Phase separations in conjugated polymer (MEH-PPV) and non-conjugated polymer (PMMA) are studied by a near-field scanning microscopy and spectroscopy. Micron scale binary decomposition without photoluminescence spectrum shift occurs when the blending ratio (MEH-PPV/PMMA) is larger than one. When the ratio is smaller, the film becomes homogeneous and an /spl sim/100 nm blue shift of PL spectrum happened. The new PL spectrum indicates the excitons in MEH-PPV chains are interrupted by the PMMA, and thus emitting light as PPV oligomers.


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    Titel :

    Light emission in phase separated conjugated and non-conjugated polymer blends


    Beteiligte:
    Shen-Yi Hsu, (Autor:in) / Hsieh-Li Chou, (Autor:in) / Pei-Kuen Wei, (Autor:in)


    Erscheinungsdatum :

    2003-01-01


    Format / Umfang :

    86144 byte




    Medientyp :

    Aufsatz (Konferenz)


    Format :

    Elektronische Ressource


    Sprache :

    Englisch



    Light emission in phase separated conjugated and non-conjugated polymer blends

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