1
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Zhang F, Li J, Liu P, Li H, Chen S, Li Z, Zan WY, Guo J, Zhang XM. Ultra-high loading single CoN3 sites in N-doped graphene-like carbon for efficient transfer hydrogenation of nitroaromatics. J Catal 2021. [DOI: 10.1016/j.jcat.2021.05.025] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
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2
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Zhang S, Cheng L, Chen C, Li J, Li X, Zhang M, Cheng F, Xiao X, Deng K, Zeng Q. Controlled Construction of an Exquisite Three-Component Co-assembly Supramolecular Structure at the Liquid-Solid Interface. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2021; 37:2153-2160. [PMID: 33527825 DOI: 10.1021/acs.langmuir.0c03387] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
A three-component supramolecular co-assembly structure formed at the liquid-solid interface by employing a shape-persistent π-conjugated macrocycle (16mer) and two guest molecules (COR and C60) is demonstrated. Scanning tunneling microscopy (STM) observations revealed that 16mer can serve as a versatile host molecule that can co-assemble with both COR and C60 guest molecules to form stable two-component structures, where the COR guest molecule filled in the gap between the side chains of adjacent 16mer molecules, and the C60 guest molecule entered the inner cavity of 16mer. It was found that the adding sequence of COR and C60 guest molecules is crucial to the resulting co-adsorption structure in the three-component system. To obtain the intriguing 16mer-COR-C60 three-component co-assembly structure, the 16mer and COR two-component co-assembly structure should first be constructed on a HOPG surface, followed by addition of C60. Based on the analysis of the STM results and the density functional theory (DFT) calculations, the formation mechanism of the assembled structures was revealed.
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Affiliation(s)
- Siqi Zhang
- CAS Key Laboratory of Standardization and Measurement for Nanotechnology, CAS Center for Excellence in Nanoscience, National Center for Nanoscience and Technology (NCNST), Beijing 100190, P. R. China
| | - Linxiu Cheng
- CAS Key Laboratory of Standardization and Measurement for Nanotechnology, CAS Center for Excellence in Nanoscience, National Center for Nanoscience and Technology (NCNST), Beijing 100190, P. R. China
| | - Chen Chen
- CAS Key Laboratory of Standardization and Measurement for Nanotechnology, CAS Center for Excellence in Nanoscience, National Center for Nanoscience and Technology (NCNST), Beijing 100190, P. R. China
| | - Jianqiao Li
- CAS Key Laboratory of Standardization and Measurement for Nanotechnology, CAS Center for Excellence in Nanoscience, National Center for Nanoscience and Technology (NCNST), Beijing 100190, P. R. China
| | - Xiaokang Li
- CAS Key Laboratory of Standardization and Measurement for Nanotechnology, CAS Center for Excellence in Nanoscience, National Center for Nanoscience and Technology (NCNST), Beijing 100190, P. R. China
| | - Min Zhang
- Guangdong Engineering and Technology Research Center for Advanced Nanomaterials, School of Environment and Civil Engineering, Dongguan University of Technology, Dongguan 523808, P. R. China
| | - Faliang Cheng
- Guangdong Engineering and Technology Research Center for Advanced Nanomaterials, School of Environment and Civil Engineering, Dongguan University of Technology, Dongguan 523808, P. R. China
| | - Xunwen Xiao
- School of Materials and Chemical Engineering, Ningbo University of Technology, Ningbo 315211, P. R. China
| | - Ke Deng
- CAS Key Laboratory of Standardization and Measurement for Nanotechnology, CAS Center for Excellence in Nanoscience, National Center for Nanoscience and Technology (NCNST), Beijing 100190, P. R. China
| | - Qingdao Zeng
- CAS Key Laboratory of Standardization and Measurement for Nanotechnology, CAS Center for Excellence in Nanoscience, National Center for Nanoscience and Technology (NCNST), Beijing 100190, P. R. China
- Center of Materials Science and Optoelectonics Engineering, University of Chinese Academy of Sciences, Beijing 100049, P. R. China
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3
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Reynaerts R, Mali KS, De Feyter S. Growth of a self-assembled monolayer decoupled from the substrate: nucleation on-command using buffer layers. BEILSTEIN JOURNAL OF NANOTECHNOLOGY 2020; 11:1291-1302. [PMID: 32953373 PMCID: PMC7476593 DOI: 10.3762/bjnano.11.113] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 05/13/2020] [Accepted: 08/12/2020] [Indexed: 06/11/2023]
Abstract
Structural polymorphism is ubiquitous in physisorbed self-assembled monolayers formed at the solution-solid interface. One of the ways to influence network formation at this interface is to physically decouple the self-assembled monolayer from the underlying substrate thereby removing the influence of the substrate lattice, if any. Here we show a systematic exploration of self-assembly of a typical building block, namely 4-tetradecyloxybenzoic acid at the 1-phenyloctane-graphite interface in the presence and in the absence of a buffer layer formed by a long chain alkane, namely n-pentacontane. Using scanning tunneling microscopy (STM), three different structural polymorphs were identified for 4-tetradecyloxybenzoic acid at the 1-phenyloctane-graphite interface. Surprisingly, the same three structures were formed on top of the buffer layer, albeit at different concentrations. Systematic variation of experimental parameters did not lead to any new network in the presence of the buffer layer. We discovered that the self-assembly on top of the buffer layer allows better control over the nanoscale manipulation of the self-assembled networks. Using the influence of the STM tip, we could initiate the nucleation of small isolated domains of the benzoic acid on-command in a reproducible fashion. Such controlled nucleation experiments hold promise for studying fundamental processes inherent to the assembly process on surfaces.
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Affiliation(s)
- Robby Reynaerts
- Department of Chemistry, Division of Molecular Imaging and Photonics, KU Leuven, Celestijnenlaan 200F, B-3001 Leuven, Belgium
| | - Kunal S Mali
- Department of Chemistry, Division of Molecular Imaging and Photonics, KU Leuven, Celestijnenlaan 200F, B-3001 Leuven, Belgium
| | - Steven De Feyter
- Department of Chemistry, Division of Molecular Imaging and Photonics, KU Leuven, Celestijnenlaan 200F, B-3001 Leuven, Belgium
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4
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Interfacial Energetic Level Mapping and Nano-Ordering of Small Molecule/Fullerene Organic Solar Cells by Scanning Tunneling Microscopy and Spectroscopy. NANOMATERIALS 2020; 10:nano10030427. [PMID: 32121230 PMCID: PMC7152849 DOI: 10.3390/nano10030427] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/07/2020] [Revised: 02/20/2020] [Accepted: 02/22/2020] [Indexed: 12/27/2022]
Abstract
Using scanning tunneling microscopy (STM) and spectroscopy (STS) at the liquid/solid interface, morphology evolution process and energetic level alignment of very thin solid films (thickness: <700 pm), of the low molecular weight molecule DRCN5T and DRCN5T:[70]PCBM blend are analyzed after applying thermal annealing at different temperatures. These films exhibit a worm-like pattern without thermal annealing (amorphous shape); however, after applying thermal annealing at 120 °C, the small molecule film domains crystallize verified by X-ray diffraction: structural geometry becomes a well-defined organized array. By using STS, the energy band diagrams of the semiconductor bulk heterojunction (blended film) at the donor-acceptor interface are determined; morphology and energy characteristics can be correlated with the organic solar cells (OSC) performance. When combining thermal treatment and solvent vapor annealing processes as described in previous literature by using other techniques, OSC devices based on DRCN5T show a very acceptable power conversion efficiency of 9.0%.
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5
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Duan S, Rinkevicius Z, Tian G, Luo Y. Optomagnetic Effect Induced by Magnetized Nanocavity Plasmon. J Am Chem Soc 2019; 141:13795-13798. [DOI: 10.1021/jacs.9b07817] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Sai Duan
- Hefei National Laboratory for Physical Sciences at the Microscale, Synergetic Innovation Center of Quantum Information & Quantum Physics, University of Science and Technology of China, Hefei, 230026 Anhui, People’s Republic of China
- Department of Theoretical Chemistry and Biology, School of Engineering Sciences in Chemistry, Biotechnology and Health, KTH Royal Institute of Technology, S-106 91 Stockholm, Sweden
| | - Zilvinas Rinkevicius
- Department of Theoretical Chemistry and Biology, School of Engineering Sciences in Chemistry, Biotechnology and Health, KTH Royal Institute of Technology, S-106 91 Stockholm, Sweden
- Swedish e-Science
Research Centre, KTH Royal Institute of Technology, S-100 44 Stockholm, Sweden
- Department of Physics, Kaunas University of Technology, Kaunas LT-51368, Lithuania
| | - Guangjun Tian
- Key Laboratory
for Microstructural Material Physics of Hebei Province, School of Science, Yanshan University, Qinhuangdao 066004, People’s Republic of China
| | - Yi Luo
- Hefei National Laboratory for Physical Sciences at the Microscale, Synergetic Innovation Center of Quantum Information & Quantum Physics, University of Science and Technology of China, Hefei, 230026 Anhui, People’s Republic of China
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6
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Houghtaling J, Ying C, Eggenberger OM, Fennouri A, Nandivada S, Acharjee M, Li J, Hall AR, Mayer M. Estimation of Shape, Volume, and Dipole Moment of Individual Proteins Freely Transiting a Synthetic Nanopore. ACS NANO 2019; 13:5231-5242. [PMID: 30995394 DOI: 10.1021/acsnano.8b09555] [Citation(s) in RCA: 81] [Impact Index Per Article: 16.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/18/2023]
Abstract
This paper demonstrates that high-bandwidth current recordings in combination with low-noise silicon nitride nanopores make it possible to determine the molecular volume, approximate shape, and dipole moment of single native proteins in solution without the need for labeling, tethering, or other chemical modifications of these proteins. The analysis is based on current modulations caused by the translation and rotation of single proteins through a uniform electric field inside of a nanopore. We applied this technique to nine proteins and show that the measured protein parameters agree well with reference values but only if the nanopore walls were coated with a nonstick fluid lipid bilayer. One potential challenge with this approach is that an untethered protein is able to diffuse laterally while transiting a nanopore, which generates increasingly asymmetric disruptions in the electric field as it approaches the nanopore walls. These "off-axis" effects add an additional noise-like element to the electrical recordings, which can be exacerbated by nonspecific interactions with pore walls that are not coated by a fluid lipid bilayer. We performed finite element simulations to quantify the influence of these effects on subsequent analyses. Examining the size, approximate shape, and dipole moment of unperturbed, native proteins in aqueous solution on a single-molecule level in real time while they translocate through a nanopore may enable applications such as identifying or characterizing proteins in a mixture, or monitoring the assembly or disassembly of transient protein complexes based on their shape, volume, or dipole moment.
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Affiliation(s)
- Jared Houghtaling
- Department of Biomedical Engineering , University of Michigan , Ann Arbor , Michigan 48109 , United States
- Adolphe Merkle Insitute, University of Fribourg , CH-1700 Fribourg , Switzerland
| | - Cuifeng Ying
- Adolphe Merkle Insitute, University of Fribourg , CH-1700 Fribourg , Switzerland
| | - Olivia M Eggenberger
- Adolphe Merkle Insitute, University of Fribourg , CH-1700 Fribourg , Switzerland
| | - Aziz Fennouri
- Adolphe Merkle Insitute, University of Fribourg , CH-1700 Fribourg , Switzerland
| | - Santoshi Nandivada
- Department of Physics , University of Arkansas , Fayetteville , Arkansas 72701 , United States
| | - Mitu Acharjee
- Department of Physics , University of Arkansas , Fayetteville , Arkansas 72701 , United States
| | - Jiali Li
- Department of Physics , University of Arkansas , Fayetteville , Arkansas 72701 , United States
| | - Adam R Hall
- Wake Forest University School of Medicine , Winston Salem , North Carolina 27157 , United States
| | - Michael Mayer
- Adolphe Merkle Insitute, University of Fribourg , CH-1700 Fribourg , Switzerland
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7
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Urieta-Mora J, García-Benito I, Molina-Ontoria A, Martín N. Hole transporting materials for perovskite solar cells: a chemical approach. Chem Soc Rev 2018; 47:8541-8571. [PMID: 30283961 DOI: 10.1039/c8cs00262b] [Citation(s) in RCA: 147] [Impact Index Per Article: 24.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
Photovoltaic solar cells based on perovskites have come to the forefront in science by achieving exceptional power conversion efficiencies (PCEs) in less than a decade of research. This "still young" generation of solar cells is currently rivalling, in PCEs, well-established technologies, such as cadmium telluride (CdTe) and silicon. Further improvements in device stability by means of innovative materials are yet to come, with technology becoming closer to meeting the market requirements. Emerging from this groundbreaking discovery, a great number of charge transporting materials have flourished, which is particularly true for hole transporting materials (HTMs). The huge number of molecules prepared stem from design and engineering of a wide variety of new and also chemically modified old molecules where organic synthesis has played a fundamental role. In this review, the contribution of chemistry through those synthetic protocols used for producing new and innovative HTMs from relatively simple organic molecules is presented in a rational and systematic manner. The variety and impact of synthetic strategies followed, the structure-property relationship and stability, conductivity and device performance are highlighted from a chemical viewpoint.
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Affiliation(s)
- Javier Urieta-Mora
- Departamento Química Orgánica, Facultad C. C. Químicas, Universidad Complutense de Madrid, Av. Complutense s/n, 28040 Madrid, Spain.
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8
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Subcellular Imaging of Liquid Silicone Coated-Intestinal Epithelial Cells. Sci Rep 2018; 8:10763. [PMID: 30018393 PMCID: PMC6050225 DOI: 10.1038/s41598-018-28912-x] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2018] [Accepted: 07/03/2018] [Indexed: 12/27/2022] Open
Abstract
Surface contamination and the formation of water bridge at the nanoscopic contact between an atomic force microscope tip and cell surface limits the maximum achievable spatial resolution on cells under ambient conditions. Structural information from fixed intestinal epithelial cell membrane is enhanced by fabricating a silicone liquid membrane that prevents ambient contaminants and accumulation of water at the interface between the cell membrane and the tip of an atomic force microscope. The clean and stable experimental platform permits the visualisation of the structure and orientation of microvilli present at the apical cell membrane under standard laboratory conditions together with registering subcellular details within a microvillus. The method developed here can be implemented for preserving and imaging contaminant-free morphology of fixed cells which is central for both fundamental studies in cell biology and in the emerging field of digital pathology.
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9
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Verveniotis E, Okawa Y, Makarova MV, Koide Y, Liu J, Šmíd B, Watanabe K, Taniguchi T, Komatsu K, Minari T, Liu X, Joachim C, Aono M. Self-assembling diacetylene molecules on atomically flat insulators. Phys Chem Chem Phys 2018; 18:31600-31605. [PMID: 27834980 DOI: 10.1039/c6cp06749b] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Single crystal sapphire and diamond surfaces are used as planar, atomically flat insulating surfaces, for the deposition of the diacetylene compound 10,12-nonacosadiynoic acid. The surface assembly is compared with results on hexagonal boron nitride (h-BN), highly oriented pyrolytic graphite (HOPG) and MoS2 surfaces. A perfectly flat-lying monolayer of 10,12-nonacosadiynoic acid self-assembles on h-BN like on HOPG and MoS2. On sapphire and oxidized diamond surfaces, we observed assemblies of standing-up molecular layers. Surface assembly is driven by surface electrostatic dipoles. Surface polarity is partially controlled using a hydrogenated diamond surface or totally screened by the deposition of a graphene layer on the sapphire surface. This results in a perfectly flat and organized SAM on graphene, which is ready for on-surface polymerization of long and isolated molecular wires under ambient conditions.
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Affiliation(s)
- Elisseos Verveniotis
- International Center for Materials Nanoarchitectonics (WPI-MANA), National Institute for Materials Science (NIMS), 1-1 Namiki, Tsukuba, Ibaraki 305-0044, Japan.
| | - Yuji Okawa
- International Center for Materials Nanoarchitectonics (WPI-MANA), National Institute for Materials Science (NIMS), 1-1 Namiki, Tsukuba, Ibaraki 305-0044, Japan.
| | - Marina V Makarova
- International Center for Materials Nanoarchitectonics (WPI-MANA), National Institute for Materials Science (NIMS), 1-1 Namiki, Tsukuba, Ibaraki 305-0044, Japan. and Institute of Physics, Czech Academy of Sciences, Na Slovance, 2, Prague 8, 18221, Czech Republic
| | - Yasuo Koide
- National Institute for Materials Science (NIMS), 1-1 Namiki, Tsukuba, Ibaraki 305-0044, Japan
| | - Jiangwei Liu
- National Institute for Materials Science (NIMS), 1-1 Namiki, Tsukuba, Ibaraki 305-0044, Japan
| | - Břetislav Šmíd
- National Institute for Materials Science (NIMS), 1-1 Namiki, Tsukuba, Ibaraki 305-0044, Japan and International Institute for Carbon-Neutral Energy Research (WPI-I2CNER), Kyushu University, Nishi-ku, Fukuoka 819-0395, Japan
| | - Kenji Watanabe
- National Institute for Materials Science (NIMS), 1-1 Namiki, Tsukuba, Ibaraki 305-0044, Japan
| | - Takashi Taniguchi
- National Institute for Materials Science (NIMS), 1-1 Namiki, Tsukuba, Ibaraki 305-0044, Japan
| | - Katsuyoshi Komatsu
- International Center for Materials Nanoarchitectonics (WPI-MANA), National Institute for Materials Science (NIMS), 1-1 Namiki, Tsukuba, Ibaraki 305-0044, Japan.
| | - Takeo Minari
- International Center for Materials Nanoarchitectonics (WPI-MANA), National Institute for Materials Science (NIMS), 1-1 Namiki, Tsukuba, Ibaraki 305-0044, Japan.
| | - Xuying Liu
- International Center for Materials Nanoarchitectonics (WPI-MANA), National Institute for Materials Science (NIMS), 1-1 Namiki, Tsukuba, Ibaraki 305-0044, Japan.
| | - Christian Joachim
- International Center for Materials Nanoarchitectonics (WPI-MANA), National Institute for Materials Science (NIMS), 1-1 Namiki, Tsukuba, Ibaraki 305-0044, Japan. and Centre d'Elaboration de Matériaux et d'Études Structurales (CEMES), Centre National de la Recherche Scientifique (CNRS), 29 rue J. Marvig, 31055 Toulouse Cedex, France
| | - Masakazu Aono
- International Center for Materials Nanoarchitectonics (WPI-MANA), National Institute for Materials Science (NIMS), 1-1 Namiki, Tsukuba, Ibaraki 305-0044, Japan.
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10
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Templated bilayer self-assembly of fully conjugated π-expanded macrocyclic oligothiophenes complexed with fullerenes. Nat Commun 2017; 8:14717. [PMID: 28281557 PMCID: PMC5353715 DOI: 10.1038/ncomms14717] [Citation(s) in RCA: 52] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2016] [Accepted: 01/24/2017] [Indexed: 11/22/2022] Open
Abstract
Fully conjugated macrocyclic oligothiophenes exhibit a combination of highly attractive structural, optical and electronic properties, and multifunctional molecular thin film architectures thereof are envisioned. However, control over the self-assembly of such systems becomes increasingly challenging, the more complex the target structures are. Here we show a robust self-assembly based on hierarchical non-covalent interactions. A self-assembled monolayer of hydrogen-bonded trimesic acid at the interface between an organic solution and graphite provides host-sites for the epitaxial ordering of Saturn-like complexes of fullerenes with oligothiophene macrocycles in mono- and bilayers. STM tomography verifies the formation of the templated layers. Molecular dynamics simulations corroborate the conformational stability and assign the adsorption sites of the adlayers. Scanning tunnelling spectroscopy determines their rectification characteristics. Current–voltage characteristics reveal the modification of the rectifying properties of the macrocycles by the formation of donor–acceptor complexes in a densely packed all-self-assembled supramolecular nanostructure. Controlling the self-assembly of oligothiophene complexes that are used in multi-functional thin films can be challenging. Here the authors show a hierarchy of non-covalent interactions for robust self-assembly that orders Saturn-like complexes of fullerenes with oligothiophene macrocycles.
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11
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Nirmalraj P, Daly R, Martin N, Thompson D. Motion of Fullerenes around Topological Defects on Metals: Implications for the Progress of Molecular Scale Devices. ACS APPLIED MATERIALS & INTERFACES 2017; 9:7897-7902. [PMID: 28233982 DOI: 10.1021/acsami.7b00408] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
Research on motion of molecules in the presence of thermal noise is central for progress in two-terminal molecular scale electronic devices. However, it is still unclear what influence imperfections in bottom metal electrode surface can have on molecular motion. Here, we report a two-layer crowding study, detailing the early stages of surface motion of fullerene molecules on Au(111) with nanoscale pores in a n-tetradecane chemical environment. The motion of the fullerenes is directed by crowding of the underlying n-tetradecane molecules around the pore fringes at the liquid-solid interface. We observe in real-space the growth of molecular populations around different pore geometries. Supported by atomic-scale modeling, our findings extend the established picture of molecular crowding by revealing that trapped solvent molecules serve as prime nucleation sites at nanopore fringes.
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Affiliation(s)
- Peter Nirmalraj
- IBM Research-Zurich , Säumerstrasse 4, CH- 8803 Rüschlikon, Switzerland
| | - Ronan Daly
- Department of Engineering, University of Cambridge , 17 Charles Babbage Road, Cambridge CB3 0FS, United Kingdom
| | - Nazario Martin
- Departmento de Quimica Organica, Facultad de Quimica, Universidad Complutense de Madrid , E-28040 Madrid, Spain
| | - Damien Thompson
- Department of Physics, Bernal Institute, University of Limerick , Limerick V94 T9PX, Ireland
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12
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Zafra JL, Molina Ontoria A, Mayorga Burrezo P, Peña-Alvarez M, Samoc M, Szeremeta J, Ramírez FJ, Lovander MD, Droske CJ, Pappenfus TM, Echegoyen L, López Navarrete JT, Martín N, Casado J. Fingerprints of Through-Bond and Through-Space Exciton and Charge π-Electron Delocalization in Linearly Extended [2.2]Paracyclophanes. J Am Chem Soc 2017; 139:3095-3105. [DOI: 10.1021/jacs.6b12520] [Citation(s) in RCA: 31] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
Affiliation(s)
- José L. Zafra
- Department
of Physical Chemistry, University of Málaga, Campus de Teatinos s/n, Málaga 29071, Spain
| | - Agustín Molina Ontoria
- IMDEA-Nanociencia,
C/Faraday 9, Ciudad Universitaria de Cantoblanco, 28049 Madrid, Spain
| | - Paula Mayorga Burrezo
- Department
of Physical Chemistry, University of Málaga, Campus de Teatinos s/n, Málaga 29071, Spain
| | | | - Marek Samoc
- Advanced
Materials Engineering and Modelling Group, Faculty of Chemistry, Wroclaw University of Science and Technology, 50370 Wroclaw, Poland
| | - Janusz Szeremeta
- Advanced
Materials Engineering and Modelling Group, Faculty of Chemistry, Wroclaw University of Science and Technology, 50370 Wroclaw, Poland
| | - Francisco J. Ramírez
- Department
of Physical Chemistry, University of Málaga, Campus de Teatinos s/n, Málaga 29071, Spain
| | - Matthew D. Lovander
- Division
of Science and Mathematics, University of Minnesota, Morris, Minnesota 56267, United States
| | - Christopher J. Droske
- Division
of Science and Mathematics, University of Minnesota, Morris, Minnesota 56267, United States
| | - Ted M. Pappenfus
- Division
of Science and Mathematics, University of Minnesota, Morris, Minnesota 56267, United States
| | - Luis Echegoyen
- Department
of Chemistry, University of Texas at El Paso, El Paso, Texas 79968, United States
| | - Juan T. López Navarrete
- Department
of Physical Chemistry, University of Málaga, Campus de Teatinos s/n, Málaga 29071, Spain
| | - Nazario Martín
- IMDEA-Nanociencia,
C/Faraday 9, Ciudad Universitaria de Cantoblanco, 28049 Madrid, Spain
| | - Juan Casado
- Department
of Physical Chemistry, University of Málaga, Campus de Teatinos s/n, Málaga 29071, Spain
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13
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Mali KS, Pearce N, De Feyter S, Champness NR. Frontiers of supramolecular chemistry at solid surfaces. Chem Soc Rev 2017; 46:2520-2542. [DOI: 10.1039/c7cs00113d] [Citation(s) in RCA: 168] [Impact Index Per Article: 24.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
Supramolecular chemistry on solid surfaces represents an exciting field of research that continues to develop in new and unexpected directions.
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Affiliation(s)
- Kunal S. Mali
- Division of Molecular Imaging and Photonics
- Department of Chemistry
- KU Leuven – University of Leuven
- B3001 Leuven
- Belgium
| | | | - Steven De Feyter
- Division of Molecular Imaging and Photonics
- Department of Chemistry
- KU Leuven – University of Leuven
- B3001 Leuven
- Belgium
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14
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Dou J, Sun Z, Opalade AA, Wang N, Fu W, Tao F(F. Operando chemistry of catalyst surfaces during catalysis. Chem Soc Rev 2017; 46:2001-2027. [DOI: 10.1039/c6cs00931j] [Citation(s) in RCA: 105] [Impact Index Per Article: 15.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
The chemistry of a catalyst surface during catalysis is crucial for a fundamental understanding of the mechanisms of a catalytic reaction performed on the catalyst in the gas or liquid phase.
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Affiliation(s)
- Jian Dou
- Department of Chemical and Petroleum Engineering and Department of Chemistry
- University of Kansas
- Lawrence
- USA
| | - Zaicheng Sun
- Department of Chemistry and Chemical Engineering
- Beijing University of Technology
- Beijing
- China
| | - Adedamola A. Opalade
- Department of Chemical and Petroleum Engineering and Department of Chemistry
- University of Kansas
- Lawrence
- USA
| | - Nan Wang
- Department of Chemical and Petroleum Engineering and Department of Chemistry
- University of Kansas
- Lawrence
- USA
| | - Wensheng Fu
- Chongqing Key Laboratory of Green Synthesis and Applications and College of Chemistry
- Chongqing Normal University
- Chongqing
- China
| | - Franklin (Feng) Tao
- Department of Chemical and Petroleum Engineering and Department of Chemistry
- University of Kansas
- Lawrence
- USA
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15
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Yanilmaz A, Tomak A, Akbali B, Bacaksiz C, Ozceri E, Ari O, Senger RT, Selamet Y, Zareie H. Nitrogen doping for facile and effective modification of graphene surfaces. RSC Adv 2017. [DOI: 10.1039/c7ra03046k] [Citation(s) in RCA: 38] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023] Open
Abstract
Nitrogen-doped graphene (N-graphene) was prepared by exposing the graphene transferred to different substrates to atomic nitrogen plasma.
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Affiliation(s)
- A. Yanilmaz
- Department of Materials Science and Engineering
- Izmir Institute of Technology
- Turkey
| | - A. Tomak
- Department of Materials Science and Engineering
- Izmir Institute of Technology
- Turkey
| | - B. Akbali
- Department of Physics
- Izmir Institute of Technology
- Turkey
| | - C. Bacaksiz
- Department of Physics
- Izmir Institute of Technology
- Turkey
| | - E. Ozceri
- Department of Materials Science and Engineering
- Izmir Institute of Technology
- Turkey
- Department of Physics
- Izmir Institute of Technology
| | - O. Ari
- Department of Physics
- Izmir Institute of Technology
- Turkey
| | - R. T. Senger
- Department of Physics
- Izmir Institute of Technology
- Turkey
| | - Y. Selamet
- Department of Physics
- Izmir Institute of Technology
- Turkey
| | - H. M. Zareie
- Microstructural Analysis Unit
- School of Physics and Advanced Materials
- University of Technology
- Sydney
- Australia
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16
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Makarova MV, Okawa Y, Verveniotis E, Watanabe K, Taniguchi T, Joachim C, Aono M. Self-assembled diacetylene molecular wire polymerization on an insulating hexagonal boron nitride (0001) surface. NANOTECHNOLOGY 2016; 27:395303. [PMID: 27573286 DOI: 10.1088/0957-4484/27/39/395303] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
The electrical characterization of single-polymer chains on a surface is an important step towards novel molecular device development. The main challenge is the lack of appropriate atomically flat insulating substrates for fabricating single-polymer chains. Here, using atomic force microscopy, we demonstrate that the (0001) surface of an insulating hexagonal boron nitride (h-BN) substrate leads to a flat-lying self-assembled monolayer of diacetylene compounds. The subsequent heating or ultraviolet irradiation can initiate an on-surface polymerization process leading to the formation of long polydiacetylene chains. The frequency of photo-polymerization occurrence on h-BN(0001) is two orders of magnitude higher than that on graphite(0001). This is explained by the enhanced lifetime of the molecular excited state, because relaxation via the h-BN is suppressed due to a large band gap. We also demonstrate that on-surface polymerization on h-BN(0001) is possible even after the lithography process, which opens up the possibility of further electrical investigations.
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Affiliation(s)
- Marina V Makarova
- International Center for Materials Nanoarchitectonics (WPI-MANA), National Institute for Materials Science (NIMS), 1-1 Namiki, Tsukuba, Ibaraki 305-0044, Japan. Institute of Physics, Czech Academy of Sciences, Na Slovance, 2, Prague 8, 18221, Czech Republic
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17
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A robust molecular probe for Ångstrom-scale analytics in liquids. Nat Commun 2016; 7:12403. [PMID: 27516157 PMCID: PMC4990633 DOI: 10.1038/ncomms12403] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2016] [Accepted: 06/29/2016] [Indexed: 01/01/2023] Open
Abstract
Traditionally, nanomaterial profiling using a single-molecule-terminated scanning probe is performed at the vacuum–solid interface often at a few Kelvin, but is not a notion immediately associated with liquid–solid interface at room temperature. Here, using a scanning tunnelling probe functionalized with a single C60 molecule stabilized in a high-density liquid, we resolve low-dimensional surface defects, atomic interfaces and capture Ångstrom-level bond-length variations in single-layer graphene and MoS2. Atom-by-atom controllable imaging contrast is demonstrated at room temperature and the electronic structure of the C60–metal probe complex within the encompassing liquid molecules is clarified using density functional theory. Our findings demonstrates that operating a robust single-molecular probe is not restricted to ultra-high vacuum and cryogenic settings. Hence the scope of high-precision analytics can be extended towards resolving sub-molecular features of organic elements and gauging ambient compatibility of emerging layered materials with atomic-scale sensitivity under experimentally less stringent conditions. Single-molecule-terminated scanning probes typically operate under ultra-high vacuum conditions at low temperatures. Here, the authors show that tips functionalized with C60 can image single-layer graphene and MoS2 with high definition in a liquid environment at room temperature
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18
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Farnesi Camellone M, Negreiros Ribeiro F, Szabová L, Tateyama Y, Fabris S. Catalytic Proton Dynamics at the Water/Solid Interface of Ceria-Supported Pt Clusters. J Am Chem Soc 2016; 138:11560-7. [DOI: 10.1021/jacs.6b03446] [Citation(s) in RCA: 57] [Impact Index Per Article: 7.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Affiliation(s)
- Matteo Farnesi Camellone
- CNR-IOM
DEMOCRITOS, Istituto Officina dei Materiali, Consiglio Nazionale delle Ricerche, Via Bonomea 265, 34136 Trieste, Italy
| | - Fabio Negreiros Ribeiro
- CNR-IOM
DEMOCRITOS, Istituto Officina dei Materiali, Consiglio Nazionale delle Ricerche, Via Bonomea 265, 34136 Trieste, Italy
| | - Lucie Szabová
- Center
for Green Research on Energy and Environmental Materials (GREEN), National Institute for Materials Science (NIMS), 1-1 Namiki, Tsukuba, Ibaraki 305-0044, Japan
| | - Yoshitaka Tateyama
- Center
for Green Research on Energy and Environmental Materials (GREEN), National Institute for Materials Science (NIMS), 1-1 Namiki, Tsukuba, Ibaraki 305-0044, Japan
| | - Stefano Fabris
- CNR-IOM
DEMOCRITOS, Istituto Officina dei Materiali, Consiglio Nazionale delle Ricerche, Via Bonomea 265, 34136 Trieste, Italy
- SISSA, Scuola Internazionale Superiore di Studi Avanzati, Via Bonomea 265, 34136 Trieste, Italy
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19
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Neumann RF, Engel M, Steiner M. Two dimensional, electronic particle tracking in liquids with a graphene-based magnetic sensor array. NANOSCALE 2016; 8:13652-13658. [PMID: 27366868 DOI: 10.1039/c6nr03434a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
The investigation and control of liquid flow at the nanometer scale is a key area of applied research with high relevance to physics, chemistry, and biology. We introduce a method and a device that allows the spatial resolution of liquid flow by integrating an array of graphene-based magnetic (Hall) sensors that is used for tracking the movement of magnetic nanoparticles immersed in a liquid under investigation. With a novel device concept based on standard integration processes and experimentally verified material parameters, we numerically simulate the performance of a single sensor pixel, as well as the whole sensor array, for tracking magnetic nanoparticles having typical properties. The results demonstrate that the device enables (a) the detection of individual nanoparticles in the liquid with high accuracy and (b) the reconstruction of a particle's flow-driven trajectory across the integrated sensor array with sub-pixel precision as a function of time, in what we call the "Magnetic nanoparticle velocimetry" technique. Since the method does not rely on optical detection, potential lab-on-chip applications include particle tracking and flow analysis in opaque media at the sub-micron scale.
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Affiliation(s)
- Rodrigo F Neumann
- IBM Research, Av. Pasteur 138 & 146, Urca, Rio de Janeiro, 22290-240, Brazil.
| | - Michael Engel
- IBM Research, Yorktown Heights, New York, 10598, USA
| | - Mathias Steiner
- IBM Research, Av. Pasteur 138 & 146, Urca, Rio de Janeiro, 22290-240, Brazil.
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20
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Fingerprinting Electronic Molecular Complexes in Liquid. Sci Rep 2016; 6:19009. [PMID: 26743542 PMCID: PMC4705545 DOI: 10.1038/srep19009] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2015] [Accepted: 12/02/2015] [Indexed: 01/14/2023] Open
Abstract
Predicting the electronic framework of an organic molecule under practical conditions is essential if the molecules are to be wired in a realistic circuit. This demands a clear description of the molecular energy levels and dynamics as it adapts to the feedback from its evolving chemical environment and the surface topology. Here, we address this issue by monitoring in real-time the structural stability and intrinsic molecular resonance states of fullerene (C60)-based hybrid molecules in the presence of the solvent. Energetic levels of C60 hybrids are resolved by in situ scanning tunnelling spectroscopy with an energy resolution in the order of 0.1 eV at room-temperature. An ultra-thin organic spacer layer serves to limit contact metal-molecule energy overlap. The measured molecular conductance gap spread is statistically benchmarked against first principles electronic structure calculations and used to quantify the diversity in electronic species within a standard population of molecules. These findings provide important progress towards understanding conduction mechanisms at a single-molecular level and in serving as useful guidelines for rational design of robust nanoscale devices based on functional organic molecules.
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21
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Nirmalraj PN, Thompson D, Riel HE. Capturing the embryonic stages of self-assembly - design rules for molecular computation. Sci Rep 2015; 5:10116. [PMID: 25960364 PMCID: PMC4650799 DOI: 10.1038/srep10116] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/16/2015] [Accepted: 03/30/2015] [Indexed: 12/12/2022] Open
Abstract
The drive towards organic computing is gaining momentum. Interestingly, the building blocks for such architectures is based on molecular ensembles extending from nucleic acids to synthetic molecules. Advancement in this direction requires devising precise nanoscopic experiments and model calculations to decipher the mechanisms governing the integration of a large number of molecules over time at room-temperature. Here, we report on ultrahigh-resolution scanning tunnelling microscopic measurements to register the motion of molecules in the absence of external stimulus in liquid medium. We observe the collective behavior of individual molecules within a swarm which constantly iterate their position to attain an energetically favourable site. Our approach provides a consistent pathway to register molecular self-assembly in sequential steps from visualising thermodynamically driven repair of defects up until the formation of a stable two-dimensional configuration. These elemental findings on molecular surface dynamics, self-repair and intermolecular kinetic pathways rationalised by atom-scale simulations can be explored for developing new models in algorithmic self-assembly to realisation of evolvable hardware.
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Affiliation(s)
| | - Damien Thompson
- Materials and Surface Science Institute and Department of Physics and Energy, University of Limerick, Ireland
| | - Heike E. Riel
- IBM Research–Zurich, Säumerstrasse 4, CH- 8803, Rüschlikon, Switzerland
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