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Multichannel Conductance of Folded Single‐Molecule Wires Aided by Through‐Space Conjugation
Author(s) -
Chen Long,
Wang YaHao,
He Bairong,
Nie Han,
Hu Rongrong,
Huang Fei,
Qin Anjun,
Zhou XiaoShun,
Zhao Zujin,
Tang Ben Zhong
Publication year - 2015
Publication title -
angewandte chemie
Language(s) - English
Resource type - Journals
eISSN - 1521-3757
pISSN - 0044-8249
DOI - 10.1002/ange.201411909
Subject(s) - conductance , break junction , stacking , scanning tunneling microscope , molecule , intramolecular force , nanotechnology , quantum tunnelling , molecular wire , chemical physics , chemistry , materials science , biomolecule , molecular electronics , optoelectronics , condensed matter physics , stereochemistry , physics , organic chemistry
Deciphering charge transport through multichannel pathways in single‐molecule junctions is of high importance to construct nanoscale electronic devices and deepen insight into biological redox processes. Herein, we report two tailor‐made folded single‐molecule wires featuring intramolecular π–π stacking interactions. The scanning tunneling microscope (STM) based break‐junction technique and theoretical calculations show that through‐bond and through‐space conjugations are integrated into one single‐molecule wire, allowing for two simultaneous conducting channels in a single‐molecule junction. These folded molecules with stable π–π stacking interaction offer conceptual advances in single‐molecule multichannel conductance, and are perfect models for conductance studies in biological systems, organic thin films, and π‐stacked columnar aggregates.