Coexistence of Closely Packed c(4 x 2) and Striped Phases in Self-Assembled Monolayers of Decylthiocyanates on Au(111)

被引：5

作者：

Choi, Youngsik ^{[1
,2
]}

Kang, Hungu ^{[1
,2
]}

Choi, Inchang ^{[1
,2
]}

Lee, Nam-Suk ^{[1
,2
]}

Cho, Jun-Hyung ^{[3
]}

Jang, Chang-Hyun ^{[4
]}

Noh, Jaegeun ^{[1
,2
]}

机构：

[1] Hanyang Univ, Dept Chem, Seoul 133791, South Korea

[2] Hanyang Univ, Res Inst Nat Sci, Seoul 133791, South Korea

[3] Hanyang Univ, Dept Phys, Seoul 133791, South Korea

[4] Kyungwon Univ, Coll Bionano Technol, Songnam 461701, Gyeonggi, South Korea

来源：

BULLETIN OF THE KOREAN CHEMICAL SOCIETY | 2010年 / 31卷 / 04期

关键词：

Decylthiocyanate; Self-assembled monolayers; Scanning tunneling microscopy; Structural order; Vapor deposition; SCANNING-TUNNELING-MICROSCOPY; ORGANIC THIOCYANATES; DECYL THIOCYANATE; GOLD; DECANETHIOL; ADSORPTION; SURFACE;

D O I：

10.5012/bkcs.2010.31.04.901

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Decylthiocyanate (DTC) self-assembled monolayers (SAMs) on Au(111) were prepared by solution and vapor phase deposition methods at 50 degrees C for 24 h The formation and surface structure of DTC SAMs were examined using scanning tunneling microscopy (STM) STM imaging revealed that DTC SAMs formed in 1 mM ethanol solution at 50 degrees C were composed of small ordered domains with lateral dimensions of a few nanometers and disordered phases, whereas DTC SAMs formed in the vapor phase at 50 degrees C contained two ordered phases a closely packed c(4 x 2) superlattice and a striped phase with an mterstripe spacing of 26 - 2 8 nm It was also found that the ordered domain and vacancy island formation for DTC SAMs on Au(111) differs significantly from that of decanethiol SAMs, suggesting that adsorption mechanism is different from each other From this study, it was confirmed that DTC SAMs with a high degree of structural order can be obtained by vapor phase deposition.

引用

页码：901 / 904

页数：4

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