Triplet exciton fusion at dislocations in anthracene

K. Yokoi, Y. Ohba

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Abstract

The fusion reaction of triplet excitons trapped at edge dislocations (001)[010] was studied in anthracene crystals by observing delayed fluorescence. The fusion rate obtained by kinetic analysis which includes the exciton-trapping effect is about unity measured in cm3 s -1, which is much greater than the fusion rate of free excitons (≅4×10-12 cm3 s-1), and also greater than an estimation based on the diffusion transport of trapped excitons along the dislocation line. The fusion mechanism of a pair of trapped excitons must be dominated by some long-range interaction.

Original languageEnglish
Pages (from-to)1887-1891
Number of pages5
JournalThe Journal of Chemical Physics
Volume87
Issue number3
Publication statusPublished - 1987

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ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics

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