Relationship between surface potential and second harmonic generation in chromophore-doped poly(ethylene oxide)/atactic-poly(methyl methacrylate) blends

The intensity of second harmonic (SH) light, generated by passing a laser beam through corona poled films of poly(ethylene oxide)/atactic‐poly(methyl methacrylate), PEO/a‐PMMA blends molecularly doped by 4‐anilino‐4'‐nitroazobenzene (DO3), is studied as a function of time, temperature, and comp...

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Bibliographic Details
Published in:Polymer engineering and science 1999-02, Vol.39 (2), p.261-267
Main Authors: Vannikov, A. V., Vernel, J., Mal'Tsev, E. I., Savel'Ev, V. V., Rychwalski, R. W.
Format: Article
Language:English
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Summary:The intensity of second harmonic (SH) light, generated by passing a laser beam through corona poled films of poly(ethylene oxide)/atactic‐poly(methyl methacrylate), PEO/a‐PMMA blends molecularly doped by 4‐anilino‐4'‐nitroazobenzene (DO3), is studied as a function of time, temperature, and composition. SH intensity decay kinetics at room temperature is entirely controlled by the time‐dependent surface potential decrease (SPD). In turn, the SPD is determined by the conductivity of polymeric films and the free volume. The latter is a function of temperature history and blend composition.
ISSN:0032-3888
1548-2634
DOI:10.1002/pen.11412