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Insertion of pillar[5]arene into Troger’s base-derived porous organic polymer for promoted heterogeneous catalytic performance in Knoevenagel condensation and CO_(2)fixation
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作者 Lu Liu Ziyi Liu +2 位作者 Jingnan Cui guiling ning Weitao Gong 《Chinese Chemical Letters》 SCIE CAS CSCD 2024年第1期482-485,共4页
Development of new metal-free heterogeneous catalysts has long been the focus of intense research interest.The integration of multifunctional monomers into the skeletons of porous organic polymers(POPs)provides an eff... Development of new metal-free heterogeneous catalysts has long been the focus of intense research interest.The integration of multifunctional monomers into the skeletons of porous organic polymers(POPs)provides an efficient pathway to achieve this goal.Herein,we rationally designed and successfully prepared a new Troger’s base(TB)-derived POPs by insertion of pillar[5]arene macrocycle as a positively auxiliary group.Combined the both merits of pillar[5]arene macrocycle and TB moiety,the as-prepared polymer was further explored as an effective metal-free heterogeneous catalyst and exhibited promoted catalytic performance in Knoevenagel condensation and CO_(2)conversion.This work provides a new strategy to fabricate metal-free heterogeneous catalysts based on macrocyclic POPs. 展开更多
关键词 arene macrocycle Porous organic polymers Heterogeneous catalytic Knoevenagel condensation CO_(2)fixation
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Electrospun nanofibrous membranes with antimicrobial activity for air filtration
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作者 Guangyao Wang Zhitong Xu +3 位作者 Ye Qi Yueguang Fang guiling ning Junwei Ye 《Chinese Chemical Letters》 SCIE CAS CSCD 2024年第10期147-157,共11页
Air pollution,including airborne pathogens and particulate matter(PM),has become a prominent issue affecting human health and safety.Conventional air filtration materials do not meet the requirements for efficient PM ... Air pollution,including airborne pathogens and particulate matter(PM),has become a prominent issue affecting human health and safety.Conventional air filtration materials do not meet the requirements for efficient PM capture or do not instantly kill pathogens,leading to increased risk of direct/indirect contact transmission and infection due to the accumulation of pathogens during filtration.Electrospun nanofibrous membranes have emerged as a promising platform due to their rich porous structure,finer fiber diameters,good internal connectivity,and the ability to easily incorporate active chemicals for antimicrobial function.In this review,antimicrobial mechanisms of nanofibrous membranes for air filtration and PM capture mechanisms of nanofibers were firstly investigated,and various types of electrospun nanofibrous membranes with different antimicrobial agents for efficient air filtration were described in detail,including organic antimicrobial agents,inorganic antimicrobial agents and metal-organic frameworks.We hope this work could provide a better practical insight for designing novel electrospun nanofibrous membranes with antimicrobial efficacy for efficient air filtration. 展开更多
关键词 ELECTROSPINNING Nanofibrous membrane ANTIMICROBIAL Particulate matter Airfiltration
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Incorporation of carbazole and boron-containing dye into conjugated microporous polymers with significant aerobic oxidative photocatalysis
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作者 Lu Liu Kaixun Dong +3 位作者 Mehdi Hassan Weitao Gong Jingnan Cui guiling ning 《Green Synthesis and Catalysis》 2022年第4期349-356,共8页
Carbazole-based conjugated microporous polymers(CMPs)as a new type of advanced porous material have created tremendous research curiosities in the area of photocatalysis.Besides,introducing boron-containing dyes into ... Carbazole-based conjugated microporous polymers(CMPs)as a new type of advanced porous material have created tremendous research curiosities in the area of photocatalysis.Besides,introducing boron-containing dyes into the CMPs framework was rare but will be rather promising due to their unique properties,including strong electron-accepting capability,efficient catalytic behaviour,significant absorption coefficient and high quantum.Herein,we rationally designed and prepared two new CMPs,i.e.Cz-BF_(2)-CMP and Cz-BPh2-CMP with the combination of carbazole and boron-containing dye as electron donor and acceptor motifs,respectively.Due to the efficient D-A effect between carbazole and boron-dye which not only accelerated the interfacial charge transfer efficiency but also improved the separation capability of photogenerated electron-hole pairs,both CMPs exhibited excellent photocatalytic performances in organic transformations such as green synthesis of benzimidazole in aqueous solution and aerobic oxidation of thioether in EtOH. 展开更多
关键词 CARBAZOLE Boron-containing dye Conjugated microporous polymers Aerobic oxidative photocatalysis
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Guest induced morphology transitions of star shaped pillar[5]arene trimer via endo host-guest and "exo-wall" electron-transfer interactions 被引量:1
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作者 Wajahat Ali Weitao Gong +3 位作者 Mehdi Hassan Weidong Qu Lu Liu guiling ning 《Chinese Chemical Letters》 SCIE CAS CSCD 2021年第1期371-374,共4页
Star shape bridged pillar[5]arene trimer(C3-PLT) based on benzene-1,3,5-tricarboxamide(BTAs) was successfully synthesized,which exhibited outstanding guest responsive morphology transition properties.The morphology ti... Star shape bridged pillar[5]arene trimer(C3-PLT) based on benzene-1,3,5-tricarboxamide(BTAs) was successfully synthesized,which exhibited outstanding guest responsive morphology transition properties.The morphology tining studies was efficiently achieved with the addition of competitive guest molecules G1 and G2 by various self-assembly mechanisms.C3-PLT itself displays nanofiber morphology through H-type π-π stacking,and this nanofiber morphology can be completely transformed into spherical vesicles by host-guest interaction Gl,while upon addition of G2 into C3-PLT by means of "exo-wall" electron-transfer interactions,sheet superstructures can be observed.SEM,~1 H NMR,DOSY,fluorescence spectroscopy,and viscosity have verified the formation of supramolecular polymers and morphological transitions between C3-PLT with both guests. 展开更多
关键词 arene Supramolecular polymers Host-guest interactions
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