Structural property relationships in conjugated polymers

P. Lynch, L. O'Neill, Jamie Whelan, M. McNamara, H. J. Byrne

    Research output: Contribution to journalConference article

    Abstract

    The synthesis of a series of PPV derivative polymers by the Wittig-Homer reaction is described. The structure of each polymer is varied and the effects of these variations on the optical properties is explored. The effects of alkyloxy side chains is observed between the PPV derivatives Poly(-p-phenylvinylene-co-2,5-bis-octyloxy phenylvinylene.) PPV-OPV and Poly (para-2,5-bis-(n-octyloxy)-phenylvinylene) POPV. The phenyl units of the soluble PPV derivative POPV are replaced by alternate naphthyl units in the polymer Poly(2,5-bis(n-octyloxy)-1,4-phenylene vinylene-1,5-bis(n-octyloxy)-2,6- naphthylene vinylene) POPN-ONV and then fully by naphthyl units in Poly(2,6-bis-(n-octyloxy)-1,5-NaphthyleneVinylene) PONV. The addition of alkyloxy sidechains served to red shift the fluorescence emission as expected. The systematic conversion of phenyl to naphthyl units blue shifted the emission considerably while reducing the Stokes shift. There is evidence to suggest some localization of the n electrons over the aromatip units of the polymer backbone. PONV is shown to have greater stability towards photo-oxidation then either POPV or PPV-OPV.

    Original languageEnglish (US)
    Article number29
    Pages (from-to)242-252
    Number of pages11
    JournalProceedings of SPIE - The International Society for Optical Engineering
    Volume5826
    DOIs
    StatePublished - Jan 1 2005
    EventOpto-Ireland 2005: Optical Sensing and Spectroscopy - Dublin, Ireland
    Duration: Apr 4 2005Apr 6 2005

    Fingerprint

    Conjugated Polymers
    Conjugated polymers
    Structural Properties
    Structural properties
    Polymers
    Unit
    polymers
    Derivatives
    Derivative
    Photooxidation
    photooxidation
    red shift
    Backbone
    Stokes
    Optical properties
    Oxidation
    Fluorescence
    Alternate
    Optical Properties
    optical properties

    Keywords

    • Conjugated
    • Optical absorbance and emission spectroscopy
    • Photo oxidation
    • Poly para phenylvenylene derivatives

    ASJC Scopus subject areas

    • Electronic, Optical and Magnetic Materials
    • Condensed Matter Physics
    • Computer Science Applications
    • Applied Mathematics
    • Electrical and Electronic Engineering

    Cite this

    Structural property relationships in conjugated polymers. / Lynch, P.; O'Neill, L.; Whelan, Jamie; McNamara, M.; Byrne, H. J.

    In: Proceedings of SPIE - The International Society for Optical Engineering, Vol. 5826, 29, 01.01.2005, p. 242-252.

    Research output: Contribution to journalConference article

    Lynch, P. ; O'Neill, L. ; Whelan, Jamie ; McNamara, M. ; Byrne, H. J. / Structural property relationships in conjugated polymers. In: Proceedings of SPIE - The International Society for Optical Engineering. 2005 ; Vol. 5826. pp. 242-252.
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