Accession Number:

ADA281740

Title:

Excimers and Exciplexes of Conjugated Polymers

Descriptive Note:

Technical rept.

Corporate Author:

ROCHESTER UNIV NY DEPT OF CHEMICAL ENGINEERING

Personal Author(s):

• Jenekhe, Samson A.
• Osaheni, J0hn A.

Report Date:

1994-06-28

Pagination or Media Count:

24.0

Abstract:

Observations of intermolecular excimers in several pi-conjugated polymers and exciplexes of these polymers with trisp-tolylamine are reported. It is shown that the luminescence of conjugated polymer thin films originates from excimer emission and that the generally low quantum yield is due to self-quenching. Thus in sufficiently dilute solution, the single-chain emission has a quantum yield of unity. Exciplex luminescence and exciplex-mediated charge photogeneration have much higher quantum yields than the excimer-mediated photophysical processes. These results provide a new basis for understanding and controlling the photophysics of conjugated polymers in terms of supramolecular structure and morphology.

Descriptors:

• *POLYMERS
• *EXCITATION
• *CHARGE TRANSFER
• *EXCIMERS
• EMISSION
• MORPHOLOGY
• THIN FILMS
• LASERS
• QUENCHING
• AMINES
• QUANTUM EFFICIENCY
• LUMINESCENCE

Subject Categories:

• Organic Chemistry
• Polymer Chemistry
• Lasers and Masers
• Optics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE