报告题目 | Light conversion by electrochemiluminescence at semiconductor surfaces |
报告人 | Prof. Neso SOJIC |
报告人单位 | University of Bordeaux |
报告时间 | 2024年4月2日（星期二）8：30-10：30 |
报告地点 | 物质科研楼B-C连廊三楼会议室 |
主办单位 | 精准智能化学重点实验室 |
报告摘要 | Electrochemiluminescence (ECL) is the electrochemical generation of light. It involves an interfacial charge transfer that produces the excited state of a luminophore at an electrode surface. ECL is a powerful technique that is widely employed for immunoassays and clinical diagnosis. On the other hand, photoelectrochemistry at illuminated semiconductors is a field of research that deals with the charge transfer of photogenerated charge carriers at an electrode surface. The combination of ECL with photoelectrochemistry at illuminated semiconductors is referred to as photoinduced ECL (PECL) and is a growing field of research.PECL results in the conversion of incident photons (exc), that are absorbed by the semiconductor photoelectrode to emitted photons (ECL), produced by the ECL reaction. Although demonstrated in the seventies, PECL remained unexplored until the last five years, as a result of the considerable progress achieved in semiconductor photoelectrodes and ECL systems. Nowadays, a large variety of PECL systems can be designed by combining photoelectrode materials with ECL luminophores, making it a versatile tool for light conversion. In this talk, we will present the recent developments in PECL and we will show that, by engineering the photoelectrode material and carefully considering the reactivity involved for ECL and its counter-reaction,PECL enables the ultimate concept of all-optical ECL (AO-ECL),i.e.,ECL generation at an illuminated monolithic device immersed into the electrolyte solution. Due to the robustness of recently manufactured PECL systems, several applications can already be envisioned for microscopy, elucidation of mechanisms solar conversion mechanisms, bioanalysis, and near-infrared imaging. |
报告人简介 | Neso Sojic is a professor at the University of Bordeaux in France. He obtained his Ph.D. from the University of Pierre and Marie Curie in France in 1997, and then conducted postdoctoral research at the University of Texas at Dallas in the United States. In 1998, he joined the National Higher School of Chemistry and Physics of Bordeaux, and was promoted to professor at the University of Bordeaux in 2006. His main research areas include bioelectrochemistry, spectroelectrochemistry, and electrochemiluminescence sensing. He has published over 260 SCI papers in journals such as J. Am. Chem. Soc., Angew. Chem. Int. Ed., and Anal. Chem., with a total citation count of over 6000. He has received the French Chemical Society-Analytical Chemistry Division Medal, the Chinese Academy of Sciences President’s International Fellowship, and the Innovation Prize from the French Chemical Society. |
