acenes up to heptacene have been isolated in bulk, with nonacene being the largest acene detected to date. Herein we use on‐surface assisted reduction of tetraepoxy decacene precursors on Au(111) as the key step to generate unprecedented decacene which is visualized and its electronic resonances studied by scanning tunneling microscopy (STM) and spectroscopy (STS).
Tetracene octaesters, which were prepared by twofold [2+2+2] cocyclization, were isolated as red, orange, and orange-yellow solids for the methyl, ethyl, and propyl ester derivatives, respectively. X-Ray crystallographic analysis reveals that the difference in solid-state color arises owing to differences in molecular packing.
通过两次[2+2+2]共环化制备的并四苯八酯,分离出红色、橙色和橙黄色固体,分别为甲酯、乙酯和丙酯衍生物。 X 射线晶体学分析表明,固态颜色的差异是由于分子堆积的差异而产生的。
Imaging the electronic structure of on-surface generated hexacene
作者:Justus Krüger、Frank Eisenhut、José M. Alonso、Thomas Lehmann、Enrique Guitián、Dolores Pérez、Dmitry Skidin、Florian Gamaleja、Dmitry A. Ryndyk、Christian Joachim、Diego Peña、Francesca Moresco、Gianaurelio Cuniberti
DOI:10.1039/c6cc09327b
日期:——
Surface-assisted reduction of specially designed air-stable precursors allows us to study single hexacene molecules on Au(111) by scanning tunneling microscopy and spectroscopy, mapping with intramolecular resolution their extended electronic eigenstates.
as the starting materials (isoalkyl: isopropyl, isobutyl, and isopentyl). The tetracene molecules exhibited crystallochromy: The solid-state colors of the isopropyl, isobutyl, and isopentyl derivatives were yellow, red, and orange-yellow, respectively. In contrast, there were no marked differences in the opticalproperties of these compounds in solution. The isopropyl derivative exhibited the highest