由我校研究生院、党委研究生工作部主办、材料科学与工程学院承办的研究生“名师名家”讲坛，将邀请瑞典查尔姆斯理工大学（Chalmers University of Technology）王二刚教授以及澳大利亚弗林德斯大学（Flinders University）Mats Andersson教授来我校作学术报告。欢迎广大师生积极参加！
报告时间：2025年7月9日上午9: 00
报告地点：主校区材料科学与工程学院教学楼207报告厅
报告主题：
Conjugated Polymers for Solar Energy Conversion
Unconventionally low donor content in efficient polymer solar cells and photocatalytic nanoparticles
报告人：王二刚教授、Mats Andersson教授
报告摘要：Conjugated organic semiconductors offer advantages such as solution-processability, tunable optoelectronic properties, mechanical flexibility, and suitability for large-area roll-to-roll fabrication—making them ideal for next-generation energy technologies.This talk focuses on their applications in organic photovoltaics (OPVs) and photocatalytic hydrogen production.
In OPVs, non-fullerene dimeric acceptors have led to significant PCE improvements. We synthesized thiophene-linked dimers exhibiting an O-shaped conformation, supported by 2D NMR and simulations, due to a “conformational lock” from strong intramolecular π-π interactions. Using ethylene as a linker results in an S-shaped conformation. These findings highlight the impact of conformation on OSC performance.
For hydrogen evolution, we developed Pt-freedibenzothiophene-S,S-dioxide (BTSO)-based conjugated polymers that self-assemble into nanoparticles. By tuning side chains, morphology, and pH value, and optimizing donor–acceptor interactions, we achieved a high HER rate of 209 mmol g⁻¹ h⁻¹ without cocatalysts.
报告人简介：王二刚，教授，博士生导师，瑞典查尔姆斯理工大学化学与化工学院，材料科学博士研究生院主管，瑞典瓦伦堡科学院会士（Wallenberg Academy Fellow）。长期从事新型有机共轭材料及二维材料的开发，及该类材料在太阳能电池、有机发光二极管、光发射电化学电池、有机光电探测器等领域中的应用，致力于探索分子结构与器件性能间的构效关系，提出有机电子稳定性和器件加工方面问题的化学解决方案，并开发共轭材料的新应用。王教授2003年本科毕业于郑州大学高分子材料与工程专业，2008年博士毕业于华南理工大学，师从曹镛院士。2008年赴瑞典查尔姆斯理工大学从事博士后研究，并在2012年被任命为该校助理教授，2016年提升为副教授，2019年升为教授，2023获得最高职称正教授。2016-2017年获居里夫人学者基金资助赴加州大学圣巴巴拉分校访问一年。2024年获得欧盟资助访问麻省理工学院。近年来共获得欧盟、瑞典科学基金委、瓦伦堡基金会等超过9000万瑞典克朗的研究基金。已发表论文200多篇，包括Joule、J. Am. Chem. Soc.、Angew. Chem.、Energy & Environ. Sci.、Adv. Mater.、Adv. Energy Mater.、Adv.Funct. Mater.等刊物，被引用13000多次，H-因子62。
报告摘要：Polymer solar cells have gained considerable interest during the last decades. Over the last years, the photovoltaic performance has increased rapidly with high power conversion for lab-scale devices. Our efforts have mainly been focused on the design and synthesis of new materials, but also on morphology control and printing of solar cells. The thermal stability of solar cell materials and interfaces is a prerequisite, as solar cells are often exposed to elevated temperatures during fabrication and operation. Our work includes morphology studied by dynamic mechanical thermal analysis (DMA). Compared to normal DMA measurements, the materials are deposited onto a supporting substrate. The technique is a highly sensitive method for determining the Tgof materials, including sub-Tg transitions and melting points.
Completely amorphous indacenodithiophene based polymers were synthesized and used in solar cells combined with the Y6 acceptor material. Low donor:acceptor (D:A) ratios are generally believed to yield lower efficiency than the more conventional 1:1.2 ratio. However, the solar cells exhibit a peak performance over 11% PCE at a D:A ratio of 1:5. Unexpectedly, as the polymer proportion increases, a reduced photovoltaic performance is observed. Similarly, nanoparticles made of the materials and used for photocatalytic hydrogen evolution show an analogous trend with a peak performance at a D:A ratio of 1:6.7.
报告人简介：Prof.Mats Anderssonperformed a joint PhD-work at the Departments of Organic Chemistry and Polymer Technology, Chalmers University of Technology, Gothenburg, Sweden, and received his PhD in Organic Chemistry in 1995. He was appointed Professor in Polymer Chemistry in 2004, and he held a chair in Polymer Chemistry from 2007 to 2015. In 2012, he was elected to the Royal Swedish Academy of Engineering Sciences. In 2013, he was awarded a South Australian Chair in Energy, and in 2014, Mats moved to Adelaide, Australia, to join the University of South Australia as a Research Professor. In 2017, he moved to Flinders University, Adelaide, as a Matthew Flinders Professor, and he is currently the director of the Flinders Institute for Nanoscale Science and Technology. His research interests focus on structure–property relationships of different functional materials. Currently, his research includes printed polymer solar cells, new antifouling coatings, single-atom electrochemical catalysis andphotocatalytic hydrogen evolution.Mats教授主要聚焦不同功能材料的结构-性能关系，目前重点研究方向包括：印刷聚合物太阳能电池、新型防污涂层、单原子电化学催化及光催化析氢技术。在国际知名期刊如Angew. Chem. Int. Ed、Nano Energy、Adv. Mater.、Nano-Micro Letters、Joule、Energy Environ. Sci.等发表论文350余篇，总引用超25600次，H-index达到82。
研究生院
党委研究生工作部
材料科学与工程学院
2025年7月1日
