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http://dx.doi.org/10.5012/bkcs.2006.27.3.403

Structure and Electrochemical Behavior of Aromatic Thiol Self-Assembled Monolayers on Au(111)  

Noh, Jae-geun (Department of Chemistry, Hanyang University)
Park, Ha-jung (Department of Chemistry, Hanyang University)
Jeong, Young-do (Department of Chemistry, Hanyang University)
Kwon, Seung-wook (Department of Chemistry, Hanyang University)
Publication Information
Bulletin of the Korean Chemical Society / v.27, no.3, 2006 , pp. 403-406 More about this Journal
Abstract
The surface structure and electrochemical behavior of self-assembled monolayers (SAMs) formed by aromatic thiols on Au(111) were investigated by scanning tunneling microscopy (STM) and cyclic voltammetry. Benzenethiol (BT) forms disordered phases on Au(111) which are composed of many bright domains, while benzyl mercaptan (BM), with a methylene unit between the aromatic group and sulfur atom, forms twodimensional ordered SAMs on Au(111). In addition, two phase-separated domains consisting of disordered and ordered phases were observed in binary SAMs formed from a 1 : 1 mixed ethanol solution of BT and BM. From STM and CV measurements, we found that the blocking efficiency of aromatic thiol SAMs coated on an Au(111) electrode for an electron transfer reaction decreases as the structural order of the SAMs increases. Molecular-scale STM and CV results obtained here will be very useful in designing functional SAMs for further applications, such as the improvement of corrosion passivation of Au(111) on an aromatic thiolmodified Au(111) surface.
Keywords
Benzenethiol, Benzyl mercaptan; Self-assembled monolayers; Scanning tunneling microscopy; Cyclic voltametry;
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1 Han, S. W. Bull. Korean Chem. Soc. 2005, 26, 463   DOI   ScienceOn
2 Jung, H. H.; Won, Y. D.; Shin, S.; Kim, K. Langmuir 1999, 15, 1147   DOI   ScienceOn
3 Yang, G.; Quian, Y.; Engtrakul, C.; Sita, L. R.; Liu, G.-y. J. Phys. Chem. B 2000, 104, 9059   DOI   ScienceOn
4 Noh, J.; Hara, M. Langmuir 2002, 18, 1953   DOI   ScienceOn
5 Tour, J. M. Acc. Chem. Res. 2000, 33, 791   DOI   ScienceOn
6 Baunach, T.; Kolb, D. M. Anal. Bioanal. Chem. 2002, 373, 743   DOI   ScienceOn
7 Dhirani, A. A.; Zehner, R. W.; Hsung, R. P.; Guyot-Sionnest, P.; Sita, L. R. J. Am. Chem. Soc. 1996, 118, 3319   DOI   ScienceOn
8 Tao, Y.-T.; Wu, C.-C.; Eu, J.-Y.; Lin, W.-L. Langmuir 1997, 13, 4018   DOI   ScienceOn
9 Noh, J.; Hara, M. Langmuir 2000, 16, 2045   DOI   ScienceOn
10 Whelan, C. M.; Barnes, C. J.; Walker, C. G. H.; Brown, N. M. D. Surf. Sci. 1999, 425, 195   DOI   ScienceOn
11 Zehner, R. W.; Parsons, B. F.; Hsung, R. P.; Sita, L. R. Langmuir 1999, 15, 1121   DOI   ScienceOn
12 Chen, S.; Li, L.; Boozer, C. L.; Jiang, S. L. Langmuir 2001, 16, 9287   DOI   ScienceOn
13 Chung, C.; Lee, M. Bull. Korean Chem. Soc. 2004, 25, 1461   DOI   ScienceOn
14 Sung, M. M.; Yun, W. J.; Lee, S. S.; Kim, Y. Bull. Korean Chem. Soc. 2003, 24, 610   DOI   ScienceOn
15 Noh, J. Bull. Korean Chem. Soc. 2005, 26, 553   DOI   ScienceOn
16 Love, J. C.; Estroff, L. A.; Kriebel, J. K.; Nuzzo, R. G.; Whitesides, G. M. Chem. Rev. 2005, 105, 1103   DOI   ScienceOn
17 Noh, J.; Hara, M. Langmuir 2001, 17, 7280   DOI   ScienceOn
18 Kakiuchi, T.; Iida, M.; Gon, N.; Hobara, D.; Imabayashi, S.-I.; Niki, K. Langmuir 2001, 17, 1599   DOI   ScienceOn
19 Kolega, R. R.; Schlenoff, J. B. Langmuir 1998, 14, 5469   DOI   ScienceOn
20 Schreiber, J. J. Phys.: Condens. Matter 2004, 16, R881   DOI   ScienceOn
21 Noh, J.; Kato, H. S.; Kawai, M.; Hara, M. J. Phys. Chem. B 2002, 106, 13268   DOI   ScienceOn
22 Noh, J.; Konno, K.; Ito, E.; Hara, M. Jpn. J. Appl. Phys. 2005, 44, 1052   DOI