棒状共轭分子薄膜的成核与生长
Nucleation and growth of thin films of rod--like conjugated molecules
摘要：
由小分子形成的薄膜在不同的技术领域中迅速获得重要性。为了解释它们的生长，零维原子作为成膜粒子的方法被应用。然而，在有机薄膜生长中，结构单元的维度起作用。使用的特殊情况下的模型分子对-Sexiphenyl，我们将强调的挑战，从各向异性和一维性质的积木。将讨论与其他棒状分子的差异或共同特征。这组分子和相关的增长模式遇到的典型形态将进行调查。特别注意的是给予之间的过渡平躺和直立的取向的积木在成核。我们将进一步讨论控制分子取向的方法，并定性和定量地描述所涉及的扩散过程。
英文摘要：
Thin films formed from small molecules rapidly gain importance in different technological fields. To explain their growth, methods developed for zero--dimensional atoms as the film forming particles are applied. However, in organic thin film growth the dimensionality of the building blocks comes into play. Using the special case of the model molecule para--Sexiphenyl, we will emphasize the challenges that arise from the anisotropic and one--dimensional nature of building blocks. Differences or common features with other rodlike molecules will be discussed. The typical morphologies encountered for this group of molecules and the relevant growth modes will be investigated. Special attention is given to the transition between flat lying and upright orientation of the building blocks during nucleation. We will further discuss methods to control the molecular orientation and describe the involved diffusion processes qualitatively and quantitatively.
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