期刊
PHOTOSYNTHESIS RESEARCH
卷 101, 期 2-3, 页码 105-118出版社
SPRINGER
DOI: 10.1007/s11120-009-9454-y
关键词
Ultrafast spectroscopy; Photosynthesis; Light-harvesting antennas
资金
- Earth and Life Sciences council of the Netherlands Foundation for Scientific Research (NWO-ALW)
- Rubicon
The photophysical and photochemical reactions, after light absorption by a photosynthetic pigment-protein complex, are among the fastest events in biology, taking place on timescales ranging from tens of femtoseconds to a few nanoseconds. The advent of ultrafast laser systems that produce pulses with femtosecond duration opened up a new area of research and enabled investigation of these photophysical and photochemical reactions in real time. Here, we provide a basic description of the ultrafast transient absorption technique, the laser and wavelength-conversion equipment, the transient absorption setup, and the collection of transient absorption data. Recent applications of ultrafast transient absorption spectroscopy on systems with increasing degree of complexity, from biomimetic light-harvesting systems to natural light-harvesting antennas, are presented. In particular, we will discuss, in this educational review, how a molecular understanding of the light-harvesting and photoprotective functions of carotenoids in photosynthesis is accomplished through the application of ultrafast transient absorption spectroscopy.
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