Luminescence Titrations of Polyelectrolytes.

Abstract

When an anionic polyelectrolyte is added to a solution of a cationic lumophore (the probe), binding of the probe ions to the anionic sites on the polymer chain can occur. We have found that in some cases, this binding results in an increase in the probe's quantum yield for emission. This paper explores the possibility of exploiting this effect in luminescence titrations for determination of either the equivalent weight (EW) of a polyanion or the concentration of the polyanion in solution (if the EW is known). A suitable probe cation is identified and luminescence titration curves for a variety of polyanions are presented. The luminescence titration procedure was found to produce precisions of better than 5% and accuracies of better than 1% in titrations of the Na(+) salt forms of hydrophobic polyanions. (Author)

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Document Details

Document Type
Technical Report
Publication Date
May 01, 1984
Accession Number
ADA140823

Entities

People

  • C. R. Martin
  • E. R. Alvarez-roa
  • N. E. Prieto

Organizations

  • Texas A&M University

Tags

Communities of Interest

  • Ground and Sea Platforms
  • Weapons Technologies

DTIC Thesaurus Topics

  • Accuracy
  • Analytical Chemistry
  • Chemical Analysis
  • Chemical Engineering
  • Chemistry
  • Emission Spectra
  • Engineering
  • Equations
  • Jet Propulsion
  • Materials
  • Materials Science
  • Mechanical Engineering
  • Military Research
  • New Jersey
  • New York
  • North Carolina
  • Quantum Yields

Fields of Study

  • Materials science

Readers

  • Materials Science and Engineering.
  • Polymer Science and Technology
  • Virology (or Medical Virology).

Technology Areas

  • Quantum Computing