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Your search keyword '"Wojciechowski, Roman"' showing total 16 results
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16 results on '"Wojciechowski, Roman"'

2. Harnessing ICl reduction processes for synthesis of different BEDT-TTF-based molecular conductors

Author

Laukhina, Elena, Tkacheva, Vladislava, Chuev, Igor, Wojciechowski, Roman, and Ulanski, Jacek

Subjects
Iodine compounds -- Chemical properties, Chlorides -- Chemical properties, Dichloropropane -- Chemical properties, Ethylene -- Chemical properties, Thiols -- Chemical properties, Chemicals, plastics and rubber industries
Abstract

The ICl reduction process, used to form I(sub 3)(super -), I(sub 2)Cl(super -), and ICl(sub 2)(super -) anions and prepare different molecular conductors based on trihalide anions and bis(ethylenedithio)tetrathiafulvalene (BEDT-TTF) is described. It is seen that molecular conductors reveal semiconducting and metallic transport properties and that in the reaction media with polarity less than 18.4 D only the I(sub 3)(super -) anion is incorporated in the BEDT-TTF-based molecular crystals.

Published
2005

3. New flexible low-density metallic materials containing the (BEDT-TTF) (sub)2 (I (sub)x Br (sub)1-x) (sub)3 molecular metals as active components

Author

Laukhina, Elena, Tkacheva, Vladeslava, Chuev, Igor', Yagubskii, Eduard, Vidal-Gancedo, Jose, Mas-Torrent, Marta, Rovira, Concepcio, Veciana, Jaume, Khasanov, Salavat, Wojciechowski, Roman, and Ulanski, Jacek

Subjects
Chemistry, Physical and theoretical -- Research, Polymers -- Physiological aspects, Molecules -- Analysis, Nitrogen -- Physiological aspects, Chemicals, plastics and rubber industries
Published
2001

10. Polymorphism of a New Bis(ethylenedithio)tetrathiafulvalene (BEDT-TTF) Based Molecular Conductor; Novel Transformations in Metallic BEDT-TTF Layers

Author

Laukhina, Elena, primary, Tkacheva, Vladeslava, additional, Chekhlov, Aleksandr, additional, Yagubskii, Eduard, additional, Wojciechowski, Roman, additional, Ulanski, Jacek, additional, Vidal-Gancedo, Jose, additional, Veciana, Jaume, additional, Laukhin, Vladimir, additional, and Rovira, Concepció, additional

Published
2004
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13. New Flexible Low-Density Metallic Materials Containing the (BEDT-TTF)2(IxBr1-x)3 Molecular Metals as Active Components

Author

Laukhina, Elena, primary, Tkacheva, Vladeslava, additional, Chuev, Igor', additional, Yagubskii, Eduard, additional, Vidal-Gancedo, Jose, additional, Mas-Torrent, Marta, additional, Rovira, Concepció, additional, Veciana, Jaume, additional, Khasanov, Salavat, additional, Wojciechowski, Roman, additional, and Ulanski, Jacek, additional

Published
2001
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14. IR and Raman spectra of β″-(BEDT-TTF)2RCH2SO3(R = SF5, CF3): dimerization related to hydrogen bondingElectronic supplementary information (ESI) available: Figures showing the atomic labeling scheme and thermal ellipsoids of the BEDT-TTF molecules and CF3CH2SO3−anions at 298 and 150 K. CCDC reference numbers 713195 and 713196. For ESI and crystallographic data in CIF or other electronic format see DOI: 10.1039/b822253c

Author

Olejniczak, Iwona, Barszcz, Bolesaw, Szutarska, Anna, Graja, Andrzej, Wojciechowski, Roman, Schlueter, John A., Hata, Aaron N., and Ward, Brian H.

Abstract

The β″-(BEDT-TTF)2CF3CH2SO3organic conductor has been synthesized by electrocrystallization. The crystal structure was determined by single-crystal X-ray diffraction and electronic properties examined. The polarized IR reflectance of β″-(BEDT-TTF)2SF5CH2SO3and β″-(BEDT-TTF)2CF3CH2SO3, as well as Raman spectra of β″-(BEDT-TTF)2CF3CH2SO3have been measured as a function of temperature. Both materials display charge-nonequivalence within the whole temperature range and unusual activation of vibronic modes with lowering the temperature. In particular, electron-molecular vibration coupling is involved in the activation of the ν27mode. The effect is discussed in terms of lattice dimerization involving hydrogen bonding between the anion layer and the conducting BEDT-TTF layer. [ABSTRACT FROM AUTHOR]

Published
2009
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16. IR and Raman spectra of beta''-(BEDT-TTF)(2)RCH(2)SO(3) (R = SF(5), CF(3)): dimerization related to hydrogen bonding.

Author

Olejniczak I, Barszcz B, Szutarska A, Graja A, Wojciechowski R, Schlueter JA, Hata AN, and Ward BH

Abstract

The beta''-(BEDT-TTF)(2)CF(3)CH(2)SO(3) organic conductor has been synthesized by electrocrystallization. The crystal structure was determined by single-crystal X-ray diffraction and electronic properties examined. The polarized IR reflectance of beta''-(BEDT-TTF)(2)SF(5)CH(2)SO(3) and beta''-(BEDT-TTF)(2)CF(3)CH(2)SO(3), as well as Raman spectra of beta''-(BEDT-TTF)(2)CF(3)CH(2)SO(3) have been measured as a function of temperature. Both materials display charge-nonequivalence within the whole temperature range and unusual activation of vibronic modes with lowering the temperature. In particular, electron-molecular vibration coupling is involved in the activation of the nu(27) mode. The effect is discussed in terms of lattice dimerization involving hydrogen bonding between the anion layer and the conducting BEDT-TTF layer.

Published
2009
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