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自从1954年Frster发现激基缔合物(Excimer)荧光光谱以来,这一领域的研究十分活跃。由于吸收光谱没有变化,因此以往都认为在基态没有预先形成的激基缔合物位置。而只有当分子处于激发态时,通过分子运动达到一定的距离,而后由控制步骤的扩散过程形成一定的几何构型才能形成激基缔合物。但Ferguson把芘分散在低温玻璃态固体体系中;Avis等人把芘分散在常温固体膜的体系中,都发现了芘的激基缔合物荧光光谱。这些实验结
Research in this area has been very active since Frster discovered the excimer fluorescence spectrum in 1954. Since there is no change in the absorption spectrum, it has conventionally been assumed that there is no pre-formed excimer position in the ground state. Only when the molecule is in an excited state can it reach a certain distance through the molecular motion, and then a certain geometry can be formed by the diffusion process of the control step to form an excimer. However, Ferguson disperses pyrene in a low-temperature glassy solid system; Avis et al. Found pyrene-based excimer fluorescence spectra of pyrene dispersed in a system of solid-state membranes at room temperature. These experimental results