPN-ILs)with superior antimicrobial activities.HPNILs were tailored by moderate Friedel−Crafts polymerization followed by the sequential covalent bonding of imidazole and bromoalkene.The resultant HPN-ILs have uniform hollow spherical morphology,an adequate surface area,and excellent physicochemical stability.Furthermore,they are highly active against both Gram-positive and Gram-negative bacteria and exhibit typical time/dosage-dependent antibacterial activities.The rational combination of porous HPNs and antibacterial ILs to generate an all-in-one entity may open new avenues for the design and fabrication of efficient bacteriostatic agents.Moreover,HPN-ILs have good biocompatibility and can also be loaded onto diverse matrices,and thus could extend their practical bactericidal application in the potential biomedical-active field.展开更多
The selection of phase change material(PCM)plays an important role in developing high-efficient thermal energy storage(TES)processes.Ionic liquids(ILs)or organic salts are thermally stable,non-volatile,and non-flammab...The selection of phase change material(PCM)plays an important role in developing high-efficient thermal energy storage(TES)processes.Ionic liquids(ILs)or organic salts are thermally stable,non-volatile,and non-flammable.Importantly,researchers have proved that some ILs possess higher latent heat of fusion than conventional PCMs.Despite these attractive characteristics,yet surprisingly,little research has been performed to the systematic selection or structural design of ILs for TES.Besides,most of the existing work is only focused on the latent heat when selecting PCMs.However,one should note that other properties such as heat capacity and thermal conductivity could affect the TES performance as well.In this work,we propose a computer-aided molecular design(CAMD)based method to systematically design IL PCMs for a practical TES process.The effects of different IL properties are simultaneously captured in the IL property models and TES process models.Optimal ILs holding a best compromise of all the properties are identified through the solution of a formulated CAMD problem where the TES performance of the process is maximized.[MPyEtOH][TfO]is found to be the best material and excitingly,the identified top nine ILs all show a higher TES performance than the traditional PCM paraffin wax at 10 h thermal charging time.展开更多
为代替纤维素纸(C-P)基电解质膜用于铝空气电池,利用静电纺丝技术制备了聚吲哚/聚丙烯腈(PIN/PAN)聚合物基电解质膜。采用SEM和FTIR对PIN/PAN纤维表面形貌及化学组成进行了分析。通过电化学工作站和电池测试系统分析了PIN含量对PIN/PAN...为代替纤维素纸(C-P)基电解质膜用于铝空气电池,利用静电纺丝技术制备了聚吲哚/聚丙烯腈(PIN/PAN)聚合物基电解质膜。采用SEM和FTIR对PIN/PAN纤维表面形貌及化学组成进行了分析。通过电化学工作站和电池测试系统分析了PIN含量对PIN/PAN聚合物基电解质膜离子电导率、离子扩散系数及固态铝空气电池放电性能的影响。结果表明,PIN/PAN纤维的孔隙率、吸液率、断裂伸长率与加入的PIN含量有关,同时对碱性溶液具有良好的吸附能力及机械性能,其中,PIN含量(以PAN溶液的质量为基准,其中,溶剂为N,N-二甲基甲酰胺,下同)为4%的PIN/PAN纤维(记为4%PIN/PAN纤维)的吸液率达496%、孔隙率为87.1%、断裂伸长率为8.7%,分别是C-P的3.2、1.1、3.8倍。基于PIN/PAN纤维制备的PIN/PAN聚合物基电解质膜可有效提升固态铝空气电池性能。其中,4%PIN/PAN聚合物基电解质膜在3、5、7 m A/cm^(2)电流密度下,放电时长比C-P铝空气电池分别提升约18%、32%、38%,离子电导率为6.7×10^(–4)S/cm,离子扩散系数为2.69×10^(–8)cm^(2)/S。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 Shanghai Sailing Program(No.21YF1431000)I.K.thanks to the National Research Foundation of Korea grant funded by the Korean government(MSIT)(No.2021R1A2C2003685)for financial support.
文摘The design of stable,efficient and processable bactericidal materials represents a significant challenge for combating multidrugresistant bacteria in a variety of engineering fields.Herein,we report a facile strategy for the preparation of hollow polymeric nanosphere(HPN)-supported imidazolium-based ionic liquids(denoted as HPN-ILs)with superior antimicrobial activities.HPNILs were tailored by moderate Friedel−Crafts polymerization followed by the sequential covalent bonding of imidazole and bromoalkene.The resultant HPN-ILs have uniform hollow spherical morphology,an adequate surface area,and excellent physicochemical stability.Furthermore,they are highly active against both Gram-positive and Gram-negative bacteria and exhibit typical time/dosage-dependent antibacterial activities.The rational combination of porous HPNs and antibacterial ILs to generate an all-in-one entity may open new avenues for the design and fabrication of efficient bacteriostatic agents.Moreover,HPN-ILs have good biocompatibility and can also be loaded onto diverse matrices,and thus could extend their practical bactericidal application in the potential biomedical-active field.
基金the financial support from Max Planck Society,Germany,for the Computer-Aided Material and Process Design(CAMPD)project
文摘The selection of phase change material(PCM)plays an important role in developing high-efficient thermal energy storage(TES)processes.Ionic liquids(ILs)or organic salts are thermally stable,non-volatile,and non-flammable.Importantly,researchers have proved that some ILs possess higher latent heat of fusion than conventional PCMs.Despite these attractive characteristics,yet surprisingly,little research has been performed to the systematic selection or structural design of ILs for TES.Besides,most of the existing work is only focused on the latent heat when selecting PCMs.However,one should note that other properties such as heat capacity and thermal conductivity could affect the TES performance as well.In this work,we propose a computer-aided molecular design(CAMD)based method to systematically design IL PCMs for a practical TES process.The effects of different IL properties are simultaneously captured in the IL property models and TES process models.Optimal ILs holding a best compromise of all the properties are identified through the solution of a formulated CAMD problem where the TES performance of the process is maximized.[MPyEtOH][TfO]is found to be the best material and excitingly,the identified top nine ILs all show a higher TES performance than the traditional PCM paraffin wax at 10 h thermal charging time.
文摘为代替纤维素纸(C-P)基电解质膜用于铝空气电池,利用静电纺丝技术制备了聚吲哚/聚丙烯腈(PIN/PAN)聚合物基电解质膜。采用SEM和FTIR对PIN/PAN纤维表面形貌及化学组成进行了分析。通过电化学工作站和电池测试系统分析了PIN含量对PIN/PAN聚合物基电解质膜离子电导率、离子扩散系数及固态铝空气电池放电性能的影响。结果表明,PIN/PAN纤维的孔隙率、吸液率、断裂伸长率与加入的PIN含量有关,同时对碱性溶液具有良好的吸附能力及机械性能,其中,PIN含量(以PAN溶液的质量为基准,其中,溶剂为N,N-二甲基甲酰胺,下同)为4%的PIN/PAN纤维(记为4%PIN/PAN纤维)的吸液率达496%、孔隙率为87.1%、断裂伸长率为8.7%,分别是C-P的3.2、1.1、3.8倍。基于PIN/PAN纤维制备的PIN/PAN聚合物基电解质膜可有效提升固态铝空气电池性能。其中,4%PIN/PAN聚合物基电解质膜在3、5、7 m A/cm^(2)电流密度下,放电时长比C-P铝空气电池分别提升约18%、32%、38%,离子电导率为6.7×10^(–4)S/cm,离子扩散系数为2.69×10^(–8)cm^(2)/S。
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.
