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Methods to Make Conductive Covalent Organic Frameworks for Electrocatalytic Applications

Chinese Journal of Structural Chemistry 2022年第12期41卷 107-119页

作者： Mengyang Chen Ye Zhou Shi-Bin Ren Jiong Wang School of Pharmaceutical and Materials engineering Taizhou UniversityTaizhou 317000China Innovation Center for Chemical Sciences College of ChemistryChemical Engineering and Materials ScienceSoochow UniversitySuzhou 215123China State Key Laboratory of Inorganic Synthesis and Preparative Chemistry College of ChemistryJilin UniversityChangchun 130012China

Covalent organic frameworks(COFs) represent a new class of crystalline organic polymer materials with the characteristics of high specific surface area, uniform pore distribution, high porosity, low density, devisable chain structures and good structural stability. These collective features play an important role in creating highly efficient electrocatalysts for energy conversion and fuel generation. Recent years have witnessed considerable advances in COF-based electrocatalysts for major electrocatalytic reactions such as oxygen reduction, oxygen evolution, hydrogen evolution, and reduction of carbon dioxide and nitrogen. However, it has been widely accepted that the poor electrical conductivity of most pristine COFs limits the further progress in electrocatalytic field. In this review, recent structural engineering strategies are summarized toward improving the electrical conductivity of COFs for achieving high performance. The researches of conductive COFs and their derivatives are described in detail. The structure-activity relationship between molecular structures of COFs and their electrocatalytic performance is emphasized. Lastly, current challenges and future perspectives on fabricating COFs as promising electrocatalysts are discussed. The purpose of this review is to provide guidelines for the preparation of highly efficient COF-based electrocatalytic materials with a view to replacing the commercially available noble metal-based electrocatalysts.

关键词： COFs electrocatalyst electrocatalytic reactions engineering strategies electrical conductivity

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engineering of electrospun nanofiber scaffolds for repairing brain injury

再生工程(英文)

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再生工程(英文) 2023年第3期4卷 289-303页

作者： Wenzhe Du Tong Wang Shuyun Hu Jixin Luan Feng Tian Guolin Ma Jiajia Xue State Key Laboratory of Organic-Inorganic Composites Beijing University of Chemical TechnologyBeijing 100029PR China Beijing Laboratory of Biomedical Materials Beijing University of Chemical TechnologyBeijing 100029PR China Department of Radiology China-Japan Friendship HospitalNo.2 East Yinghua RoadChaoyang DistrictBeijing 100029PR China

Patients with brain injury can suffer disability and accompanying complications.Current clinical treatments have significant limitations to successful repair due to the complexity of the pathological processes and the inhibitory microenvironment that follows brain injury.Here,we conclude recent research progresses in engineering strate-gies based on electrospun nanofibers for promoting neural repair and functional recovery after brain injury.Firstly,we introduce the main pathological mechanisms of current brain injuries,pointing out the prospect of the application of electrospun nanofiber scaffolds compared to current clinical treatment strategies.We then discuss the repair strategies combining the structure and the morphology of nanofiber scaffolds with load therapeutic factors such as cells,drugs and growth factors.All of these strategies show potential for improving the repair of brain injury.Finally,we point out the challenges facing the effective treatment of brain injury,aiming to provide insights into the development of repairing scaffolds for brain function recovery from the perspective of clinical treatment.

关键词： Electrospun nanofibers Brain injury engineering strategies Neural repair Functional recovery

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Engineered microorganisms-based delivery systems for targeted cancer therapy:a narrative review

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Biomaterials Translational 2022年第3期3卷 201-212页

作者： Xin Huang Haoyu Guo Lutong Wang Zengwu Shao Department of Orthopaedics Union HospitalTongji Medical CollegeHuazhong University of Science and TechnologyWuhanHubei ProvinceChina

Microorganisms with innate and artificial advantages have been regarded as intelligent drug delivery systems for cancer therapy with the help of engineering technology.Although numerous studies have confirmed the promising prospects of microorganisms in cancer,several problems such as immunogenicity and toxicity should be addressed before further clinical applications.This review aims to investigate the developments of engineered microorganisms-based delivery systems for targeted cancer therapy.The main types and characteristics of microorganisms such as bacteria,viruses,fungi,microalgae,and their components are introduced in detail.Moreover,the engineering strategies and biomaterials design of microorganisms are further discussed.Most importantly,we discussed the innovative attempts and therapeutic effects of engineered microorganisms in cancer.Taken together,engineered microorganisms-based delivery systems hold tremendous prospects for biomedical applications in targeted cancer therapy.

关键词： drug delivery systems engineering strategies microorganisms targeted cancer therapy

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