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Electric-field-induced layer-by-layer fabrication of inorganic–organic hybrid second-order nonlinear optical films
- Source :
-
Journal of Colloid & Interface Science . Aug2009, Vol. 336 Issue 2, p470-476. 7p. - Publication Year :
- 2009
-
Abstract
- Abstract: This work focused on the development of a novel method for molecular level assembly and processing of inorganic–organic hybrid second-order nonlinear optical (SONLO) multilayer films. Aromatic diazo group linked silicon sol was first synthesized and used as a polycation. This oligomer was assembled into inorganic–organic hybrid SONLO multilayer films by electric-field-induced layer-by-layer assembly technique with a low molecular weight chromophore molecule as an anion. After UV irradiation, the electrostatic interaction between layers converted to covalent bonds. Large second-harmonic generation signal of the assembled film was observed, which confirmed that the chromophore in the film had a high degree of molecular orientation as assembled under the electric field. As the cross-linked structure and silicon oxygen meshwork in the films, the resulting inorganic–organic hybrid multilayer films displayed good thermal and chemical stability, and excellent NLO properties. [Copyright &y& Elsevier]
Details
- Language :
- English
- ISSN :
- 00219797
- Volume :
- 336
- Issue :
- 2
- Database :
- Academic Search Index
- Journal :
- Journal of Colloid & Interface Science
- Publication Type :
- Academic Journal
- Accession number :
- 42970475
- Full Text :
- https://doi.org/10.1016/j.jcis.2009.04.010