Journal
DYES AND PIGMENTS
Volume 149, Issue -, Pages 331-335Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.dyepig.2017.10.010
Keywords
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Funding
- Project I-Zeb [7784/2016]
- III Accordo Quadro CNR -Region Lombardia
- BIOMAT bilateral project CNR-Azerbaijan National Academy of Sciences (ANAS)
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Polymeric nanoparticles obtained by co-aggregation of a polybenzofulvene derivative with bulky substituted perylene diimide dyes in tetrahydrofuran/water mixtures display emission color tunable from blue to red, or deep-red, thanks to energy transfer processes from the polymer to the emissive dyes activated by nanoparticle shrinking. At high water concentrations the presence of well emissive perylene diimide dye micro-aggregates within the polymer nanoparticles limits the FRET efficiency leading to a combined emission from both the polymer (blue) and the dyes (red and deep-red). The optical properties of the NPs are retained also in the solid state where a weak blue contribution of the polymer emission is observed providing multicolor emission in the films obtained by NPs deposition.
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