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Epitaxy of organic crystal films: Phenanthrene on potassium acid phthalate

机译：有机晶体膜的外延：邻苯二甲酸钾盐上的菲

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摘要

The growth of epitaxial layers of phenanthrene from the vapor on cleaved (010) potassium acid phthalate (KAP) single-crystal substrates is reported. Using a growth cell designed for precise control of supersaturation and substrate temperature, the deposition process was followed in situ using optical microscopy. After epitaxial three-dimensional (3D) nucleation at high supersaturation and subsequent growing together of the nuclei at low supersaturation, closed crystalline phenanthrene layers were obtained. The produced crystal film was composed of four orientational domains, being two pairs of enantiomorphs 180 degrees rotated with respect to each other. The epitaxy is explained by a structural match at the KAP (010)-phenanthrene (001) contact faces, which are both terminated by a pseudo-hexagonal pattern of more or less perpendicular hexagonal aromatic rings.
机译：据报道，在裂解的（010）邻苯二甲酸钾酸钾（KAP）单晶衬底上，从蒸气中生长了菲的外延层。使用设计用于精确控制过饱和度和基质温度的生长池，使用光学显微镜原位跟踪沉积过程。在高过饱和度外延三维（3D）成核并随后在低过饱和度使核一起生长后，获得了封闭的结晶菲层。所产生的晶体膜由四个取向域组成，是相对于彼此旋转180度的两对对映体。外延是通过在KAP（010）-菲（001）接触面上的结构匹配来解释的，它们都以或多或少垂直的六方芳族环的拟六边形图案终止。

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