Solvent Effects on Emission Yield and Lifetime for Coumarin Laser Dyes. Requirements for a Rotatory Decay Mechanism.

Abstract

Photophysical parameters have been determined for coumarin laser dyes in organic solvents and water. Fluorescence yields and lifetimes were sensitive to solvent polarity depending on subtle features of dye structure. Protic solvents were important in reducing emission yield for certain dyes. Radiative and non-radiative rates were obtained and trends analyzed in terms of dye structure, solvent properties, and medium temperature.

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Document Details

Document Type
Technical Report
Publication Date
Oct 31, 1983
Accession Number
ADA136358

Entities

People

  • C. Choi
  • G. Jones Ii
  • W. R. Bergmark
  • W. R. Jackson

Organizations

  • Boston University

Tags

Communities of Interest

  • Energy and Power Technologies

DTIC Thesaurus Topics

  • Alcohols
  • Charge Transfer
  • Chemical Synthesis
  • Chemistry
  • Dye Lasers
  • Dyes
  • Electron Density
  • Electrons
  • Energy
  • Energy Gaps
  • Energy Transfer
  • Fluorescence
  • Laser Dyes
  • Organic Chemistry
  • Plastic Explosives
  • Polarity
  • Quantum Yields

Fields of Study

  • Physics

Readers

  • Calculus or Mathematical Analysis
  • Chemistry (specifically Chemical Fluorescence)

Technology Areas

  • Directed Energy
  • Directed Energy - Lasers