Title
The solid-state organization of self-doped PPV oligomersThe solid-state organization of self-doped PPV oligomers
Author
Faculty/Department
Faculty of Sciences. Chemistry
Faculty of Sciences. Physics
Research group
Biophysics and Biomedical Physics
Experimental condensed matter physics (ECM)
Spectroscopy in biophysics and catalysis (SIBAC)
Structural chemistry group
Publication type
article
Publication
Cambridge,
Subject
Physics
Chemistry
Source (journal)
Physical chemistry, chemical physics / Chemical Society [London] - Cambridge, 1999, currens
Volume/pages
13(2011):41, p. 18516-81522
ISSN
1463-9076
1463-9084
ISI
000295731100029
Carrier
E
Target language
English (eng)
Full text (Publishers DOI)
Affiliation
University of Antwerp
Abstract
Using a combination of multi-frequency EPR and NMR spectroscopy and quantum-chemical calculations at the level of Density Functional Theory (DFT), the organization of self-doped PPV oligomers in their solid state is investigated. The analysis of the different spectra shows that the electrochemical procedure used to self-dope these materials produces positive radicals (polarons) in an almost quantitative way, but still magnetically isolated polarons are observed. The difference between chemical and electrochemical oxidation of the oligomers is studied in detail. Furthermore, ageing of the electrochemically oxidized oligomers may be accompanied by a stacking of the oligomers.
E-info
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