title: Synthesis, crystal structure, and physical property of sterically unprotected thiophene/phenylene co-oligomer radical cations: a conductive π-π bonded supermolecular meso-helix.
abstract: Sterically unprotected thiophene/phenylene co-oligomer radical cation salts BPnT(·+) [Al(OR(F))(4)](-) (OR(F)=OC(CF(3))(3), n=1-3) have been successfully synthesized. These newly synthesized salts have been characterized by UV/Vis-NIR absorption and EPR spectroscopy, and single-crystal X-ray diffraction analysis. Their conductivity increases with chain length. The formed meso-helical stacking by cross-overlapping radical cations of BP2T(·+) is distinct from previously reported face-to-face overlaps of sterically protected (co-)oligomer radical cations.
authors.affiliation: State Key Laboratory of Coordination Chemistry, School of Chemistry and Chemical Engineering, Nanjing University, 210093, P. R. China.
authors.forename: Xiaoyu
authors.initials: X
authors.lastname: Chen
authors.forename: Binbin
authors.initials: B
authors.lastname: Ma
authors.forename: Shuang
authors.initials: S
authors.lastname: Chen
authors.forename: Yizhi
authors.initials: Y
authors.lastname: Li
authors.forename: Wei
authors.initials: W
authors.lastname: Huang
authors.forename: Jing
authors.initials: J
authors.lastname: Ma
authors.forename: Xinping
authors.initials: X
authors.lastname: Wang