| Eu3+和Al3+离子对DPPC人工膜脂双层主相变温度的影响 |
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| 引用本文： | 徐洪文,傅素冉,张束空,许振华. Eu3+和Al3+离子对DPPC人工膜脂双层主相变温度的影响[J]. 高等学校化学学报, 1998, 19(10): 1553-1555 |
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| 作者姓名： | 徐洪文 傅素冉 张束空 许振华 |
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| 作者单位： | 1. 烟台大学应用化学系, 烟台, 264005;2. 北京大学化学系, 北京, 100871 |
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| 基金项目： | 国家自然科学基金，2870032， |
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| 摘 要： | 天然生物膜组成复杂,直接用于研究困难较大.由于天然生物膜中脂分子的行为与人工脂双层膜的行为十分类似,故我们用单一磷脂制备人工脂双层膜来研究金属离子对其主相变温度的影响.
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| 关 键 词： | 二棕榈酰磷脂酰胆碱(DPPC) 主相变温度(Tm) 傅里叶变换红外光谱 核磁共振谱 |
| 收稿时间： | 1997-10-27 |
| 修稿时间： | 1997-10-27 |
Studies on the Influence of Eu3+ and Al3+ Ions to the Temperature of the Gel to Liquid-crystalline of DPPC Bilayer |
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| XU Hong-Wen,FU Su-Ran,ZHANG Shu-Kong,XU Zhen-Hua. Studies on the Influence of Eu3+ and Al3+ Ions to the Temperature of the Gel to Liquid-crystalline of DPPC Bilayer[J]. Chemical Research In Chinese Universities, 1998, 19(10): 1553-1555 |
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| Authors: | XU Hong-Wen FU Su-Ran ZHANG Shu-Kong XU Zhen-Hua |
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| Affiliation: | 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 |
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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. |
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| Keywords: | 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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