European Commission through NMP3-CT2003505478 contract (STRP-ODEON) and MIUR (FIRB 2001-National Strategic Project RBNE01P4JF) are greatfully acknowledged for financial support.
Poled Sol–Gel Materials With Heterocycle Push–Pull Chromophores that Confer Enhanced Second-Order Optical Nonlinearity†
Article first published online: 9 DEC 2004
Copyright © 2004 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim
Advanced Functional Materials
Volume 14, Issue 12, pages 1160–1166, December, 2004
How to Cite
Brusatin, G., Abbotto, A., Beverina, L., Pagani, G. A., Casalboni, M., Sarcinelli, F. and Innocenzi, P. (2004), Poled Sol–Gel Materials With Heterocycle Push–Pull Chromophores that Confer Enhanced Second-Order Optical Nonlinearity. Adv. Funct. Mater., 14: 1160–1166. doi: 10.1002/adfm.200305139
- Issue published online: 9 DEC 2004
- Article first published online: 9 DEC 2004
- Manuscript Accepted: 11 MAY 2004
- Manuscript Received: 17 NOV 2003
- Electro optical materials;
- Nonlinear optical materials;
- Sol–gel materials
Hybrid organic–inorganic materials doped with zwitterionic push–pull chromophores with high hyperpolarizability have been synthesized by a sol–gel procedure. A large chromophore concentration was reached by using N-(hydroxyethyl)carbazole as a physical spacer (preventing the dye aggregation). Spin-coated doped films were electrically poled and second harmonic generation measurements performed in situ. During the thermally assisted poling under a N2 atmosphere, only the carbazole molecules degraded. Second-harmonic generation measurements gave an estimation of the nonlinear coefficient, r33, of 38 pm V–1 at 1064 nm.