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    邱惠斌. π-共轭纤维状杂化纳米结构的精准构筑与功能化[J]. 功能高分子学报, 2020, 33(4): 316-319. doi: 10.14133/j.cnki.1008-9357.20200601002
    引用本文: 邱惠斌. π-共轭纤维状杂化纳米结构的精准构筑与功能化[J]. 功能高分子学报, 2020, 33(4): 316-319. doi: 10.14133/j.cnki.1008-9357.20200601002
    QIU Huibin. Construction of Fiber-Like-Conjugated Hybrid Nanostructures of Controlled Length and Composition[J]. Journal of Functional Polymers, 2020, 33(4): 316-319. doi: 10.14133/j.cnki.1008-9357.20200601002
    Citation: QIU Huibin. Construction of Fiber-Like-Conjugated Hybrid Nanostructures of Controlled Length and Composition[J]. Journal of Functional Polymers, 2020, 33(4): 316-319. doi: 10.14133/j.cnki.1008-9357.20200601002

    π-共轭纤维状杂化纳米结构的精准构筑与功能化

    Construction of Fiber-Like-Conjugated Hybrid Nanostructures of Controlled Length and Composition

    • 摘要: π-共轭聚合物因在电致发光材料、场效应晶体管等领域具有潜在的应用前景而受到人们的广泛关注。通过π-共轭聚合物的可控组装实现纳米纤维结构的精确构筑一直是提升材料性能的研究方向和挑战之一。近来,中国科学院上海有机化学研究所黄晓宇、冯纯课题组将非共价作用与活性结晶驱动自组装相结合,实现了多组分和多功能的以π-共轭对苯撑乙烯撑寡聚物(OPV)为核的纤维状杂化纳米结构的精确构筑及选择性功能化。利用“自晶种”(self-seeding)和活性“种子增长”(seeded growth)制备了以OPV为核,不同壳层的三嵌段和五嵌段单分散纳米纤维,并实现了对纤维各个嵌段长度的控制。利用聚2-乙烯基吡啶(P2VP)壳层作为后功能化锚点,可将无机纳米粒子(CdTe量子点、Au、Ag和Fe3O4纳米粒子)、聚合物球形胶束、SiO2/TiO2层负载在纤维状胶束的P2VP壳层中,并可单独对含有不同壳层的多嵌段纤维状胶束的P2VP壳层进行选择性修饰。这为多组分和多功能的π-共轭杂化纳米纤维状结构的高效构筑提供了一条新途径。

       

      Abstract: π-Conjugated polymers have gained extensive attention due to potential applications in electroluminescent materials, field effect transistor, etc. The precise preparation of fiber-like π-conjugated fiber-like hybrid nanostructures of controlled length and composition has always been one of the research directions to improve the performance of materials, and still remains a challenge. Recently, Prof. Huang and Prof. Feng’s group from Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, demonstrated an efficient and versatile platform for the construction of oligo(p-phenylenevinylene)(OPV)-based multi-component and multi-function fiber-like hybrid nanostructures by the combination of non-covalent interaction and “living” crystallization-driven self-assembly (CDSA). Through self-seeding and seeded growth approaches, uniform continuous micelles and segmented A-B-A, B-A-B-A-B multiblock fiber-like comicelles were able to be generated with tunable lengths for each block. By taking advantage of pyridyls of poly(2-vinylpyridine) (P2VP)-forming coronas, P2VP domains in these micelles or comicelles could be functionalized with diverse inorganic(CdTe, Au, Ag and Fe3O4) and polymeric nanoparticles as well as metal oxide coatings (SiO2 and TiO2) to afford hierarchical hybrid nanostructures. This work provides a versatile strategy toward the fabrication of multi-component, multi-function π-conjugated fiber-like nanostructures with the capacity to be selectively functionalized.

       

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