芴二聚体的分子间相互作用

Lt. Clark Highstrete, J. Wessel
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引用次数: 0

摘要

分子二聚体和更高的团簇中的激发态相互作用越来越引起光谱研究的兴趣,因为这些相互作用揭示了分子间电位的性质并提供了团簇的几何信息。在超声速光束中制备了冷团簇,并利用荧光激发、光离和光谱学对其进行了研究。过去的研究表明,苯二聚体在第一激发态具有弱的分子间相互作用,而萘二聚体则具有强的准分子形成,导致广泛的电子谱。先前的报道表明,芴二聚体在较低能量的准分子状态下能有效地发出荧光。
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Intermolecular Interactions in the Fluorene Dimer
Excited state interactions in molecular dimers and higher clusters are of increasing spectroscopic interest because the interactions reveal the nature of the intermolecular potential and provide geometrical information about clusters. Cold clusters were prepared in a supersonic beam and studied by fluorescence excitation and photoionization and spectroscopies. Past studies revealed that benzene dimers are characterized by weak intermolecular interactions in the first excited state, whereas naphthalene dimers undergo strong excimer formation that results in broad electronic spectra. Prior reports2 indicated that fluorene dimers fluoresce efficiently from a lower energy excimer state.
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