Linear chain formation of Alq3 on a low-temperature Cu(111) surface
Linear chain formation of Alq3 on a low-temperature Cu(111) surface
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Alq3在低温Cu(111)表面上线性链的形成
DOI：
10.1021/jp811454t
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发表时间：
2009
期刊：
影响因子：
--
通讯作者：
T. Yokoyama
中科院分区：
文献类型：
--
作者：
H. Iseki;K. Sinozaki;T. Yokoyama
用低温扫描隧道显微镜观察到，在低于250K的温度下，Alq3在其表面形成了长的线状链，线状链具有相同的宽度，由间隔约0.75 nm的两排组成，并在[112̅]方向及其与其等价的方向上被放大。在这一临界沉积温度以上，孤立的单分子是随机分布的，即使在78K也是非常可移动的。线状链的形成应该与Alq3只在低温下存在的亚稳态吸附结构有关。
By using low-temperature scanning tunneling microscopy, we show that long linear chains of Alq3are formed on a Cu(111) surface at a temperature of less than 250 K. The linear chains include an identical width, composed of double rows separated by about 0.75 nm, and are enlarged in the [112̅] direction and its equivalent directions of Cu(111). Above this critical deposition temperature, isolated single molecules are randomly distributed and are very mobile on the surface even at 78 K. The formation of the linear chains should be associated with the metastable adsorption structures of Alq3existing only at low temperature.