Department of Chemical Engineering, Hanyang University, Seoul, 04763, Korea.
Department of Chemistry, Hanyang University, Seoul, 04763, Korea.
Angew Chem Int Ed Engl. 2022 Oct 24;61(43):e202211465. doi: 10.1002/anie.202211465. Epub 2022 Sep 27.
Creation of new two-dimensional (2D) architectures has attracted significant attention in the field of self-assembly for structural diversity and new functionalization. Although numerous 2D polymer nanosheets have been reported, 2D nanosheets with tubular channels have been unexplored. Herein, we describe a new strategy for the fabrication of stimulus-responsive conjugated polymer 2D nanosheets with hollow cavities. Amphiphilic macrocyclic diacetylenes self-assembled in an aqueous solution in a columnar manner to afford bilayered 2D nanosheets with intrinsically tubular nanochannels. UV-induced polymerization resulted in the generation of blue-colored tubular conjugated polydiacetylene 2D nanosheets. Immobilization of gold nanoparticles, fluorescence labeling with FRET phenomenon and colorimetric DNA sensing were demonstrated with these new 2D nanosheets. In addition, the free NH containing polymerized 2D nanosheet was utilized for conductivity behavior and grafting on graphene oxide (GO).
在自组装领域，构建新型二维（2D）结构因其结构多样性和新功能而受到广泛关注。尽管已经报道了许多 2D 聚合物纳米片，但具有管状通道的 2D 纳米片仍未被探索。在此，我们描述了一种制备刺激响应性共轭聚合物 2D 纳米片的新策略，该纳米片具有中空腔。两亲性大环二炔在水溶液中自组装成柱状，形成具有本征管状纳米通道的双层 2D 纳米片。紫外光诱导聚合导致生成蓝色管状共轭聚二乙炔 2D 纳米片。这些新型 2D 纳米片可用于金纳米粒子的固定化、荧光标记与荧光共振能量转移（FRET）现象以及比色 DNA 传感。此外，含游离 NH 的聚合 2D 纳米片可用于导电性行为和接枝在氧化石墨烯（GO）上。
