Energy transfer dynamics in polyfluorene-based polymer blends

A. R. Buckley; M. D. Rahn; J. Hill; J. Cabanillas-Gonzalez; A. M. Fox; D. D.C. Bradley

doi:10.1016/S0009-2614(01)00359-1

Energy transfer dynamics in polyfluorene-based polymer blends

A. R. Buckley, M. D. Rahn, J. Hill, J. Cabanillas-Gonzalez, A. M. Fox, D. D.C. Bradley

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141 Scopus citations

Abstract

The Förster energy transfer mechanisms in polyfluorene-based polymer blends have been investigated by picosecond time-resolved photoluminescence spectroscopy. Blends of poly(9,9-dioctylfluorene), (F8), and poly(9,9-dioctylfluorene-co-benzothiadiazole), (BT), ranging from 50% to 0.01% BT have been investigated from room temperature down to 12 K. In high concentration BT/F8 films, nearest neighbour transfers from F8 to BT, characterised by an F8 fluorescence lifetime of 12 ps, totally dominate. In low concentration BT/F8 films energy transfer between F8 and BT still occurs at nearest neighbour sites, but exciton migration to these sites amongst F8 chain segments now also contributes to the measured dynamics. © 2001 Elsevier Science B.V.

Original language	English (US)
Journal	Chemical Physics Letters
Volume	339
Issue number	5-6
DOIs	https://doi.org/10.1016/S0009-2614(01)00359-1
State	Published - May 18 2001
Externally published	Yes

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title = "Energy transfer dynamics in polyfluorene-based polymer blends",

abstract = "The F{\"o}rster energy transfer mechanisms in polyfluorene-based polymer blends have been investigated by picosecond time-resolved photoluminescence spectroscopy. Blends of poly(9,9-dioctylfluorene), (F8), and poly(9,9-dioctylfluorene-co-benzothiadiazole), (BT), ranging from 50% to 0.01% BT have been investigated from room temperature down to 12 K. In high concentration BT/F8 films, nearest neighbour transfers from F8 to BT, characterised by an F8 fluorescence lifetime of 12 ps, totally dominate. In low concentration BT/F8 films energy transfer between F8 and BT still occurs at nearest neighbour sites, but exciton migration to these sites amongst F8 chain segments now also contributes to the measured dynamics. {\textcopyright} 2001 Elsevier Science B.V.",

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AU - Buckley, A. R.

AU - Rahn, M. D.

AU - Hill, J.

AU - Cabanillas-Gonzalez, J.

AU - Fox, A. M.

AU - Bradley, D. D.C.

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N2 - The Förster energy transfer mechanisms in polyfluorene-based polymer blends have been investigated by picosecond time-resolved photoluminescence spectroscopy. Blends of poly(9,9-dioctylfluorene), (F8), and poly(9,9-dioctylfluorene-co-benzothiadiazole), (BT), ranging from 50% to 0.01% BT have been investigated from room temperature down to 12 K. In high concentration BT/F8 films, nearest neighbour transfers from F8 to BT, characterised by an F8 fluorescence lifetime of 12 ps, totally dominate. In low concentration BT/F8 films energy transfer between F8 and BT still occurs at nearest neighbour sites, but exciton migration to these sites amongst F8 chain segments now also contributes to the measured dynamics. © 2001 Elsevier Science B.V.

AB - The Förster energy transfer mechanisms in polyfluorene-based polymer blends have been investigated by picosecond time-resolved photoluminescence spectroscopy. Blends of poly(9,9-dioctylfluorene), (F8), and poly(9,9-dioctylfluorene-co-benzothiadiazole), (BT), ranging from 50% to 0.01% BT have been investigated from room temperature down to 12 K. In high concentration BT/F8 films, nearest neighbour transfers from F8 to BT, characterised by an F8 fluorescence lifetime of 12 ps, totally dominate. In low concentration BT/F8 films energy transfer between F8 and BT still occurs at nearest neighbour sites, but exciton migration to these sites amongst F8 chain segments now also contributes to the measured dynamics. © 2001 Elsevier Science B.V.

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SN - 0009-2614

VL - 339

JO - Chemical Physics Letters

JF - Chemical Physics Letters

IS - 5-6

ER -

Energy transfer dynamics in polyfluorene-based polymer blends

Abstract

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