Photo-oxidation of electroluminescent polymers studied by core-level photoabsorption spectroscopy
Sutherland, D. G. J. ; Carlisle, J. A. ; Elliker, P. ; Fox, G. ; Hagler, T. W. ; Jimenez, I. ; Lee, H. W. ; Pakbaz, K. ; Terminello, L. J. ; Williams, S. C. ; Himpsel, F. J. ; Shuh, D. K. ; Tong, W. M. ; Jia, J. J. ; Callcott, T. A. ; Ederer, D. L.
Woodbury, NY : American Institute of Physics (AIP)
Published 1996
Woodbury, NY : American Institute of Physics (AIP)
Published 1996
| ISSN: |
1077-3118
|
|---|---|
| Source: |
AIP Digital Archive
|
| Topics: |
Physics
|
| Notes: |
The C 1s and O 1s core-level photoabsorption spectra of poly[2-methoxy,5-(2′-ethyl- hexoxy)-1,4-phenylene vinylene] (MEH-PPV) before and after exposure O2 and broadband visible light were recorded to determine the degradation pathway for this polymer. The change in the O 1s spectra as a function of exposure demonstrates that the O adds to the polymer chain to form a carbonyl group. Exposure to only O2 or only light causes no change in the C 1s or O 1s spectra. In the C 1s spectra, the change in the dependence on the photon angle of incidence after exposure demonstrates that O attacks the polymer at the double bond in the vinyl group thereby altering the extended conjugation of the polymer. © 1996 American Institute of Physics.
|
| Type of Medium: |
Electronic Resource
|
| URL: |