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][Cu5I6] (1), obtained by spin coating of a CH3CN solution on a glass substrate, shows by a two step process (electric poling followed by controlled thermal annealing up to 140°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][Cu5I6] / R. Macchi, E. Cariati, D. Marinotto, E. Tordin, R. Ugo, G. Santoro, M.C. Ubaldi, S.M. Pietralunga, G. Mattei. - In: JOURNAL OF MATERIALS CHEMISTRY. - ISSN 0959-9428. - 21:26(2011), pp. 9778-9783. [10.1039/c1jm11424g]
In situ growth in a PMMA film of oriented nanocrystals of the hybrid inorganic-organic acentric material [(E)-N,N-dimethylamino-N'-methylstilbazolium][Cu5I6]
R. MacchiPrimo
;E. CariatiSecondo
;D. Marinotto;E. Tordin;
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][Cu5I6] (1), obtained by spin coating of a CH3CN solution on a glass substrate, shows by a two step process (electric poling followed by controlled thermal annealing up to 140°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.
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