Limits...
Enhanced and tunable photoluminescence of polyphenylenevinylenes confined in nanocomposite films.

Posudievsky OY, Papakin MS, Boiko OP, Koshechko VG, Pokhodenko VD - Nanoscale Res Lett (2015)

Bottom Line: In the present work, CP/O300 nanocomposites based on CP - poly(p-phenylenevinylene) and poly(2-methoxy-5-(2'-ethylhexyloxy)-1,4-phenylenevinylene) - and silica nanoparticles (O300) are prepared.The greatest change of color coordinates is observed for poly(p-phenylenevinylene)-based nanocomposites due to specific preparation method and interaction with the inorganic component.The main emission from CP in the CP/O300 nanocomposites is owing to 0-0 transitions, while 0-1 transitions, associated with aggregate states of the CP chains, are suppressed.

View Article: PubMed Central - PubMed

Affiliation: L.V. Pisarzhevsky Institute of Physical Chemistry of the National Academy of Sciences of Ukraine, prospekt Nauki 31, 03028 Kyiv, Ukraine.

ABSTRACT
Conformation of macromolecules and interchain interactions determine spectral properties of conjugated polymers (CP). An achievement of spatial confinement of isolated chains is one of the routes to use this feature of CP for their purposeful usage. In the present work, CP/O300 nanocomposites based on CP - poly(p-phenylenevinylene) and poly(2-methoxy-5-(2'-ethylhexyloxy)-1,4-phenylenevinylene) - and silica nanoparticles (O300) are prepared. In comparison with many previously known hybrid nanomaterials synthesized with the similar purpose, CP/O300 nanocomposites are characterized by the essentially enhanced and tunable photoluminescence. The greatest change of color coordinates is observed for poly(p-phenylenevinylene)-based nanocomposites due to specific preparation method and interaction with the inorganic component. The main emission from CP in the CP/O300 nanocomposites is owing to 0-0 transitions, while 0-1 transitions, associated with aggregate states of the CP chains, are suppressed.

No MeSH data available.


TEM images of the initial O300 (a) and PPV/O300 (b) and MEH-PPV/O300 (c) nanocomposites.
© Copyright Policy - open-access
Related In: Results  -  Collection

License
getmorefigures.php?uid=PMC4385242&req=5

Fig1: TEM images of the initial O300 (a) and PPV/O300 (b) and MEH-PPV/O300 (c) nanocomposites.

Mentions: It is seen from the TEM data that the particles with a size of 30 to 50 nm (Figure 1a), which are formed as a result of the primary silica nanoparticles (5 to 20 nm) aggregation, were the primary structural element of the pure O300 film. Unlike O300, the size of the particles in the hybrid CP/O300 films was approximately 15 nm (Figure 1b,c). The observed decrease in the size of the nanoparticles was probably due to addition of CP which improves the dispersion of the inorganic nanoparticles in comparison with the initial O300.Figure 1


Enhanced and tunable photoluminescence of polyphenylenevinylenes confined in nanocomposite films.

Posudievsky OY, Papakin MS, Boiko OP, Koshechko VG, Pokhodenko VD - Nanoscale Res Lett (2015)

TEM images of the initial O300 (a) and PPV/O300 (b) and MEH-PPV/O300 (c) nanocomposites.
© Copyright Policy - open-access
Related In: Results  -  Collection

License
Show All Figures
getmorefigures.php?uid=PMC4385242&req=5

Fig1: TEM images of the initial O300 (a) and PPV/O300 (b) and MEH-PPV/O300 (c) nanocomposites.
Mentions: It is seen from the TEM data that the particles with a size of 30 to 50 nm (Figure 1a), which are formed as a result of the primary silica nanoparticles (5 to 20 nm) aggregation, were the primary structural element of the pure O300 film. Unlike O300, the size of the particles in the hybrid CP/O300 films was approximately 15 nm (Figure 1b,c). The observed decrease in the size of the nanoparticles was probably due to addition of CP which improves the dispersion of the inorganic nanoparticles in comparison with the initial O300.Figure 1

Bottom Line: In the present work, CP/O300 nanocomposites based on CP - poly(p-phenylenevinylene) and poly(2-methoxy-5-(2'-ethylhexyloxy)-1,4-phenylenevinylene) - and silica nanoparticles (O300) are prepared.The greatest change of color coordinates is observed for poly(p-phenylenevinylene)-based nanocomposites due to specific preparation method and interaction with the inorganic component.The main emission from CP in the CP/O300 nanocomposites is owing to 0-0 transitions, while 0-1 transitions, associated with aggregate states of the CP chains, are suppressed.

View Article: PubMed Central - PubMed

Affiliation: L.V. Pisarzhevsky Institute of Physical Chemistry of the National Academy of Sciences of Ukraine, prospekt Nauki 31, 03028 Kyiv, Ukraine.

ABSTRACT
Conformation of macromolecules and interchain interactions determine spectral properties of conjugated polymers (CP). An achievement of spatial confinement of isolated chains is one of the routes to use this feature of CP for their purposeful usage. In the present work, CP/O300 nanocomposites based on CP - poly(p-phenylenevinylene) and poly(2-methoxy-5-(2'-ethylhexyloxy)-1,4-phenylenevinylene) - and silica nanoparticles (O300) are prepared. In comparison with many previously known hybrid nanomaterials synthesized with the similar purpose, CP/O300 nanocomposites are characterized by the essentially enhanced and tunable photoluminescence. The greatest change of color coordinates is observed for poly(p-phenylenevinylene)-based nanocomposites due to specific preparation method and interaction with the inorganic component. The main emission from CP in the CP/O300 nanocomposites is owing to 0-0 transitions, while 0-1 transitions, associated with aggregate states of the CP chains, are suppressed.

No MeSH data available.