Author/Authors :
Alonso، نويسنده , , Coralie and Blaudez، نويسنده , , Daniel and Desbat، نويسنده , , Bernard and Artzner، نويسنده , , Franck and Berge، نويسنده , , Bruno and Renault، نويسنده , , Anne، نويسنده ,
Abstract :
Monolayers of 1- and 2-alcohols of varying lengths have been studied at the water surface using polarization modulation infrared reflection absorption spectroscopy. At the melting of the monolayer, we observe for all compounds a sudden increase of the conformational defects. In the liquid phase the alkyl chains contain gauche defects whereas they are all-trans in the solid phase. In addition, the chains are vertical or tilted by a few degrees with respect to the normal to the surface and the anchorage of molecules at the water surface is ensured by hydrogen bonding.
