Yiqi Zhang | Recent advances in on-surface chemistry of alkyne derivatives: novel reactions and functional architectures

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报告题目:Recent advances in on-surface chemistry of alkyne derivatives: novel reactions and functional architectures

报告人:Dr. Yiqi Zhang  Physics Department, Technical University of Munich

报告时间:2019年05月06日(周一)10:00

报告地点:物理研究所M楼253会议室

报告摘要:

Molecule-based nanosystems are highly promising for future nanotechnological applications [1]. Interfacial molecular chemistry combined with advanced characterization techniques provides powerful routes toward atomically precise construction of versatile architectures with deep insight into their formation mechanisms and unique functionalities. In this talk, three recent breakthroughs regarding interfacial engineering carbon-rich nanostructures using alkyne derivatives [2] are presented. i) We achieve preparation of regular single-layer organometallic graphdiyne-related networks reaching micrometer range via a gas-mediated reaction [3]. ii) We introduce a new approach combining supramolecular self-assembly and convergent multistep chemical transformation of a simple dissymmetric precursor to access the rare semiregular (3.4.6.4) Archimedean tiling. iii) We unveil a proton tunneling process leading to a highly chemoselective ring-formation proceeding at surprisingly low temperatures.

References:

[1] J. V. Barth, Annu. Rev. Phys. Chem. 58, 375 (2007).

[2] F. Klappenberger, Y.-Q. Zhang, et al., Acc. Chem. Res. 48, 2140 (2015).

[3] Y.-Q. Zhang, T. Paintner, et al., J. Am. Chem. Soc. 141, 5087 (2019).

[4] Y.-Q. Zhang, M. Paszkiewicz, et al., Nat. Chem. 10, 296 (2018).

报告人简介:

Yiqi Zhang obtained his PhD in condensed matter physics from the University of Science and Technology of China (2008), where he studied vortex dynamics in high-Tc superconductors. During his postdoctoral activities at the Max Planck Institute of Microstructure Physics, he employed spin-polarized STM to investigate complex surface magnetism. In 2011, he moved to Technical University of Munich, where he is currently a senior researcher and the group leader in the Chair of Molecular Nanoscience and Surface Chemical Physics in the Physics Department. His present research interest includes surface-templated synthesis of carbon-rich nanoarchitectures, particularly focusing on graphdiyne-related materials.