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Abstract
摘要 |
近年来，超快激光的应用让观察光合作用体系中的光的吸收和能量传递成为可能。尤其是近几年通过此手段发现的相干性使得人们开始考虑光合作用体系中的原初过程，以及和其相关结构之间的联系。 本报告主要围绕光合作用体系的结构和能量的传递，介绍近些年来光合作用中的新进展和我们的一些工作。 其中包括我们最近提出的关于光合作用能量传递过程中相干性的起源，以及最近发展的用于跟踪能量传递的二维振动电子光谱技术， 和最近发现的基于环形结构使光合体系免于过强阳光损害的保护机制。
Recent applications of ultrafast spectroscopy with sub-picosecond laser enable direct measurements of dynamics of light capture and subsequent energy transfer in light-harvesting processes. Observations of long-lived coherence in these experiments have trigged a new research area to understand the very initial processes of light-harvesting, and their relations to the corresponding photosynthetic structures. In this talk, I will introduce the recent progresses along this direction, including our contributions. I will introduce our understanding of the physical origin of long-lived coherence during energy transfer, a new method of tracking energy transfer, and our recent proposed protection mechanism against damage by excess sunlight in the ring antennas of light-harvesting complexes. |
