2026-10-11T04:43:01Z
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oai:figshare.com:article/33668970
2026-09-12T15:04:19Z
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Composite and Blends
of PFD and MEH-PPV Conjugated
Polymer Nanoparticles: Combined Optical Properties and Quantum Yield
Increase by FRET
Caio Henrique Viana da Silva (24833958)
Milton Lopes de Lana Junior (24833961)
Thiago Cazati (6745973)
Mariana P. Brandao (24833964)
Andreza Germana da Silva Subtil (24833967)
Biophysics
Biochemistry
Space Science
Physical Sciences not elsewhere classified
Medicine
Pharmacology
Biotechnology
Chemical Sciences not elsewhere classified
Cancer
subsequently mixed exhibit
quantum yield increase
photoluminescence quantum yield
exhibit photophysical properties
ethylhexyloxy )- 1
combined optical properties
blend nanoparticle samples
two times higher
polymer chain ’
distinct properties due
polymers mixed prior
cpns using combinations
cpns prepared separately
chosen conjugated polymers
dispersible luminescent cpns
create blend cpns
5 -( 2
diyl ), pfd
phenylenevinylene ], meh
distinct polymers
two methods
luminescent nanostructures
create nanocomposites
chain conformations
individual cpns
cpns fabricated
transfer energy
synthesis processes
solvent conditions
results show
reaching values
photonic devices
overall enhancement
intrachain interactions
hybrid nanoparticles
highly dependent
findings show
fabricated water
energy transfer
enabling applications
depend strongly
Conjugated Polymer Nanoparticles (CPNs) exhibit photophysical
properties
that depend strongly on morphology, chain conformations, solvent conditions,
synthesis processes, the polymer chain’s length and distribution,
and interchain/intrachain interactions. The production of CPNs using
combinations of two different conjugated polymers can be used to create
nanocomposites, by mixing previously formed CPNs from distinct polymers,
and to create blend CPNs, by mixing distinct polymers prior to the
formation of the CPNs. These two methods can produce diverse nanoparticle
solutions with distinct properties due to the interaction between
the chosen conjugated polymers. In this work, we fabricated water-dispersible
luminescent CPNs from the combination of two distinct conjugated polymers:
Poly[2-methoxy-5-(2-ethylhexyloxy)-1,4-phenylenevinylene], MEH-PPV,
and poly(9,9-di-n-dodecylfluorene-2,7-diyl), PFD. The CPNs prepared
separately and subsequently mixed exhibit the combined optical properties
of the individual CPNs. More importantly, our results show that in
CPNs fabricated with both polymers mixed prior to the formation, PFD
can transfer energy by Förster resonance energy transfer (FRET)
to MEH-PPV. The FRET efficiency is highly dependent on the concentration
and ratio of the polymers, reaching values of efficiency above 90%
for distances of the order of 4 nm. This energy transfer in blend
nanoparticle samples (CPN/PFD:MEH-PPV) resulted in an overall enhancement
of the photoluminescence quantum yield of the hybrid nanoparticles,
reaching values up to two times higher than those measured for pure
CPN/MEH-PPV nanoparticles. These findings show that the donor–acceptor
ratio controls energy-transfer efficiency by regulating the fraction
of interacting donor–acceptor pairs in hybrid conjugated polymer
nanoparticles, enabling applications in luminescent nanostructures,
sensing, and photonic devices.
2026-09-12T00:00:00Z
Dataset
Dataset
10.1021/acsomega.6c07561.s001
https://figshare.com/articles/dataset/Composite_and_Blends_of_PFD_and_MEH-PPV_Conjugated_Polymer_Nanoparticles_Combined_Optical_Properties_and_Quantum_Yield_Increase_by_FRET/33668970
CC BY-NC 4.0