Study of solvent-conjugated polymer interactions by polarized spectroscopy: MEH-PPV and Poly(9,9′-dioctylfluorene-2,7-diyl)
Absorption, emission, and anisotropy measurements were performed on poly-[2-methoxy-5(2′-ethylhexyloxy)-1,4-phenylenevinylene] (MEH-PPV) and poly-(9,9′-dioctylfluorene-2,7-diyl) (PF) solutions of various solvents, and in thin films deposited from them. The good correlation of MEH-PPV absorption and...
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todo:paper_00222313_v130_n3_p415_Cossiello2023-10-03T14:28:42Z Study of solvent-conjugated polymer interactions by polarized spectroscopy: MEH-PPV and Poly(9,9′-dioctylfluorene-2,7-diyl) Cossiello, R.F. Susman, M.D. Aramendía, P.F. Atvars, T.D.Z. Conjugated polymers Fluorescence anisotropy MEH-PPV Polyfluorene Solutions and films Solvent effects Fluorescence anisotropy MEH-PPV Polyfluorene Polyfluorene solutions Solvent effects Absorption Anisotropy Conjugated polymers Emission spectroscopy Energy transfer Fluorescence Polymers Solvents Solution mining Absorption, emission, and anisotropy measurements were performed on poly-[2-methoxy-5(2′-ethylhexyloxy)-1,4-phenylenevinylene] (MEH-PPV) and poly-(9,9′-dioctylfluorene-2,7-diyl) (PF) solutions of various solvents, and in thin films deposited from them. The good correlation of MEH-PPV absorption and emission energy with Hildebrandt's dispersive parameter indicate that dispersive forces regulate the effective extent of the luminophore. The excitation and the emission spectra of α and β chains can be distinguished in PF solutions using the steady-state anisotropy. PF films show greater memory effect from the solutions from which they were spun than MEH-PPV. Anisotropy of MEH-PPV is very low, both in solutions and in films reflecting efficient energy migration. Anisotropy of PF in solutions and films demonstrates great differences in energy transfer efficiency within the α and β phases, while there is no energy transfer between these chain conformations. © 2009. Fil:Aramendía, P.F. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. JOUR info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by/2.5/ar http://hdl.handle.net/20.500.12110/paper_00222313_v130_n3_p415_Cossiello |
institution |
Universidad de Buenos Aires |
institution_str |
I-28 |
repository_str |
R-134 |
collection |
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) |
topic |
Conjugated polymers Fluorescence anisotropy MEH-PPV Polyfluorene Solutions and films Solvent effects Fluorescence anisotropy MEH-PPV Polyfluorene Polyfluorene solutions Solvent effects Absorption Anisotropy Conjugated polymers Emission spectroscopy Energy transfer Fluorescence Polymers Solvents Solution mining |
spellingShingle |
Conjugated polymers Fluorescence anisotropy MEH-PPV Polyfluorene Solutions and films Solvent effects Fluorescence anisotropy MEH-PPV Polyfluorene Polyfluorene solutions Solvent effects Absorption Anisotropy Conjugated polymers Emission spectroscopy Energy transfer Fluorescence Polymers Solvents Solution mining Cossiello, R.F. Susman, M.D. Aramendía, P.F. Atvars, T.D.Z. Study of solvent-conjugated polymer interactions by polarized spectroscopy: MEH-PPV and Poly(9,9′-dioctylfluorene-2,7-diyl) |
topic_facet |
Conjugated polymers Fluorescence anisotropy MEH-PPV Polyfluorene Solutions and films Solvent effects Fluorescence anisotropy MEH-PPV Polyfluorene Polyfluorene solutions Solvent effects Absorption Anisotropy Conjugated polymers Emission spectroscopy Energy transfer Fluorescence Polymers Solvents Solution mining |
description |
Absorption, emission, and anisotropy measurements were performed on poly-[2-methoxy-5(2′-ethylhexyloxy)-1,4-phenylenevinylene] (MEH-PPV) and poly-(9,9′-dioctylfluorene-2,7-diyl) (PF) solutions of various solvents, and in thin films deposited from them. The good correlation of MEH-PPV absorption and emission energy with Hildebrandt's dispersive parameter indicate that dispersive forces regulate the effective extent of the luminophore. The excitation and the emission spectra of α and β chains can be distinguished in PF solutions using the steady-state anisotropy. PF films show greater memory effect from the solutions from which they were spun than MEH-PPV. Anisotropy of MEH-PPV is very low, both in solutions and in films reflecting efficient energy migration. Anisotropy of PF in solutions and films demonstrates great differences in energy transfer efficiency within the α and β phases, while there is no energy transfer between these chain conformations. © 2009. |
format |
JOUR |
author |
Cossiello, R.F. Susman, M.D. Aramendía, P.F. Atvars, T.D.Z. |
author_facet |
Cossiello, R.F. Susman, M.D. Aramendía, P.F. Atvars, T.D.Z. |
author_sort |
Cossiello, R.F. |
title |
Study of solvent-conjugated polymer interactions by polarized spectroscopy: MEH-PPV and Poly(9,9′-dioctylfluorene-2,7-diyl) |
title_short |
Study of solvent-conjugated polymer interactions by polarized spectroscopy: MEH-PPV and Poly(9,9′-dioctylfluorene-2,7-diyl) |
title_full |
Study of solvent-conjugated polymer interactions by polarized spectroscopy: MEH-PPV and Poly(9,9′-dioctylfluorene-2,7-diyl) |
title_fullStr |
Study of solvent-conjugated polymer interactions by polarized spectroscopy: MEH-PPV and Poly(9,9′-dioctylfluorene-2,7-diyl) |
title_full_unstemmed |
Study of solvent-conjugated polymer interactions by polarized spectroscopy: MEH-PPV and Poly(9,9′-dioctylfluorene-2,7-diyl) |
title_sort |
study of solvent-conjugated polymer interactions by polarized spectroscopy: meh-ppv and poly(9,9′-dioctylfluorene-2,7-diyl) |
url |
http://hdl.handle.net/20.500.12110/paper_00222313_v130_n3_p415_Cossiello |
work_keys_str_mv |
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