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Cometto FP, Arisnabarreta N, Vanta R, Jacquelín DK, Vyas V, Lotsch BV, Paredes-Olivera PA, Patrito EM, Lingenfelder M. Rational Design of 2D Supramolecular Networks Switchable by External Electric Fields. ACS Nano 2024; 18:4287-4296. [PMID: 38259041 PMCID: PMC10851663 DOI: 10.1021/acsnano.3c09775] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/08/2023] [Revised: 01/13/2024] [Accepted: 01/17/2024] [Indexed: 01/24/2024]
Abstract
The reversible formation of hydrogen bonds is a ubiquitous mechanism for controlling molecular assembly in biological systems. However, achieving predictable reversibility in artificial two-dimensional (2D) materials remains a significant challenge. Here, we use an external electric field (EEF) at the solid/liquid interface to trigger the switching of H-bond-linked 2D networks using a scanning tunneling microscope. Assisted by density functional theory and molecular dynamics simulations, we systematically vary the molecule-to-molecule interactions, i.e., the hydrogen-bonding strength, as well as the molecule-to-substrate interactions to analyze the EEF switching effect. By tuning the building block's hydrogen-bonding ability (carboxylic acids vs aldehydes) and substrate nature and charge (graphite, graphene/Cu, graphene/SiO2), we induce or freeze the switching properties and control the final polymorphic output in the 2D network. Our results indicate that the switching ability is not inherent to any particular building block but instead relies on a synergistic combination of the relative adsorbate/adsorbate and absorbate/substrate energetic contributions under surface polarization. Furthermore, we describe the dynamics of the switching mechanism based on the rotation of carboxylic groups and proton exchange, which generate the polarizable species that are influenced by the EEF. This work provides insights into the design and control of reversible molecular assembly in 2D materials, with potential applications in a wide range of fields, including sensors and electronics.
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Affiliation(s)
- Fernando P. Cometto
- Max
Planck-EPFL Laboratory for Molecular Nanoscience and IPHYS, EPFL, Lausanne, CH 1015, Switzerland
- Instituto
de Investigaciones en Fisicoquímica de Córdoba (INFIQC),
CONICET, Ciudad Universitaria, Córdoba X5000HUA, Argentina
- Departamento
de Fisicoquímica, Facultad de Ciencias Químicas, Universidad Nacional de Córdoba (UNC), Ciudad Universitaria, Córdoba X5000HUA, Argentina
| | - Nicolás Arisnabarreta
- Max
Planck-EPFL Laboratory for Molecular Nanoscience and IPHYS, EPFL, Lausanne, CH 1015, Switzerland
- Instituto
de Investigaciones en Fisicoquímica de Córdoba (INFIQC),
CONICET, Ciudad Universitaria, Córdoba X5000HUA, Argentina
- Departamento
de Fisicoquímica, Facultad de Ciencias Químicas, Universidad Nacional de Córdoba (UNC), Ciudad Universitaria, Córdoba X5000HUA, Argentina
| | - Radovan Vanta
- Max
Planck-EPFL Laboratory for Molecular Nanoscience and IPHYS, EPFL, Lausanne, CH 1015, Switzerland
| | - Daniela K. Jacquelín
- Instituto
de Investigaciones en Fisicoquímica de Córdoba (INFIQC),
CONICET, Ciudad Universitaria, Córdoba X5000HUA, Argentina
| | - Vijay Vyas
- Max
Planck Institute for Solid State Research, Stuttgart D-70569, Germany
| | - Bettina V. Lotsch
- Max
Planck Institute for Solid State Research, Stuttgart D-70569, Germany
- Department
of Chemistry, University of Munich (LMU), Munich 81377, Germany
| | - Patricia A. Paredes-Olivera
- Departamento
de Química Teórica y Computacional, Facultad de Ciencias
Químicas, Universidad Nacional de
Córdoba (UNC), Ciudad Universitaria, Córdoba X5000HUA, Argentina
| | - E. Martín Patrito
- Instituto
de Investigaciones en Fisicoquímica de Córdoba (INFIQC),
CONICET, Ciudad Universitaria, Córdoba X5000HUA, Argentina
- Departamento
de Fisicoquímica, Facultad de Ciencias Químicas, Universidad Nacional de Córdoba (UNC), Ciudad Universitaria, Córdoba X5000HUA, Argentina
| | - Magalí Lingenfelder
- Max
Planck-EPFL Laboratory for Molecular Nanoscience and IPHYS, EPFL, Lausanne, CH 1015, Switzerland
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2
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Obermann S, Zheng W, Melidonie J, Böckmann S, Osella S, Arisnabarreta N, Guerrero-León LA, Hennersdorf F, Beljonne D, Weigand JJ, Bonn M, De Feyter S, Hansen MR, Wang HI, Ma J, Feng X. Curved graphene nanoribbons derived from tetrahydropyrene-based polyphenylenes via one-pot K-region oxidation and Scholl cyclization. Chem Sci 2023; 14:8607-8614. [PMID: 37592977 PMCID: PMC10430550 DOI: 10.1039/d3sc02824k] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/02/2023] [Accepted: 06/19/2023] [Indexed: 08/19/2023] Open
Abstract
Precise synthesis of graphene nanoribbons (GNRs) is of great interest to chemists and materials scientists because of their unique opto-electronic properties and potential applications in carbon-based nanoelectronics and spintronics. In addition to the tunable edge structure and width, introducing curvature in GNRs is a powerful structural feature for their chemi-physical property modification. Here, we report an efficient solution synthesis of the first pyrene-based GNR (PyGNR) with curved geometry via one-pot K-region oxidation and Scholl cyclization of its corresponding well-soluble tetrahydropyrene-based polyphenylene precursor. The efficient A2B2-type Suzuki polymerization and subsequent Scholl reaction furnishes up to ∼35 nm long curved GNRs bearing cove- and armchair-edges. The construction of model compound 1, as a cutout of PyGNR, from a tetrahydropyrene-based oligophenylene precursor proves the concept and efficiency of the one-pot K-region oxidation and Scholl cyclization, which is clearly revealed by single crystal X-ray diffraction analysis. The structure and optical properties of PyGNR are investigated by Raman, FT-IR, solid-state NMR, STM and UV-Vis analysis with the support of DFT calculations. PyGNR exhibits a narrow optical bandgap of ∼1.4 eV derived from a Tauc plot, qualifying as a low-bandgap GNR. Moreover, THz spectroscopy on PyGNR estimates its macroscopic charge mobility μ as ∼3.6 cm2 V-1 s-1, outperforming several other curved GNRs reported via conventional Scholl reaction.
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Affiliation(s)
- Sebastian Obermann
- Center for Advancing Electronics Dresden (cfaed), Faculty of Chemistry and Food Chemistry, Technische Universität Dresden D-01069 Dresden Germany
| | - Wenhao Zheng
- Max-Planck-Institute for Polymer Research D-55128 Mainz Germany
| | - Jason Melidonie
- Center for Advancing Electronics Dresden (cfaed), Faculty of Chemistry and Food Chemistry, Technische Universität Dresden D-01069 Dresden Germany
| | - Steffen Böckmann
- Institute of Physical Chemistry, Westfählische Wilhelms-Universität (WWU) Münster D-48149 Münster Germany
| | - Silvio Osella
- Chemical and Biological Systems Simulation Lab, Centre of New Technologies University of Warsaw Banacha 2C Warsaw 02-097 Poland
| | - Nicolás Arisnabarreta
- Department of Chemistry, Division of Molecular Imaging and Photonics, KU Leuven Celestijnenlaan 200F 3001 Leuven Belgium
| | - L Andrés Guerrero-León
- Center for Advancing Electronics Dresden (cfaed), Faculty of Chemistry and Food Chemistry, Technische Universität Dresden D-01069 Dresden Germany
| | - Felix Hennersdorf
- Chair of Inorganic Molecular Chemistry, Technische Universität Dresden Dresden Germany
| | - David Beljonne
- Laboratory for Chemistry of Novel Materials, Materials Research Institute, University of Mons Mons 7000 Belgium
| | - Jan J Weigand
- Chair of Inorganic Molecular Chemistry, Technische Universität Dresden Dresden Germany
| | - Mischa Bonn
- Max-Planck-Institute for Polymer Research D-55128 Mainz Germany
| | - Steven De Feyter
- Department of Chemistry, Division of Molecular Imaging and Photonics, KU Leuven Celestijnenlaan 200F 3001 Leuven Belgium
| | - Michael Ryan Hansen
- Institute of Physical Chemistry, Westfählische Wilhelms-Universität (WWU) Münster D-48149 Münster Germany
| | - Hai I Wang
- Max-Planck-Institute for Polymer Research D-55128 Mainz Germany
| | - Ji Ma
- Center for Advancing Electronics Dresden (cfaed), Faculty of Chemistry and Food Chemistry, Technische Universität Dresden D-01069 Dresden Germany
- Max Planck Institute of Microstructure Physics Weinberg 2 06120 Halle Germany
| | - Xinliang Feng
- Center for Advancing Electronics Dresden (cfaed), Faculty of Chemistry and Food Chemistry, Technische Universität Dresden D-01069 Dresden Germany
- Max Planck Institute of Microstructure Physics Weinberg 2 06120 Halle Germany
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3
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Ribeiro C, Valente G, Espinosa M, Silva RAL, Belo D, Gil-Guerrero S, Arisnabarreta N, Mali KS, De Feyter S, Melle-Franco M, Souto M. Direct C-H Arylation of Dithiophene-Tetrathiafulvalene: Tuneable Electronic Properties and 2D Self-Assembled Molecular Networks at the Solid/Liquid Interface. Chemistry 2023:e202301588. [PMID: 37259897 DOI: 10.1002/chem.202301588] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/02/2023]
Abstract
Invited for the cover of this issue is the group of Manuel Souto and co-workers at the University of Aveiro and CICECO-Aveiro Institute of Materials. The image depicts the direct C-H arylation of dithiophene-tetrathiafulvalene (DT-TTF) and the self-assembly of DT-TTF-tetrabenzoic acid studied by using scanning tunnelling microscopy. Read the full text of the article at 10.1002/chem.202300572.
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Affiliation(s)
- Catarina Ribeiro
- Department of Chemistry, CICECO-Aveiro Institute of Materials, University of Aveiro, Campus de Santiago, Aveiro, 3810-393, Portugal
| | - Gonçalo Valente
- Department of Chemistry, CICECO-Aveiro Institute of Materials, University of Aveiro, Campus de Santiago, Aveiro, 3810-393, Portugal
| | - Miguel Espinosa
- Department of Chemistry, CICECO-Aveiro Institute of Materials, University of Aveiro, Campus de Santiago, Aveiro, 3810-393, Portugal
| | - Rafaela A L Silva
- Centro de Ciências e Tecnologias Nucleares, Instituto Superior Técnico, Universidade de Lisboa, Portugal, E.N. 10, 2695-066, Bobadela LRS, Portugal
| | - Dulce Belo
- Centro de Ciências e Tecnologias Nucleares, Instituto Superior Técnico, Universidade de Lisboa, Portugal, E.N. 10, 2695-066, Bobadela LRS, Portugal
| | - Sara Gil-Guerrero
- Department of Chemistry, CICECO-Aveiro Institute of Materials, University of Aveiro, Campus de Santiago, Aveiro, 3810-393, Portugal
| | - Nicolás Arisnabarreta
- Department of Chemistry, Division of Molecular Imaging and Photonics, KU Leuven, Celestijnenlaan 200F, 3001, Leuven, Belgium
| | - Kunal S Mali
- Department of Chemistry, Division of Molecular Imaging and Photonics, KU Leuven, Celestijnenlaan 200F, 3001, Leuven, Belgium
| | - Steven De Feyter
- Department of Chemistry, Division of Molecular Imaging and Photonics, KU Leuven, Celestijnenlaan 200F, 3001, Leuven, Belgium
| | - Manuel Melle-Franco
- Department of Chemistry, CICECO-Aveiro Institute of Materials, University of Aveiro, Campus de Santiago, Aveiro, 3810-393, Portugal
| | - Manuel Souto
- Department of Chemistry, CICECO-Aveiro Institute of Materials, University of Aveiro, Campus de Santiago, Aveiro, 3810-393, Portugal
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4
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Ribeiro C, Valente G, Espinosa M, Silva RAL, Belo D, Gil-Guerrero S, Arisnabarreta N, Mali KS, De Feyter S, Melle-Franco M, Souto M. Direct C-H Arylation of Dithiophene-Tetrathiafulvalene: Tuneable Electronic Properties and 2D Self-Assembled Molecular Networks at the Solid/Liquid Interface. Chemistry 2023:e202300572. [PMID: 37021746 DOI: 10.1002/chem.202300572] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/20/2023] [Revised: 04/05/2023] [Accepted: 04/06/2023] [Indexed: 04/07/2023]
Abstract
Tetrathiafulvalene is among the most well-known building blocks in molecular electronics due to its outstanding electron-donating and redox properties. Among its derivatives, dithiophene-tetrathiafulvalene (DT-TTF) has attracted considerable interest in organic electronics, owing to its high field-effect mobility. Herein, we report the direct C-H arylation of DT-TTF to synthesise mono- and tetraarylated derivatives functionalised with electron-withdrawing and electron-donating groups in order to evaluate their influence on the electronic properties by cyclic voltammetry, UV-vis spectroscopy and theoretical calculations. Self-assembly of the DT-TTF-tetrabenzoic acid derivative was studied using scanning tunnelling microscopy (STM) which revealed the formation of ordered, densely packed 2D hydrogen-bonded networks at the graphite/liquid interface. The tetrabenzoic acid derivative can attain a planar geometry on the graphite surface due to van der Waals interactions with the surface and H-bonding with neighbouring molecules. This study demonstrates a simple method for the synthesis of arylated DT-TTF derivatives for the construction of novel p-extended electroactive frameworks.
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Affiliation(s)
- Catarina Ribeiro
- University of Aveiro: Universidade de Aveiro, Department of Chemistry, PORTUGAL
| | - Gonçalo Valente
- University of Aveiro: Universidade de Aveiro, Department of Chemistry, PORTUGAL
| | - Miguel Espinosa
- University of Aveiro: Universidade de Aveiro, Department of Chemistry, PORTUGAL
| | - Rafaela A L Silva
- Universidade de Lisboa Instituto Superior Técnico: Universidade de Lisboa Instituto Superior Tecnico, Centro de Ciências e Tecnologias Nucleares, PORTUGAL
| | - Dulce Belo
- Universidade de Lisboa Instituto Superior Técnico: Universidade de Lisboa Instituto Superior Tecnico, Centro de Ciências e Tecnologias Nucleares, PORTUGAL
| | | | | | - Kunal S Mali
- KU Leuven: Katholieke Universiteit Leuven, Department of Chemistry, BELGIUM
| | - Steven De Feyter
- KU Leuven: Katholieke Universiteit Leuven, Department of Chemistry, BELGIUM
| | | | - Manuel Souto
- University of Aveiro: Universidade de Aveiro, Department of Chemistry, Campus de Santiago, 3800-365, Aveiro, PORTUGAL
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5
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Wang X, Ma J, Zheng W, Osella S, Arisnabarreta N, Droste J, Serra G, Ivasenko O, Lucotti A, Beljonne D, Bonn M, Liu X, Hansen MR, Tommasini M, De Feyter S, Liu J, Wang HI, Feng X. Cove-Edged Graphene Nanoribbons with Incorporation of Periodic Zigzag-Edge Segments. J Am Chem Soc 2021; 144:228-235. [PMID: 34962807 DOI: 10.1021/jacs.1c09000] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
Structurally precision graphene nanoribbons (GNRs) are promising candidates for next-generation nanoelectronics due to their intriguing and tunable electronic structures. GNRs with hybrid edge structures often confer them unique geometries associated with exotic physicochemical properties. Herein, a novel type of cove-edged GNRs with periodic short zigzag-edge segments is demonstrated. The bandgap of this GNR family can be tuned using an interplay between the length of the zigzag segments and the distance of two adjacent cove units along the opposite edges, which can be converted from semiconducting to nearly metallic. A family member with periodic cove-zigzag edges based on N = 6 zigzag-edged GNR, namely 6-CZGNR-(2,1), is successfully synthesized in solution through the Scholl reaction of a unique snakelike polymer precursor (10) that is achieved by the Yamamoto coupling of a structurally flexible S-shaped phenanthrene-based monomer (1). The efficiency of cyclodehydrogenation of polymer 10 toward 6-CZGNR-(2,1) is validated by FT-IR, Raman, and UV-vis spectroscopies, as well as by the study of two representative model compounds (2 and 3). Remarkably, the resultant 6-CZGNR-(2,1) exhibits an extended and broad absorption in the near-infrared region with a record narrow optical bandgap of 0.99 eV among the reported solution-synthesized GNRs. Moreover, 6-CZGNR-(2,1) exhibits a high macroscopic carrier mobility of ∼20 cm2 V-1 s-1 determined by terahertz spectroscopy, primarily due to the intrinsically small effective mass (m*e = m*h = 0.17 m0), rendering this GNR a promising candidate for nanoelectronics.
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Affiliation(s)
- Xu Wang
- College of Polymer Science and Engineering, State Key Laboratory of Polymer Material and Engineering, Sichuan University, 610065 Chengdu, P.R. China.,Centre for Advancing Electronics Dresden (cfaed) and Faculty of Chemistry and Food Chemistry, Technische Universität Dresden, 01062 Dresden, Germany
| | - Ji Ma
- Centre for Advancing Electronics Dresden (cfaed) and Faculty of Chemistry and Food Chemistry, Technische Universität Dresden, 01062 Dresden, Germany
| | - Wenhao Zheng
- Max Planck Institute for Polymer Research, Ackermannweg 10, 55128 Mainz, Germany
| | - Silvio Osella
- Chemical and Biological Systems Simulation Lab, Centre of New Technologies, University of Warsaw, Banacha 2C, 02-097 Warsaw, Poland
| | - Nicolás Arisnabarreta
- Department of Chemistry, Division of Molecular Imaging and Photonics, KU Leuven, Celestijnenlaan 200F, 3001 Leuven, Belgium
| | - Jörn Droste
- Institute of Physical Chemistry, Westfal̈ische Wilhelms-Universitaẗ Münster, Corrensstraße 28/30, D-48149 Münster, Germany
| | - Gianluca Serra
- Dipartimento di Chimica, Materiali ed Ingegneria Chimica "G. Natta", Politecnico di Milano, Piazza Leonardo da Vinci 32, 20133 Milano, Italy
| | - Oleksandr Ivasenko
- Department of Chemistry, Division of Molecular Imaging and Photonics, KU Leuven, Celestijnenlaan 200F, 3001 Leuven, Belgium
| | - Andrea Lucotti
- Dipartimento di Chimica, Materiali ed Ingegneria Chimica "G. Natta", Politecnico di Milano, Piazza Leonardo da Vinci 32, 20133 Milano, Italy
| | - David Beljonne
- Laboratory for Chemistry of Novel Materials, Université de Mons, Place du Parc, 20, B-7000 Mons, Belgium
| | - Mischa Bonn
- Max Planck Institute for Polymer Research, Ackermannweg 10, 55128 Mainz, Germany
| | - Xiangyang Liu
- College of Polymer Science and Engineering, State Key Laboratory of Polymer Material and Engineering, Sichuan University, 610065 Chengdu, P.R. China
| | - Michael Ryan Hansen
- Institute of Physical Chemistry, Westfal̈ische Wilhelms-Universitaẗ Münster, Corrensstraße 28/30, D-48149 Münster, Germany
| | - Matteo Tommasini
- Dipartimento di Chimica, Materiali ed Ingegneria Chimica "G. Natta", Politecnico di Milano, Piazza Leonardo da Vinci 32, 20133 Milano, Italy
| | - Steven De Feyter
- Department of Chemistry, Division of Molecular Imaging and Photonics, KU Leuven, Celestijnenlaan 200F, 3001 Leuven, Belgium
| | - Junzhi Liu
- Department of Chemistry and State Key Laboratory of Synthetic Chemistry, The University of Hong Kong, Pokfulam Road, Hong Kong, China
| | - Hai I Wang
- Max Planck Institute for Polymer Research, Ackermannweg 10, 55128 Mainz, Germany
| | - Xinliang Feng
- Centre for Advancing Electronics Dresden (cfaed) and Faculty of Chemistry and Food Chemistry, Technische Universität Dresden, 01062 Dresden, Germany.,Max Planck Institute of Microstructure Physics, Weinberg 2, Halle 06120 Germany
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6
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Arisnabarreta N, Ruano GD, Lingenfelder M, Patrito EM, Cometto FP. Comparative Study of the Adsorption of Thiols and Selenols on Au(111) and Au(100). Langmuir 2017; 33:13733-13739. [PMID: 29110489 DOI: 10.1021/acs.langmuir.7b03038] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
Abstract
The effect of the Au crystalline plane on the adsorption of different thiols and selenols is studied via reductive desorption (RD) and X-ray photoelectron spectroscopy (XPS) measurements. Self-assembled monolayers (SAMs) using aliphatic (ATs) and aromatic thiols (ArTs) on both Au(111) and Au(100) were prepared. The electrochemical stability of these SAMs on both surfaces is evaluated by comparing the position of the RD peaks. The longer the AT chain the more stable the SAM on Au(100) when compared to Au(111). By means of XPS measurements, we determine that the binding energy (BE) of the S 2p signal corresponding to the S atoms at the thiol/Au interface, commonly assigned at 162.0 eV, shifts 0.2 eV from Au(111) to Au(100) for SAMs prepared using thiols with the C* (C atom bonded to S) in sp3 hybridization, such as ATs. However, when the thiol presents the C* with an sp2 hybridization, such as in the case of ArTs, the BE remains at 162.0 eV regardless of the surface plane. Selenol-based SAMs were characterized comparatively on both Au(100) and Au(111). Our results show that selenol SAMs become even more electrochemically stable on Au(100) with respect to Au(111) than the analogue sulfur-based SAM. According to our results, we suggest that the electronic distribution around the Au-S/Se bond could be responsible for the different structural arrangements reported in the literature (gold adatoms, etc.), which should be dependent on the crystalline face (Au(hkl)-S) and the chemical nature of the environment of the adsorbates (sp3-C* vs sp2-C* and Au-SR vs Au-SeR).
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Affiliation(s)
- Nicolás Arisnabarreta
- Departamento de Fisicoquímica, Instituto de Investigaciones en Fisicoquímica de Córdoba (INFIQC), Facultad de Ciencias Químicas, Universidad Nacional de Córdoba , X5000 Córdoba, Argentina
| | - Gustavo D Ruano
- Instituto de Física del Litoral (IFIS) , S3000 Santa Fe, Argentina
| | - Magalí Lingenfelder
- Max Planck-EPFL Laboratory for Molecular Nanoscience, EPFL , CH-1015 Lausanne, Switzerland
| | - E Martín Patrito
- Departamento de Fisicoquímica, Instituto de Investigaciones en Fisicoquímica de Córdoba (INFIQC), Facultad de Ciencias Químicas, Universidad Nacional de Córdoba , X5000 Córdoba, Argentina
| | - Fernando P Cometto
- Departamento de Fisicoquímica, Instituto de Investigaciones en Fisicoquímica de Córdoba (INFIQC), Facultad de Ciencias Químicas, Universidad Nacional de Córdoba , X5000 Córdoba, Argentina
- Max Planck-EPFL Laboratory for Molecular Nanoscience, EPFL , CH-1015 Lausanne, Switzerland
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7
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Cometto F, Frank K, Stel B, Arisnabarreta N, Kern K, Lingenfelder M. The STM bias voltage-dependent polymorphism of a binary supramolecular network. Chem Commun (Camb) 2017; 53:11430-11432. [DOI: 10.1039/c7cc06597c] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
Abstract
We control complex multicomponent switches by tuning the local electric field at the liquid/solid interface.
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Affiliation(s)
- F. Cometto
- Max Planck-EPFL Laboratory for Molecular Nanoscience, and Institut de Physique
- École Polytechnique Fédérale de Lausanne
- CH 1015 Lausanne
- Switzerland
- Departamento de Fisicoquímica
| | - K. Frank
- Max Planck-EPFL Laboratory for Molecular Nanoscience, and Institut de Physique
- École Polytechnique Fédérale de Lausanne
- CH 1015 Lausanne
- Switzerland
| | - B. Stel
- Max Planck-EPFL Laboratory for Molecular Nanoscience, and Institut de Physique
- École Polytechnique Fédérale de Lausanne
- CH 1015 Lausanne
- Switzerland
| | - N. Arisnabarreta
- Departamento de Fisicoquímica
- Instituto de Investigaciones en Fisicoquímica de Córdoba (INFIQC)
- Facultad de Ciencias Químicas
- Universidad Nacional de Córdoba
- Córdoba
| | - K. Kern
- Max Planck-EPFL Laboratory for Molecular Nanoscience, and Institut de Physique
- École Polytechnique Fédérale de Lausanne
- CH 1015 Lausanne
- Switzerland
- Max-Planck-Institut für Festkörperforschung
| | - M. Lingenfelder
- Max Planck-EPFL Laboratory for Molecular Nanoscience, and Institut de Physique
- École Polytechnique Fédérale de Lausanne
- CH 1015 Lausanne
- Switzerland
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8
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Jacquelín DK, Pérez MA, Euti EM, Arisnabarreta N, Cometto FP, Paredes-Olivera P, Patrito EM. A pH-Sensitive Supramolecular Switch Based on Mixed Carboxylic Acid Terminated Self-Assembled Monolayers on Au(111). Langmuir 2016; 32:947-953. [PMID: 26799556 DOI: 10.1021/acs.langmuir.5b03807] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
We show that homogeneously mixed self-assembled monolayers (SAMs) of mercaptoalkanoic acids of different chain lengths can be used to build up a pH-sensitive supramolecular switch. The acids with short and long alkyl chains interact via the strong hydrogen bond between carboxylic acid groups. The pH acts as a trigger by breaking or restoring the hydrogen bond interaction in basic or acidic solutions, respectively. The corresponding changes in the monolayer structure were determined by ellipsometry, surface-enhanced Raman spectroscopy, and contact angle measurements. Density functional theory (DFT) calculations were performed to elucidate the structures of interacting molecules compatible with the surface coverage obtained from electrochemical reductive desorption experiments. The simplicity of the preparation procedure assures a high reproducibility whereas the stability of the homogeneous mixed SAM guarantees the reversibility of the switching process.
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Affiliation(s)
- Daniela K Jacquelín
- Instituto de Investigaciones en Físico Química de Córdoba (INFIQC) CONICET-UNC, Departamento de Fisicoquímica, and ‡Departamento de Matemática y Física, Facultad de Ciencias Químicas, Universidad Nacional de Córdoba , Ciudad Universitaria, X5000HUA Córdoba, Argentina
| | - Manuel A Pérez
- Instituto de Investigaciones en Físico Química de Córdoba (INFIQC) CONICET-UNC, Departamento de Fisicoquímica, and ‡Departamento de Matemática y Física, Facultad de Ciencias Químicas, Universidad Nacional de Córdoba , Ciudad Universitaria, X5000HUA Córdoba, Argentina
| | - Esteban M Euti
- Instituto de Investigaciones en Físico Química de Córdoba (INFIQC) CONICET-UNC, Departamento de Fisicoquímica, and ‡Departamento de Matemática y Física, Facultad de Ciencias Químicas, Universidad Nacional de Córdoba , Ciudad Universitaria, X5000HUA Córdoba, Argentina
| | - Nicolás Arisnabarreta
- Instituto de Investigaciones en Físico Química de Córdoba (INFIQC) CONICET-UNC, Departamento de Fisicoquímica, and ‡Departamento de Matemática y Física, Facultad de Ciencias Químicas, Universidad Nacional de Córdoba , Ciudad Universitaria, X5000HUA Córdoba, Argentina
| | - Fernando P Cometto
- Instituto de Investigaciones en Físico Química de Córdoba (INFIQC) CONICET-UNC, Departamento de Fisicoquímica, and ‡Departamento de Matemática y Física, Facultad de Ciencias Químicas, Universidad Nacional de Córdoba , Ciudad Universitaria, X5000HUA Córdoba, Argentina
| | - Patricia Paredes-Olivera
- Instituto de Investigaciones en Físico Química de Córdoba (INFIQC) CONICET-UNC, Departamento de Fisicoquímica, and ‡Departamento de Matemática y Física, Facultad de Ciencias Químicas, Universidad Nacional de Córdoba , Ciudad Universitaria, X5000HUA Córdoba, Argentina
| | - E Martín Patrito
- Instituto de Investigaciones en Físico Química de Córdoba (INFIQC) CONICET-UNC, Departamento de Fisicoquímica, and ‡Departamento de Matemática y Física, Facultad de Ciencias Químicas, Universidad Nacional de Córdoba , Ciudad Universitaria, X5000HUA Córdoba, Argentina
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