Power-Law-Distributed Dark States are the Main Pathway for Photobleaching of Single Organic Molecules

J.P. Hoogenboom, E.M.H.P. van Dijk, J. Hernando Campos, N.F. van Hulst, M.F. Garcia Parajo

Research output: Contribution to journalArticleAcademicpeer-review

96 Citations (Scopus)
109 Downloads (Pure)

Abstract

We exploit the strong excitonic coupling in a superradiant trimer molecule to distinguish between long-lived collective dark states and photobleaching events. The population and depopulation kinetics of the dark states in a single molecule follow power-law statistics over 5 orders of magnitude in time. This result is consistent with the formation of a radical unit via electron tunneling to a time-varying distribution of trapping sites in the surrounding polymer matrix. We furthermore demonstrate that this radicalization process forms the dominant pathway for molecular photobleaching.
Original languageEnglish
Pages (from-to)097401-1-097401-4
Number of pages4
JournalPhysical review letters
Volume95
Issue number097401
DOIs
Publication statusPublished - 2005

Keywords

  • IR-52710
  • METIS-224406

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