Intermolecular Interactions in Organic Dye Monolayers Formed by Langmuir-Blodgett Technique |
| D. Bauman
Faculty of Technical Physics, Poznań University of Technology, Nieszawska 13A, 60-965 Poznań, Poland |
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| Langmuir and Langmuir-Blodgett films of some organic dyes (perylene like dyes, derivatives of 4-amino-naphthali-mide, derivatives of naphthoylene-benzi-mida-zole, azo dyes) and their mixtures with thermotropic liquid crystal or arachidic acid have been investigated. Surface pressure as a function of the mean molecular area for the Langmuir films were measured and information about organization of molecules at the air-water interface has been obtained. Absorption spectra in situ for the Langmuir films and both absorption and fluorescence spectra for Langmuir-Blodgett films were recorded. The results obtained from spectroscopic studies have led to conclusions about formation of self aggregates of dye molecules, both in ground and excited states, at the phases interfaces. |
| DOI: 10.12693/APhysPolA.117.525 PACS numbers: 68.18.-g, 68.47.Pe, 78.40.Me, 78.55.Kz |