NaCl islands decorated with 2D or 3D 3,4,9,10-perylene-tetracarboxylic-dianhydride nanostructures |
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Authors: | Xiaonan Sun |
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Institution: | a Zernike Institute for Advanced Materials, University of Groningen, Nijenborgh 4, NL-9747 AG Groningen, The Netherlands b CEA, IRAMIS, SPCSI, Nanostructures and Organic Semiconductors Laboratory, F-91191 Gif-sur-Yvette, France c UPMC, IPCM, UMR CNRS 7201, 4 place Jussieu, F-75005 Paris, France |
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Abstract: | The formation of PTCDA (3,4,9,10-perylene-tetracarboxylic-dianhydride) nanostrutures on Au(1 1 1)-( ) covered with NaCl islands has been studied using scanning tunneling microscopy (STM). Atomically resolved STM images show that NaCl grows as (1 0 0)-terminated layers on Au(1 1 1)-( ). Local atomic hexagonal packing has also been observed in the NaCl(1 0 0) layer. At submonolayer NaCl coverage, PTCDA forms two-dimensional islands on the Au(1 1 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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Keywords: | 68 37 Ef 81 16 Rf 68 55 Jk |
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