title: Comparison of the conductance of three types of porphyrin-based molecular wires: β,meso,β-fused tapes, meso-Butadiyne-linked and twisted meso-meso linked oligomers.
abstract: The length dependence of charge transport is evaluated in three families of porphyrin-based wires. Planar edge-fused tapes and alkyne-linked oligomers mediate efficient charge transport with exceptionally shallow distance dependence, whereas the conductances of the twisted singly linked chains decrease steeply with increasing oligomer length. The planar tapes are more conjugated than the alkyne-linked oligomers, but these two types of wires have similar conductance attenuation factors.
authors.affiliation: Chemistry Department, University of Liverpool, Liverpool L69 7ZD, UK.
authors.forename: Gita
authors.initials: G
authors.lastname: Sedghi
authors.forename: Louisa J
authors.initials: LJ
authors.lastname: Esdaile
authors.forename: Harry L
authors.initials: HL
authors.lastname: Anderson
authors.forename: Santiago
authors.initials: S
authors.lastname: Martin
authors.forename: Donald
authors.initials: D
authors.lastname: Bethell
authors.forename: Simon J
authors.initials: SJ
authors.lastname: Higgins
authors.forename: Richard J
authors.initials: RJ
authors.lastname: Nichols
mesh_terms: D000480:Alkynes / Q000737:chemistry*; D004553:Electric Conductivity; D015394:Molecular Structure; D011166:Porphyrins / Q000737:chemistry*
chemical_list: D000480:Alkynes; D011166:Porphyrins