Poppe Marco, Chen Changlong, Poppe Silvio, Kerzig Christoph, Liu Feng, Tschierske Carsten
Department of Chemistry, Martin-Luther-University Halle-Wittenberg, Kurt-Mothes Str. 2, Halle/Saale, D-06108, Germany.
State Key Laboratory for Mechanical Behaviour of Materials, Shaanxi International Research Center for Soft Matter, Xi'an Jiaotong University, Xi'an, 710049, P. R. China.
Adv Mater. 2020 Nov;32(47):e2005070. doi: 10.1002/adma.202005070. Epub 2020 Oct 15.
Patterning on the sub-5 nm length scale is a contemporary challenge for further miniaturization of microelectronic circuits. Here, the first soft self-assembled triangular patterns are reported showing transitions between regular and two different kinds of isosceles (acute and obtuse angled) triangles on this length scale, formed by liquid crystalline honeycombs of polyphilic block molecules involving a fluorinated oligo(para-phenylene ethynylene) core. The type of formed triangular pattern depends on the degree and position of fluorination and on temperature. They are the first soft honeycombs combining tilted and nontilted organizations in a uniform nanostructure, where the tilted molecules in only one or two sides of the triangular prismatic cells dominate the shape and the size of the morphology.
在小于5纳米的长度尺度上进行图案化是微电子电路进一步小型化面临的一个当代挑战。在此，报道了首个软自组装三角形图案，其展示了在该长度尺度上由包含氟化低聚（对亚苯基乙炔）核的多亲性嵌段分子的液晶蜂窝结构形成的规则三角形与两种不同类型等腰三角形（锐角和钝角）之间的转变。所形成的三角形图案的类型取决于氟化程度和位置以及温度。它们是首个在均匀纳米结构中结合了倾斜和非倾斜结构的软蜂窝结构，其中仅在三角形棱柱形单元的一侧或两侧的倾斜分子主导了形态的形状和尺寸。
