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Cellulose-based hydrogels regulated by supramolecular chemistry

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SusMat 2021年第2期1卷 266-284页

作者： Danning Hu Min Zeng Yafei Sun Jinying Yuan Yen Wei Department of chemistry Key Lab of Bioorganic Phosphorus Chemistry&Chemical BiologyTsinghua UniversityBeijingP.R.China Department of chemistry Key Lab of Organic Optoelectronics and Molecular Engineering of Ministry of EducationTsinghua UniversityBeijingP.R.China Department of chemistry Center for Nanotechnology and Institute of Biomedical TechnologyChung-Yuan Christian UniversityChung-LiTaiwanP.R.China

supramolecular hydrogels based on cellulose attract increasing attention because of their novel structures and broad potential *** this review,hydrogels composed of cellulose are summarized according to category of supramolecular interactions in the networks including hydrogen bonds,electrostatic interactions,host-guest interactions,and *** cellulose-based hydrogels constructed by noncovalent bonding usually exhibit environmental friendliness,designing flexibility and diverse functions,and their properties are variable with incorporating different interactions in hydrogel ***,with proper structures and networks,the supramolecular cellulose-based hydrogels are adaptable in diverse fields of research and practical applications,such as self-healing,shape memory,drug delivery,and some other renewable/sustainable *** future developments and challenges of the supramolecular hydrogels based on cellulose are discussed as well.

关键词： cellulose hydrogels noncovalent bonds self-healing shape memory supramolecular chemistry

Interplay of supramolecular chemistry and Photochemistry with Palladium-Catalyzed Ethylene Polymerization

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CCS chemistry 2021年第7期3卷 2025-2034页

作者： Guohong Wang Dan Peng Yao Sun Changle Chen CAS Key Laboratory of Soft Matter chemistry Hefei National Laboratory for Physical Sciences at the MicroscaleDepartment of Polymer Science and EngineeringUniversity of Science and Technology of ChinaHefei 230026

Metal–metal cooperativity effects have been extensively explored in olefin polymerization,along with the design and preparation of many binuclear transition metal ***,their synthesis and the tuning of metal–metal distance are complicated and *** this contribution,a supramolecular chemistry strategy was used to construct multinuclear olefin polymerization *** functional groups were installed into severalα-diimine palladium catalysts to enable hydrogenbonding-induced self-assembly.

关键词： ethylene polymerization polyolefin supramolecular chemistry photochemistry palladium

supramolecular flow chemistry: Construction of multiscale supramolecular assemblies by micro/nanofluidic techniques

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Chinese Chemical Letters 2024年第1期35卷 95-107页

作者： Leyong Zhou Changyin Yang Weitao Dou Tongxia Jin Haibo Yang Lin Xu Shanghai Key Laboratory of Green chemistry and Chemical Processes Shanghai Frontiers Science Center of Molecule Intelligent SynthesesSchool of Chemistry and Molecular EngineeringEast China Normal UniversityShanghai 200062China

The rapid and precise fabrication of multiscale supramolecular assemblies using micro/nanofluidic techniques has emerged as a dynamic area of research in supramolecular chemistry, materials chemistry, and organic chemistry. This review summarizes the application of micro/nanofluidic techniques in constructing supramolecular assemblies, including nanoscale supramolecular assemblies such as macrocycles and cages, microscale supramolecular assemblies such as metal organic frameworks (MOFs) and covalent organic frameworks (COFs), and macroscale supramolecular assemblies such as supramolecular hydrogels. Compared to conventional synthesis methods, micro/nanofluidic techniques for the production of supramolecular assemblies have significant advantages, including enhanced safety, high reaction rates, improved selectivity/yield, and scalability. Additionally, micro/nanofluidic systems facilitate the creation of precisely controllable micro/nanoconfined environments, allowing for a unique flow behavior that improves our understanding of the supramolecular self-assembly process. Such systems may also lead to the development of novel supramolecular assemblies that differ from those generated via traditional methods.

关键词： supramolecular chemistry Self-assembly Micro nanofluidics technique supramolecular flow chemistry supramolecular assemblies

supramolecular Radical Switches Regulated by Host-Guest chemistry

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Chinese Journal of chemistry 2022年第21期40卷 2568-2574页

作者： Yu-Yuan Ye Zi-Xin Wang Shi-Yuan Xu Xiao-Wei Lin Jie Luo Wen-Zhen Li Xiao-Qiang Wang Schoolof chemistry and Chemical Engineering Wuhan Universityof Science and TechnologyWuhanHubei 430081China

Water-soluble thermal initiators are important radical sources to be applied in various ***,the uncontrolled radical generation from the high sensitivity of initiators may cause disadvantages in the ***,we present a series of supramolecular radical switches regulated by the host-guest chemistry between initiators and cucurbit[8]uril(CB[8]).Thermal initiators(VA-044,VA-056,VA-057)can be spontaneously encapsulated into the cavity of CB[8]to“turn off”their radical-generation *** activity will instantaneously“turn on”in the presence of other competitors such as 1-adamantylamine(ADA).Further,we demonstrated the free radical polymerization of N-isopropylacrylamide using initiators,inhibiting its activity by binding with CB[8]and initiating reaction by adding *** novel supramolecular radical switches provide a facile strategy to control the generation of free radicals in a“plug-and-play”manner,which may arouse research interests in polymerization,catalysis,and the biomedical field.

关键词： supramolecular chemistry Cucurbituril Azo compound Radicals Radical switch

Luminescent terpyridine-based metallo-supramolecular systems:from design to applications

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Science China chemistry 2023年第7期66卷 1940-1962页

作者： Chenxing Guo Feng Su Pingru Su Xiujun Yu Xiaopeng Li College of chemistry and Environmental Engineering Shenzhen UniversityShenzhen 518060China Guangdong Key Laboratory for Biomedical Measurements and Ultrasound Imaging National-Regional Key Technology Engineering Laboratory for Medical UltrasoundSchool of Biomedical EngineeringShenzhen University Medical SchoolShenzhen 518060China Shenzhen University General Hospital Shenzhen University Clinical Medical AcademyShenzhen 518055China

Luminescent metallo-supramolecules have received tremendous attention in recent years owing to their diverse yet well-defined structures,tunable luminescent properties,and broad *** this context,the development of terpyridine(tpy)-based luminescent metallo-supramolecular systems has seen rapid *** review aims to summarize the recent progress of luminescent metallo-supramolecular assemblies from tpy ligands with metal ions,with a focus on discrete metallo-supramolecular architectures and metallo-supramolecular *** design strategies and common approaches for tuning the luminescence properties are detailed along with representative ***,the pitfalls and unmet challenges regarding the structural characterization and practical applications of tpy-based metallo-supramolecules are discussed followed by our perspectives on the future directions of this field.

关键词： luminescence metallo-supramolecules terpyridine coordination-driven self-assembly supramolecular chemistry

Near-Infrared-Emissive Self-assembled Polymers via the Implementation of Molecular Tweezer/Guest Complexation on a supramolecular Coordination Complex Platform

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Chinese Journal of Polymer Science 2018年第3期36卷 399-405页

作者： Zong-Chun Gao Cheng-Peng Wei Yi-Fei Han Ming Yuan Xu-Zhou Yan Feng Wang Chinese Academy of Sciences Key Laboratory of Soft Matter chemistry Department of Polymer Science and EngineeringUniversity of Science and Technology of ChinaHefei 230026 China Department of Chemical Engineering Stanford UniversityCalifornia 94305United States Faculty of Pharmaceutical Engineering Bengbu Medical CollegeAnhui Engineering Technology Research Center of Biochemical PharmaceuticalsBengbu 233030china

Coordination-driven self-assembly strategy has demonstrated the efficiency and versatility to construct well-ordered supramolecular coordination complexes （SCCs） such as discrete metallacycles and metallacages. In recent years, it has aroused tremendous interest to build more complexed self-assembled structures via the implementation of additional non-covalent recognition motifs on the SCCs platform. In this work, we have successfully attained this objective, with the elaborate manipulation of non-interfering pyridine-Pt2＋ and molecular tweezer/guest complexation in a hierarchical self-assembly manner. The resulting SCCs-based linear supramolecular polymers exhibit intriguing NIR-emissive behaviors, primarily attributed to the presence of intermolecular Pt（II）-Pt（II） metal-metal interactions in the non-covalent tweezering structure. Hence, supramolecular engineering of multiple non-covalent interactions offers a feasible avenue toward functional materials with tailored properties.

关键词： supramolecular chemistry Metal-Ligand coordination Molecular tweezer Pt(II)-Pt(II) interactions Near-Infrared-Emission

Construction of supramolecular Chirality in Polymer Systems:Chiral Induction, Transfer and Application

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Chinese Journal of Polymer Science 2021年第11期39卷 1357-1375页

作者： Xiao-Xiao Cheng Teng-Fei Miao Lu Yin Wei Zhang Xiu-Lin Zhu State and Local Joint Engineering Laboratory for Novel Functional Polymeric Materials Jiangsu Key Laboratory of Advanced Functional Polymer Design and ApplicationCollege of ChemistryChemical Engineering and Materials ScienceSoochow UniversitySuzhou 215123China State Key Laboratory of Radiation Medicine and Protection Soochow UniversitySuzhou 215123China

Chirality,commonly found in organisms,biomolecules and nature such as L-amino acids and D-sugars,has been extensively studied in chemistry and biomedical ***,the demand for simple and efficient construction of chiral structures,especially chiral polymers,has been rapidly growing due to their potential applications in chemosensors,asymmetric catalysis and biological ***,most chiral polymers reported are prepared directly from chiral monomers/chiral catalysts,the corresponding strategies usually involve tedious and expensive design and ***,chirality induction strategies(such as circularly polarized light,chiral solvation and chiral gelation etc.)have been known to be highly versatile and efficient in producing chirality from achiral *** this feature article,the current research on chirality induction,transfer and application in achiral polymer systems is ***,this article discusses some basic concepts,seminal studies,recent advances,the structural design principles,as well as perspectives in the construction and applications of chiral polymers derived from achiral monomers,with the hope to attract more interest from researchers and further advance the development of chiral chemistry.

关键词： Chirality Chirality induction Achiral polymer supramolecular chemistry Self-assembly

Strategies for the construction of supramolecular assemblies from poly-NHC ligand precursors

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Science China chemistry 2021年第5期64卷 701-718页

作者： Yang Li Jian-Gang Yu Li-Li Ma Man Li Yuan-Yuan An Ying-Feng Han Key Laboratory of Synthetic and Natural Functional Molecule chemistry FM&EM International Joint LaboratoryCollege of Chemistry and Materials ScienceNorthwest UniversityXi’an 710127China College of Chemical and Material Engineering Quzhou UniversityQuzhou 324000China State Key Laboratory of Structural chemistry Fujian Institute of Research on the Structure of MatterChinese Academy of SciencesFuzhou 350002China

The field of supramolecular assemblies has developed rapidly in the last few decades,thanks in a large part to their diverse *** assemblies have been mostly based on Werner-type coordination motifs in which metal centres are coordinated by nitrogen or oxygen ***,N-heterocyclic carbene(NHC)ligands have been employed as carbon donors not only because of their appealing structures but also due to the extensive applications in catalysis,biomedicine and material science of the resulting *** the last decade,NHC-based supramolecular assemblies have witnessed rapid growth and extensive application in molecular recognition,luminescent materials and *** different topological systems,a diverse selection of poly-NHC precursors and synthetic strategies is crucial to precisely control the synthesis of supramolecular *** synthetic strategies have been developed to synthesise two-dimensional(2D)molecular metallacycles and three-dimensional(3D)metallacages from a wide range of poly-NHC precursors,including a straightforward one-pot strategy,supramolecular transmetalation,stepwise synthesis,an improved one-pot strategy involving self-sorting behaviour of 3D metallacages and a subtle variation strategy of poly-NHC ligand *** review offers a summary of the synthetic strategies applied for the construction of different poly-NHC-based supramolecular assemblies,particularly emphasizes recent progress in the synthesis of large and complex supramolecular assemblies from poly-NHC precursors,and further attention is given to their application in postsynthetic modifications(PSMs),host-guest chemistry,luminescent properties and biomedical applications.

关键词： N-heterocyclic carbene organometallic chemistry supramolecular chemistry synthetic strategies applications

Halogen bonding in the co-crystallization of potentially ditopic diiodotetrafluorobenzene:a powerful tool for constructing multicomponent supramolecular assemblies

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National Science Review 2020年第12期7卷 1906-1932页

作者： Xue-Hua Ding Yong-Zheng Chang Chang-Jin Ou Jin-Yi Lin Ling-Hai Xie Wei Huang Key Laboratory of Flexible Electronics(KLOFE) & Institute of Advanced Materials(IAM) Jiangsu National Synergetic Innovation Center for Advanced Materials(SICAM)Nanjing Tech University(Nanjing Tech) Key Laboratory for Organic Electronics &Information Displays(KLOEID) and Institute of Advanced Materials (IAM) Jiangsu National Synergistic Innovation Center for Advanced Materials (SICAM)Nanjing University of Posts & Telecommunications(NUPT) Shaanxi Institute of Flexible Electronics(SIFE) Northwestern Polytechnical University (NPU)

Halogen bonding is emerging as a significant driving force for supramolecular self-assembly and has aroused great interest during the last two *** the various halogen-bonding donors,we take notice of the ability of 1,4-diiodotetrafluorobenzene(1,4-DITFB) to co-crystallize with diverse halogen-bonding acceptors in the range from neutral Lewis bases(nitrogen-containing compounds,N-oxides,chalcogenides,aromatic hydrocarbons and organometallic complexes) to anions(halide ions,thio/selenocyanate ions and tetrahedral oxyanions),leading to a great variety of supramolecular architectures such as discrete assemblies,1 D infinite chains and 2 D/3 D *** of them act as promising functional materials(***,phosphorescence,optical waveguide,laser,non-linear optics,dielectric and magnetism)and soft materials(*** crystal and supramolecular gel).Here we focus on the supramolecular structures of multicomponent complexes and their related physicochemical properties,highlight representative examples and show clearly the main directions that remain to be developed and improved in this *** the point of view of crystal engineering and supramolecular chemistry,the complexes summarized here should give helpful information for further design and investigation of the elusive category of halogen-bonding supramolecular functional materials.

关键词： halogen bond co-crystal physicochemical properties supramolecular chemistry crystal engineering