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Charge Transport Induced by Formation of a Single Covalent Bond



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Quantum leap: A molecular tip of a scanning tunneling microcope is utilized to detect conductance change induced by in situ covalent bond formation between single molecules. Thiol groups of sample and tip molecules form a disulfide linkage, which bridges the gap between the gold tip and the substrate (picture, top). Current jumps take place by electron transport through the molecular bridge, and this electron transport is successfully quantified (picture, bottom).

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