School of Physics and Astronomy, University of Nottingham, University Park, Nottingham, U.K..
Langmuir. 2010 Mar 16;26(6):3972-4. doi: 10.1021/la903335v.
The effect on 2D molecular crystallization caused by the addition of propylthioether side groups to the 3,4,9,10-perylenetetracarboxylic dianhydride (PTCDA) molecule is investigated using scanning tunneling microscopy (STM). The molecule was deposited from 1-phenyloctane onto highly oriented pyrolytic graphite (HOPG) and imaged at the liquid-solid interface. We observe a different structure to previously reported arrangements of PTCDA due to the presence of the propylthioether side groups which inhibits the formation of the herringbone phase. A model, supported by calculations based on density functional theory, is proposed in which molecules form rows stabilized by hydrogen bonding.
用扫描隧道显微镜（STM）研究了将丙硫醚侧基添加到 3,4,9,10-苝四羧酸二酐（PTCDA）分子中对 2D 分子结晶的影响。该分子从 1-苯基辛烷沉积到高取向热解石墨（HOPG）上，并在液-固界面进行成像。由于存在丙硫醚侧基，我们观察到与之前报道的 PTCDA 排列结构不同，这抑制了鱼骨相的形成。提出了一个模型，该模型得到了基于密度泛函理论的计算的支持，其中分子形成由氢键稳定的行。
