The dependence of Co nanoparticle sizes on the ratio of surfactants and the influence of different crystal sizes on magnetic properties
文献类型：期刊论文
| 作者 | Su, YK ; Shen, CM ; Yang, TZ ; Yang, HT ; Gao, HJ ; Li, HL |
| 刊名 | APPLIED PHYSICS A-MATERIALS SCIENCE & PROCESSING
 |
| 出版日期 | 2005 |
| 卷号 | 81期号:3页码:569 |
| 关键词 | NANOCRYSTAL SUPERLATTICES ROOM-TEMPERATURE COBALT |
| ISSN号 | 0947-8396 |
| 通讯作者 | Li, HL (reprint author), Lanzhou Univ, Dept Chem, Lanzhou 730000, Peoples R China. |
| 中文摘要 | Atomic force microscopy(AFM) has been used to image arrays of molecules at the surface of DL-valine crystals. AFM images of DL-valine show that D- and L- molecular pairs formed from a DL-racemic mixture are exclusively homochiral. There are two different conclusions about the crystal structure of DL-valine with the data of X-ray crystallography. First, the structure of DL-valine was solved in the monoclinic space group P2(1)/c. Second, the crystal structure of DL-valine has been refined in the centrosymmetric space group P (1) over bar and indicated a triclinic rather than a monoclinic space group. The present work emphasizes to solve the contradicting observations of space group and to provide direct evidence for chiral recognition at molecular level. DL-valine molecules {001} are all in zwitterionic form with the isopropyl groups close to the surface and methyl groups on the top site, showing an ordered molecular morphology of triclinic unit cells, which are in fair agreement with the X-ray diffraction data. The application of AFM to the investigation of protein's origins and a molecular-level illustration of chiral recognition at a periodic 2D surface structure of racemic crystals is discussed. |
| 收录类别 | SCI |
| 语种 | 英语 |
| 公开日期 | 2013-09-23 |
| 源URL | [http://ir.iphy.ac.cn/handle/311004/44983]  |
| 专题 | 物理研究所_物理所公开发表论文_物理所公开发表论文_期刊论文 |
| 推荐引用方式 GB/T 7714 | Su, YK,Shen, CM,Yang, TZ,et al. The dependence of Co nanoparticle sizes on the ratio of surfactants and the influence of different crystal sizes on magnetic properties[J]. APPLIED PHYSICS A-MATERIALS SCIENCE & PROCESSING,2005,81(3):569. |
| APA | Su, YK,Shen, CM,Yang, TZ,Yang, HT,Gao, HJ,&Li, HL.(2005).The dependence of Co nanoparticle sizes on the ratio of surfactants and the influence of different crystal sizes on magnetic properties.APPLIED PHYSICS A-MATERIALS SCIENCE & PROCESSING,81(3),569. |
| MLA | Su, YK,et al."The dependence of Co nanoparticle sizes on the ratio of surfactants and the influence of different crystal sizes on magnetic properties".APPLIED PHYSICS A-MATERIALS SCIENCE & PROCESSING 81.3(2005):569. |
入库方式： OAI收割
来源：物理研究所
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