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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.


Comparison of the PL lifetime of (a) PPV and PPV/О300 (λex = 300 nm) and (b) MEH-PPV and MEH-PPV/О300 (λex = 470 nm).
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Fig4: Comparison of the PL lifetime of (a) PPV and PPV/О300 (λex = 300 nm) and (b) MEH-PPV and MEH-PPV/О300 (λex = 470 nm).

Mentions: It should be also mentioned that the increase of PL intensity of the CP-based nanocomposites relative to initial polymers agrees with the growth of the PL lifetime that could be seen in Figure 4 which presents the results of measuring the PL decay kinetics. The same tendency was earlier found for MEH-PPV/MCM-41 composite prepared by direct insertion of the CP inside the nanochannels of the mesoporous inorganic matrix [18].Figure 4


Enhanced and tunable photoluminescence of polyphenylenevinylenes confined in nanocomposite films.

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

Comparison of the PL lifetime of (a) PPV and PPV/О300 (λex = 300 nm) and (b) MEH-PPV and MEH-PPV/О300 (λex = 470 nm).
© Copyright Policy - open-access
Related In: Results  -  Collection

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

Fig4: Comparison of the PL lifetime of (a) PPV and PPV/О300 (λex = 300 nm) and (b) MEH-PPV and MEH-PPV/О300 (λex = 470 nm).
Mentions: It should be also mentioned that the increase of PL intensity of the CP-based nanocomposites relative to initial polymers agrees with the growth of the PL lifetime that could be seen in Figure 4 which presents the results of measuring the PL decay kinetics. The same tendency was earlier found for MEH-PPV/MCM-41 composite prepared by direct insertion of the CP inside the nanochannels of the mesoporous inorganic matrix [18].Figure 4

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.