Investigating molecular junctions based on mixed self-assembled monolayers to understand the impact of intermolecular interactions on transport

• Verfasst von: Feng, Jiajun [VerfasserIn]
• Verfasst von: Bâldea, Ioan [VerfasserIn]
• Verfasst von: Gao, Jiajie [VerfasserIn]
• Verfasst von: Jeong, Gookyeong [VerfasserIn]
• Verfasst von: Frisbie, C. Daniel [VerfasserIn]
• Verfasst von: Xie, Zuoti [VerfasserIn]
• Titel: Investigating molecular junctions based on mixed self-assembled monolayers to understand the impact of intermolecular interactions on transport
• Verf.angabe: Jiajun Feng, Ioan Bâldea, Jiajie Gao, Gookyeong Jeong, C. Daniel Frisbie, and Zuoti Xie
• Jahr: 2024
• Umfang: 7 S.
• Illustrationen: Illustrationen, Diagramme
• Fussnoten: Online veröffentlicht: 6. November 2024 ; Gesehen am 23.07.2025
• Titel Quelle: Enthalten in: American Chemical SocietyACS nano
• Ort Quelle: Washington, DC : Soc., 2007
• Jahr Quelle: 2024
• Band/Heft Quelle: 18(2024), 46, Seite 32016-32022
• ISSN Quelle: 1936-086X
• DOI: doi:10.1021/acsnano.4c09956
• Datenträger: Online-Ressource
• Sprache: eng
• K10plus-PPN: 1931625239

Abstract

To interrogate the importance of intermolecular interactions on charge transport at the nanoscale, we investigate molecular tunnel junctions based on mixed self-assembled monolayers (SAMs) of 1-alkyl (CnT) thiols and their fluorinated counterparts (F-CnT) that have substantially different tunneling conductances. Experiments on mixed CnT1-x:F-CnTx SAMs between Au contacts reveal a strongly nonlinear (exponential) dependence of the tunneling conductance G on composition x, a behavior that is tempting to assign to the strong impact of intra-SAM intermolecular interactions. However, analysis suggests that the exponential dependence of G on x does not arise from intra-SAM intermolecular interactions, but instead emerges from the work function modification of the Au electrode which varies linearly with x.