AUTHOR=Tan Shanchao , Luo Wendi , Zhang Yongjie , Ren Xiang-Kui , Liu Yuhong , Chen Zhijian , Zeng Qingdao TITLE=Structural and Nanotribological Properties of a BODIPY Self-Assembly JOURNAL=Frontiers in Chemistry VOLUME=9 YEAR=2021 URL=https://www.frontiersin.org/journals/chemistry/articles/10.3389/fchem.2021.704915 DOI=10.3389/fchem.2021.704915 ISSN=2296-2646 ABSTRACT=

Boron-dipyrromethenes (BODIPY) are promising functional dyes, whose exceptional optical properties are closely related to their supramolecular assembly. Herein, the self-assembly of a BODIPY derivative functionalized with uracil groups is explicitly and thoroughly investigated by using scanning tunneling microscopy (STM). Based on the simulation and calculation by density functional theory (DFT) method, it can be concluded that the construction of ordered self-assembly structure is attributed to the formation of hydrogen bonds between uracil groups. Moreover, the nanotribological property of the self-assembly on HOPG surface is measured by using atomic force microscopy (AFM). The effort on self-assembly of the BODIPY derivative could enhance the understanding of surface assembly mechanism.