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具有分子五边形星星的表面的轮网

Quirin Stöckl¹, Davide Bandera, Craig S Kaplan

¹Empa, Swiss Federal Laboratories for Materials Science and Technology , 8600 Dübendorf, Switzerland.

Journal of the American Chemical Society

|December 31, 2013

概括

在铜表面上,状五甲烯分子自组装成两个有序的相. 这些结构类似于网状轮和密集的恒星包装,表明复杂的表面组织.

科学领域:

表面科学是一门学科.
超分子化学超分子化学
有机纳米技术有机纳米技术

背景情况:

冠烯衍生物是先进纳米材料的关键组成部分.
控制表面上的分子自我组装对于设计功能纳米结构至关重要.

研究的目的:

为了研究的1,3,5,7,9-pentaphenylcorannulene的表面组装.
为了识别在Cu{111}表面上形成的有序相和结构图案.

主要方法:

使用扫描道显微镜 (STM) 可视化分子排列.
实验是在低温 (60K) 进行的,以稳定有序的相位.

主要成果:

观察到两种不同的长距离的pentaphenylcorannulene的有序相.
分子组件形成了复杂的网络,类似于网状轮.
一个观察到的结构模仿了最密集的五倍对称恒星.

结论:

合性五甲素分子在Cu上自组成复杂的,有序的结构.
很可能存在的种族和同体相的共存表明在组装过程中存在立体选择性相互作用.
观察到的图案为设计功能性超分子架构提供了洞察力.

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