Synthesis, characterization, and thermoelectric properties of superconducting (BEDT-TTF)(2)I-3 nanoparticles

Imane Chtioui (1, 2) , C. Faulmann (1) , Dominique De Caro (1, 2) , Kane Jacob (1) , Lydie Valade (1) , P. De Caro (3) , J. Fraxedas (4, 5) , B. Ballesteros (6, 7) , E. Steven (8) , E. S. Choi (8) , M. Lee (8) , S. M. Benjamin (8) , E. Yvenou (9) , J. P. Simonato (9) , A. Carella (9)

1 LCC - Laboratoire de chimie de coordination
2 UT3 - Université Toulouse III - Paul Sabatier
3 CAI - Chimie Agro-Industrielle
4 ICN2 - Catalan Institute of Nanoscience and Nanotechnology
5 BIST - Barcelona Institute of Science and Technology
6 Facultad de Ciencias y Tecnologias Quimicas
7 Instituto de Combustión y Contaminación
8 NHMFL - National High Magnetic Field Laboratory
9 DTNM - Département des Technologies des Nouveaux Matériaux (Ex Département des Technologies des NanoMatériaux)

The synthesis of (BEDT-TTF)(2)I-3 in the presence of two neutral amphiphilic molecules [N-octylfurfurylimine and 1-octanamine, N-(2-thienylmethylene)] leads to single and aggregated nanoparticles of 2 to 6 nm size. The samples contain highly crystalline nanoparticles of the beta(CO)-(BEDT-TTF)(2)I-3 phase, confirmed by XRD. Temperature dependent resistance and magnetic susceptibility studies evidence the superconducting transition characteristics of the beta(CO)-(BEDT-TTF)(2)I-3 phase. The I-V curve of a single nanoparticle aggregate, measured using AFM, exhibits an expected semiconductor-like behaviour. Thermoelectric studies led to a ZT of 1.47 x 10(-3) at 300 K.

Mots clés: PHASE; organic conductors; thin-films; power; gold; alpha-(bedt-ttf)2i3; beta-(bedt-ttf)2i3; nanocrystals; phase

Mots clés: absorption; arrays

Domaines: Chimie de coordination

Imane Chtioui, C. Faulmann, Dominique De Caro, Kane Jacob, Lydie Valade, et al.. Synthesis, characterization, and thermoelectric properties of superconducting (BEDT-TTF)(2)I-3 nanoparticles. Journal of Materials Chemistry C, 2016, 4 (31), pp.7449-7454. ⟨10.1039/c6tc01378c⟩. ⟨hal-01925340⟩