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Polarization dependence of transient absorption change in vanadylphthalocyanine

机译:钒基酞菁瞬态吸收变化的偏振依赖性

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Abstract: The transient absorption spectrum of a nonaggregated vanadylphthalocyanine solution has been measured by a subpicosecond pump-probe spectroscopy technique. A biexponential response with time constants of 4 ps and 800 ps has been observed. The dependence of the polarizations of pump and probe light has been investigated. The parallel-to- perpendicular ratio, i.e. the ratio of transient absorption change between configurations where pump and probe polarizations are parallel and perpendicular to each other, respectively, is 4:3. This is different from the ratio in ordinary 1D molecules, reflecting the 2D character of the vanadylphthalocyanine molecule.!15
机译:摘要:通过亚皮秒泵浦-探针光谱技术测量了非聚集的钒基酞菁溶液的瞬态吸收光谱。已经观察到时间常数为4 ps和800 ps的双指数响应。已经研究了泵浦光和探测光的偏振的相关性。平行与垂直之比,即泵浦和探针偏振分别平行和垂直的配置之间的瞬态吸收变化之比为4:3。这与普通一维分子的比率不同,反映了钒基酞菁分子的二维特征。15

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