Triplet-exciton dynamics in polyadenilic acid

Bat Sheva Sommer, Joshua Jortner

Research output: Contribution to journalArticlepeer-review


In this paper we present the results of a theoretical study of triplet exciton dynamics in single-strand polyadenilic acid. The triplet jump time was related to the intermolecular electron-exchange interactions, and to a semiempirical scattering time. Calculations of the intermolecular interactions were performed for five different structural models for the helical polymer. The theoretical results are consistent with the available experimental triplet energy-transfer data for this system, provided that the structure of single-strand polyadenilic acid is close to that of RNA 11. For this structural model the nearest-neighbor triplet-transfer integrals in polyadenilic acid are ∼0.5 cm-1, and the estimated triplet-exciton jump time is τj∼10-9 sec.

Original languageEnglish
Pages (from-to)3919-3928
Number of pages10
JournalThe Journal of Chemical Physics
Issue number9
StatePublished - 1968


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