Photophysics of Polyurethanes Based on 1,5-Naphthalene Diisocyanate.
UNIVERSITY OF SOUTHERN MISSISSIPPI HATTIESBURG DEPT OF POLYMER SCIENCE
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In contrast to the vast number of studies on excimers formed between aromatic chromophores pendant to the polymer backbone, relatively few papers have been published on excimers formed from polymers with the interactive species in the backbone. Selected examples can be found in references 2-5. In this paper, we report on the photophysical behavior of polyurethanes based on 1,5-naphthalene diisocyanate NDI which have naphthalene chromophores periodically spaced along the polymer backbone. Excimer formation is found in both dilute solutions and films. The discovery of the excimer emission in polyurethanes is of particular interest since excimer formation may alter the photolytic degradation process.
- Radiation and Nuclear Chemistry