报告题目：Artificial photosynthetic light-harvesting antennas using self-aggregates of synthetic chlorophyll derivatives

报告人： Tamiaki Hitoshi (Ritsumeikan University)

报告时间：2017年5月31日上午9:30-11:30

报告地点：前卫南区物理楼333讲学厅

　　Natural chlorophylls and their synthetic analogs are reviewed from the viewpoints of their photochemistry and metabolism (biosynthesis and degradation) as well as synthetic application including artificial photosynthesis, biosensors, and solar cells.

　　Chlorophylls are one class of the most important pigments in photosynthesis. Most of the natural chlorophylls are found in photosynthetic apparatus. Chlorophylls function in light-harvesting antenna systems and charge-separating apparatuses (called reaction centers). In the former, a large quantity of the pigments absorb sunlight with a relatively low energy density, then the excited singlet energy migrates over a long range and is transferred to neighboring antenna systems or reaction centers. The concentrated excitation energy is utilized for electron transfer between chlorophyll pigments in a reaction center. These ultra-fast photoinduced processes with high efficiency are performed in pigment-peptide complexes or pigment self-aggregates.

　　A variety of chlorophyll analogs were prepared by modifying natural chlorophylls and are useful for elucidating optical properties of chlorophylls and constructing artificial photosynthetic systems including light-harvesting antennas and reaction centers.

主办单位：新型电池物理与技术教育部重点实验室

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