Thanks to exciting chemical and optical features, perylene bisimide (PBI) J-aggregates\ud
are ideal candidates to be employed for high-performance plastic photonic devices.\ud
However, they generally tend to form - stacked H-aggregates that are unsuitable for\ud
implementation in polymer resonant cavities. In this work, we demonstrate the efficient\ud
compatibilization of a tailored perylene bisimide forming robust J-aggregated\ud
supramolecular polymers into amorphous polypropylene. The new nanocomposite was\ud
then implemented into an all-polymer planar microcavity which provides strong and\ud
directional spectral redistribution of the J-aggregate photoluminescence, owing to a\ud
strong modification of the photonic states. A systematic analysis of the photoemitting\ud
processes, including photoluminescence decay and quantum yields, shows that the\ud
optical confinement in the polymeric microcavity does not introduce any additional nonradiative\ud
de-excitation pathways to those already found in the J-aggregate\ud
nanocomposite film and pave the way to PBI-based high-performance plastic photonic\ud
devices