Oligothiophenes chiral

Tetraphenylenes and helical p-oligothiophenes as annulated, chiral 7t-con-jugated systems 07SL1799. 

A series of oligothiophenes attached to chiral cyclohexyldiamineZ-diimine were reported by Barbarella and co-workers [102]. The imine derivatives 239 (n = 1-4) were prepared by condensation of diaminocy-clohexane with corresponding formylated oligothiophenes under microwave heating in moderate to good... 

M. Melncci, G. BarbareUa, M. Gazzano, M. Cavallini, F. Biscarini, A. Bongini, F. Piccinelh, M. Monaii, M. Bandini, A. Umani-Ronchi and P. Biscarini, Synthesis, multiphase characterization and helicity control in chiral DACH-linked oligothiophenes, Chem. Eur. J., 12, 7304-7312 (2006). 

M. Funahashi and N. Tamaoki, Electronic conduction in the chiral nematic phase of an oligothiophene derivative, ChemPhysChem, 7, 1193-1197 (2006). 

V. G. Albano, M. Bandini, M. Melucci, M. Monari, F. PiccineUi, S. Tommasi and A. Umani-Ronchi, Novel chiral diamino-oligothiophenes as valuable ligands in Pd-catalyzed allylic alkylations. On the primary role of secondary interactions in asymmetric catalysis, Adv. Synth. Ceded., 347, 1507-1512 (2005). 

Another recent article was published by Takata and co-workers. The polymer was composed of oligothiophene monomers (pink) as a planarity-switchable spacer and a C2-chiral spirobifluorene monomer (green). Under redox conditions, the polymer switched from a one-handed helical shape to a coil-shaped rigid helical foldamer (Figure 5.25). 

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