Zhang Xue, Li Na, Gu Gaochen, Zhang Yajie, Hou Shimin, Wang Yongfeng
Key Laboratory for the Physics and Chemistry of Nanodevices, Department of Electronics, Peking University, Beijing 100871, China.
Chem Commun (Camb). 2017 Aug 22;53(86):11826-11829. doi: 10.1039/c7cc06179j.
Sierpiński triangles up to the fourth order were successfully prepared using 4,4''-dicyano-1,1':3',1''-terphenyl molecules and Fe or Co atoms with the coexistence of the third molecules (C or MnPc) on a reconstructed Au(111) substrate. Sierpiński triangles could be disturbed and restored by C molecules after annealing at 400 and 360 K, respectively. The dispersed MnPc molecules did not affect the formation of Sierpiński triangles when annealed at high temperatures. The selective adsorption of MnPc molecules at certain holes of Sierpiński triangles was observed.
利用4,4''-二氰基-1,1':3',1''-三联苯分子以及铁或钴原子，并在重构的金（111）衬底上同时存在第三种分子（碳或锰酞菁）的情况下，成功制备出了四阶以内的谢尔宾斯基三角形。在分别于400K和360K退火后，谢尔宾斯基三角形会受到碳分子的干扰并得以恢复。当在高温下退火时，分散的锰酞菁分子不会影响谢尔宾斯基三角形的形成。观察到锰酞菁分子在谢尔宾斯基三角形的某些孔洞处发生了选择性吸附。
