Solvent Effects on Photophysical Parameters for Coumarin Laser Dyes.

Abstract

The red shifts of absorption and emission bands of coumarin laser dyes were studied as a function of solvent polarity and hydrogen bonding. Spectra were correlated with solvent parameters, pi and alpha, and those solvents resulting in the largest Stokes shifts of dye emission were identified. Solvent effects on emission yield and lifetime revealed a major non-radiative decay path for dyes in which the 7-amine function is free to adopt a non-planar conformation. (Author)

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Document Details

Document Type
Technical Report
Publication Date
Jan 01, 1980
Accession Number
ADA081749

Entities

People

  • Arthur M. Halpern
  • Guilford Jones Ii
  • Santhi Kanoktanaporn
  • William R. Jackson

Organizations

  • Boston University

Tags

DTIC Thesaurus Topics

  • Alcohols
  • Chemical Synthesis
  • Chemistry
  • Dye Lasers
  • Dyes
  • Equations
  • Frequency
  • Laser Dyes
  • Lasers
  • Measurement
  • Organic Chemistry
  • Quantum Yields
  • Regression Analysis
  • United States
  • United States Government

Readers

  • Chemistry (specifically Chemical Fluorescence)
  • Quantum Chemistry

Technology Areas

  • Directed Energy
  • Directed Energy - Lasers