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Temporal stability of thiophene self-assembled monolayers on Au(111)
- Authors
- Han, Jin Wook; Noh, Jaegeun
- Issue Date
- Mar-2007
- Publisher
- Taylor & Francis
- Keywords
- scanning tunneling microscopy; self-assembled monolayers; surface structure; temporal stability; thiophene
- Citation
- Molecular Crystals and Liquid Crystals, v.464, pp 787 - 791
- Pages
- 5
- Indexed
- SCIE
SCOPUS
- Journal Title
- Molecular Crystals and Liquid Crystals
- Volume
- 464
- Start Page
- 787
- End Page
- 791
- ISSN
- 1542-1406
1543-5318
- Abstract
- Temporal stability of close- packed thiophene ( TP) self- assembled monolayers ( SAMs) on Au( 111) was investigated by scanning tunneling microscopy ( STM). Molecular- scale STM imaging reveals that the structural transitions of TP SAMs in the structure and size of ordered domains and the distribution of vacancy islands ( VIs) occurs after long- term storage for 1 year. During this time period, the ordered domain sizes were remarkably increased and the fraction of the areas of the VIs to the total surface area was steeply decreased from 6.5% to 1.7%. We demonstrate that the temporal factor strongly affects two- dimensional SAM structures and our results will be very useful in designing a molecular template for SAM- based further applications.
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Related Researcher
- Noh, Jae geun
- COLLEGE OF NATURAL SCIENCES (DEPARTMENT OF CHEMISTRY)