Article (Scientific journals)
Three-State Single-Molecule Naphthalenediimide Switch: Integration of a Pendant Redox Unit for Conductance Tuning
Li, Yonghai; Baghernejad, Masoud; Qusiy, Al-Galiby et al.
2015 • In Angewandte Chemie, 54 (46), p. 13586–13589
Peer reviewed
 

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Keywords :
break junction; electrochemical gating; molecular electronics; naphthalenediimide; single molecule studies
Abstract :
[en] We studied charge transport through core-substituted naphthalenediimide (NDI) single-molecule junctions using the electrochemical STM-based break-junction technique in combination with DFT calculations. Conductance switching among three well-defined states was demonstrated by electrochemically controlling the redox state of the pendent diimide unit of the molecule in an ionic liquid. The electrical conductances of the dianion and neutral states differ by more than one order of magnitude. The potential-dependence of the charge-transport characteristics of the NDI molecules was confirmed by DFT calculations, which account for electrochemical double-layer effects on the conductance of the NDI junctions. This study suggests that integration of a pendant redox unit with strong coupling to a molecular backbone enables the tuning of charge transport through single-molecule devices by controlling their redox states.
Disciplines :
Chemistry
Physics
Author, co-author :
Li, Yonghai ✱
Baghernejad, Masoud ✱
Qusiy, Al-Galiby ✱
Zsolt Manrique, David ✱
Zhang, Guanxin ✱
Hamill, Joseph  ;  Université de Liège - ULiège > Molecular Systems (MolSys)
Fu, Yongchun
Broekmann, Peter
Hong, Wenjing
Wandlowski, Thomas
Zhang, Deqing
Lambert, Colin ✱
✱ These authors have contributed equally to this work.
Language :
English
Title :
Three-State Single-Molecule Naphthalenediimide Switch: Integration of a Pendant Redox Unit for Conductance Tuning
Publication date :
2015
Journal title :
Angewandte Chemie
ISSN :
0170-9046
Publisher :
WILEY-VCH Verlag
Volume :
54
Issue :
46
Pages :
13586–13589
Peer reviewed :
Peer reviewed
European Projects :
FP7 - 606728 - MOLESCO - MOLECULAR-SCALE ELECTRONICS: Concepts, Contacts and Stability "MOLESCO"
Name of the research project :
MOLESCO
Funders :
Marie Skłodowska-Curie Actions
European Union
Funding number :
606728
Available on ORBi :
since 01 April 2026

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