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He S, Jin X, Wang D, Hao D, Li Y, Zhu Z, Tian Y, Jiang L. Interfacial Water-Dictated Oil Adhesion Based on Ion Modulation. J Am Chem Soc 2023; 145:24145-24152. [PMID: 37874995 DOI: 10.1021/jacs.3c07975] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2023]
Abstract
Oil adhesion on ionic surfaces is ubiquitous in organisms and natural environments and is generally determined by surface chemical component and texture. However, when adhesion occurs, water molecules at the solid-liquid interface, acting as a bridge not only influenced by the structure and composition of the solid surface but also interacting with the neighboring oil molecules, play a crucial role but are always overlooked. Herein, we investigate the oil adhesion process on a carboxyl-terminated self-assembled monolayer surface (COOH-SAM) in ionic solutions and observe the interfacial water structure via surface-enhanced Raman scattering (SERS) in this system. It is found that the lower the tetracoordinated water content, the stronger the oil adhesion. Compared to monovalent ions, the strengthened binding of multivalent ions to the COOH-SAM surface makes the interfacial water more disordered, which eventually leads to a stronger oil adhesion. Notably, the amount of oil adhesion decreases with an increase in the thickness of the interfacial water region. The interfacial water-dictated oil adhesion has been demonstrated in capillary to simulate the water-driven oil recovery, providing a molecular-level explanation for enhanced oil recovery from low salinity water flooding and also indicating potential applications in intelligent microfluidic and seawater desalination.
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Affiliation(s)
- Shaofan He
- Key Laboratory of Bioinspired Smart Interfacial Science, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing 100190, China
- School of Future Technology, University of Chinese Academy of Sciences, Beijing 100049, China
| | - Xu Jin
- Research Institute of Petroleum Exploration and Development PetroChina, Beijing 100083, China
| | - Dianyu Wang
- School of Chemical Engineering, Zhengzhou University, Zhengzhou 450001, China
| | - Dezhao Hao
- Key Laboratory of Bioinspired Smart Interfacial Science, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing 100190, China
- School of Future Technology, University of Chinese Academy of Sciences, Beijing 100049, China
| | - Yulong Li
- Key Laboratory of Bioinspired Smart Interfacial Science, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing 100190, China
- School of Future Technology, University of Chinese Academy of Sciences, Beijing 100049, China
| | - Zhongpeng Zhu
- Suzhou Institute for Advanced Research, University of Science and Technology of China, Suzhou, Jiangsu 215123, China
| | - Ye Tian
- Key Laboratory of Bioinspired Smart Interfacial Science, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing 100190, China
- Suzhou Institute for Advanced Research, University of Science and Technology of China, Suzhou, Jiangsu 215123, China
- School of Future Technology, University of Chinese Academy of Sciences, Beijing 100049, China
| | - Lei Jiang
- Key Laboratory of Bioinspired Smart Interfacial Science, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing 100190, China
- School of Future Technology, University of Chinese Academy of Sciences, Beijing 100049, China
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Liu Y, Zojer E, Zharnikov M. Sweep-Character-Dependent Switching of the Conductance State in Ferrocene-Substituted Thiofluorene Self-Assembled Monolayers. ACS APPLIED MATERIALS & INTERFACES 2022; 14:52499-52507. [PMID: 36355841 DOI: 10.1021/acsami.2c15308] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/16/2023]
Abstract
Self-assembled monolayers (SAMs) of ferrocene-substituted thiofluorene on Au(111) exhibit two distinct conductance states (CSs) in two-terminal junctions featuring a sharp tip of eutectic GaIn as the top electrode. The occurrence of these states and the resulting effective rectification by the SAM depend on the way the bias voltage is swept; when the junction is only negatively biased, the original, high CS is preserved, whereas the junction is switched to a low CS when applying only positive biases. This results in an exceptionally high effective rectification ratio (RR) of ∼2100 already at voltages as low as 0.1 V. In contrast, when sweeping the junction alternatingly to the maximum positive and negative bias voltages (as usually performed in the literature), fully symmetric J-V curves are observed. That is, for the present SAM, rectification disappears, and the effective RR is ≈1. It is noteworthy that whether the junction in these symmetric sweeps is in the high or low CS depends on the polarity of the first sweep. We attribute the occurrence of the two CSs to a (quasi) non-reversible oxidation of the ferrocenes in combination with structural changes in the monolayer geometry. The observed sweeping dependence of the conductivity switching is an additional parameter that needs to be considered when interpreting experimental J-V curves, especially when dealing with redox-active systems.
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Affiliation(s)
- Yangbiao Liu
- Angewandte Physikalische Chemie, Universität Heidelberg, Im Neuenheimer Feld 253, D-69120 Heidelberg, Germany
| | - Egbert Zojer
- Institute of Solid State Physics, NAWI Graz, Graz University of Technology, Petersgasse 16, 8010 Graz, Austria
| | - Michael Zharnikov
- Angewandte Physikalische Chemie, Universität Heidelberg, Im Neuenheimer Feld 253, D-69120 Heidelberg, Germany
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Molecular ensemble junctions with inter-molecular quantum interference. Nat Commun 2022; 13:4742. [PMID: 35961982 PMCID: PMC9374774 DOI: 10.1038/s41467-022-32476-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2022] [Accepted: 08/01/2022] [Indexed: 11/08/2022] Open
Abstract
We report of a high yield method to form nanopore molecular ensembles junctions containing ~40,000 molecules, in which the semimetal bismuth (Bi) is a top contact. Conductance histograms of these junctions are double-peaked (bi-modal), a behavior that is typical for single molecule junctions but not expected for junctions with thousands of molecules. This unique observation is shown to result from a new form of quantum interference that is inter-molecular in nature, which occurs in these junctions since the very long coherence length of the electrons in Bi enables them to probe large ensembles of molecules while tunneling through the junctions. Under such conditions, each molecule within the ensembles becomes an interference path that modifies via its tunneling phase the electronic structure of the entire junction. This new form of quantum interference holds a great promise for robust novel conductance effects in practical molecular junctions. Quantum interference effect in the conductance of single molecule junctions has been attracting intensive interest in recent years. Here, Li and Selzer show the presence of intermolecular quantum interference over 40,000 molecules in a molecular ensemble junction with bismuth as the top electrode.
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Du C, Wang Z, Chen J, Martin A, Raturi D, Thuo M. Role of Nanoscale Roughness and Polarity in Odd-Even Effect of Self-Assembled Monolayers. Angew Chem Int Ed Engl 2022; 61:e202205251. [PMID: 35580255 PMCID: PMC9400998 DOI: 10.1002/anie.202205251] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/10/2022] [Indexed: 11/13/2022]
Abstract
The dependency of substrate roughness on wetting properties of self-assembled monolayers (SAMs) has been studied extensively, but most previous studies used limited selection of probing liquid and range of surface roughness. These studies disregarded the limit to observation of sub-nanometer odd-even parity effect, hence are inconclusive. In this work we report the role of solvent polarity on the roughness-dependency of wetting behavior of SAMs by studying static con-tact angle of a variety of probing liquids, with different polarities, on SAMs formed on Ag-based substrate with different surface morphology. By overlapping the roughness ranges with previous studies on Au, the limitation of surface roughness (RMS=1 nm) to observation of the odd-even effect using water as probing liquid was confirmed, but other probing liquid yielded different roughness-dependent behaviors, with more polar solvent showing more roughness-dependent behavior. Based on these observations, we concluded that there exists a phase-transition like behavior in SAMs due to substrate roughness and molecule chain length, but whose determination is dependent on the probing liquid.
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Affiliation(s)
- Chuanshen Du
- Department of Materials Science and EngineeringIowa State University2220 Hoover HallAmesIA 50011USA
| | - Zhengjia Wang
- Department of Materials Science and EngineeringIowa State University2220 Hoover HallAmesIA 50011USA
| | - Jiahao Chen
- Department of Materials Science and EngineeringIowa State University2220 Hoover HallAmesIA 50011USA
- Micro-electronic research centerIowa State University133 Applied Sciences Complex, 1925 Scholl RoadAmesIA 50011USA
| | - Andrew Martin
- Department of Materials Science and EngineeringIowa State University2220 Hoover HallAmesIA 50011USA
| | - Dhruv Raturi
- Department of Materials Science and EngineeringIowa State University2220 Hoover HallAmesIA 50011USA
| | - Martin Thuo
- Department of Materials Science and EngineeringIowa State University2220 Hoover HallAmesIA 50011USA
- Micro-electronic research centerIowa State University133 Applied Sciences Complex, 1925 Scholl RoadAmesIA 50011USA
- Biopolymer and Biocomposites Research TeamCenter for Bioplastics and BiocompositesIowa State University1041 Food Sciences BuildingAmesIA 50011USA
- Department of Electrical EngineeringIowa State University2215 Coover HallAmesIA 50011USA
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Du C, Wang Z, Chen J, Martin A, Raturi D, Thuo M. Role of Nanoscale Roughness and Polarity in Odd–Even Effect of Self‐Assembled Monolayers. Angew Chem Int Ed Engl 2022. [DOI: 10.1002/ange.202205251] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Chuanshen Du
- Department of Materials Science and Engineering Iowa State University 2220 Hoover Hall Ames IA 50011 USA
| | - Zhengjia Wang
- Department of Materials Science and Engineering Iowa State University 2220 Hoover Hall Ames IA 50011 USA
| | - Jiahao Chen
- Department of Materials Science and Engineering Iowa State University 2220 Hoover Hall Ames IA 50011 USA
- Micro-electronic research center Iowa State University 133 Applied Sciences Complex, 1925 Scholl Road Ames IA 50011 USA
| | - Andrew Martin
- Department of Materials Science and Engineering Iowa State University 2220 Hoover Hall Ames IA 50011 USA
| | - Dhruv Raturi
- Department of Materials Science and Engineering Iowa State University 2220 Hoover Hall Ames IA 50011 USA
| | - Martin Thuo
- Department of Materials Science and Engineering Iowa State University 2220 Hoover Hall Ames IA 50011 USA
- Micro-electronic research center Iowa State University 133 Applied Sciences Complex, 1925 Scholl Road Ames IA 50011 USA
- Biopolymer and Biocomposites Research Team Center for Bioplastics and Biocomposites Iowa State University 1041 Food Sciences Building Ames IA 50011 USA
- Department of Electrical Engineering Iowa State University 2215 Coover Hall Ames IA 50011 USA
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Park J, Kodaimati MS, Belding L, Root SE, Schatz GC, Whitesides GM. Controlled Hysteresis of Conductance in Molecular Tunneling Junctions. ACS NANO 2022; 16:4206-4216. [PMID: 35230085 DOI: 10.1021/acsnano.1c10155] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
The problem this paper addresses is the origin of the hysteretic behavior in two-terminal molecular junctions made from an EGaIn electrode and self-assembled monolayers of alkanethiolates terminated in chelates (transition metal dichlorides complexed with 2,2'-bipyridine; BIPY-MCl2). The hysteresis of conductance displayed by these BIPY-MCl2 junctions changes in magnitude depending on the identity of the metal ion (M) and the window of the applied voltage across the junction. The hysteretic behavior of conductance in these junctions appears only in an incoherent (Fowler-Nordheim) tunneling regime. When the complexed metal ion is Mn(II), Fe(II), Co(II), or Ni(II), both incoherent tunneling and hysteresis are observed for a voltage range between +1.0 V and -1.0 V. When the metal ion is Cr(II) or Cu(II), however, only resonant (one-step) tunneling is observed, and the junctions exhibit no hysteresis and do not enter the incoherent tunneling regime. Using this correlation, the conductance characteristics of BIPY-MCl2 junctions can be controlled. This voltage-induced change of conductance demonstrates a simple, fast, and reversible way (i.e., by changing the applied voltage) to modulate conductance in molecular tunneling junctions.
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Affiliation(s)
- Junwoo Park
- Department of Chemistry and Chemical Biology, Harvard University, 12 Oxford Street, Cambridge, Massachusetts 02138, United States
- Department of Chemistry, Sogang University, Mapo-gu, Seoul 04107, Republic of Korea
| | - Mohamad S Kodaimati
- Department of Chemistry and Chemical Biology, Harvard University, 12 Oxford Street, Cambridge, Massachusetts 02138, United States
| | - Lee Belding
- Department of Chemistry and Chemical Biology, Harvard University, 12 Oxford Street, Cambridge, Massachusetts 02138, United States
| | - Samuel E Root
- Department of Chemistry and Chemical Biology, Harvard University, 12 Oxford Street, Cambridge, Massachusetts 02138, United States
| | - George C Schatz
- Department of Chemistry, Northwestern University, 2145 Sheridan Road, Evanston, Illinois 60208-3113, United States
| | - George M Whitesides
- Department of Chemistry and Chemical Biology, Harvard University, 12 Oxford Street, Cambridge, Massachusetts 02138, United States
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Xin N, Hu C, Al Sabea H, Zhang M, Zhou C, Meng L, Jia C, Gong Y, Li Y, Ke G, He X, Selvanathan P, Norel L, Ratner MA, Liu Z, Xiao S, Rigaut S, Guo H, Guo X. Tunable Symmetry-Breaking-Induced Dual Functions in Stable and Photoswitched Single-Molecule Junctions. J Am Chem Soc 2021; 143:20811-20817. [PMID: 34846141 DOI: 10.1021/jacs.1c08997] [Citation(s) in RCA: 20] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
The aim of molecular electronics is to miniaturize active electronic devices and ultimately construct single-molecule nanocircuits using molecules with diverse structures featuring various functions, which is extremely challenging. Here, we realize a gate-controlled rectifying function (the on/off ratio reaches ∼60) and a high-performance field effect (maximum on/off ratio >100) simultaneously in an initially symmetric single-molecule photoswitch comprising a dinuclear ruthenium-diarylethene (Ru-DAE) complex sandwiched covalently between graphene electrodes. Both experimental and theoretical results consistently demonstrate that the initially degenerated frontier molecular orbitals localized at each Ru fragment in the open-ring Ru-DAE molecule can be tuned separately and shift asymmetrically under gate electric fields. This symmetric orbital shifting (AOS) lifts the degeneracy and breaks the molecular symmetry, which is not only essential to achieve a diode-like behavior with tunable rectification ratio and controlled polarity, but also enhances the field-effect on/off ratio at the rectification direction. In addition, this gate-controlled symmetry-breaking effect can be switched on/off by isomerizing the DAE unit between its open-ring and closed-ring forms with light stimulus. This new scheme offers a general and efficient strategy to build high-performance multifunctional molecular nanocircuits.
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Affiliation(s)
- Na Xin
- State Key Laboratory for Structural Chemistry of Unstable and Stable Species, Beijing National Laboratory for Molecular Sciences, National Biomedical Imaging Center, College of Chemistry and Molecular Engineering, Peking University, Beijing 100871, P. R. China
| | - Chen Hu
- Center for the Physics of Materials and Department of Physics, McGill University, Montreal, Quebec H3A 2T8, Canada
| | - Hassan Al Sabea
- Univ Rennes, CNRS, ISCR (Institut des Sciences Chimiques de Rennes)-UMR 6226, Rennes F-35000, France
| | - Miao Zhang
- The Education Ministry Key Laboratory of Resource Chemistry, Shanghai Key Laboratory of Rare Earth Functional Materials, College of Chemistry and Materials Science, Shanghai Normal University, Shanghai 200234, P. R. China
| | - Chenguang Zhou
- State Key Laboratory for Structural Chemistry of Unstable and Stable Species, Beijing National Laboratory for Molecular Sciences, National Biomedical Imaging Center, College of Chemistry and Molecular Engineering, Peking University, Beijing 100871, P. R. China
| | - Linan Meng
- Institute of Physics, Chinese Academy of Sciences, Beijing 100190, P. R. China
| | - Chuancheng Jia
- Center of Single-Molecule Sciences, Frontiers Science Center for New Organic Matter, Institute of Modern Optics, College of Electronic Information and Optical Engineering, Nankai University, 38 Tongyan Road, Jinnan District, Tianjin 300350, P. R. China
| | - Yao Gong
- State Key Laboratory for Structural Chemistry of Unstable and Stable Species, Beijing National Laboratory for Molecular Sciences, National Biomedical Imaging Center, College of Chemistry and Molecular Engineering, Peking University, Beijing 100871, P. R. China
| | - Yu Li
- State Key Laboratory for Structural Chemistry of Unstable and Stable Species, Beijing National Laboratory for Molecular Sciences, National Biomedical Imaging Center, College of Chemistry and Molecular Engineering, Peking University, Beijing 100871, P. R. China
| | - Guojun Ke
- State Key Laboratory for Structural Chemistry of Unstable and Stable Species, Beijing National Laboratory for Molecular Sciences, National Biomedical Imaging Center, College of Chemistry and Molecular Engineering, Peking University, Beijing 100871, P. R. China
| | - Xiaoyan He
- Univ Rennes, CNRS, ISCR (Institut des Sciences Chimiques de Rennes)-UMR 6226, Rennes F-35000, France
| | - Pramila Selvanathan
- Univ Rennes, CNRS, ISCR (Institut des Sciences Chimiques de Rennes)-UMR 6226, Rennes F-35000, France
| | - Lucie Norel
- Univ Rennes, CNRS, ISCR (Institut des Sciences Chimiques de Rennes)-UMR 6226, Rennes F-35000, France
| | - Mark A Ratner
- Department of Chemistry, Northwestern University, Evanston, Illinois 60208, United States
| | - Zhirong Liu
- State Key Laboratory for Structural Chemistry of Unstable and Stable Species, Beijing National Laboratory for Molecular Sciences, National Biomedical Imaging Center, College of Chemistry and Molecular Engineering, Peking University, Beijing 100871, P. R. China
| | - Shengxiong Xiao
- The Education Ministry Key Laboratory of Resource Chemistry, Shanghai Key Laboratory of Rare Earth Functional Materials, College of Chemistry and Materials Science, Shanghai Normal University, Shanghai 200234, P. R. China
| | - Stéphane Rigaut
- Univ Rennes, CNRS, ISCR (Institut des Sciences Chimiques de Rennes)-UMR 6226, Rennes F-35000, France
| | - Hong Guo
- Center for the Physics of Materials and Department of Physics, McGill University, Montreal, Quebec H3A 2T8, Canada
| | - Xuefeng Guo
- State Key Laboratory for Structural Chemistry of Unstable and Stable Species, Beijing National Laboratory for Molecular Sciences, National Biomedical Imaging Center, College of Chemistry and Molecular Engineering, Peking University, Beijing 100871, P. R. China.,Center of Single-Molecule Sciences, Frontiers Science Center for New Organic Matter, Institute of Modern Optics, College of Electronic Information and Optical Engineering, Nankai University, 38 Tongyan Road, Jinnan District, Tianjin 300350, P. R. China
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