Zusammenfassung: Mittels Differential-Scanning-Kalorimetrie wurde der Einflut~ des chemischen Aufbaus der Kopfgruppe von 14 Derivaten der 1,2-Di-O-hexadecylglycero-3-phosphors~iure im wasserreichen heterogenen Zweiphasengebiet untersucht. Es wurden die Phasenumwandlungstemperaturen und -enthalpien bestimmt und verglichen. Zusammenh~inge zwischen der Variation der Kopfgruppenstruktur und den Trends in den Umwandlungsparametern werden diskutiert.Abstract: A series of hexadecylglycerophospholipids was studied by differential scanning calorimetry in the heterogeneous two-phase region (50 wt. % water). The phase transition temperatures and enthalpies of the hydrated phospholipids were determined and compared. Correlations between the chemical structure of the polar headgroups and the thermodynamical parameters of the phase transitions were discussed.
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