Sum-frequency generation spectroscopy of cinnamate modified cellulosic polymer at the air-water interface

The Journal of Physical Chemistry. B
Ellen H G BackusSophie Cantin

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.

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Citations

Jan 9, 2015·Pharmaceutical Development and Technology·Hong Zhang, Jin-Chul Kim
Apr 25, 2015·Physical Chemistry Chemical Physics : PCCP·Zhiguo LiJulianne M Gibbs-Davis
Apr 28, 2021·Langmuir : the ACS Journal of Surfaces and Colloids·Anne-Sophie VaillardSophie Cantin
Mar 28, 2018·Langmuir : the ACS Journal of Surfaces and Colloids·Benjamin RehlJulianne M Gibbs

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