Limited Propagation of Lattice Distortion in Trilayer Langmuir-Blodgett Films: Correlation with Mesoscopic Structure - Archive ouverte HAL
Article Dans Une Revue Langmuir Année : 2013

Limited Propagation of Lattice Distortion in Trilayer Langmuir-Blodgett Films: Correlation with Mesoscopic Structure

Sophie Cantin
Françoise Perrot
  • Fonction : Auteur
  • PersonId : 832467
Philippe Fontaine
Michel Goldmann

Résumé

The structure of trilayer Langmuir-Blodgett (LB) films on oxidized silicon wafers has been investigated using grazing incidence X-ray diffraction at various incidence angles and atomic force microscopy (AFM). These films are. formed by two behenic acid (BA) layers and a third monolayer of,;amphiphilic molecules having different architectures. These molecules have the same polar head and differ from each other by the chain; either saturated or unsaturated hydrogenated or semi-fluorinated: The structure of the first BA monolayer appears unchanged in all cases, whereas a condensation of the second BA. monolayer. is evidenced. when the third layer. is not formed with the saturated hydrogenated chain. We interpret this condensation as resulting from the mismatch between the lattices of the second BA layer and the external monolayer, possibly associated with the formation of a new monolayer-air interface creating line tension effects. Line tension estimation has also been made from the size of the holes observed in the different LB films.
Fichier non déposé

Dates et versions

hal-01238965 , version 1 (07-12-2015)

Identifiants

Citer

Sophie Cantin, Françoise Perrot, Philippe Fontaine, Michel Goldmann. Limited Propagation of Lattice Distortion in Trilayer Langmuir-Blodgett Films: Correlation with Mesoscopic Structure. Langmuir, 2013, 29 (35), pp.11046-11054. ⟨10.1021/la401860j⟩. ⟨hal-01238965⟩
80 Consultations
0 Téléchargements

Altmetric

Partager

More