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Bulletin of the Korean Chemical Society (BKCS)

ISSN 0253-2964(Print)
ISSN 1229-5949(Online)
Volume 28, Number 12
BKCSDE 28(12)
December 20, 2007

Title	Formation and Annealing Effect of Tolanethioacetate Self-Assembled Monolayers on Au(111)
Author	Youngdo Jeong, Jin Wook Han, Nakjoong Kim, Youngil Lee, Changjin Lee, Masahiko Hara, Jaegeun Noh*
Keywords	Self-assembled monolayers, Tolanethioacetate, Ordered domains, Annealing effect, Scanning tunneling microscopy
Abstract	Self-assembled monolayers (SAMs) were formed by adsorption of thioacetyl-terminated tolanethioacetate (TTA) on Au(111) in a 0.5-mM ethanol solution after one day immersion at room temperature. Molecular-scale STM imaging revealed that the TTA SAMs were composed of two mixed phases; an ordered phase with small domains describing a ( × 2 )R30° structure and a disordered phase. Interestingly, after annealing the precovered TTA SAMs on Au(111) at 90 °C for 1 h, the small ordered domains grew unidirectionally, resulting in the formation of unique rod-like domains, which were assigned a ( × 2 )R7° structure. These results will be very useful in understanding the formation and thermal behavior of TTA SAMs on gold surfaces.
Page	2445 - 0
Full Text	PDF

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