Metallic Langmuir and Langmuir–Blodgett films based on TTF derivatives and fatty acid
| Autor: | Gilles Mabon, Hitoshi Ohnuki, Yasuo Ishizaki, Michel Giffard, Mitsuru Izumi, M. Suzuki, Bernard Desbat, Tatsuro Imakubo, Pierre Delhaes |
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| Rok vydání: | 2002 |
| Předmět: |
chemistry.chemical_classification
Langmuir Materials science Valence (chemistry) Fatty acid Bioengineering Langmuir–Blodgett film Biomaterials Metal Crystallography chemistry.chemical_compound chemistry Mechanics of Materials visual_art Brewster angle microscope visual_art.visual_art_medium Organic chemistry Carboxylate Stearic acid |
| Zdroj: | Materials Science and Engineering: C. 22:227-232 |
| ISSN: | 0928-4931 |
| DOI: | 10.1016/s0928-4931(02)00170-4 |
| Popis: | Recent progress in the metallic conducting Langmuir–Blodgett (LB) films built from TTF derivative and fatty acids is reported. A simple LB method of transferring the mixed Langmuir (L) film of BEDO-TTF (BO) and stearic acid (SA) onto substrates provided metallic conducting LB films. A homogeneous L film formation on the water surface observed by Brewster angle microscope (BAM) is an essential factor for the well-ordered LB films. In the L film, the carboxylate group of fatty acid forms anion layer bringing about a spontaneous formation of mixed valence state (MVS) of BO layer. Similar spontaneous formation was also found in the molecular combination of nonoxygen-substituted donor of EDT-TTF and octadecanesulfonic acid (OS). This type of reaction would be useful for obtaining conducting LB films. For the LB films of BEDO-TTF and stearic acid, we found a negative transverse magnetoresistance at low temperature that was interpreted in the weak localization of a two-dimensional (2D) electronic system based on the well-defined conducting layer. |
| Databáze: | OpenAIRE |
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