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Nanoengineering of Curved Supramolecular Polymers:Toward Single-Chain Mesoscale Materials

Accounts of Materials Research 2022年第2期3卷 259-271页

作者： sougata datta Sho Takahashi Shiki Yagai Department of Applied Chemistry and Biotechnology Graduate School of EngineeringChiba UniversityChiba 263-8522Japan Division of Advanced Science and Engineering Graduate School of Engineering and Institute for Global Prominent Research(IGPR)Chiba UniversityChiba 263-8522Japan

CONSPECTUS:Recently,supramolecular polymers(SPs),which depend on the formation of reversible bonds between monomers,have attracted attention as a class of materials that can overcome the potential environmental problems of conventional polymeric *** development of various supramolecular polymers is important not only for their direct application as materials but also because their unique polymerization processes and dynamic properties have a profound influence on the development of polymeric and small-molecule-based functional *** other words,by limiting the dimensionality of molecular assemblies to one dimension,we can discover the essential aspects of selfassembly and *** particular,supramolecular polymerization,in whichπ-electron-rich planar molecules are stacked one-dimensionally via multiple interactions,is interesting because it gives“π-stacked SPs”with one-dimensional crystal-like *** excellent intrinsic(internal)structural order ofπ-stacked SPs is difficult to observe in higher-order structures that exhibit only a monotonous linear ***,our research has shown that when internal structural order intrinsically generates curvature,the curvature appears as a major feature of the entire polymer *** intrinsic curvature allows the formation of diverse topologies such as toroids,random coils,waves,spirals,and helicoids usingπ-stacked SPs and also allows structural changes at the single-polymer-chain level along a topology-dependent energy *** other words,π-stacked SP-based nanomaterials could enable free control of the structure at the single-polymer-chain *** Account will focus on our research into curved supramolecular polymers(CSPs)during the last five *** are formed by the hydrogen bonding between barbituratecontainingπ-conjugated molecules to produce giant supramolecular *** first give an overview of the molecular design of the monomers required for the formation of CSP

关键词： materials curvature bonds

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