Direct observation of surface structure of D-alanine and D-/L-valine crystals by atomic force microscopy and comparison with X-ray diffraction analysis
文献类型：期刊论文
| 作者 | Wang, WQ ; Gong, Y ; Liang, Z ; Sun, FL ; Shi, DX ; Gao, HJ ; Lin, X ; Jiang, P ; Wang, ZM |
| 刊名 | SURFACE SCIENCE
 |
| 出版日期 | 2002 |
| 卷号 | 512期号:3页码:L379 |
| 关键词 | AMINO-ACIDS ADSORPTION CU(001) 23-K |
| ISSN号 | 0039-6028 |
| 通讯作者 | Wang, WQ: Peking Univ, Dept Appl Chem, Coll Chem & Mol Engn, Beijing 100871, Peoples R China. |
| 中文摘要 | A direct observation of surface morphology characterization of the crystals of D-alanine, D-valine and L-valine at molecular scale was presented by atomic force microscopy (AFM). The crystal structures of D-alanine, L-alanine and L-valine have been determined by X-ray diffraction methods. D- and L-alanine crystallize in the orthorhombic space group P2(1)2(1)2(1), Z = 4 with the unit-cell dimensions a = 6.0073(5) Angstrom/6.0095(5) Angstrom, b = 12.3030(7) Angstrom/12.3388(7) Angstrom, c = 5.7732(4) Angstrom/5.7904(3) Angstrom, alpha = beta = gamma = 90degrees and L-valine crystallizes in the monoclinic space group P2(1), Z = 4 with lattice constants a = 9.6737(5) Angstrom, b = 5.2664(3) Angstrom, c = 12.0196(6) Angstrom, alpha = gamma = 90degrees, beta = 90.722(3)degrees at 270 K. The L-valine molecule was found to take two different conformations gauche I and trans form. AFM images clearly show an ordered molecular morphology of orthorhombic alanine and monoclinic valine unit cells, which are in fair agreement with the X-ray diffraction data. (C) 2002 Elsevier Science B.V. All rights reserved. |
| 收录类别 | SCI |
| 语种 | 英语 |
| 公开日期 | 2013-09-17 |
| 源URL | [http://ir.iphy.ac.cn/handle/311004/36065]  |
| 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 | Wang, WQ,Gong, Y,Liang, Z,et al. Direct observation of surface structure of D-alanine and D-/L-valine crystals by atomic force microscopy and comparison with X-ray diffraction analysis[J]. SURFACE SCIENCE,2002,512(3):L379. |
| APA | Wang, WQ.,Gong, Y.,Liang, Z.,Sun, FL.,Shi, DX.,...&Wang, ZM.(2002).Direct observation of surface structure of D-alanine and D-/L-valine crystals by atomic force microscopy and comparison with X-ray diffraction analysis.SURFACE SCIENCE,512(3),L379. |
| MLA | Wang, WQ,et al."Direct observation of surface structure of D-alanine and D-/L-valine crystals by atomic force microscopy and comparison with X-ray diffraction analysis".SURFACE SCIENCE 512.3(2002):L379. |
入库方式： OAI收割
来源：物理研究所
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