Kinetic investigation of a chemical process in single-molecule junction

Abstract

Herein, we report on the kinetic investigation for the breakdown of single-molecule junctions.

Elementary processes of DNA surface hybridization resolved by single-molecule kinetics: implication for macroscopic device performance

“…The plateaus were detected by adaptive threshold analysis (ATA), 24 which analyzes the I-t traces based on a recursive low-pass filtering function. 5 A two-dimensional (2D) histogram shows that the statistically most probable plateau appears at 1.3 mG 0 ( Fig. 1c, ESI S1 †).…”

“…4 From the viewpoint of fundamental research, electronic measurements have been also utilized in tracking the chemical processes of a single molecule. 5,6 The chemical reaction can be detected based on the single-molecule conductance modulated by the chemical transformation of the target molecule. Biochemical processes of a single-molecule, in particular, are thoroughly investigated using the conductance measurements as well as fluorescence-based assays, taking advantage of the ease of fluorescent labeling and the larger molecular dimensions.…”

The Characterization of Electronic Noise in the Charge Transport through Single‐Molecule Junctions

“…Later, the kinetics of charge transport and quantum effect size in quantum point contacts were studied in terms of a low‐frequency noise. [ 41 ] These studies obtained experimental results and developed some new theoretical models to qualitatively account for quantum point contact.…”

Nearfield trapping increases lifetime of single-molecule junction by one order of magnitude

“…The telegraphic noise pattern in blinking experiments is associated with thermally activated stochastic junction formation and breaking. 13,14 According to thermodynamic theory, 30 the molecule-tip bond is considered as a dynamic state and the probability to spontaneously break down the bond due to thermal fluctuations increases with time (see detailed information including the S-Au junction specific case in Note S1). 30,31 Independent of the illumination setting, the single-molecule junction can be found in either one of two discrete conduction states of ca.…”

“…11 Typical τ are rather short in the order of tens to hundreds of ms, thus hindering elaborate junction characterization over longer time periods. 6,7,10,14 Immobilising target molecules for longer timescales, i.e. increasing τ, has remained one of ME's central challenges.…”