Higher Acenes by On-Surface Dehydrogenation: From Heptacene to Undecacene.

Higher Acenes by On-Surface Dehydrogenation: From Heptacene to Undecacene.
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DOI:
10.1002/anie.201802040
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发表时间:
2018-08-13
期刊:
Angewandte Chemie (International ed. in English)
影响因子:
--
通讯作者:
Echavarren AM
Echavarren AM
中科院分区:
其他
文献类型:
--
作者:
Zuzak R;Dorel R;Kolmer M;Szymonski M;Godlewski S;Echavarren AM

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通过部分饱和前体的表面脱氢,已经开发了一种合成一系列高级并苯直到先前未报道的十一并苯的统一方法。这些分子可以通过扫描隧道显微镜和原子力显微镜(STM/AFM)的尖端进行原子操作以及通过表面退火转化为母体并苯。生成的并苯的结构已经通过高分辨率非接触AFM成像可视化,并且传输带隙随着稠合苯环数目的增加的演变已经基于扫描隧道光谱(STS)测量确定。
A unified approach to the synthesis of the series of higher acenes up to previously unreported undecacene has been developed through the on‐surface dehydrogenation of partially saturated precursors. These molecules could be converted into the parent acenes by both atomic manipulation with the tip of a scanning tunneling and atomic force microscope (STM/AFM) as well as by on‐surface annealing. The structure of the generated acenes has been visualized by high‐resolution non‐contact AFM imaging and the evolution of the transport gap with the increase of the number of fused benzene rings has been determined on the basis of scanning tunneling spectroscopy (STS) measurements.
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