Audio to microwave frequency dielectric study of the pretransition region in DPL-water systems |
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| Authors: | C Cametti F De Luca M A Macrì B Maraviglia P Sorio |
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| Institution: | Dipartimento di Fisica , Università di Roma ‘La Sapienza' , 00185, Roma, Italy |
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| Abstract: | Abstract The phospholipid–water mixtures are used as model systems to investigate the structure and function of biological membranes. The dielectric behaviour of DPPC–water and DPPE–water systems was explored at audio (≥ 2kHz) and microwave (10 GHz) frequencies versus temperature. Particular care was devoted to the pretransition below the main gel-liquid-crystalline phase transition. A possible interpretation of the pretransition mechanism is given in terms of capillary waves. |
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