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飞秒荧光亏蚀光谱技术研究液相体取向弛豫
Authors
刘建勇
徐大力
+3 more
楼南泉
范文慧
韩克利
Publication date
Publisher
Abstract
溶液中分子的快速弛豫过程直接反映了溶液中溶质和周围溶剂分子间的相互作用~1-3.在液相体系中分子取向通常是随机分布的.当溶质分子被线偏振光激发至激发态时,其分子取向将由原来各向同性的球形分布瞬间变成各向异性的椭球分布。由于溶质分子周围大量溶剂分子的存在,通过二者之间相互作用,激发态溶质分子在一定方向上的取向优势将很快弛豫掉。这种溶液中的取向弛豫过程通常是几个到几百皮秒~1-3
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Last time updated on 07/01/2020