叶绿素a分子在乙醇溶剂中的瞬态吸收研究

来源 :化学物理学报 | 被引量 : 0次 | 上传用户：xiner1312

【摘要】

：

采用飞秒瞬态吸收方法研究叶绿素a分子在乙醇溶液的的激发态性质.观测到叶绿素a的Q带和By带的瞬态吸收谱.并且观测到了叶绿素a分子的两个超快动力学过程.认为一个来源于基态

【作者】

：

石英许瑛珍苏夏琳林圣贤韩克利

【机构】

：

中国科学院大连化学物理研究所,中央研究院原子分子研究所,国立台湾大学化学系

【出处】

：

化学物理学报

【发表日期】

：

2004年期

【关键词】

：

飞秒叶绿素a 瞬态吸收 Femtosecond Chlorophyll a Transient absorption

【基金项目】

：

中国科学院知识创新工程项目;国家自然科学基金;NKBRSF. Support is also provided from the National Science Council of Taiwan and Academia Sinica

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采用飞秒瞬态吸收方法研究叶绿素a分子在乙醇溶液的的激发态性质.观测到叶绿素a的Q带和By带的瞬态吸收谱.并且观测到了叶绿素a分子的两个超快动力学过程.认为一个来源于基态吸收谱的非均匀展宽,而另一个则来源于溶剂对于激发态分子结构变化的响应.同时,为了了解叶绿素a在乙醇溶剂中的各相异性,采用405nm激发叶绿素a分子得到了各相异性值为0.143,并通过模拟得到可能的θda、θdb和η.

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叶绿素a分子在乙醇溶剂中的瞬态吸收研究

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