Beijing National Laboratory for Molecular Sciences (BNLMS), Key Laboratory of Organic Solids, Institute of Chemistry, Chinese Academy of Sciences, Beijing, 100190, P. R. China.
Department of Chemical Engineering, Monash University, Clayton, Victoria, 3800, Australia.
Small. 2017 Jan;13(4). doi: 10.1002/smll.201602265. Epub 2016 Oct 7.
As a new member of carbon allotropes, graphdiyne is a promising material with excellent electronic performance and high elasticity, indicating the possibility of graphdiyne to serve as the building blocks in flexible electronics. However, precise positioning/patterning of graphdiyne is still a challenge for the realization of large-area and flexible organic electronic devices and circuits. Here, the direct in situ synthesis of patterning graphdiyne stripe arrays dominated by the superlyophilic grooved templates is reported, whereas the superlyophilicity of grooved templates plays a key role in allowing continuous mass transport of raw reactants into the microscale spacing. After the completion of cross-coupling reaction procedure, precisely patterned graphdiyne stripes can be generated accordingly. The size of graphdiyne stripe arrays is depending on the silicon substrate size (1 cm × 1.5 cm), and the layer thickness can be manipulated from just several nanometers to hundreds of nanometers by varying the primary concentration of hexaethynylbenzene monomers. As a proof-of-principle demonstration, a stretchable sensor based on the graphdiyne stripe arrays is performed to monitor the human finger motion. It is expected that this wettability-facilitated strategy will provide new insights into the controlled synthesis of graphdiyne toward promising flexible electronics and other optoelectronic applications.
作为碳同素异形体的新成员，石墨炔是一种具有优异电子性能和高弹性的有前途的材料，表明石墨炔有可能作为构建柔性电子器件的基础材料。然而，对于实现大面积和柔性有机电子器件和电路，精确地定位/图案化石墨炔仍然是一个挑战。在这里，报道了由超亲水性凹槽模板主导的图案化石墨炔条纹阵列的直接原位合成，而凹槽模板的超亲水性在允许原料连续传质到微尺度间距方面起着关键作用。在交叉偶联反应完成后，相应地可以生成精确图案化的石墨炔条纹。石墨炔条纹阵列的尺寸取决于硅基底的尺寸（1cm×1.5cm），并且通过改变六乙炔基苯单体的初始浓度，可以将层厚度从几纳米操纵到几百纳米。作为原理验证演示，基于石墨炔条纹阵列的可拉伸传感器用于监测人体手指运动。预计这种润湿性促进策略将为控制石墨炔的合成提供新的思路，以实现有前途的柔性电子学和其他光电应用。
