J. Phys. IV France 114 (2004) 455
Interaction and aggregation of TTF oligomers towards supramolecular chemistryM. Iyoda1, 1, M. Hasegawa1, K. Hara1, J. Takano1, E. Ogura1 and Y. Kuwatani1
1 Department of Chemistry, Graduate School of Science, Tokyo Metropolitan University, Hachioji, Tokyo 192-0397, Japan
Dimeric and oligomeric TTFs have an inherent multi-functionality. Thus, radical salts derived from bi-TTF and its derivatives show high conductivities, reflecting either the enhancement of dimensionality or the control of stoichiometry. In the case of TTF oligomers, supramolecular structures can be constructed using association of TTFs. Thus, quarter-TTF adopts a zigzag structure, and its tetracation forms a helical structure through the intramolecular -dimer formation of the terminal radical cations. Poly(tetrathiafulvalenylethynyl)benzenes dimerize in solutions, and tetrathiafulvalenylacetylene macrocycles containing TTF and hexadehydroannulene units show interesting properties such as solvatochromism, electrochromism, sandwitch complex formation, and electrical conductivities. Key words. TTF dimers - TTF oligomers - quarter TTF - dimensionality - supramolecular structure - poly(tetrathiafulvalenylethynyl)benzenes - tetrathiafulvalenylacetylene macrocycles.
© EDP Sciences 2004