Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
1442944 | Synthetic Metals | 2007 | 7 Pages |
Abstract
Exciton dynamics of poly(3-dodecylthiophene) were studied by steady state and femtosecond time-resolved fluorescence spectroscopy. Comparing the solution and solid-state results intrachain and interchain exciton transfer processes were distinguished. The steady-state spectra revealed extra nonradiative relaxation channel in solid state and excitation wavelength-dependent fluorescence, suggesting non-trivial energy level structure. According to the observed wavelength dependent spectral splitting phenomena a domain model of the poly(3-dodecylthiophene) solid structure were suggested. The time-resolved results confirmed the domain concept unveiling two spectral areas with different fluorescence character. Moreover, the time-resolved study was able to differentiate between two poly(3-dodecylthiophene) samples with small change (13%) of their regioregularity. The obtained results are a demonstration of usefulness of fluorescence spectroscopy to analyze the interchain polymer structure in solid state.
Related Topics
Physical Sciences and Engineering
Materials Science
Biomaterials
Authors
Ignác Bugár, Michal Žitnan, DuÅ¡an VeliÄ, Gabriel ÄÃk, DuÅ¡an Chorvát,