Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
5365975 | Applied Surface Science | 2010 | 4 Pages |
Abstract
The formation of PTCDA (3,4,9,10-perylene-tetracarboxylic-dianhydride) nanostrutures on Au(1Â 1Â 1)-(22Ã3) covered with NaCl islands has been studied using scanning tunneling microscopy (STM). Atomically resolved STM images show that NaCl grows as (1Â 0Â 0)-terminated layers on Au(1Â 1Â 1)-(22Ã3). Local atomic hexagonal packing has also been observed in the NaCl(1Â 0Â 0) layer. At submonolayer NaCl coverage, PTCDA forms two-dimensional islands on the Au(1Â 1Â 1) surface and nucleate preferentially at the NaCl island step edges. When the Au surface is fully covered with NaCl layers, PTCDA molecules form three-dimensional molecular clusters decorating the step edges of NaCl layers.
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Physical and Theoretical Chemistry
Authors
Xiaonan Sun, Fabien Silly,