We found a match
Your institution may have access to this item. Find your institution then sign in to continue.
- Title
Regularly Tuning Quantum Interference in Single‐Molecule Junctions through Systematic Substitution of Side Groups with Varied Electron Effects<sup>†</sup>.
- Authors
Xie, Xianjing; Zhang, Yirong; Zhang, Junrui; Cui, Xingyuan; Liu, Wei; Liu, Xunshan
- Abstract
Comprehensive Summary: Investigating the quantum interference effect in single molecules is essential to comprehensively understand the underlying mechanism of single‐molecule charge transport. In this study, we employed the mother molecule m‐OPE and introduced a series of side groups with various electronic effects at the 2‐position of the central phenyl ring, creating four daughter m‐OPE derivatives. The single molecular conductivities of these molecule wires were measured using the scanning tunneling microscope breaking junction technique. Our findings demonstrate that the substitutions regularly modulate the destructive quantum interference occurring within the m‐OPE molecules. By combining optical and electrochemical investigations, along with density functional theory computations, we discover that the conductivity of the molecules corresponds to the electron‐donating/withdrawing ability of the substituents. Specifically, by adjusting the electron structures of the molecular backbone, we can systematically tailor the destructive quantum interference in the m‐OPE molecules.
- Subjects
QUANTUM interference; PERMUTATION groups; SCANNING tunneling microscopy; MOLECULAR structure; SINGLE molecules
- Publication
Chinese Journal of Chemistry, 2024, Vol 42, Issue 11, p1217
- ISSN
1001-604X
- Publication type
Article
- DOI
10.1002/cjoc.202300706