Single-Molecule Conductance of Staffanes.

ABSTRACT: We report the first conductance measurements of [n]staffane (bicyclopentane) oligomers in single-molecule junctions. Our studies reveal two quantum transport characteristics unique to staffanes that emerge from their strained bicyclic structure. First, though staffanes are composed of weakly conjugated C-C σ-bonds, staffanes carry a shallower conductance decay value (β=0.84±0.02 n^-1) than alkane chain analogs (β=0.96±0.03 n^-1) when measured with the scanning tunneling microscopy break junction (STM-BJ) technique. Staffanes are thus more conductive than other σ-bonded organic backbones reported in the literature on a per atom basis. Density functional theory (DFT) calculations suggest staffane backbones are more effective conduits for charge transport because their sig

SUBMITTER: Pimentel AE 

PROVIDER: S-EPMC11753604 | biostudies-literature | 2025 Jan

REPOSITORIES: biostudies-literature