关于举行台湾大学周必泰教授学术报告的通知
报告题目1：Molecular Interplay:Fundamental and Applications分子间的相互作用: 基础与应用
报告题目2：Intramolecular Motion and Molecular Machinery激发态分子的运动以及分子机械
报 告 人：周必泰（台湾大学教授）
报告时间：2024年10月21日（星期一）上午10:00—11:00
2024年10月22日（星期二）上午10:00—11:00
报告地点：北区科技园1号楼502会议室
主办单位：材料科学与工程学院/发光材料与器件国家重点实验室
报告摘要：
报告1：I will present the molecular design and spectroscopic technique, together with the theoretical approach, to probe the molecular interactions and their applications in lighting and energy issues. The main focus will be on the revitalization of the “energy gap law” with molecular design and modification of the theoretical approaches. From both theory and experiments, we prove that the combination of exciton delocalization, deuterium isotope and low-frequency coherent motions of molecular self-assembly is able to suppress the internal reorganization energy and hence surpass the barrier imposed by energy gap law. The strategy thus makes breakthroughs on the NIR OLEDs. We also quest the single molecular NIR emission and open a new territory to pursue NIR organic emitters via intramolecular exciton delocalization. As for other type of molecular interaction, we probe the structure of the exciplex and the associated formation mechanism.
在这场演讲里，我将介绍分子设计和光谱技术以及理论方法，以探讨分子间相互作用，以及在发光材料和能源议题中的应用。演讲主要焦点将是通过理论公式的修改，来深入了解 “能隙定律”。我们从理论和实验两方面证明了激子离域、氘同位素和分子自组装低频相干运动的结合，能够抑制内部重组能，从而克服能隙定律所施加的障碍。该策略也在近红外线 OLED 方面取得了突破。我们也探索单分子近红外线发射，并开辟了通过分子内激子离域来追求近红外线有机发射体的新领域。对于相关其他类型的分子相互作用，我们也探讨了激基复合物的结构和相关的形成机制，并应用于 OLEDs。
报告2：In this talk, focus will be on the photoinduced molecular motion, structural relaxation, and machinery. As for the molecular motion, prototypical patterns such as excited-state intramolecular proton transfer (ESIPT) and proton coupled electron transfer (PCET) will be demonstrated, where the correlation between kinetics and thermodynamics will be presented. The fine-tuning of ESIPT in kinetics and thermodynamics has been successfully applied in the lighting and sensing. I also would like to talk about the excited-state multiple proton transfer reaction to mimic the proton relay system in biology. Parallelly, a seminal topic on the thiol intramolecular hydrogen bond and its associated ESIPT will be presented. Finally, I will demonstrate a new type of molecular machinery. This system is based on photoinduced electron transfer or proton transfer triggering counterion motion, which serves as a facile probe for versatile applications.
在本次演讲中，重点将放在光诱导分子运动、分子结构变化和分子机械上。在分子运动的主题上，我将展示激发态分子内质子转移（ESIPT）和质子耦合电子转移（PCET）等原型模式，并阐释动力学和热力学之间的相关性。进一步对 ESIPT 在动力学和热力学方面进行微调，可以成功应用于发光和感测领域。另外，我也会讲到激发态多重质子转移反应，用以模拟生化中的质子连锁转移系统。同时，也提出关于硫醇分子内氢键及其相关的异常光物理（例如激发态分子内质子转移反应和光诱导电子转移触发分子运动）的开创性主题。最后，我将展示一种新型的分子机械。该系统基于光诱导电子转移或质子转移触发反离子运动，具有多功能应用的前景。
