Influence of α-branched fatty acid chains on the thermotropic behaviours of 1-O-acyl-2-O-hexadecyl-glycerophosphocholines

✍ Scribed by Gerald Brezesinski; Bodo Dobner; Hans-Dieter Dörfler; Michael Fischer; Steffi Haas; Peter Nuhn

• Publisher: Elsevier Science
• Year: 1987
• Tongue: English
• Weight: 345 KB
• Volume: 43
• Category: Article
• ISSN: 0009-3084
• DOI: 10.1016/0009-3084(87)90022-3

✦ Synopsis

Phosphatidylcholines containing a branched-chain fatty acid in l-position at the glycerol backbone were synthesized and characterized by differential scanning calorimetry. We find that their thermotropic phase behaviour depends on the length of the branches. The results show that, depending on the side-chain length, the gel-to4iquid-erystalline phase transition temperatures (Tin) pass through a minimum. The systematic change of the Tin-values ts connected with a modified temperature dependence of the apparent molar heat capacities,