Ultralarge Nanosheets Fabricated by the Hierarchical Self-Assembly of Porphyrin-Ended Hyperbranched Poly (ether amine) (TPP-hPEA)
Ultralarge Nanosheets Fabricated by the Hierarchical Self-Assembly of Porphyrin-Ended Hyperbranched Poly (ether amine) (TPP-hPEA)
复制标题
卟啉末端超支化聚醚胺（TPP-hPEA）分层自组装制备的超大纳米片
DOI：
10.1002/marc.201800042
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发表时间：
2018
影响因子：
4.6
通讯作者：
Yin Jie
中科院分区：
文献类型：
--
作者：
Wang Ruiqing;Tao Tao;Su Zhilong;Ma Xiaodong;Jiang Xuesong;Xu Hongjie;Yin Jie
利用端基超支化聚醚胺(TPP-hPEA)在溶液中的分级自组装，制备了横向尺寸为10µm×10µm-20µm×20µm的超大尺寸薄膜。得到的TPP-hPEA两亲分子可以从厚度为4 nm的超薄单层纳米薄膜自组装到厚度为30~70 nm的超长多层纳米薄膜。横向尺寸从2×2微米增加到5×5微米，最终增加到10×10微米。动态光散射和紫外可见光谱研究表明，这种层次化生长自组装机制依赖于π-π堆积的自组装过程。这种二维自组装方法为在溶液中制备超大尺寸纳米薄片提供了重要的潜在指导。
An ultralarge sheet with remarkable lateral dimensions of 10 µm × 10 µm–20 µm × 20 µm is fabricated by the hierarchical self‐assembly of porphyrin‐ended hyperbranched poly(ether amine) (tetraphenylporphyrin (TPP)–hPEA) in solution. The obtained TPP–hPEA amphiphiles can self‐assemble from ultrathin single‐layered nanosheets with a thickness of 4 nm to ultralarge multilayered nanosheets with thicknesses from 30 to 70 nm. The lateral dimensions increase from 2 × 2 µm to 5 × 5 µm, and eventually to 10 × 10 µm. In‐situ dynamic light scattering and UV–vis spectroscopy studies suggest a hierarchical growth self‐assembly mechanism with a self‐assembly process that relies on π–π stacking. This 2D self‐assembly method provides a significant potential guide for the preparation of ultralarge nanosheets in solution.