Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
9776219 | Synthetic Metals | 2005 | 4 Pages |
Abstract
We present a photophysical study of two fluorene alternating coporymeis in dilute solutions. The UV-Vis absorption spectra of the copolymers show two absorption bands in the 300-600Â nm wavelength range. In spite of the alternating nature of the copolymers the fluorescence spectrum, recorded by excitation within the higher energy absorption band, is also composed of two bands. The excitation spectra show that the lower energy emission band has contributions from both absorption bands, while the picosecond time-resolved fluorescence studies do not provide evidence for any energy transfer process, meaning that, if it occurs, is faster than the time resolution of our set up (â5Â ps).
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Physical Sciences and Engineering
Materials Science
Biomaterials
Authors
J. Morgado, A. Charas, J.M.G. Martinho, L. Alcácer,