Mechanically Stable Kondo Resonance in an Organic Radical Molecular Junction

The Journal of Physical Chemistry C, Journal Year: 2025, Volume and Issue: 129(6), P. 3152 - 3157

Published: Jan. 30, 2025

Organic radicals are promising candidates for molecular spintronics due to their intrinsic magnetic moment, low spin–orbit coupling, and weak hyperfine interactions. Using a mechanically controlled break junction setup at both room temperatures (6 K), we analyze the difference in charge transport between two nitronyl nitroxide (NNR): one with backbone para configuration, other meta configuration. We find that para-NNR displays Kondo resonance 6 K, while meta-NNR does not. Additionally, observed peak differential conductance has roughly constant width independent of conductance, consistent scenario where molecule is coupled asymmetrically electrodes.

Language: Английский

Radical-Induced Single-Molecule Conductance Tuning in 9,9'-Bifluorenylidene Derivatives

Chemical Science, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 1, 2025

A series of 9,9′-bifluorenylidene derivatives demonstrate orthogonalization non-conducting (between radical sites) and conducting thiomethyl groups) paths. Precise injections significantly reduce single-molecule conductance.

Language: Английский

Single-Molecule Conductance of Neutral Closed-Shell and Open-Shell Diradical Indenofluorenes

Journal of the American Chemical Society, Journal Year: 2024, Volume and Issue: 146(43), P. 29977 - 29986

Published: Oct. 18, 2024

Organic diradicals are highly promising candidates as future components in molecular electronic and spintronic devices because of their low spin-orbit coupling. To advance toward final circuit realizations, a thorough knowledge the behavior within single-molecule junction framework is imperative. In this work, we have measured for first time conductance neutral open-shell diradical compound, [2,1-

Language: Английский