NON-RADIATIVE ELECTRONIC ENERGY TRANSFER IN ORGANIC LIQUIDS AT HIGH "DONOR" CONCENTRATIONS

Abstract

The efficiency of electronic energy transfer from the liquids benzene, toluene, p-xylene and mesitylene to p-terphenyl were determined both for UV excitation in the first absorption band and for Cs-137 gamma excitation. In addition, the efficiency with which oxygen quenches the transport process was determined for both modes of excitation. Both energy transfer and oxygen quenching constants are larger than would be pre dicted on the basis of a diffusion limited rate. Dilution of the aromatic liquids with hexane reduced the rate of energy transfer. Mechanisms of energy transfer utilizing the states of the bulk solvent are briefly reviewed. Relative scintillation efficiencies were determined for solutions of p-terphenyl in benzene, toluene, p xylene and mesitylene. The constructio- the fluorimeter is described and the emission spec trum of pure liquid benzene presented.

Open PDF

Document Details

Document Type
Technical Report
Publication Date
May 01, 1963
Accession Number
AD0409481

Entities

People

  • Sanford Lipsky

Organizations

  • University of Minnesota

Tags

Communities of Interest

  • Energy and Power Technologies

DTIC Thesaurus Topics

  • Air Force
  • Alkanes
  • Aromatic Hydrocarbons
  • Charged Particles
  • Chemical Synthesis
  • Chemistry
  • Cyclic Hydrocarbons
  • Electronic States
  • Electrons
  • Energy Efficiency
  • Energy Transfer
  • Equations
  • Government Procurement
  • Governments
  • Materials
  • Measurement
  • Quantum Yields

Fields of Study

  • Chemistry

Readers

  • Molecular Photonics/Laser Physics
  • Organic Chemistry
  • Snow Cover Descriptors for Reptiles and Their Illustrations.

Technology Areas

  • Microelectronics