A poly(methyl methacrylate) (PMMA) composite film containing 4 wt% of the strongly second order NLO active ionic material [(E)-N,N-dimethylamino-N'-methylstilbazonium][Cu(5)I(6)] (1), obtained by spin coating of a CH(3)CN solution on a glass substrate, shows by a two step process (electric poling followed by controlled thermal annealing up to 140 degrees C) in situ growth of nanocrystals, some of which are aligned, with a size of less than 400 nm as supported by TEM and GIXRD evidence. A long lasting second harmonic generation (SHG) is produced which is stable even after exposure to water vapour for one night.
In situ growth in a PMMA film of oriented nanocrystals of the hybrid inorganic-organic acentric material [(E)-N,N-dimethylamino-N '-methylstilbazolium][Cu(5)I(6)]
MATTEI, GIOVANNI
2011
Abstract
A poly(methyl methacrylate) (PMMA) composite film containing 4 wt% of the strongly second order NLO active ionic material [(E)-N,N-dimethylamino-N'-methylstilbazonium][Cu(5)I(6)] (1), obtained by spin coating of a CH(3)CN solution on a glass substrate, shows by a two step process (electric poling followed by controlled thermal annealing up to 140 degrees C) in situ growth of nanocrystals, some of which are aligned, with a size of less than 400 nm as supported by TEM and GIXRD evidence. A long lasting second harmonic generation (SHG) is produced which is stable even after exposure to water vapour for one night.File in questo prodotto:
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