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Recent advancements of photo-and electro-active hydrogenbonded organic frameworks

Science China Chemistry 2022年第11期65卷 2077-2095页

作者： Xiangyu Gao Wanyue Lu Yao Wang Xiyu Song Cheng Wang kent o.kirlikovali Peng Li Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials Department of ChemistryFudan UniversityShanghai 200438China Department of Chemistry and International Institute of Nanotechnology Northwestern UniversityEvanstonIlinois 60208United States

The development of hydrogen-bonded organic frameworks(HoFs) with predictable topologies and robust structures for targeted functionality was initially hindered by the relatively weak H-bonding interactions as many HoFs would collapse upon guest solvent removal. Recently, the design of tectons with large π-conjugated systems that form intermolecular shape-fitted π-πstacking interactions has proven to be an effective strategy to create chemically and thermally stable HoFs. More importantly,these HoFs with large π-conjugated tectons exhibit accelerated redox hopping processes due to more favorable through-space orbital overlap interactions. These intrinsic photoelectric properties render HoFs an appealing and unique class of photoactive and electroactive porous materials for catalysis, sensing, and biomedical applications. Based on shape-fitted π-π stacking strategy, various robust photoactive and electroactive HoFs have been built from tectons containing both photosensitive or redox-active organic cores and hydrogen bonding sites. This review summarizes the recent advancements, including synthetic methods and diverse applications, in the development of photo-and electro-active HoFs. Considering the numerous photo-and electro-active organic units available, as well as the virtually unlimited potential combinations of organic cores and hydrogen bonding sites, we anticipate that this review will inspire scientists in a range of disciplines, ranging from porous materials to organic photoelectric materials and catalysis scientists, to further explore functional photo-and electro-active HoF materials.

关键词： hydrogen-bonded organic frameworks photo-active electro-active HoF materials

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Protection against Chemical Warfare Agents and Biological Threats Using Metal−organic Frameworks as Active Layers

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Accounts of Materials Research 2023年第2期4卷 168-179页

作者： Kaikai Ma Yuk Ha Cheung kent o.kirlikovali Xiaoliang Wang Timur Islamoglu John H.Xin omar K.Farha International Institute for Nanotechnology Institute for Sustainability and Energy at Northwesternand Department of ChemistryNorthwestern UniversityEvanstonIllinois 60208United States Research Centre for Smart Wearable Technology School of Fashion and TextilesThe Hong Kong Polytechnic UniversityKowloon 999077 Hong Kong SARP.R.China

The SARS-CoV-2 pandemic outbreak and the unfortunate misuse of toxic chemical warfare agents(CWAs)highlight the importance of developing functional materials to protect against these chemical and pathogen ***−organic frameworks(MoFs),which comprise a tunable class of crystalline porous materials built from inorganic nodes and organic linkers,have emerged as a class of heterogeneous catalysts capable of rapid detoxification of multiple classes of these harmful chemical or biological *** particular,zirconium-based MoFs(Zr-MoFs)feature Lewis acidic nodes that serve as active sites for a wide range of catalytic reactions,including the hydrolysis of organophosphorus nerve agents within seconds in basic aqueous *** addition,postsynthetic modification of Zr-MoFs enables the release of active species capable of reacting with and deactivating harmful *** this impressive performance,utilizing Zr-MoFs in powder form is not practical for application in masks or protective *** address this challenge,our team sought to develop MoF/fiber composite systems that could be adapted for use under realistic operating conditions to protect civilians,military personnel,and first responders from harmful pathogens and chemical warfare *** the last several years,our group has designed and fabricated reactive and biocidal MoF/fiber composites that effectively capture and deactivate these toxic *** this Account,we describe the evolution of these porous and reactive MoF/fiber composites and focus on key design challenges and ***,we devised a scalable method for the integration of Zr-MoFs onto textile substrates using aqueous precursor solutions and without using pretreated textiles,highlighting the potential scalability of this *** beyond standard textiles,we also developed a microbial synthesis strategy to prepare hierarchically porous MoF/bacterial cellulose nanofiber composite sponges that can both captu

关键词： composites protective porous

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