Picosecond Fluorescence Dynamics of P-Dimethylaminobenzonitrile in Alcohol Solution

Shyh Gang Su, John D. Simon

Research output: Contribution to journalArticlepeer-review


The dynamics of the intramolecular charge transfer reaction of p-dimethylaminobenzonitrile is examined in alcohol solutions. The rate of charge separation is faster than the solvent fluctuation rate, τL1. Comparison of the experimental results with a recent theoretical model by Nadler and Marcus suggests that the rate of charge transfer is controlled by fluctuations in the intramolecular vibrational modes, not solvent diffusion. In addition, the TICT emission is observed to undergo a time dependent Stokes shift. The spectral relaxation is examined and compared to dielectric continuum models of solvent relaxation.

Original languageEnglish
Pages (from-to)155-161
Number of pages7
JournalProceedings of SPIE - The International Society for Optical Engineering
Publication statusPublished - 1988 Apr 27

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Computer Science Applications
  • Applied Mathematics
  • Electrical and Electronic Engineering

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