Quantum Interference Effect in Saturated Systems: Effect of Anchoring Group Position on Conductance of Bipiperidines and their in-situ Derived Dithiocarbamates.

ABSTRACT: This study investigates quantum interference in σ-only molecular systems, focusing on the impact of anchoring group nature and its position. Using a combined approach of mechanically controlled break junction experiments and quantum transport calculations, we demonstrate that meta-connected σ-conducting bipiperidine-based molecular junctions exhibit higher conductance than para-connected ones. This trend is opposite to that of the trend typically observed in π-molecular systems, indicating the existence of distinctly different quantum interference phenomenon in σ-only molecular systems. Further, we show that anchoring group modifications achieved through in-situ dithiocarbamylation significantly alters the conductance and decay factors. We also elucidate the mechanism behind multiple condu

SUBMITTER: Rashid U 

PROVIDER: S-EPMC12624308 | biostudies-literature | 2025 Nov

REPOSITORIES: biostudies-literature