Physics of Interfaces and Nanomaterials, MESA+ Institute for Nanotechnology, University of Twente, P.O. Box 217, NL-7500AE Enschede, The Netherlands.
J Chem Phys. 2011 Sep 28;135(12):124706. doi: 10.1063/1.3641893.
The growth of 4,4(')-biphenyldicarboxylic acid (BDA) on Cu(001) has been studied using low energy electron microscopy and selective area low energy electron diffraction. The emergence of large islands and hydrogen bonding to perpendicularly oriented, adjacent molecules is confirmed. The two benzene rings of adsorbed BDA are twisted along the molecular axis. Unconventional growth of the domains, followed by a second nucleation stage, is observed at room temperature. This unanticipated feature is attributed to the accumulation of stress in the islands. Ostwald ripening in the films and the decay of BDA domains at 448 K exhibits features that are consistent with diffusion limited behavior.
使用低能电子显微镜和选区低能电子衍射研究了 4,4(')-联苯二甲酸（BDA）在 Cu(001)上的生长。确认了大岛的出现以及与垂直取向的相邻分子的氢键。吸附的 BDA 的两个苯环沿着分子轴扭曲。在室温下观察到非传统的畴生长，然后是第二核化阶段。这种意外的特征归因于岛屿中应力的积累。薄膜中的奥斯特瓦尔德熟化和 448 K 下 BDA 畴的衰减表现出与扩散限制行为一致的特征。
