Abstract:
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.
Registro:
Documento: |
Artículo
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Título: | Study of solvent-conjugated polymer interactions by polarized spectroscopy: MEH-PPV and Poly(9,9′-dioctylfluorene-2,7-diyl) |
Autor: | Cossiello, R.F.; Susman, M.D.; Aramendía, P.F.; Atvars, T.D.Z. |
Filiación: | Universidade Estadual de Campinas, Instituto de Química, Caixa Postal 6154, Campinas, 13084-971 SP, Brazil INQUIMAE, Departamento de Química Inorgánica, Analítica y Química Física, Facultad de Ciencias Exactas y Naturales, Pabellon 2, Ciudad Universitaria, C1428EHA Buenos Aires, Argentina
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Palabras clave: | 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 |
Año: | 2010
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Volumen: | 130
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Número: | 3
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Página de inicio: | 415
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Página de fin: | 423
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DOI: |
http://dx.doi.org/10.1016/j.jlumin.2009.10.006 |
Título revista: | Journal of Luminescence
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Título revista abreviado: | J Lumin
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ISSN: | 00222313
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CODEN: | JLUMA
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Registro: | https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00222313_v130_n3_p415_Cossiello |
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Citas:
---------- APA ----------
Cossiello, R.F., Susman, M.D., Aramendía, P.F. & Atvars, T.D.Z.
(2010)
. Study of solvent-conjugated polymer interactions by polarized spectroscopy: MEH-PPV and Poly(9,9′-dioctylfluorene-2,7-diyl). Journal of Luminescence, 130(3), 415-423.
http://dx.doi.org/10.1016/j.jlumin.2009.10.006---------- CHICAGO ----------
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)"
. Journal of Luminescence 130, no. 3
(2010) : 415-423.
http://dx.doi.org/10.1016/j.jlumin.2009.10.006---------- MLA ----------
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)"
. Journal of Luminescence, vol. 130, no. 3, 2010, pp. 415-423.
http://dx.doi.org/10.1016/j.jlumin.2009.10.006---------- VANCOUVER ----------
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). J Lumin. 2010;130(3):415-423.
http://dx.doi.org/10.1016/j.jlumin.2009.10.006