6533b7d0fe1ef96bd125b047
RESEARCH PRODUCT
Photoinduced phenomena in corona poled polar organic films.
Burkhard StillerInta MuzikanteEgils FonavsLudwig Brehmersubject
ChemistryPhotochemistryPolymersSurface PropertiesChemical polarityAnalytical chemistrySecond-harmonic generationMembranes ArtificialSurfaces and InterfacesChromophoreMicroscopy Atomic ForceAcceptorSensitivity and SpecificityCondensed Matter::Materials ScienceDelocalized electronDipoleColloid and Surface ChemistryChemical physicsMonolayerMoleculePhysical and Theoretical ChemistryParticle Sizedescription
Abstract Organic materials have received considerable attention because of their large dipole moments and optical nonlinearities. The optically induced switching of material properties is important for studying the optoelectronic effects including second harmonic generation. Organic materials for photonic applications contain chromophore dipole which consist of acceptor and donor groups bridged by a delocalized π-electron system. Both theoretical and experimental data show a reversible highly dipolar photoinduced intra molecular charge transfer in betaine type molecules accompanied by change of the sign and the value of the dipole moment. The arrangement of polar molecules in films is studied both by atom force microscopy and surface potential measurements. To understand the photo response of these materials, their spectroscopic and electrical properties are studied. The morphology and photoinduced surface potential switching of the self-assembled monolayers and polymer films are investigated.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2005-02-25 | Advances in colloid and interface science |