Accession Number:

ADA172696

Title:

Photophysics of a Naphthalene Diisocyanate Based Polyurethane.

Descriptive Note:

Technical rept.,

Corporate Author:

UNIVERSITY OF SOUTHERN MISSISSIPPI HATTIESBURG DEPT OF POLYMER SCIENCE

Personal Author(s):

• Hoyle,Charles E.
• Kim,Kyu-Jun

Report Date:

1986-09-24

Pagination or Media Count:

22.0

Abstract:

A naphthalene dissocyanate based polyurethane in dilute solution is found to form intramolecular excimers between chromophores in the polymer backbone. The excimer kinetics is described by a triple exponential decay function. Based on comparison with model compounds, the photophysics of the polymer system is accounted for by the isolated monomer scheme. The relative intensity of the excimer emission depends on the solvent system employed and correlates directly with the intrinsic viscosity of the solution.

Descriptors:

• *REACTION KINETICS
• *PHOTOCHEMICAL REACTIONS
• *POLYURETHANE RESINS
• *EXCIMERS
• *CHROMOSPHERE
• SOLUTIONS(MIXTURES)
• EXCITATION
• EMISSION SPECTRA
• MONOMERS
• SOLVENTS
• MOLECULE MOLECULE INTERACTIONS
• VISCOSITY
• DECAY

Subject Categories:

• Organic Chemistry
• Radiation and Nuclear Chemistry
• Plastics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE