In-situ monitoring of the thermal desorption of alkanethiols with surface plasmon resonance spectroscopy (SPRS)

Thermal desorption investigations on self-assembled monolayers (SAMs) had previously been carried out using techniques such as thermal desorption spectroscopy (TDS), scannin...

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Main Authors: Wong, Chee Cheong, Romanato, Filippo, Lee, Kwang Hong, Ang, X. F., Li, J.
Other Authors: School of Materials Science & Engineering
Format: Article
Language:English
Published: 2010
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Online Access:https://hdl.handle.net/10356/92546
http://hdl.handle.net/10220/6206
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Institution: Nanyang Technological University
Language: English
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spelling sg-ntu-dr.10356-925462020-06-01T10:13:46Z In-situ monitoring of the thermal desorption of alkanethiols with surface plasmon resonance spectroscopy (SPRS) Wong, Chee Cheong Romanato, Filippo Lee, Kwang Hong Ang, X. F. Li, J. School of Materials Science & Engineering DRNTU::Engineering::Materials::Plasma treatment Thermal desorption investigations on self-assembled monolayers (SAMs) had previously been carried out using techniques such as thermal desorption spectroscopy (TDS), scanning tunneling microscopy (STM) and X-ray photo-electron spectroscopy (XPS). In this paper, the thermal dissociation of alkanethiols (CnH2n+1SH) at various chain lengths (n = 6, 12, 18) on sputtered gold layers was monitored in-situ using the Kretschmann surface plasmon resonance configuration on a spectroscopic ellipsometer. We found that the longest alkanethiol (C18 exhibits the greatest thermal stability, manifested by the least amount of angular shift, during heating, in the resonant spectral features. Predictions of desorption temperatures from SPRS for the longer chain thiols are in good agreement with XPS measurements. Accepted version 2010-03-23T05:58:31Z 2019-12-06T18:25:01Z 2010-03-23T05:58:31Z 2019-12-06T18:25:01Z 2010 2010 Journal Article Wong, C. C., Romanto, F. , Lee, K. H., Ang, X. F., & Li, J. (2010). In-situ monitoring of the thermal desorption of alkanethiols with surface plasmon resonance spectroscopy (SPRS). Journal of Nanoscience and Nanotechnology. 1533-4880 https://hdl.handle.net/10356/92546 http://hdl.handle.net/10220/6206 151099 en Journal of nanoscience and nanotechnology
institution Nanyang Technological University
building NTU Library
country Singapore
collection DR-NTU
language English
topic DRNTU::Engineering::Materials::Plasma treatment
spellingShingle DRNTU::Engineering::Materials::Plasma treatment
Wong, Chee Cheong
Romanato, Filippo
Lee, Kwang Hong
Ang, X. F.
Li, J.
In-situ monitoring of the thermal desorption of alkanethiols with surface plasmon resonance spectroscopy (SPRS)
description Thermal desorption investigations on self-assembled monolayers (SAMs) had previously been carried out using techniques such as thermal desorption spectroscopy (TDS), scanning tunneling microscopy (STM) and X-ray photo-electron spectroscopy (XPS). In this paper, the thermal dissociation of alkanethiols (CnH2n+1SH) at various chain lengths (n = 6, 12, 18) on sputtered gold layers was monitored in-situ using the Kretschmann surface plasmon resonance configuration on a spectroscopic ellipsometer. We found that the longest alkanethiol (C18 exhibits the greatest thermal stability, manifested by the least amount of angular shift, during heating, in the resonant spectral features. Predictions of desorption temperatures from SPRS for the longer chain thiols are in good agreement with XPS measurements.
author2 School of Materials Science & Engineering
author_facet School of Materials Science & Engineering
Wong, Chee Cheong
Romanato, Filippo
Lee, Kwang Hong
Ang, X. F.
Li, J.
format Article
author Wong, Chee Cheong
Romanato, Filippo
Lee, Kwang Hong
Ang, X. F.
Li, J.
author_sort Wong, Chee Cheong
title In-situ monitoring of the thermal desorption of alkanethiols with surface plasmon resonance spectroscopy (SPRS)
title_short In-situ monitoring of the thermal desorption of alkanethiols with surface plasmon resonance spectroscopy (SPRS)
title_full In-situ monitoring of the thermal desorption of alkanethiols with surface plasmon resonance spectroscopy (SPRS)
title_fullStr In-situ monitoring of the thermal desorption of alkanethiols with surface plasmon resonance spectroscopy (SPRS)
title_full_unstemmed In-situ monitoring of the thermal desorption of alkanethiols with surface plasmon resonance spectroscopy (SPRS)
title_sort in-situ monitoring of the thermal desorption of alkanethiols with surface plasmon resonance spectroscopy (sprs)
publishDate 2010
url https://hdl.handle.net/10356/92546
http://hdl.handle.net/10220/6206
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