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Photo-induced intramolecular electron transfer and intramolecular vibrational relaxation of rhodamine 6G in DMSO revealed by multiplex transient grating spectroscopy

  • Li Lin Jiang*
  • , Wei Long Liu
  • , Yun Fei Song
  • , Shan Lin Sun
  • *Corresponding author for this work
  • Hezhou University
  • Harbin Institute of Technology
  • Guilin University of Aerospace Technology

Research output: Contribution to journalArticlepeer-review

Abstract

Photo-induced intramolecular electron transfer (PIET) and intramolecular vibrational relaxation (IVR) dynamics of the excited state of rhodamine 6G (Rh6G+) in DMSO are investigated by multiplex transient grating. Two major components are resolved in the dynamics of Rh6G+. The first component, with a lifetime τPIET = 140 fs-260 fs, is attributed to PIET from the phenyl ring to the xanthene plane. The IVR process occurring in the range τIVR = 3.3 ps-5.2 ps is much slower than the first component. The PIET and IVR processes occurring in the excited state of Rh6G+ are quantitatively determined, and a better understanding of the relationship between these processes is obtained.

Original languageEnglish
Article number107802
JournalChinese Physics B
Volume23
Issue number10
DOIs
StatePublished - 1 Oct 2014

Keywords

  • Excited state
  • Intramolecular vibrational relaxation
  • Multiplex transient grating
  • Photo-induced intramolecular electron transfer

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