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Electrochemical Properties and Absorption Spectra of Conducting Films of Tetrathyotetracene Iodids

100%

Kaplunov M. G., Shamaev S. N.

Acta Physica Polonica A

1995

vol. 87

issue 4-5

811-814

Films of tetrathyotetracene (TTT) iodides were obtained by doping of evaporated TTT films with iodine from I-containing solutions. TTT was evaporated onto a conducting substrate which then was used as an anode in KI solution. As a result of electrochemical reaction, iodine penetrated into the TTT film forming conducting TTT iodides. Cyclic voltamogrammes and absorption spectra show at least two stable forms of TTT-I_{x}, differing by iodine contents.

1,1'-Dithiolenes: the Good, the Not Bad, and the Ugly

70%

Cassoux P., Bowlas C. J., Lahlil K., Moradpour A., Bonvoisin J., Launay J.-P.

Acta Physica Polonica A

1995

vol. 87

issue 4-5

743-748

A series of 1, 1'-dithiolate ligands were used in the attempted preparation of metal complexes. These bidentate sulphur ligands were subsequently used in aromatic nucleophilic substitution reactions giving rise to several novel organic donor molecules. The electrochemistry data of two of the donors and their subsequent use in the preparation of donor-acceptor compounds is presented. One donor-acceptor compound exhibited high room temperature conductivity (up to 900 S cm^{-1}) and remained metallic down to low temperature. One donor containing two tetrathiafulvalene units was studied by near infrared absorption spectroscopy. An intervalence transition in the monocation form of this donor was observed, indicating that it behaves as a class II mixed valence compound.

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2 Acta Physica Polonica A

2 1995

1 Bonvoisin J.

1 Bowlas C. J.

1 Cassoux P.

1 Kaplunov M. G.

1 Lahlil K.

1 Launay J.-P.

1 Moradpour A.

1 Shamaev S. N.

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Electrochemical Properties and Absorption Spectra of Conducting Films of Tetrathyotetracene Iodids

1,1'-Dithiolenes: the Good, the Not Bad, and the Ugly