Structure and ionization state of DPPG monolayers
نویسندگان
چکیده
Electrostatic interactions play an important role in the functioning of biological membranes. Membranes often bear a negative charge, mainly due to a presence of acidic phospholipids as well as membrane proteins and gangliosides. Therefore, it is important to study the phase behavior and structure of acidic phospholipids in dependence on pH, ionic strength and the nature of counterions (size, charge, hydrophobicity). Modern experimental techniques as grazing incidence X-ray diffraction (GIXD), X-ray reflectivity (XR), surface potential measurements and Infrared Reflection Absorption Spectroscopy (IRRAS) allow the determination of the ionization state in a Langmuir monolayers at the air/water interface.
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تاریخ انتشار 2004