理解/揭示类胡萝卜素激发单线态。
Understanding/unravelling carotenoid excited singlet states.
机构信息
Department of Applied Chemistry for Environment, School of Science and Technology, Kwansei Gakuin University, 2-1 Gakuen, Sanda, Hyogo 669-1337, Japan
Department of Applied Chemistry for Environment, School of Science and Technology, Kwansei Gakuin University, 2-1 Gakuen, Sanda, Hyogo 669-1337, Japan.
出版信息
J R Soc Interface. 2018 Apr;15(141). doi: 10.1098/rsif.2018.0026.
Carotenoids are essential light-harvesting pigments in natural photosynthesis. They absorb in the blue-green region of the solar spectrum and transfer the absorbed energy to (bacterio-)chlorophylls, and thus expand the wavelength range of light that is able to drive photosynthesis. This process is an example of singlet-singlet excitation energy transfer, and carotenoids serve to enhance the overall efficiency of photosynthetic light reactions. The photochemistry and photophysics of carotenoids have often been interpreted by referring to those of simple polyene molecules that do not possess any functional groups. However, this may not always be wise because carotenoids usually have a number of functional groups that induce the variety of photochemical behaviours in them. These differences can also make the interpretation of the singlet excited states of carotenoids very complicated. In this article, we review the properties of the singlet excited states of carotenoids with the aim of producing as coherent a picture as possible of what is currently known and what needs to be learned.
类胡萝卜素是天然光合作用中必不可少的光捕获色素。它们在太阳光谱的蓝绿区域吸收光线，并将吸收的能量传递给（细菌）叶绿素，从而扩展了能够驱动光合作用的光波长范围。这个过程是单重态-单重态激发能量转移的一个例子，类胡萝卜素有助于提高光合作用光反应的整体效率。类胡萝卜素的光化学和光物理性质通常通过参考那些不具有任何官能团的简单多烯分子来解释。然而，这并不总是明智的，因为类胡萝卜素通常具有许多官能团，这些官能团会诱导它们产生多种光化学行为。这些差异也会使类胡萝卜素的单重激发态的解释变得非常复杂。在本文中，我们综述了类胡萝卜素的单重激发态的性质，旨在尽可能清晰地描绘出目前已知的和需要了解的内容。
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