CJCU

Chem. J. Chinese Universities ›› 1998, Vol. 19 ›› Issue (10): 1553.

• Articles • Previous Articles     Next Articles

Studies on the Influence of Eu3+ and Al3+ Ions to the Temperature of the Gel to Liquid-crystalline of DPPC Bilayer

XU Hong-Wen1, FU Su-Ran1, ZHANG Shu-Kong2, XU Zhen-Hua2   

  1. 1. Department of Applied Chemistry, Yantai University, Yantai, 264005;
    2. Department of Chemistry, Peking University, Beijing, 100871;
    2. Department of Chemistry, Peking University, Beijing, 100871
  • Received:1997-10-27 Online:1998-10-24 Published:1998-10-24

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Abstract: The experimental data on FTIRand NMRspectra show that the interaction of Eu 3+ and Al 3+ ions with DPPCbilayer can alter the temperature of the gel to liquid-crystalline phase transition of DPPCbilayer (increase of about 3 ℃). It can be found that Eu 3+ ion binding to DPPCbilayer makes the radius of DPPCbilayer small, while Al 3+ ion binding to DPPCbilayer makes it large. The complex reaction of Eu 3+ and Al 3+ ion with DPPCbilayer leads to a structual change of the polar head group in DPPCbilayer.

Key words: DPPC(1,2-dipalmitoyl-Sn-glycers-3-phosphocholine), Temperature of the gel to liquid-crystalline phase transition, Fourier transform infrared spectroscopy, NMR spcctra(Ed.: M,G)

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