Zhang Wei, Yang Weilu, Pan Hongbing, Lyu Xiaolin, Xiao Anqi, Liu Dong, Liu Yun, Shen Zhihao, Yang Huai, Fan Xing-He
Beijing National Laboratory for Molecular Sciences, Key Laboratory of Polymer Chemistry and Physics of Ministry of Education, Center for Soft Matter Science and Engineering, and College of Chemistry and Molecular Engineering, Peking University, Beijing 100871, China.
Soft Matter. 2022 May 4;18(17):3430-3436. doi: 10.1039/d2sm00059h.
The preparation of sub-5-nm ordered structures is very important to the development of today's nanotechnology. Block molecules have the potential to form structures with significantly small characteristic dimensions. Herein two novel organic-inorganic block molecules composed of a hexa--hexabenzocoronene (HBC) core and two oligo(dimethylsiloxane) (ODMS) tails with symmetry are reported. A hierarchical lamello-columnar structure with a two-dimensional rectangular lattice where HBC cores adopt a tilted arrangement was obtained from their bulk self-assembly. The feature sizes are all below 5 nm and can be regulated the number of ODMS chains. Sub-5-nm line structures were obtained through spin-coating of the block molecules onto silicon substrates modified with poly(dimethylsiloxane). As organic-inorganic hybrid materials, these block molecules may be further applied in sub-5-nm nanopatterning.
制备小于5纳米的有序结构对当今纳米技术的发展非常重要。嵌段分子有潜力形成特征尺寸显著小的结构。本文报道了两种由六-六苯并蔻（HBC）核心和两条具有对称性的低聚（二甲基硅氧烷）（ODMS）尾部组成的新型有机-无机嵌段分子。通过它们的本体自组装得到了一种具有二维矩形晶格的分层片层柱状结构，其中HBC核心呈倾斜排列。特征尺寸均小于5纳米，并且可以通过ODMS链的数量进行调节。通过将嵌段分子旋涂到用聚（二甲基硅氧烷）改性的硅基板上获得了小于5纳米的线状结构。作为有机-无机杂化材料，这些嵌段分子可能会进一步应用于小于5纳米的纳米图案化。
