Abstract
We have recently found that ethanol molecules form a hydrogen-bonded organized structure from the silanol groups of the glass surface, which we call an "ethanol macrocluster". This study aims at developing a method for forming similar molecular macroclusters from the other hydrogen bonded functional groups in addition to the silanol group. We modified Au-deposited glass surface with 11-Mercaptoundecanol (11-MUN) and 11-Mercatoundecanoic acid (11-MUA), respectively. Adsorption of ethanol on these substrates was studied using the surface plasmon resonance (SPR) measurement in ethanol/cyclohexane binary liquids and estimated the thickness of the adsorbed ethanol layer. For both substrates, the difference in SPR resonance angles between the value for cyclohexane and 1.8 mol% ethanol was ca. 0.6 degree, corresponding to 7-8 nm thickness of the adsorbed ethanol layer. This result indicated the formation of the ethanol macroclusters from the OH and COOH groups on the Au substrate.
| Original language | English |
|---|---|
| Number of pages | 1 |
| Publication status | Published - 2005 Dec 1 |
| Event | 54th SPSJ Annual Meeting 2005 - Yokohama, Japan Duration: 2005 May 25 → 2005 May 27 |
Other
| Other | 54th SPSJ Annual Meeting 2005 |
|---|---|
| Country | Japan |
| City | Yokohama |
| Period | 05/5/25 → 05/5/27 |
Keywords
- Adsorption
- Hydrogen bonding
- Molecular macrocluster
- Self-assembled monolayer
- Surface plasmon resonance
ASJC Scopus subject areas
- Engineering(all)