ELECTRONIC RELAXATION IN LONG POLYENES
ELECTRONIC RELAXATION IN LONG POLYENES
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DOI：
10.1021/j100384a026
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发表时间：
1990-10-18
影响因子：
--
通讯作者：
CHRISTENSEN, RL
中科院分区：
文献类型：
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作者：
COSGROVE, SA;GUITE, MA;CHRISTENSEN, RL
线性多烯的电子光谱和激发态动力学仍然是人们相当感兴趣的话题。最近的实验范围包括取代丁二烯中顺反异构化的时间分辨研究，1 到与光合细菌膜结合的类胡萝卜素的瞬态拉曼光谱，1 2 以及聚乙炔电子特性的研究。 3 这些研究涵盖了广泛的实验技术和理论模型，不同共轭长度的多烯之间的关系在很大程度上仍未得到探索也就不足为奇了。对线性共轭系统的共同理解仍然是人们积极关注的目标。这项研究通过建立短模型多烯和类胡萝卜素的电子特性之间的联系，为这一努力做出了贡献，类胡萝卜素在光生物学中发挥着重要作用。对以前关于多烯的工作的简要回顾确立了几个不同的感兴趣领域。短二苯基多烯（从二苯乙烯到二苯基多烯）的光谱和动力学研究
The electronic spectroscopy and excited-state dynamics of linear polyenes continue to be topics of considerable interest. Recent experiments range from time-resolved studies of cis-trans isomerization in substituted butadienes, 1 to transient Raman spec-troscopy of carotenoids bound to membranes of photosynthetic bacteria, 1 2 to investigations of the electronic properties of poly-acetylenes. 3 These studies encompass a wide range of experimental techniques and theoretical models, and it is not surprising that the relationshipsbetween polyenes of different conjugated lengths largely remain unexplored. A common understanding of linearly conjugatedsystems remains a goal of active interest. This investigation contributes toward this effort by establishing links between the electronic properties of short, model polyenes and the carotenoids, which play important roles in photobiology. A brief review of previous work on polyenes establishes several distinct areas of interest. Spectroscopic and kinetic investigations of short diphenylpolyenes (from stilbene to diphenyl-