时间：2016年7月1日（周五）9：00 -10：00
地点：仓山校区物光大楼四层学术报告厅
主办：光电与信息工程学院、福建省光子技术重点实验室、医学光电科学与技术教育部重点实验室
主讲：德国洪堡大学 Beate Röder教授
专家简介：Dr. Beate Röder is professor of experimental physics at the Department of Physics, Humboldt-Universität zu (HU) Berlin. She is leading the photobiophysics group and her research focuses on molecular photobiophysics, especially on fundamental research in the field of photosensitization and artificial photosynthesis，and the development of time-resolved optical methods for detection of very low light intensities. She works more than 30 years on direct spectroscopic detection of singlet molecular oxygen, the last years in particular on time-resolved luminescence detection. In 2009 she was awarded with a Walton Professorship by Science Foundation Ireland.
报告摘要：The most common form of microorganism existence is in biofilms. Growing on buildings, monuments, or technical installations biofilm forming microorganisms cause aesthetic, ecological, and economical damage. Additionally, spore forming microorganisms like mold fungi can provoke problems to human health. Therefore, significant amounts of biocides are used to combat biofilm growth on solid surfaces worldwide. The release of biocides into the environment provokes new risks to human health and environmental problems. To break this vicious circle new strategies to combat biofilm-forming microorganisms are necessary. One possible approach is using photodynamic inactivation (PDI). The high potential of PDI to combat mold fungi and their spores has been shown by several groups. A proof of concept of the sufficient PDI of green algae and cyanobacteria as phototrophic primary settler in subaerial biofilms has been done already. Here we will report about the observation of singlet oxygen luminescence kinetics being a very effective approach towards understanding the mechanism of PDI on a cellular level in biofilms. In this study, the first ever measurement of singlet oxygen kinetics in phototrophic microorganisms on surfaces during photodynamic inactivation is presented.