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タイトル: Submolecular-scale investigations on metal-phthalocyanine monolayers by frequency modulation atomic force microscopy
著者: Ichii, Takashi
Fukuma, Takeshi link image link image
Yoda, Tadashi
Kobayashi, Kei
Matsushige, Kazumi
Yamada, Hirofumi
福間, 剛士
発行日: 2010年
出版社(者): American Institute of Physics
雑誌名: Journal of Applied Physics
ISSN: 0021-8979
巻: 107
号: 2
開始ページ: 24315
抄録: Copper-phthalocyanine (CuPc) monolayers and cobalt-phthalocyanine monolayers deposited on Au(111) surfaces were investigated by frequency modulation atomic force microscopy (FM-AFM). Submolecular-resolution topographic images were successfully obtained for both samples. Despite the similar molecular geometry of the two molecules, they showed clearly different contrasts in the topographic images. The origin of the contrast is discussed in terms of the relationship of the molecular orbitals and the chemical interaction between the tip and the molecules. In addition, a molecular-resolution surface potential (SP) image was obtained on CuPc monolayers using Kelvin probe force microscopy (KFM) utilizing FM-AFM. The molecular-scale SP contrast was explained by the electric dipole moment at the organic/metal interface. This result suggested the possibility of the detection of the single molecular dipole moment by KFM. © 2010 American Institute of Physics.
DOI: 10.1063/1.3284094
URI: http://hdl.handle.net/2297/21292
関連URI: http://jap.aip.org/japiau/v107/i2/p024315_s1
資料種別: Journal Article
版表示: publisher
出現コレクション:1. 査読済論文

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