| タイトル | Exciton coupling in molecular crystals |
| 本文（外部サイト） | http://hdl.handle.net/2060/19760023953 |
| 著者（英） | Ake, R. L. |
| 著者所属（英） | Old Dominion Univ. |
| 発行日 | 1976-08-01 |
| 言語 | eng |
| 内容記述 | The implications of perfect exciton coupling and molecular vibrations were investigated, as well as the effect they have on the lifetime of singlet and triplet excitons coupled in a limiting geometry. Crystalline bibenzyl, Cl4Hl4, provided a situation in which these mechanisms involving exciton coupling can be studied in the limit of perfect coupling between units due to the crystal's geometry. This geometry leads to a coupling between the two halves of the molecule resulting in a splitting of the molecular excited states. The study reported involves an experimental spectroscopic approach and begins with the purification of the bibenzyl. The principal experimental apparatus was an emission spectrometer. A closed cycle cryogenic system was used to vary the temperature of the sample between 20 K and 300 K. The desired results are the temperature-dependent emission spectra of the bibenzyl; in addition, the lifetimes and quantum yields measured at each temperature reveal the effect of competing radiationless processes. |
| NASA分類 | SOLID-STATE PHYSICS |
| レポートNO | 76N31041
NASA-CR-148722 |
| 権利 | No Copyright |
| URI | https://repository.exst.jaxa.jp/dspace/handle/a-is/184673 |
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