| 血红素在有序分子膜中的行为研究 |
| The Investigation of Behavior of Heme in Ordered Molecular Films |
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| 摘要: 本文研究了血红素(Heme)在硬脂酸(SA)单分子膜和Langmuir-Blodgett(LB)膜中的行为。Heme及其与SA的混合物均能在纯水亚相形成稳定的单分子膜。当摩尔分数xHeme<0.3时,Heme以”面接触亚相“的方式平躺在SA所形成的单分子膜中;而当xHeme≥0.3时,Heme以其”边接触亚相“的方式自身成膜。通过在不同表面压和不同摩尔比下沉积的Heme-SA混合LB膜的紫外-可见光谱、偏振紫外一可见光谱、小角X-射线衍射和荧光光谱,表征了血红素 |
| 关键词: Heme 混合单分子膜 混合LB膜 |
| 基金项目: 国家自然科学基金重点项目(No.20031010);教育部重点科学技术项目(1998－121);广东省自然科学基金(No.9 |
| Abstract: The monolayer formation and the deposition of Langmuir-Blodgett films of the mixtures of Heme and stearic acid with different molar ratio were investigated.The result shows that they can form stable monolayer on pure water subphase.When xHeme ≥0.3, Heme lies on a ‘face on' position in the monolayer.When xHeme≥0.3, Heme lies on an ‘edge on' position.The Langmuir- Blodgett (LB ) films of Heme and its mixtures with stearic acid were deposited on the hydrophilic quartz plates.Some information about the orientation of Heme in LBfilms were obtained from the UV-visible and polarized UV-visible spectra, low angle X-ray diffraction, and fluorescent spectra.The absorbance of the mixed LB films of Heme-SA is greatly increased with the increase of deposition pressure or the molar fraction of Heme.Although the increase of absorbance may be resulted from the increase of the Heme concentration in LBfilms at higher surface pressure, most of the increase was resulted from the ordered arrangement of Heme molecules.These results provide a good guidance for the further research and applications of Heme derivatives. |
| Keywords: Heme mixed monolayer mixed Langmuir-Blodgett film |
| 投稿时间：2000-12-31 修订日期：2001-02-09 |
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| 欧阳健明.血红素在有序分子膜中的行为研究[J].无机化学学报,2001,17(3):349-354. |
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