Structure determination of two-dimensional adenine crystals on graphite

被引:91
作者
Freund, JE
Edelwirth, M
Krobel, P
Heckl, WM
机构
[1] Institut für Kristallographie und Mineralogie der Universität München, Theresienstrasse 41
来源
PHYSICAL REVIEW B | 1997年 / 55卷 / 08期
关键词
D O I
10.1103/PhysRevB.55.5394
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
Two-dimensional molecular-packing structure and monolayer preparation of adenine adsorbates on the graphite (0001) surface have been studied using scanning tunneling microscopy, low-energy electron diffraction, and thermal-desorption spectroscopy. By combining real-space images and diffraction data a close-packed hydrogen-bonded network of adenine dimers is proposed, containing two dimers in a unit eel with the symmetry group p2gg. The energy-minimized molecular arrangement could be determined by force field calculations. Adenine adsorbate layers were prepared by sublimation in UHV.
引用
收藏
页码:5394 / 5397
页数:4
相关论文
共 19 条