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Turning the Tap: Conformational Control of Quantum Interference to Modulate Single-Molecule Conductance.
Jiang, Feng; Trupp, Douglas I; Algethami, Norah; Zheng, Haining; He, Wenxiang; Alqorashi, Afaf; Zhu, Chenxu; Tang, Chun; Li, Ruihao; Liu, Junyang; Sadeghi, Hatef; Shi, Jia; Davidson, Ross; Korb, Marcus; Sobolev, Alexandre N; Naher, Masnun; Sangtarash, Sara; Low, Paul J; Hong, Wenjing; Lambert, Colin J.
Afiliação
  • Jiang F; State Key Laboratory of Physical Chemistry of Solid Surfaces, College of Chemistry and Chemical Engineering, iChEM, Xiamen University, Xiamen, 361005, China.
  • Trupp DI; School of Molecular Sciences, University of Western Australia, 35 Stirling Highway, Crawley, Western Australia, 6009, Australia.
  • Algethami N; Department of Physics, Lancaster University, Lancaster, LA1 4YB, UK.
  • Zheng H; State Key Laboratory of Physical Chemistry of Solid Surfaces, College of Chemistry and Chemical Engineering, iChEM, Xiamen University, Xiamen, 361005, China.
  • He W; State Key Laboratory of Physical Chemistry of Solid Surfaces, College of Chemistry and Chemical Engineering, iChEM, Xiamen University, Xiamen, 361005, China.
  • Alqorashi A; Department of Physics, Lancaster University, Lancaster, LA1 4YB, UK.
  • Zhu C; State Key Laboratory of Physical Chemistry of Solid Surfaces, College of Chemistry and Chemical Engineering, iChEM, Xiamen University, Xiamen, 361005, China.
  • Tang C; State Key Laboratory of Physical Chemistry of Solid Surfaces, College of Chemistry and Chemical Engineering, iChEM, Xiamen University, Xiamen, 361005, China.
  • Li R; State Key Laboratory of Physical Chemistry of Solid Surfaces, College of Chemistry and Chemical Engineering, iChEM, Xiamen University, Xiamen, 361005, China.
  • Liu J; State Key Laboratory of Physical Chemistry of Solid Surfaces, College of Chemistry and Chemical Engineering, iChEM, Xiamen University, Xiamen, 361005, China.
  • Sadeghi H; Department of Physics, Lancaster University, Lancaster, LA1 4YB, UK.
  • Shi J; Present address: School of Engineering, University of Warwick, Coventry, CV4 7AL, UK.
  • Davidson R; State Key Laboratory of Physical Chemistry of Solid Surfaces, College of Chemistry and Chemical Engineering, iChEM, Xiamen University, Xiamen, 361005, China.
  • Korb M; Department of Chemistry, Durham University, Durham, DH1 3LE, UK.
  • Sobolev AN; School of Molecular Sciences, University of Western Australia, 35 Stirling Highway, Crawley, Western Australia, 6009, Australia.
  • Naher M; School of Molecular Sciences, University of Western Australia, 35 Stirling Highway, Crawley, Western Australia, 6009, Australia.
  • Sangtarash S; School of Molecular Sciences, University of Western Australia, 35 Stirling Highway, Crawley, Western Australia, 6009, Australia.
  • Low PJ; Department of Physics, Lancaster University, Lancaster, LA1 4YB, UK.
  • Hong W; Present address: School of Engineering, University of Warwick, Coventry, CV4 7AL, UK.
  • Lambert CJ; School of Molecular Sciences, University of Western Australia, 35 Stirling Highway, Crawley, Western Australia, 6009, Australia.
Angew Chem Int Ed Engl ; 58(52): 18987-18993, 2019 Dec 19.
Article em En | MEDLINE | ID: mdl-31617293
ABSTRACT
Together with the more intuitive and commonly recognized conductance mechanisms of charge-hopping and tunneling, quantum-interference (QI) phenomena have been identified as important factors affecting charge transport through molecules. Consequently, establishing simple and flexible molecular-design strategies to understand, control, and exploit QI in molecular junctions poses an exciting challenge. Here we demonstrate that destructive quantum interference (DQI) in meta-substituted phenylene ethylene-type oligomers (m-OPE) can be tuned by changing the position and conformation of methoxy (OMe) substituents at the central phenylene ring. These substituents play the role of molecular-scale taps, which can be switched on or off to control the current flow through a molecule. Our experimental results conclusively verify recently postulated magic-ratio and orbital-product rules, and highlight a novel chemical design strategy for tuning and gating DQI features to create single-molecule devices with desirable electronic functions.
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Texto completo: 1 Coleções: 01-internacional Base de dados: MEDLINE Tipo de estudo: Prognostic_studies Idioma: En Revista: Angew Chem Int Ed Engl Ano de publicação: 2019 Tipo de documento: Article País de afiliação: China
Texto completo
Adicionar na Minha BVS
Imprimir
XML
PubMed Links
Buscar no Google

Texto completo: 1 Coleções: 01-internacional Base de dados: MEDLINE Tipo de estudo: Prognostic_studies Idioma: En Revista: Angew Chem Int Ed Engl Ano de publicação: 2019 Tipo de documento: Article País de afiliação: China