Temperature influence on the dipalmitoylphosphatidylcholyne - Model membranes studied by FTIR

Korkmaz F., Severcan F., Aflori M., Dorohoi D. O.

DIGEST JOURNAL OF NANOMATERIALS AND BIOSTRUCTURES, vol.3, no.2, pp.55-61, 2008 (SCI-Expanded) identifier

  • Publication Type: Article / Article
  • Volume: 3 Issue: 2
  • Publication Date: 2008
  • Journal Name: DIGEST JOURNAL OF NANOMATERIALS AND BIOSTRUCTURES
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus, Academic Search Premier, Central & Eastern European Academic Source (CEEAS)
  • Page Numbers: pp.55-61
  • Middle East Technical University Affiliated: Yes

Abstract

Lyotropic liquid crystals are realized from certain concentration of amphiphilic molecules, such as phospholipids, in water. The specific interactions in which water is involved are very important for model-membrane stability. Dipalmitoylphosphatidylcholyne (DPPC) model membranes have been studied by FTIR technique at different temperatures in the spectral range {2500 - 4000} cm(-1). A Gaussian deconvolution has been performed in order to study the water behaviour from the point of view of hydrogen-bond formation between water molecules and both the hydrophilic heads of phospholipids and the components of buffer solution. This study contributes to the understanding the mechanisms which assure the model membrane stability.