Sierpiński-triangle fractal crystals with the C3v point group

Na Li (1) , Xue Zhang (1) , Gao-Chen Gu (1) , Hao Wang (1) , Damian Nieckarz (2) , Pawel Szabelski (2) , Yang He (1) , Yu Wang (1) , Jing-Tao Lü (3) , Hao Tang (4) , Lian-Mao Peng (1) , Shi-Min Hou (1) , Kai Wu (1) , Yong-Feng Wang (1)

1 Peking University [Beijing]
2 Marie Curie-Sklodowska University
3 HUST - Huazhong University of Science and Technology [Wuhan]
4 CEMES - Centre d'élaboration de matériaux et d'études structurales

Self-similar fractals are of importance in both science and engineering. Metal-organic Sierpiński triangles are particularly attractive for applications in gas separation, catalysis and sensing. Such fractals are constructed in this study by using 120° V-shaped 4,4″-dicyano-1,1′:3′,1″-terphenyl molecules and Fe atoms on Au(1 1 1), and studied in detail by low-temperature scanning tunneling microscopy. Density functional theory calculations are employed to rationalize the invisible Fe atoms in STM images. Monte Carlo simulations are performed to understand the formation mechanism of the surface-supported fractal crystals.

Domaines: Physique [physics]

Na Li, Xue Zhang, Gao-Chen Gu, Hao Wang, Damian Nieckarz, et al.. Sierpiński-triangle fractal crystals with the C3v point group. Chinese Chemical Letters, 2015, 26 (10), pp.1198-1202. ⟨10.1016/j.cclet.2015.08.006⟩. ⟨hal-01766332⟩