Self-Assembled Monolayers of Heavy Chalcogenophenes and Dialkyl Heavy Chalcogenides on Au(111)

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• 作者：Tohru Nakamura ; Ryota Kimura ; Fumihiko Matsui ; Hiroshi Kondoh ; Toshiaki Ohta ; Hideki Sakai ; Masahiko Abe ; and Mutsuyoshi Matsumoto
• 刊名：Langmuir
• 出版年：2000
• 出版时间：May 2, 2000
• 年：2000
• 卷：16
• 期：9
• 页码：4213 - 4216
• 全文大小：136K
• 年卷期：v.16,no.9(May 2, 2000)
• ISSN：1520-5827

文摘

Self-assembled monolayers (SAMs) of heavy chalcogenophenes and dialkyl heavy chalcogenides on Au(111) were prepared by a vapor adsorption method. The adsorption of heavy chalcogenide analogues wasconfirmed by X-ray photoelectron spectroscopy. The structures of the films were observed using scanningtunneling microscopy under atmospheric conditions. The SAM of selenophene was stable and showedstriped patterns with a row-to-row spacing of 16 ± 1 Å. Dibutyl selenide also formed striped patterns butwith longer exposure times. Tellurophene and dibutyl telluride were found to adsorb on Au(111) but didnot form ordered structures. The interactions of furan and thiophene with Au(111) were not strong enoughfor the molecule to adsorb on Au(111) at room temperature.