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Photosynthesis: The Quantum Design of a Light Trap  

2014-11-29 10:59:03|  分类: 科学研究前沿 |  标签: |举报 |字号 订阅

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Faculty of Science, VU University, De Boelelaan 1081, 1081HV, Amsterdam, The Netherlands

Rienk van Grondelle

简历:
2009-present Akademie Hoogleraar (Academy Professor) of the Royal Netherlands Academy of Arts and Sciences
2007-present Professor Blaise Pascal, Ecole National Superieure, Paris, France
2006-present Head of the Department of Physics and Astronomy, VU University, Amsterdam (NL)
1987-present Full Professor of Biophysics, Dept.of Physics and Astronomy, Faculty of Sciences, VU University, Amsterdam (NL).
1982-1987 Associate Prof. Dept.of Physics and Astronomy, Faculty of Sciences, VU University, Amsterdam (NL).
1979-1982 Post doc. Leiden Univ (NL), Prof dr. LNM Duysens
1978-1979 Post doc. Un of Bristol (UK), Prof dr. OTG Jones
1973-1978 PhD Biophysics Leiden University (NL), advisor: Prof LNM Duysens, degree was awarded 'cum laude'
摘要:Photosynthesis is the biological process that converts solar energy into chemical energy that is used by the organism to live, grow and multiply. At the basis of photosynthesis are two ultrafast processes: light harvesting by a photosynthetic light harvesting antenna followed by charge separation in the photosynthetic reaction center. Both processes occurs in dedicated pigment proteins that are organized in the photosynthetic membrane, in plants the thylakoid membrane. Upon excitation of a chlorophyll in the light harvesting antenna the energy is transferred on an ultrafast (femto- to picosecond) timescale to reach the reaction center where a transmembrane charge separation is initiated. The initial photosynthetic reactions occur with a quantum efficiency close to 1, meaning that every absorbed photon is used for photosynthesis. Recently it has become clear that quantum mechanics plays an essential role in both the light harvesting and charge separation events. Here I will explain how quantum mechanics is at the basis of successful light harvesting and charge separation. I will discuss how the quantum design of the photosynthetic light trap may be at the basis of new solar energy converting devices.

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