Study on the lifetime of M-intermediate of bacteriorhodopsin film chemically modified with CeO2 nanoparticles
文献类型：期刊论文
| 作者 | Wang, Liping; Li, Baofang; Hong, Guangyan |
| 刊名 | COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
 |
| 出版日期 | 2007-03-15 |
| 卷号 | 296期号:1-3页码:57-61 |
| 关键词 | Bacteriorhodopsin M-intermediate Ceo2 Nanoparticles Chemical Modification Lifetime |
| ISSN号 | 0927-7757 |
| DOI | 10.1016/j.colsurfa.2006.09.023. |
| 英文摘要 | The characteristics of intermediates of bacteriorhodopsin (bR) can be verified by chemical modification of its surroundings. CeO2 nanoparticles, which were obtained using water-in-oil (W/O) microemulsion and calcined at various temperatures, were used as chemical additive for the modification of bR. X-ray diffraction (XRD) shows that the mean particle sizes for the samples calcined at 500 and 800 degrees C are approximately 10 and 30 nm, respectively. We prepared CeO2 nanoparticle modified poly(vinyl alcohol) (bR-PVA) films with an optical density of about 1.5 at the ground state. It is observed that the lifetime of the Wintermediate for the modified films is prolonged compared with that of the unmodified ones, and the lifetime increases with decreasing particle size. A probable mechanism, which is likely to involve effective molecular interactions between the CeO2 nanoparticles and the bR molecules, is discussed. The hydroxyl groups, which might arise from the interaction between the nanoparticles and the surrounding water molecules, help to lower the ability of the Schiff base of uptaking protons in the Wintermediate. The results indicate that controlling the interactions between biomolecules and various nanomaterials would enlarge the functionality and the range of the application of nanoparticles. (c) 2006 Elsevier B.V. All rights reserved. |
| 语种 | 英语 |
| WOS记录号 | WOS:000245342400008 |
| 出版者 | ELSEVIER SCIENCE BV |
| 源URL | [http://ir.iccas.ac.cn/handle/121111/62467]  |
| 专题 | 中国科学院化学研究所 |
| 通讯作者 | Wang, Liping |
| 作者单位 | 1.Chinese Acad Sci, Ctr Mol Sci, Inst Chem, Beijing 100080, Peoples R China 2.Univ Sci & Technol Beijing, Sch Mat Sci & Engn, Dept Phys & Chem, Beijing 100083, Peoples R China 3.Chinese Acad Sci, Inst Chem, Ctr Mol Sci, Beijing 100080, Peoples R China 4.Chinese Acad Sci, Changchun Inst Appl Chem, Key Lab Rare Earth Phys & Chem, Changchun 130022, Peoples R China |
| 推荐引用方式 GB/T 7714 | Wang, Liping,Li, Baofang,Hong, Guangyan. Study on the lifetime of M-intermediate of bacteriorhodopsin film chemically modified with CeO2 nanoparticles[J]. COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS,2007,296(1-3):57-61. |
| APA | Wang, Liping,Li, Baofang,&Hong, Guangyan.(2007).Study on the lifetime of M-intermediate of bacteriorhodopsin film chemically modified with CeO2 nanoparticles.COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS,296(1-3),57-61. |
| MLA | Wang, Liping,et al."Study on the lifetime of M-intermediate of bacteriorhodopsin film chemically modified with CeO2 nanoparticles".COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS 296.1-3(2007):57-61. |
入库方式： OAI收割
来源：化学研究所
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