报告人：倪勇 副教授（南方科技大学）

时 间： 2026年11月06日（周五）上午 10:00

地 点：良乡校区 理学楼B203会议室

摘要：

“电子结构”和“拓扑结构”是有机共轭分子功能材料的两个根本要素，发展具有特殊拓扑结构的π共轭分子材料，有望实现两者的完美统一，是合成化学、拓扑物理及材料科学交叉领域的重要前沿，但其巨大的环张力和空间形变使合成极为困难，多个理论预测的结构长期未能获得实验验证。针对这一挑战，我们发展了分子‘外缝合’的合成策略，通过外围精准环化构筑多重扭曲的分子纳米碳；同时发展了分子“内折叠“的合成策略，实现了对高张力体系的精准构建，攻克了领域内数十年的合成难题，具体包括quintulene（1984年提出）和Möbius kekulene（1994年提出）的精准合成。在此基础上，我们系统探讨了分子拓扑结构、拓扑电子态、光电磁性质之间的内禀联系，并结合稳态/瞬态光谱、电子顺磁共振与理论计算，阐明了空间电子耦合相互作用与拓扑电子态，对吸收/发射光谱、自旋及磁行为的调控机制，为探索拓扑电子态驱动的光电磁功能调控建立了分子层面的实验与理论依据。

[1] C. Lin, Y. Sui, S. Wang, J. Hao, Z. Zeng, Y. Ni*, Angew. Chem. Int. Ed. 2026, 65, e9120632.

[2] J. Shao, C. Lin, Y. Sui, M. Wang, W. Fan, Y. Ni*, Angew. Chem. Int. Ed. 2026, 65, e5579143.

[3] Y. Sui, Z. Wang, J. Hao, S. Wu, L. Ren, Z. Zeng.*, J. Wu*, Y. Ni*, Nat. Synth. 2026, 5, 230-239.

[4] M. He, Y. Sui, J. Shao, Z. Wang, Y. Gu, H. Xia, Y. Ni*, Sci. Adv. 2026, eaee3923.

[5] M. He, Y. Ni*, under review.

简历：

倪勇博士，南方科技大学化学系副教授（研究员）、博士生导师。2010年本科毕业于浙江大学，2015年博士毕业于新加坡国立大学，之后分别在新加坡科技研究局（A-Star）和新加坡国立大学任博士后研究员。2022年底加入南方科技大学，任职副教授，主要从事新型π共轭分子电子拓扑的系统研究，具体包括π共轭拓扑分子的精准合成、拓扑电子态的理论及光电磁功能调控机制。独立建组以来，共发表SCI论文20余篇，其中以通讯作者身份发表包括Nat. Synth.（1篇）、Angew. Chem. Int. Ed（3篇）、Sci. Adv. (1篇）、Chem. Mater.（1篇）。主持海外优青项目，并作为核心成员参与量子功能材料全国重点实验室、广东省重点实验室、广东省创新群体项目。

联系方式：dfwang@bit.edu.cn

邀请人： 王东飞 教授

网 址：http://physics.bit.edu.cn/

承办单位：物理学院、先进光电量子结构设计与测量教育部重点实验室

*Reporter：Prof. Yong Ni

*Time：10 : 00 am, 06 November 2026 (Friday) UTC+10:00

*Place：B203，Lixuelou B, Liangxiang Campus

*Abstract:

Topologically nontrivial molecular nanocarbons, featuring twisted, non‑planar architectures, exhibit fundamentally altered π‑electron delocalization, aromaticity, and magnetic behaviors, positioning them at the forefront of synthetic chemistry and topological materials science. For decades, many of these theoretical constructs have remained inaccessible, representing “holy grails” in synthetic organic chemistry. Here we present a series of strategic breakthroughs that collectively address this challenge. First, we developed an exo‑molecular stitching strategy, which employs precisely controlled peripheral annulations to construct multiply twisted molecular nanocarbons. Second, leveraging an intramolecular fold‑in stitching approach, we achieved the long‑awaited precise syntheses of quintulene and Möbius kekulene, overcoming the extreme strain and geometric constraints that had previously thwarted all attempts. Our work not only provides efficient synthetic strategies towards topologically nontrivial molecular nanocarbons but also elucidates how molecular topology governs their electronic structure and magnetic properties, thereby establishing a solid foundation for exploring topology‑driven quantum phenomena in carbon‑based architectures.

*Profile：

Dr. Yong Ni is currently an Associate Professor in the Department of Chemistry at Southern University of Science and Technology (SUSTech). He received his B.Sc. degree from Zhejiang University in 2010 and his Ph.D. degree from the National University of Singapore (NUS) in 2015. He subsequently conducted postdoctoral research at the Agency for Science, Technology and Research (A*STAR), and the NUS. He joined SUSTech in late 2022 as an Associate Professor. His research focuses on π-conjugated molecules with nontrivial topologies, encompassing their precise synthesis, systematic studies of topological electronic states, and the mechanic manipulation of optical, electronic, and magnetic features. He has published more than 20 papers since establishing independent research group, including Nat. Synth. (1)、Angew. Chem. Int. Ed. (3)、Sci. Adv. (1).

Contact Person: Prof. Dongfei Wang

Email：dfwang@bit.edu.cn

Website：http://physics.bit.edu.cn/

Hosting Organization：School of Physics, Beijing Institute of Technology; Key Laboratory of Advanced Optoelectronic Quantum Architecture and Measurement (MOE)