Journal article

FRET-enhanced photoluminescence of perylene diimides by combining molecular aggregation and insulation

Bolong Zhang, Igor Lyskov, Lachlan J Wilson, Randy P Sabatini, Anjay Manian, Hamid Soleimaninejad, Jonathan M White, Trevor A Smith, Girish Lakhwani, David J Jones, Kenneth P Ghiggino, Salvy P Russo, Wallace WH Wong

Journal of Materials Chemistry C | Royal Society of Chemistry | Published : 2020


The photoluminescence quantum yield (ϕPL) of perylene diimide derivatives (PDIs) is often limited by aggregation caused quenching (ACQ) at high concentration or in the neat solid-state. Energy transfer in high dye concentration systems is also a key factor in determining ϕPL as a result of energy funneling to trap sites in the sample. By tuning the substituents, we present two classes of PDIs with aggregation and insulation of the PDI core. By combining these fluorophores in a polymer film, we demonstrate highly emissive samples (85% ϕPL) at high concentration (140 mM or 20% w/w). Experimental and theoretical studies provide insight into why such a combination is necessary to achieve high ϕP..

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Awarded by ARC Centre of Excellence in Exciton Science

Funding Acknowledgements

This work was made possible by support from the Australian Renewable Energy Agency, which funds the project grants within the Australian Centre for Advanced Photovoltaics (ACAP). This work was also supported by the ARC Centre of Excellence in Exciton Science (CE170100026). BZ is supported by the Albert Shimmins Postgraduate Writing Up Award. We gratefully acknowledge the Australian Synchrotron for beamtime via the Collaborative Access Program (proposal number 13618b).<SUP>56</SUP>