Characterisation of alkanethiol (CnH2n + 1SH, n = 3, 4, 6, 8,10,12 and 18) self assembled monolayers by X-ray photoelectron spectroscopy
✍ Scribed by V Bindu; T Pradeep
- Book ID
- 104265955
- Publisher
- Elsevier Science
- Year
- 1998
- Tongue
- English
- Weight
- 467 KB
- Volume
- 49
- Category
- Article
- ISSN
- 0042-207X
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✦ Synopsis
Alkanethiol
self assembled monolayers of varying chain lengths have been studied by X-ray photoelectron spectroscopy.
Inelastic background of the SZp peak monotonically increases with the chain length. The binding energies and peak shapes are the same for all the samples studied indicating the chemical similarity of the monolayers.
However, increasedpacking density is seen with hexane and octanethiol SAMs suggesting greater surface order, It is proposed that in higher and lower thiols, random orientation of the chains decreases packing density. inelastic background of the SZp peak is directly proportional to the ellipsometric thickness of the mono/a yers.