A low energy electron microscopy study of the initial growth, structure, and thermal stability of 4,4 '-biphenyldicarboxylic acid domains on Cu(001)

作者：Khokhar Fawad S; van Gastel Raoul; Schwarz Daniel; Zandvliet Harold J W; Poelsema Bene^*

来源：Journal of Chemical Physics, 2011, 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.

• 出版日期2011-9-28