题目：

Lateral epitaxial growth of two-dimensional organic heterostructures

作者：

Qiang Lv^1,2, Xue-Dong Wang¹*, Yue Yu¹, Chao-Fei Xu¹, Yan-Jun Yu¹, Xing-Yu Xia¹, Min Zheng²* , Liang-Sheng Liao^1,3*

单位：

¹Institute of Functional Nano and Soft Materials (FUNSOM), Jiangsu Key Laboratory for Carbon-Based Functional Materials and Devices, Soochow University, Suzhou, Jiangsu, PR China.

²National Engineering Laboratory for Modern Silk, College of Textile and Clothing Engineering, Research Center of Cooperative Innovation for Functional Organic/Polymer Material Micro/Nanofabrication, Soochow University, Suzhou, Jiangsu, PR China.

³Macao Institute of Materials Science and Engineering, Macau University of Science and Technology, Taipa, Macau SAR, PR China.

摘要：

Two-dimensional organic lateral heterostructures (2D OLHs) are attractive for the fabrication of functional materials. However, it is difficult to control the nucleation, growth and orientation of two distinct components. Here we report the combination of two methods—liquid-phase growth and vapour-phase growth—to synthesize 2D OLHs from perylene and a perylenecarboxaldehyde derivative, with a lateral size of ~20μm and a tunable thickness ranging from 20 to 400nm. The screw dislocation growth behaviour of the 2D crystals shows the spiral arrangement of atoms within the crystal lattice, which avoids volume expansion and contraction of OLH, thereby minimizing lateral connection defects. Selective control of the nucleation and sequential growth of 2D crystals leads to structural inversion of the 2D OLHs by the vapour-phase growth method. The resulting OLHs show good light-transport capabilities and tunable spatial exciton conversion, useful for photonic applications. This synthetic strategy can be extended to other families of organic polycyclic aromatic hydrocarbons, as demonstrated with other pyrene and perylene derivatives.

影响因子：

24.274

分区情况：

一区

链接：

https://www.nature.com/articles/s41557-023-01364-1