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Sum-frequency generation spectroscopy of cinnamate modified cellulosic polymer at the air-water interface.
- Source :
-
The journal of physical chemistry. B [J Phys Chem B] 2012 May 24; Vol. 116 (20), pp. 6041-9. Date of Electronic Publication: 2012 May 11. - Publication Year :
- 2012
-
Abstract
- Monolayers of a cellulosic polymer bearing cinnamate groups were characterized at the air-water interface by combining isotherm measurements, Brewster angle microscopy, and infrared-visible sum-frequency generation (SFG) spectroscopy. This spectroscopic technique was used to detect the photochemical behavior of the cinnamate groups upon UV photoirradiation of the monolayers. From the disappearance of the C═C mode and the absence of a change in the C═O mode, it could be concluded that isomerization is the dominant photoreaction for a monolayer of this polymer. This conclusion was corroborated by a comparison of the spectra of the monolayer after irradiation with spectra measured for monolayers spread from preirradiated solutions, for which it is known that isomerization is the main process.
Details
- Language :
- English
- ISSN :
- 1520-5207
- Volume :
- 116
- Issue :
- 20
- Database :
- MEDLINE
- Journal :
- The journal of physical chemistry. B
- Publication Type :
- Academic Journal
- Accession number :
- 22554034
- Full Text :
- https://doi.org/10.1021/jp301844b