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迟力峰教授课题组与德国吉森大学André Schirmeisen教授、中科院物理所杜世萱研究员合作在Nature Communications上发表论文
发布时间:2018-08-22 点击:52

题目:

Symmetry Breakdown of 4,4-Diamino-p-Terphenyl on A Cu(111) Surface by Lattice Mismatch


作者:

Qigang Zhong1, Daniel Ebeling2,*, Jalmar Tschakert2, Yixuan Gao3, Deliang Bao3, Shixuan Du3,*, Chen Li4, Lifeng Chi1,* & André Schirmeisen2


单位:

1Institute of Functional Nano & Soft Materials (FUNSOM), Jiangsu Key Laboratory for Carbon-Based Functional Materials and Devices, Soochow University, Suzhou 215123, P. R. China.

2Institute of Applied Physics, Justus-Liebig University, Heinrich-Buff-Ring 16, 35392 Giessen, Germany.

3Institute of Physics & University of Chinese Academy of Sciences, Chinese Academy of Sciences, Beijing 100190, P. R. China.

4School of Environment and Civil Engineering, Dongguan University of Technology, Dongguan 523808, P. R. China.


摘要:

Site-selective functionalization of only one of two identical chemical groups within one molecule is highly challenging, which hinders the production of complex organic macromolecules. Here we demonstrate that adsorption of 4,4-diamino-p-terphenyl on a metal surface leads to a dissymmetric binding affinity. With low temperature atomic force microscopy, using CO-tip functionalization, we reveal the asymmetric adsorption geometries of 4,4-diamino-p-terphenyl on Cu(111), while on Au(111) the symmetry is retained. This symmetry breaking on Cu(111) is caused by a lattice mismatch and interactions with the subsurface atomic layer. The dissymmetry results in a change of the binding affinity of one of the amine groups, leading to a non-stationary behavior under the influence of the scanning tip. Finally, we exploit this dissymmetric binding affinity for on-surface self-assembly with 4,4-diamino-p-terphenyl for side-preferential attachment of 2-triphenylenecarbaldehyde. Our findings provide a new route towards surface-induced dissymmetric activation of a symmetric compound.


影响因子:

12.353


分区情况:

一区


链接:

https://www.nature.com/articles/s41467-018-05719-y


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