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1. 聊城大学 物理科学与信息工程学院
2. 聊城大学 材料科学与工程学院
收稿:2008-09-14,
修回:1900-1-2,
网络首发:2009-08-30,
纸质出版:2009-08-30
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高学喜, 牟 娟, 王文军, 等. 紫外光辐照对偶氮苯光谱特性的影响[J]. 发光学报, 2009,30(4):549-553.
GAO Xue-xi, MOU Juan, WANG Wen-jun, et al. Influence of UV Illumination on Fluorescence Spectrum Properties of Azobenzen[J]. Chinese Journal of Luminescence, 2009, 30(4): 549-553.
采用紫外可见吸收、稳态荧光光谱和荧光衰减测量技术
观察了4-硝基-4'-氨基偶氮苯(NAA)在氯仿溶液中的光致变色现象及分子的跃迁能级和能级寿命。结果表明:NAA分子的顺反异构化反应并非一级反应;分子处于反式异构体和顺式异构体的跃迁能分别为255.6
240.2 kJ/mol;分子处于反式异构体的能级寿命为0.02 ns
处于顺式异构体的能级寿命为3.54 ns。顺反异构体的含量、NAA分子之间及NAA分子与溶剂分子之间的相互作用影响NAA分子激发态的能级寿命。
paper
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