New, neutral, meso-substituted tetrathia[22]annulene[2,1,2,1] aromatic macrocyclic architectures display p-type semiconductor behaviour and constitute efficacious molecular field-effect transistors with reproducible bulk-like carrier mobility (as high as 0.63 cm(2) V(-1) S(-1)) on highly crystalline thin films deposited on octadecyltrichlorosilane modified SiO(2).

We investigate multiterminal quantum transport through single monocyclic aromatic annulene molecules, and their derivatives, using the nonequilibrium Green function approach within the self-consistent Hartree-Fock approximation. We propose a new device concept, the quantum interference effect transistor, that exploits perfect destructive interference stemming from molecular symmetry and control...

Two types of annulene which may show significant Möbius aromatic character and bond and twist delocalisation are proposed; triplet states with 4n + 2 occupancy of the p pi array of atomic orbitals and a novel 8-pi carbeno[8]heteroannulene ring system 1 where the Hückel highly antiaromatic nature as a planar system can be attenuated or even reversed by the C2 symmetric Möbius distortion.