Charge transfer in single chains of a donor-acceptor conjugated tri-block copolymer

EN Hooley; DJ Jones; NC Greenham; KP Ghiggino; TDM Bell

Journal article

Charge transfer in single chains of a donor-acceptor conjugated tri-block copolymer

EN Hooley, DJ Jones, NC Greenham, KP Ghiggino, TDM Bell

Journal of Physical Chemistry B | Published : 2015

DOI: 10.1021/jp510769p

Abstract

The photophysics of a conjugated triblock copolymer comprising poly(9,9-dioctylfluorene-co-bis-N,N′-(4-methylphenyl)-bis-N,N′-phenyl-1,4-phenylenediamine) (PFM) electron donor and poly(4-(9,9-dioctyl-9H-fluoren-2-yl)benzo[c][1,2,5]-thiadiazole) (F8BT) electron acceptor blocks has been studied in solution, in films, and as single chains. While an additional long-wavelength emission apparent in neat films of the copolymer is attributed to interchain exciplex formation, no such long-wavelength emission is apparent in solution or from single molecules. However, in these cases, time-resolved fluorescence measurements indicate the presence of a delayed fluorescence. The kinetics of the delayed emi..

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University of Melbourne Researchers

David Jones Author

Ken Ghiggino Author

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Grants

Awarded by Australian Research Council

Funding Acknowledgements

We thank the Australian Research Council (ARC) for financial support of this research through Grants DP0986166, LE100100131, and LE110100161. E.N.H. acknowledges an Australian Postgraduate Award. We acknowledge Sam Ashworth for technical assistance with data collection. N.C.G. is grateful to the School of Chemistry, The University of Melbourne for a Wilsmore Fellowship, and to Queen's College, Melbourne for a Sugden Fellowship.