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Relationship between surface potential and second harmonic generation in chromophore‐doped poly(ethylene oxide)/atactic‐poly(methyl methacrylate) blends
Author(s) -
Vannikov A. V.,
Vernel J.,
Mal'Tsev E. I.,
Savel'Ev V. V.,
Rychwalski R. W.
Publication year - 1999
Publication title -
polymer engineering and science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.503
H-Index - 111
eISSN - 1548-2634
pISSN - 0032-3888
DOI - 10.1002/pen.11412
Subject(s) - materials science , ethylene oxide , methyl methacrylate , oxide , doping , poly(methyl methacrylate) , polymer chemistry , chromophore , photochemistry , polymerization , composite material , polymer , optoelectronics , copolymer , chemistry , metallurgy
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.