Comparative behavior of aromatic disulfide and diselenide monolayers on polycrystalline gold films using cyclic voltammetry, STM, and quartz crystal microbalance
Metadata of CSIR Papers
View Archive Info| Field | Value | |
| Title |
Comparative behavior of aromatic disulfide and diselenide monolayers on polycrystalline gold films using cyclic voltammetry, STM, and quartz crystal microbalance
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| Creator |
Aslam, M
Bandyopadhyay, K Vijayamohanan, K Lakshminarayanan, V |
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| Subject |
Chemistry, Physical
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| Description |
A comparative investigation of the self-assembled monolayers of diphenyl disulfide (DDS), diphenyl diselenide (DDSe), and naphthalene disulfide (NDS) on polycrystalline gold films using STM, QCM, and electrochemical techniques is presented. The geometric constraint imposed by the rigid naphthalene ring for NDS inhibits the cleavage of the SS bond, thus adversely affecting the monolayer organization and stability relative to the monolayers formed with DDS and DDSe. A comparative analysis using techniques like cyclic voltammetry and quartz-crystal microbalance indicates that, for DDS, the facile cleavage of the S-S bond leads to strong binding of the adsorbate molecules at the preferred surface sites, resulting in a rather well-organized self-assembled structure. The STM pattern of NDS reveals a periodic domain (i.e., less than 10 nm in size) while no such small domains are seen in the case of DDS and DDSe due to the orientational flexibility of the rings. (C) 2001 Academic Press.
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| Publisher |
ACADEMIC PRESS INCSAN DIEGO525 B ST, STE 1900, SAN DIEGO, CA 92101-4495 USA
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| Date |
2011-09-24T09:22:13Z
2011-09-24T09:22:13Z 2001 |
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| Type |
Article
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| Identifier |
JOURNAL OF COLLOID AND INTERFACE SCIENCE
0021-9797 http://hdl.handle.net/123456789/24148 |
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| Language |
English
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