Energy transfer in pendant perylene diimide copolymers

Abstract

We report the synthesis, characterisation and polymerisation of two novel asymmetric perylene diimide acrylate monomers. The novel monomers form a sensitiser-acceptor pair capable of undergoing Förster resonance energy transfer, and were incorporated as copolymers with tert-butyl acrylate. The tert-butyl acrylate units act as spacers along the polymer chain allowing high concentrations of dye while mitigating aggregate quenching, leading to persistent fluorescence in the solid state at high concentrations of up to 0.3 M. Analysis of fluorescence kinetics showed efficient energy transfer between the optically dense sensitiser and the lower concentration acceptor luminophores within the polymer. This reduced reabsorption within the material demonstrates that the copolymer-scaffold energy transfer system has potential for use in luminescent solar concentrators.

Covalently Linked Perylene Diimide–Polydiacetylene Nanofibers Display Enhanced Stability and Photocurrent with Reversible FRET Phenomenon

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New 4,5-diaza-9,9'-spirobifluorene derivative – promising electron acceptor for nonfullerene polymer solar cells

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Optimization of energy transfer in a polymer composite with perylene chromophores

“…Previously, we demonstrated energy transfer from the sensitizer to the emitter through the Förster mechanism. 17 Förster transfer efficiency is highly sensitive to the distance between the sensitizer and emitter. 18 To reduce this distance without creating an excessive concentration of fluorophores, we created a copolymer of sensitizer and emitter, which is illustrated in Fig.…”