Accession Number:

AD0686020

Title:

PHOTOPHYSICAL PROCESSES IN POLYMER PHOTODEGRADATION INTRACHAIN TRIPLET TRANSFER IN POLY(1-VINYLNAPHTHALENE) AND POLY(1-VINYLNAPHTHALENE-CO-METHYL METHACRYLATE),

Descriptive Note:

Corporate Author:

NAVAL RESEARCH LAB WASHINGTON D C

Personal Author(s):

Report Date:

1969-03-17

Pagination or Media Count:

14.0

Abstract:

Poly1-vinylnaphthalene in a rigid glass at 77K exhibits a delayed fluorescence due to triplet-triplet annihilation resulting from intramolecular triplet-energy transfer through the naphthalene chromophores. The delayed fluorescence does not appear in the spectrum of 1-ethylnaphthalene. Delayed emission from the polymer but not from the small-molecule analog is quenched by piperylene. End groups are of greater importance than chain length in the control of triplet migration in the homopolymer experiments with 1-vinylnaphthalenemethyl methacrylate copolymers, however, indicate that a specific minimum chain length is required for efficient transfer. Author

Subject Categories:

  • Radiation and Nuclear Chemistry
  • Plastics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE