Jump to main content
Jump to site search

Issue 26, 2020
Previous Article Next Article

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

Author affiliations

Abstract

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 ϕPL. While insulated fluorophores maintain respectable ϕPL at high concentration, an improved ϕPL can be achieved in the presence of appropriately oriented fluorophore aggregates as emissive traps. The theoretical calculations show that the relative orientation of aggregated monomers can result in energetic separation of localized states from the charge-transfer and bi-excitonic states thereby enabling high ϕPL.

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

Back to tab navigation

Supplementary files

Article information


Submitted
30 Apr 2020
Accepted
08 Jun 2020
First published
08 Jun 2020

J. Mater. Chem. C, 2020,8, 8953-8961
Article type
Paper

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

B. Zhang, I. Lyskov, L. J. Wilson, R. P. Sabatini, A. Manian, H. Soleimaninejad, J. M. White, T. A. Smith, G. Lakhwani, D. J. Jones, K. P. Ghiggino, S. P. Russo and W. W. H. Wong, J. Mater. Chem. C, 2020, 8, 8953
DOI: 10.1039/D0TC02108C

Social activity

Search articles by author

Spotlight

Advertisements