DataVXACS NanoPaper
journal article·2024-11-19

Investigating Molecular Junctions Based on Mixed Self-Assembled Monolayers to Understand the Impact of Intermolecular Interactions on Transport

Jiajun Feng, Ioan Bâldea, Jiajie Gao, Gookyeong Jeong, C. Daniel Frisbie, Zuoti Xie

ACS Nano· Volume 18· Issue 46
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Source abstract

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 CnT 1– x:F-CnT x 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 .
Source: openalex_inverted_index · Quality: baseline

Research context

Nanomaterials

OpenAlex topics: Molecular Junctions and Nanostructures · Advanced biosensing and bioanalysis techniques · Graphene research and applications

SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.

Affiliations

Department of Materials Science and Engineering, Guangdong Provincial Key Laboratory of Materials and Technologies for Energy Conversion, Guangdong Technion-Israel Institute of Technology, 241 Daxue Road, Shantou, Guangdong 515063, China

Schulich Faculty of Chemistry, Technion-Israel Institute of Technology, Haifa 3200003, Israel

Theoretical Chemistry, Heidelberg University, Im Neuenheimer Feld 229, Heidelberg D-69120, Germany

Department of Chemical Engineering and Materials Science and Department of Chemistry, University of Minnesota, Minneapolis, Minnesota 55455, United States

Quantum Science Center of Guangdong-Hong Kong-Macao Greater Bay Area (Guangdong), Shenzhen-Hong Kong International Science and Technology Park, NO.3 Binglang Road, Futian District, Shenzhen, Guangdong 518000, China

Funding

Division of Chemistry · Guangdong Provincial Department of Science and Technology · National Key Research and Development Program of China · Deutsche Forschungsgemeinschaft · National Natural Science Foundation of China

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