Journal article
Excitonic Processes in a Conjugated Polyelectrolyte Complex
David T Nitneth, James A Hutchison, Kenneth P Ghiggino
Australian Journal of Chemistry | CSIRO Publishing | Published : 2020
DOI: 10.1071/CH19308
Abstract
In aqueous solution, a di-sulfonated phenylenevinylene polymer (DPS-PPV) forms a complex with non-ionic poly(vinyl alcohol) (PVA) leading to absorption spectroscopic shifts and a dramatic (6-fold) increase in DPS-PPV fluorescence intensity. Spectroscopic investigations demonstrate that the complexation with PVA and other neutral polymers results in conformational changes in the DPS-PPV chains that lead to the removal of non-fluorescent energy traps and results in the observed increase in fluorescence in the bulk solution. Single molecule fluorescence measurements of DPS-PPV chains dispersed on glass and in PVA films confirm that efficient exciton energy transfer occurs within each photo-exci..
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Grants
Awarded by ARC Centre of Excellence in Exciton Science
Awarded by ARC DECRA Fellowship
Awarded by ARC Future Fellowship
Funding Acknowledgements
The authors acknowledge financial support for this research from the ARC Centre of Excellence in Exciton Science (CE170100026). JAH also acknowledges the award of an ARC DECRA Fellowship (DE130101300) and Future Fellowship (FT180100295). The authors thank Professor Jonathan White and Dr Tina Tan, University of Melbourne, for providing the sample of DPS-PPV.