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
Descriptors:
Subject Categories:
- Radiation and Nuclear Chemistry
- Plastics