Hybrid org.-inorg. materials doped with zwitterionic push-pull chromophores with high hyperpolarizability have been synthesized by a sol-gel procedure. A large chromophore concn. was reached by using N-(hydroxyethyl)carbazole as a phys. spacer (preventing the dye aggregation). Spin-coated doped films were elec. poled and second harmonic generation measurements performed in situ. During the thermally assisted poling under a N2 atmosphere, only the carbazole mols. degraded. Second-harmonic generation measurements gave an estn. of the nonlinear coeff., r33, of 38 pm V-1 at 1064 nm. [on SciFinder (R)]; Dipartimento di Ingegneria Meccanica Settore Materiali, Universita di Padova,Padua,Italy.; URL \#1: E:/!sandro/miei\bpdf/2004\b71\bAdvFunctMater.pdf
Brusatin, G., Abbotto, A., Beverina, L., Pagani, G., Casalboni, M., Sarcinelli, F., et al. (2004). Poled sol-gel materials with heterocycle push-pull chromophores that confer enhanced second-order optical nonlinearity. ADVANCED FUNCTIONAL MATERIALS, 14(12), 1160-1166 [10.1002/adfm.200305139].
Poled sol-gel materials with heterocycle push-pull chromophores that confer enhanced second-order optical nonlinearity
ABBOTTO, ALESSANDRO;BEVERINA, LUCA;PAGANI, GIORGIO ALBERTO;
2004
Abstract
Hybrid org.-inorg. materials doped with zwitterionic push-pull chromophores with high hyperpolarizability have been synthesized by a sol-gel procedure. A large chromophore concn. was reached by using N-(hydroxyethyl)carbazole as a phys. spacer (preventing the dye aggregation). Spin-coated doped films were elec. poled and second harmonic generation measurements performed in situ. During the thermally assisted poling under a N2 atmosphere, only the carbazole mols. degraded. Second-harmonic generation measurements gave an estn. of the nonlinear coeff., r33, of 38 pm V-1 at 1064 nm. [on SciFinder (R)]; Dipartimento di Ingegneria Meccanica Settore Materiali, Universita di Padova,Padua,Italy.; URL \#1: E:/!sandro/miei\bpdf/2004\b71\bAdvFunctMater.pdf
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