BOUTET, Sandrine; GAMARD, A.; JOUSSEAUME, Bernard; TOUPANCE, Thierry; CAMPET, Guy; CACHET, Hubert

doi:10.1515/MGMC.2002.25.1-2.59

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BOUTET, Sandrine
Laboratoire de chimie organique et organométallique [LCOO]
Institut de Chimie de la Matière Condensée de Bordeaux [ICMCB]

GAMARD, A.
Laboratoire de chimie organique et organométallique [LCOO]
Institut de Chimie de la Matière Condensée de Bordeaux [ICMCB]

JOUSSEAUME, Bernard
Laboratoire de chimie organique et organométallique [LCOO]

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Main Group Metal Chemistry. 2002, vol. 25, n° 1, p. 59-65

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Résumé en anglais

Alkoxyfluorodi(β-diketonato)tins (1), trialkynyl(fluoroorgano)tins (2) and difluorodi(β-diketonato)tin (3) have been synthesized to prep. F-doped tin dioxide materials by the sol-gel route. After hydrolysis and densification in air at 550°, these compds. lead to nanocryst. tin dioxide powders contg. the required amt. of doping fluorine (4-8 at.%) and exhibiting a resistivity at least two times lower than that reported for similar tin dioxide materials. In the case of 2, thermally induced β- or γ-elimination reactions were evidenced by TG/MS, allowing the insertion of fluorine into the oxide network and the clean removal of the undesirable orgs. The characterization of sol-gel thin films prepd. from 1 and 3 are also described. They exhibit excellent optical transparencies but resistivities (p > 7 10-2 Ω.cm) lower than those of thin layers prepd. by pyrosol deposition from SnCl4-NH4F mixts. (p < 10-3 Ω.cm). The presence of polluting carbon and the porosity of the sol-gel films are thought to be responsible for these resistivities.< Réduire

Mots clés en anglais

Tin dioxide

Organic compounds

Sol-gel

Chemical synthesis

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Fluorinated organotins as precursors of F-doped tin dioxide

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