1
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Wenzel S, Boden D, van Lent R, Motaee E, Prabhu MK, Achour H, Groot IMN. Spectroscopic investigation of a Co(0001) model catalyst during exposure to H 2 and CO at near-ambient pressures. Phys Chem Chem Phys 2023; 25:25094-25104. [PMID: 37498615 PMCID: PMC10528786 DOI: 10.1039/d3cp02739b] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/12/2023] [Accepted: 07/13/2023] [Indexed: 07/28/2023]
Abstract
Cobalt catalysts, although already used industrially for Fischer-Tropsch synthesis, are prone to a number of deactivation mechanisms such as oxidation of the active phase, and the deposition of carbon and reaction products. We have performed near-ambient-pressure X-ray photoelectron spectroscopy on Co(0001) model catalysts during exposure to gases relevant to Fischer-Tropsch synthesis, i.e., CO and H2, at 0.25 mbar total pressure. At this pressure, CO seems to be more efficient at keeping the Co(0001) surface metallic than H2, which is the opposite behavior as reported in the literature for other pressure ranges. We offer an interpretation of these differences based on the preferred adsorption and dissociation sites of CO and H2 compared to the oxidizing agent water (present as impurity in the gas feed and one of the products of the reaction). Additionally, detailed carbon spectra measured at the HIPPIE beamline of MAX IV allow for the distinction of different adsorbed species: CO and COx species are present in correlation to the presence of oxygen on the surface. Carbidic carbon and graphitic carbon can both be removed by hydrogen, whereas adsorbed hydrocarbons possibly poison the surface.
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Affiliation(s)
- Sabine Wenzel
- Leiden Institute of Chemistry, Einsteinweg 55, 2333 CC Leiden, The Netherlands.
| | - Dajo Boden
- Leiden Institute of Chemistry, Einsteinweg 55, 2333 CC Leiden, The Netherlands.
| | - Richard van Lent
- Leiden Institute of Chemistry, Einsteinweg 55, 2333 CC Leiden, The Netherlands.
| | - Elahe Motaee
- Leiden Institute of Chemistry, Einsteinweg 55, 2333 CC Leiden, The Netherlands.
| | - Mahesh K Prabhu
- Leiden Institute of Chemistry, Einsteinweg 55, 2333 CC Leiden, The Netherlands.
| | - Hamed Achour
- Leiden Institute of Chemistry, Einsteinweg 55, 2333 CC Leiden, The Netherlands.
| | - Irene M N Groot
- Leiden Institute of Chemistry, Einsteinweg 55, 2333 CC Leiden, The Netherlands.
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2
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Liu S, Norikane Y, Kikkawa Y. Two-dimensional molecular networks at the solid/liquid interface and the role of alkyl chains in their building blocks. BEILSTEIN JOURNAL OF NANOTECHNOLOGY 2023; 14:872-892. [PMID: 37674543 PMCID: PMC10477993 DOI: 10.3762/bjnano.14.72] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/24/2023] [Accepted: 07/25/2023] [Indexed: 09/08/2023]
Abstract
Nanoarchitectonics has attracted increasing attention owing to its potential applications in nanomachines, nanoelectronics, catalysis, and nanopatterning, which can contribute to overcoming global problems related to energy and environment, among others. However, the fabrication of ordered nanoarchitectures remains a challenge, even in two dimensions. Therefore, a deeper understanding of the self-assembly processes and substantial factors for building ordered structures is critical for tailoring flexible and desirable nanoarchitectures. Scanning tunneling microscopy is a powerful tool for revealing the molecular conformations, arrangements, and orientations of two-dimensional (2D) networks on surfaces. The fabrication of 2D assemblies involves non-covalent interactions that play a significant role in the molecular arrangement and orientation. Among the non-covalent interactions, dispersion interactions that derive from alkyl chain units are believed to be weak. However, alkyl chains play an important role in the adsorption onto substrates, as well as in the in-plane intermolecular interactions. In this review, we focus on the role of alkyl chains in the formation of ordered 2D assemblies at the solid/liquid interface. The alkyl chain effects on the 2D assemblies are introduced together with examples documented in the past decades.
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Affiliation(s)
- Suyi Liu
- Graduate School of Science and Technology, University of Tsukuba, Ibaraki, 305-8571, Japan
- National Institute of Advanced Industrial Science and Technology (AIST), Tsukuba Central 5, 1-1-1 Higashi, Tsukuba, Ibaraki 305-8565, Japan
| | - Yasuo Norikane
- National Institute of Advanced Industrial Science and Technology (AIST), Tsukuba Central 5, 1-1-1 Higashi, Tsukuba, Ibaraki 305-8565, Japan
- Faculty of Pure and Applied Sciences, University of Tsukuba, Ibaraki, 305-8571, Japan
| | - Yoshihiro Kikkawa
- National Institute of Advanced Industrial Science and Technology (AIST), Tsukuba Central 5, 1-1-1 Higashi, Tsukuba, Ibaraki 305-8565, Japan
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3
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El-Azabawy OE, Higazy SA, Al-Sabagh AM, Abdel-Rahman AA, Nasser NM, Khamis EA. Studying the Temperature Influence on Carbon Steel in Sour Petroleum Media Using Facilely-Designed Schiff Base Polymers as Corrosion Inhibitors. J Mol Struct 2022. [DOI: 10.1016/j.molstruc.2022.134518] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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4
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Kawano SI, Nakaya M, Saitow M, Ishiguro A, Yanai T, Onoe J, Tanaka K. Thermally Stable Array of Discrete C 60s on a Two-Dimensional Crystalline Adlayer of Macrocycles both in Vacuo and under Ambient Pressure. J Am Chem Soc 2022; 144:6749-6758. [PMID: 35315659 DOI: 10.1021/jacs.1c13610] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
A periodic monolayer array of discrete C60s was generated on an atomically flat Au(111) surface with the aid of a template adlayer. The template was a two-dimensional (2D) array of molecular pits prepared on an Au(111) surface through 2D crystallization of shape-persistent macrocycles composed of four carbazole and four salphens/Ni-salphens with a 1 nm hollow. Scanning tunneling microscopy imaging under ultra-high vacuum revealed that the square-shaped macrocycles, with 1.5 nm sides, were arranged with a periodic spacing of approximately 4.0 nm on the Au(111) surface, where the orientation and periodicity of the macrocycles were dependent on their chemical structures. After sublimation of C60s onto the adlayer, a single C60 molecule was entrapped in each pit, and an ordered molecular array of C60s was attained with a pattern similar to that of the macrocycles. The periodic pattern of C60s on the surface was thermally stable up to approximately 200 °C, even under ambient pressure. Scanning tunneling spectroscopy suggested the existence of an electronic interaction between the C60s and the Au(111) surface that was influenced by the macrocycle template on the surface.
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Affiliation(s)
- Shin-Ichiro Kawano
- Department of Chemistry, Graduate School of Science, Nagoya University, Chikusa, Nagoya 464-8602, Japan
| | - Masato Nakaya
- Department of Energy Science and Engineering, Graduate School of Engineering, Nagoya University, Chikusa, Nagoya 464-8603, Japan
| | - Masaaki Saitow
- Department of Chemistry, Graduate School of Science, Nagoya University, Chikusa, Nagoya 464-8602, Japan
| | - Atsuki Ishiguro
- Department of Chemistry, Graduate School of Science, Nagoya University, Chikusa, Nagoya 464-8602, Japan
| | - Takeshi Yanai
- Department of Chemistry, Graduate School of Science, Nagoya University, Chikusa, Nagoya 464-8602, Japan.,Institute of Transformative Bio-Molecules (WPI-ITbM), Nagoya University, Chikusa, Nagoya 464-8601, Japan
| | - Jun Onoe
- Department of Energy Science and Engineering, Graduate School of Engineering, Nagoya University, Chikusa, Nagoya 464-8603, Japan
| | - Kentaro Tanaka
- Department of Chemistry, Graduate School of Science, Nagoya University, Chikusa, Nagoya 464-8602, Japan
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5
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Oh J, Orejon D, Park W, Cha H, Sett S, Yokoyama Y, Thoreton V, Takata Y, Miljkovic N. The apparent surface free energy of rare earth oxides is governed by hydrocarbon adsorption. iScience 2022; 25:103691. [PMID: 35036875 PMCID: PMC8752908 DOI: 10.1016/j.isci.2021.103691] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/17/2021] [Revised: 11/01/2021] [Accepted: 12/20/2021] [Indexed: 12/01/2022] Open
Abstract
The surface free energy of rare earth oxides (REOs) has been debated during the last decade, with some reporting REOs to be intrinsically hydrophilic and others reporting hydrophobic. Here, we investigate the wettability and surface chemistry of pristine and smooth REO surfaces, conclusively showing that hydrophobicity stems from wettability transition due to volatile organic compound adsorption. We show that, for indoor ambient atmospheres and well-controlled saturated hydrocarbon atmospheres, the apparent advancing and receding contact angles of water increase with exposure time. We examined the surfaces comprehensively with multiple surface analysis techniques to confirm hydrocarbon adsorption and correlate it to wettability transition mechanisms. We demonstrate that both physisorption and chemisorption occur on the surface, with chemisorbed hydrocarbons promoting further physisorption due to their high affinity with similar hydrocarbon molecules. This study offers a better understanding of the intrinsic wettability of REOs and provides design guidelines for REO-based durable hydrophobic coatings. REOs are intrinsically hydrophilic but become hydrophobic as they adsorb hydrocarbons Our results demonstrate that both physisorption and chemisorption occur on the surface The adsorption of hydrocarbons was confirmed by multiple surface chemistry analysis Our work offers a better fundamental understanding of the intrinsic wettability of REO
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Affiliation(s)
- Junho Oh
- Department of Mechanical Science and Engineering, University of Illinois at Urbana–Champaign, Urbana, IL 61801, USA
- Department of Mechanical Engineering, BK21 FOUR ERICA-ACE Center, Hanyang University, Ansan, Gyeonggi 15588, Republic of Korea
- Corresponding author
| | - Daniel Orejon
- International Institute for Carbon Neutral Energy Research (WPI-I2CNER), Kyushu University, 744 Moto-oka, Nishi-ku, Fukuoka 819-0395, Japan
- Institute for Multiscale Thermofluids, School of Engineering, University of Edinburgh, Edinburgh, EH9 3FD, UK
| | - Wooyoung Park
- Department of Mechanical Science and Engineering, University of Illinois at Urbana–Champaign, Urbana, IL 61801, USA
| | - Hyeongyun Cha
- Department of Mechanical Science and Engineering, University of Illinois at Urbana–Champaign, Urbana, IL 61801, USA
| | - Soumyadip Sett
- Department of Mechanical Science and Engineering, University of Illinois at Urbana–Champaign, Urbana, IL 61801, USA
| | - Yukihiro Yokoyama
- Department of Mechanical Science and Engineering, University of Illinois at Urbana–Champaign, Urbana, IL 61801, USA
| | - Vincent Thoreton
- International Institute for Carbon Neutral Energy Research (WPI-I2CNER), Kyushu University, 744 Moto-oka, Nishi-ku, Fukuoka 819-0395, Japan
- Department of Materials Science and Engineering, Norwegian University of Science and Technology (NTNU), 7491 Trondheim, Norway
| | - Yasuyuki Takata
- International Institute for Carbon Neutral Energy Research (WPI-I2CNER), Kyushu University, 744 Moto-oka, Nishi-ku, Fukuoka 819-0395, Japan
| | - Nenad Miljkovic
- Department of Mechanical Science and Engineering, University of Illinois at Urbana–Champaign, Urbana, IL 61801, USA
- International Institute for Carbon Neutral Energy Research (WPI-I2CNER), Kyushu University, 744 Moto-oka, Nishi-ku, Fukuoka 819-0395, Japan
- Department of Electrical and Computer Engineering, University of Illinois at Urbana–Champaign, Urbana, IL 61801, USA
- Materials Research Laboratory, University of Illinois at Urbana–Champaign, Urbana, IL 61801, USA
- Corresponding author
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6
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Brann M, Hansknecht SP, Ma X, Sibener SJ. Differential Condensation of Methane Isotopologues Leading to Isotopic Enrichment under Non-equilibrium Gas-Surface Collision Conditions. J Phys Chem A 2021; 125:9405-9413. [PMID: 34658236 PMCID: PMC8558857 DOI: 10.1021/acs.jpca.1c07826] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/03/2021] [Revised: 10/05/2021] [Indexed: 11/30/2022]
Abstract
We examine the initial differential sticking probability of CH4 and CD4 on CH4 and CD4 ices under nonequilibrium flow conditions using a combination of experimental methods and numerical simulations. The experimental methods include time-resolved in situ reflection-absorption infrared spectroscopy (RAIRS) for monitoring on-surface gaseous condensation and complementary King and Wells mass spectrometry techniques for monitoring sticking probabilities that provide confirmatory results via a second independent measurement method. Seeded supersonic beams are employed so that the entrained CH4 and CD4 have the same incident velocity but different kinetic energies and momenta. We found that as the incident velocity of CH4 and CD4 increases, the sticking probabilities for both molecules on a CH4 condensed film decrease systematically, but that preferential sticking and condensation occur for CD4. These observations differ when condensed CD4 is used as the target interface, indicating that the film's phonon and rovibrational densities of states, and collisional energy transfer cross sections, have a role in differential energy accommodation between isotopically substituted incident species. Lastly, we employed a mixed incident supersonic beam composed of both CH4 and CD4 in a 3:1 ratio and measured the condensate composition as well as the sticking probability. When doing so, we see the same effect in the condensed mixed film, supporting an isotopic enrichment of the heavier isotope. We propose that enhanced multi-phonon interactions and inelastic cross sections between the incident CD4 projectile and the CH4 film allow for more efficacious gas-surface energy transfer. VENUS code MD simulations show the same sticking probability differences between isotopologues as observed in the gas-surface scattering experiments. Ongoing analyses of these trajectories will provide additional insights into energy and momentum transfer between the incident species and the interface. These results offer a new route for isotope enrichment via preferential condensation of heavier isotopes and isotopologues during gas-surface collisions under specifically selected substrate, gas-mixture, and incident velocity conditions. They also yield valuable insights into gaseous condensation under non-equilibrium conditions such as occur in aircraft flight in low-temperature environments. Moreover, these results can help to explain the increased abundance of deuterium in solar system planets and can be incorporated into astrophysical models of interstellar icy dust grain surface processes.
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Affiliation(s)
- Michelle
R. Brann
- The James Franck Institute
and Department of Chemistry, The University
of Chicago, 929 E. 57th Street, Chicago, Illinois 60637, United
States
| | - Stephen P. Hansknecht
- The James Franck Institute
and Department of Chemistry, The University
of Chicago, 929 E. 57th Street, Chicago, Illinois 60637, United
States
| | - Xinyou Ma
- The James Franck Institute
and Department of Chemistry, The University
of Chicago, 929 E. 57th Street, Chicago, Illinois 60637, United
States
| | - S. J. Sibener
- The James Franck Institute
and Department of Chemistry, The University
of Chicago, 929 E. 57th Street, Chicago, Illinois 60637, United
States
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7
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Shrestha B, Ezazi M, Rad SV, Kwon G. Predicting kinetics of water-rich permeate flux through photocatalytic mesh under visible light illumination. Sci Rep 2021; 11:21065. [PMID: 34702950 PMCID: PMC8548496 DOI: 10.1038/s41598-021-00607-w] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/19/2021] [Accepted: 10/08/2021] [Indexed: 11/17/2022] Open
Abstract
Membrane-based separation technologies are attractive to remediating unconventional water sources, including brackish, industrial, and municipal wastewater, due to their versatility and relatively high energy efficiency. However, membrane fouling by dissolved or suspended organic substances remains a primary challenge which can result in an irreversible decline of the permeate flux. To overcome this, membranes have been incorporated with photocatalytic materials that can degrade these organic substances deposited on the surface upon light illumination. While such photocatalytic membranes have demonstrated that they can recover their inherent permeability, less information is known about the effect of photocatalysis on the kinetics of the permeate flux. In this work, a photocatalytic mesh that can selectively permeate water while repelling oil was fabricated by coating a mixture of nitrogen-doped TiO2 (N-TiO2) and perfluorosilane-grafted SiO2 (F-SiO2) nanoparticles on a stainless steel mesh. Utilizing the photocatalytic mesh, the time-dependent evolution of the water-rich permeate flux as a result of photocatalytic degradation of the oil was studied under the visible light illumination. A mathematical model was developed that can relate the photocatalytic degradation of the organic substances deposited on a mesh surface to the evolution of the permeate flux. This model was established by integrating the Langmuir-Hinshelwood kinetics for photocatalysis and the Cassie-Baxter wettability analysis on a chemically heterogeneous mesh surface into a permeate flux relation. Consequently, the time-dependent water-rich permeate flux values are compared with those predicted by using the model. It is found that the model can predict the evolution of the water-rich permeate flux with a goodness of fit of 0.92.
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Affiliation(s)
- Bishwash Shrestha
- Department of Mechanical Engineering, University of Kansas, Lawrence, KS, 66045, USA
| | - Mohammadamin Ezazi
- Department of Mechanical Engineering, University of Kansas, Lawrence, KS, 66045, USA
| | - Seyed Vahid Rad
- Department of Mechanical Engineering, University of Kansas, Lawrence, KS, 66045, USA
| | - Gibum Kwon
- Department of Mechanical Engineering, University of Kansas, Lawrence, KS, 66045, USA.
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8
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Westphal G, Wega J, Dissanayake REA, Schäfer T. Chirality detection of surface desorption products using photoelectron circular dichroism. J Chem Phys 2020; 153:054707. [PMID: 32770893 DOI: 10.1063/5.0014917] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
Chirality detection of gas-phase molecules at low concentrations is challenging as the molecular number density is usually too low to perform conventional circular dichroism absorption experiments. In recent years, new spectroscopic methods have been developed to detect chirality in the gas phase. In particular, the angular distribution of photoelectrons after multiphoton laser ionization of chiral molecules using circularly polarized light is highly sensitive to the enantiomeric form of the ionized molecule [multiphoton photoelectron circular dichroism (MP-PECD)]. In this paper, we employ the MP-PECD as an analytic tool for chirality detection of the bicyclic monoterpene fenchone desorbing from a Ag(111) crystal. We record velocity-resolved kinetics of fenchone desorption on Ag(111) using pulsed molecular beams with ion imaging techniques. In addition, we measure temperature-programmed desorption spectra of the same system. Both experiments indicate weak physisorption of fenchone on Ag(111). We combine both experimental techniques with enantiomer-specific detection by recording MP-PECD of desorbing molecules using photoelectron imaging spectroscopy. We can clearly assign the enantiomeric form of the desorption product fenchone in sub-monolayer concentration. The experiment demonstrates the combination of MP-PECD with surface science experiments, paving the way for enantiomer-specific detection of surface reaction products on heterogeneous catalysts for asymmetric synthesis.
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Affiliation(s)
- Georg Westphal
- Georg-August-Universität Göttingen, Institut für Physikalische Chemie, Tammannstr. 6, 37077 Göttingen, Germany
| | - Johannes Wega
- Georg-August-Universität Göttingen, Institut für Physikalische Chemie, Tammannstr. 6, 37077 Göttingen, Germany
| | - Rasika E A Dissanayake
- Plant and Environmental Sciences Laboratory, National Institute of Fundamental Studies, Hantana Road, Kandy, Sri Lanka
| | - Tim Schäfer
- Georg-August-Universität Göttingen, Institut für Physikalische Chemie, Tammannstr. 6, 37077 Göttingen, Germany
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9
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Synthesis, spectral analysis, theoretical studies, molecular dynamic simulation and comparison of anticorrosive activity of an ester and an acid α-Hydroxyphosphonates. J Mol Struct 2019. [DOI: 10.1016/j.molstruc.2019.06.012] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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10
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Chafai N, Chafaa S, Benbouguerra K, Hellal A, Mehri M. Synthesis, spectral analysis, anti-corrosive activity and theoretical study of an aromatic hydrazone derivative. J Mol Struct 2019. [DOI: 10.1016/j.molstruc.2018.12.073] [Citation(s) in RCA: 32] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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11
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Lovat G, Doud EA, Lu D, Kladnik G, Inkpen MS, Steigerwald ML, Cvetko D, Hybertsen MS, Morgante A, Roy X, Venkataraman L. Determination of the structure and geometry of N-heterocyclic carbenes on Au(111) using high-resolution spectroscopy. Chem Sci 2019; 10:930-935. [PMID: 30774887 PMCID: PMC6346291 DOI: 10.1039/c8sc03502d] [Citation(s) in RCA: 51] [Impact Index Per Article: 10.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/07/2018] [Accepted: 11/04/2018] [Indexed: 12/01/2022] Open
Abstract
N-heterocyclic carbenes (NHCs) bind very strongly to transition metals due to their unique electronic structure featuring a divalent carbon atom with a lone pair in a highly directional sp2-hybridized orbital. As such, they can be assembled into monolayers on metal surfaces that have enhanced stability compared to their thiol-based counterparts. The utility of NHCs to form such robust self-assembled monolayers (SAMs) was only recently recognized and many fundamental questions remain. Here we investigate the structure and geometry of a series of NHCs on Au(111) using high-resolution X-ray photoelectron spectroscopy and density functional theory calculations. We find that the N-substituents on the NHC ring strongly affect the molecule-metal interaction and steer the orientation of molecules in the surface layer. In contrast to previous reports, our experimental and theoretical results provide unequivocal evidence that NHCs with N-methyl substituents bind to undercoordinated adatoms to form flat-lying complexes. In these SAMs, the donor-acceptor interaction between the NHC lone pair and the undercoordinated Au adatom is primarily responsible for the strong bonding of the molecules to the surface. NHCs with bulkier N-substituents prevent the formation of such complexes by forcing the molecules into an upright orientation. Our work provides unique insights into the bonding and geometry of NHC monolayers; more generally, it charts a clear path to manipulating the interaction between NHCs and metal surfaces using traditional coordination chemistry synthetic strategies.
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Affiliation(s)
- Giacomo Lovat
- Department of Applied Physics and Applied Mathematics , Columbia University , New York , New York 10027 , USA .
| | - Evan A Doud
- Department of Chemistry , Columbia University , New York , New York 10027 , USA .
| | - Deyu Lu
- Center for Functional Nanomaterials , Brookhaven National Laboratory , Upton , New York , USA
| | - Gregor Kladnik
- CNR-IOM Laboratorio Nazionale TASC , Basovizza SS-14, km 163.5 , 34012 Trieste , Italy .
- Faculty of Mathematics and Physics , University of Ljubljana , Jadranska 19 , Ljubljana , Slovenia
| | - Michael S Inkpen
- Department of Applied Physics and Applied Mathematics , Columbia University , New York , New York 10027 , USA .
| | | | - Dean Cvetko
- CNR-IOM Laboratorio Nazionale TASC , Basovizza SS-14, km 163.5 , 34012 Trieste , Italy .
- Faculty of Mathematics and Physics , University of Ljubljana , Jadranska 19 , Ljubljana , Slovenia
- J. Stefan Institute , Jamova 39 , Ljubljana , SI-1000 , Slovenia
| | - Mark S Hybertsen
- Center for Functional Nanomaterials , Brookhaven National Laboratory , Upton , New York , USA
| | - Alberto Morgante
- CNR-IOM Laboratorio Nazionale TASC , Basovizza SS-14, km 163.5 , 34012 Trieste , Italy .
- Department of Physics , University of Trieste , via A. Valerio 2 , 34127 , Trieste , Italy
| | - Xavier Roy
- Department of Chemistry , Columbia University , New York , New York 10027 , USA .
| | - Latha Venkataraman
- Department of Applied Physics and Applied Mathematics , Columbia University , New York , New York 10027 , USA .
- Department of Chemistry , Columbia University , New York , New York 10027 , USA .
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12
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Polynskaya JG, Lebedev AV, Knizhnik AA, Sinitsa AS, Smirnov RV, Potapkin BV. Influence of charge state and active site structure of tetrahedral copper and silver clusters on the methane activation. COMPUT THEOR CHEM 2019. [DOI: 10.1016/j.comptc.2018.12.006] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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13
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Chevry M, Menuel S, Léger B, Noël S, Monflier E, Hapiot F. Hydrogenation of hydrophobic substrates catalyzed by gold nanoparticles embedded in Tetronic/cyclodextrin-based hydrogels. NEW J CHEM 2019. [DOI: 10.1039/c8nj06081a] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Abstract
Hydrogenation of alkenes, alkynes and aldehydes was investigated under biphasic conditions using Au nanoparticles (AuNP) embedded into combinations of α-cyclodextrin (α-CD) and a poloxamine (Tetronic®90R4).
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Affiliation(s)
- M. Chevry
- Univ. Artois, CNRS
- Centrale Lille
- ENSCL
- Univ. Lille
- UMR 8181
| | - S. Menuel
- Univ. Artois, CNRS
- Centrale Lille
- ENSCL
- Univ. Lille
- UMR 8181
| | - B. Léger
- Univ. Artois, CNRS
- Centrale Lille
- ENSCL
- Univ. Lille
- UMR 8181
| | - S. Noël
- Univ. Artois, CNRS
- Centrale Lille
- ENSCL
- Univ. Lille
- UMR 8181
| | - E. Monflier
- Univ. Artois, CNRS
- Centrale Lille
- ENSCL
- Univ. Lille
- UMR 8181
| | - F. Hapiot
- Univ. Artois, CNRS
- Centrale Lille
- ENSCL
- Univ. Lille
- UMR 8181
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14
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Benbouguerra K, Chafaa S, Chafai N, Mehri M, Moumeni O, Hellal A. Synthesis, spectroscopic characterization and a comparative study of the corrosion inhibitive efficiency of an α-aminophosphonate and Schiff base derivatives: Experimental and theoretical investigations. J Mol Struct 2018. [DOI: 10.1016/j.molstruc.2017.12.049] [Citation(s) in RCA: 34] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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15
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Marx T, Shen X, Dietzel D, Schirmeisen A. Nanotribological Properties of Hexadecanethiol Self-Assembled Monolayers on Au(111): Structure, Temperature, and Velocity. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2017; 33:6005-6010. [PMID: 28603995 DOI: 10.1021/acs.langmuir.7b01131] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
Self-assembled monolayers (SAM) are promising building blocks for the optimization of a large variety of systems both on the nano- and on the microscale. Among other applications, SAM are often used as protective coating or friction modifiers. In this work, we have used hexadecanethiol SAM on Au(111) as a model system and studied the different mechanisms of energy dissipation during temperature and velocity dependent friction force microscopy (FFM). In a number of cases, the SAM remained stable during atomic force microscopy experiments and friction-velocity isotherms related dissipation to an activation energy. In other cases, friction experiments lead to an irreversible deterioration of the SAM. This can rather be associated with the general SAM structure that was analyzed by scanning tunneling microscopy and showed a large variety of potential breakdown points like, for example, grain boundaries, step edges, or substrate-related holes in the SAM.
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Affiliation(s)
- Torben Marx
- Institute for Applied Physics, Justus-Liebig-Universität , 35392 Gießen, Germany
| | - Ximeng Shen
- Institute for Applied Physics, Justus-Liebig-Universität , 35392 Gießen, Germany
| | - Dirk Dietzel
- Institute for Applied Physics, Justus-Liebig-Universität , 35392 Gießen, Germany
| | - André Schirmeisen
- Institute for Applied Physics, Justus-Liebig-Universität , 35392 Gießen, Germany
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16
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Abdelrahman OA, Heyden A, Bond JQ. Microkinetic analysis of C3–C5 ketone hydrogenation over supported Ru catalysts. J Catal 2017. [DOI: 10.1016/j.jcat.2017.01.022] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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17
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Synthesis, characterization and the inhibition activity of a new α-aminophosphonic derivative on the corrosion of XC48 carbon steel in 0.5M H2SO4: Experimental and theoretical studies. J Taiwan Inst Chem Eng 2017. [DOI: 10.1016/j.jtice.2016.10.026] [Citation(s) in RCA: 79] [Impact Index Per Article: 11.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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18
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Karakalos S, Xu Y, Cheenicode Kabeer F, Chen W, Rodríguez-Reyes JCF, Tkatchenko A, Kaxiras E, Madix RJ, Friend CM. Noncovalent Bonding Controls Selectivity in Heterogeneous Catalysis: Coupling Reactions on Gold. J Am Chem Soc 2016; 138:15243-15250. [DOI: 10.1021/jacs.6b09450] [Citation(s) in RCA: 37] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
| | | | | | - Wei Chen
- ICQD,
Hefei National Laboratory for Physical Sciences at Microscale, and
Synergetic Innovation Center of Quantum Information and Quantum Physics, University of Science and Technology of China, Hefei, Anhui 230026, China
| | - Juan Carlos F. Rodríguez-Reyes
- Department
of Industrial Chemical Engineering, Universidad de Ingeniería y Tecnología, Avenida Cascanueces 2221, Lima 43 15063, Peru
| | - Alexandre Tkatchenko
- Fritz-Haber-Institut der Max-Planck-Gesellschaft, Faradayweg 4-6, Berlin D-14195, Germany
- Physics
and
Materials Science Research Unit, University of Luxembourg, Luxembourg City L-1511 Luxembourg
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19
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In situ observation of self-assembled hydrocarbon Fischer–Tropsch products on a cobalt catalyst. Nat Chem 2016; 8:929-34. [DOI: 10.1038/nchem.2613] [Citation(s) in RCA: 77] [Impact Index Per Article: 9.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/05/2016] [Accepted: 08/10/2016] [Indexed: 11/09/2022]
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20
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Zhang H, Gong Z, Sun K, Duan R, Ji P, Li L, Li C, Müllen K, Chi L. Two-Dimensional Chirality Transfer via On-Surface Reaction. J Am Chem Soc 2016; 138:11743-8. [PMID: 27548402 DOI: 10.1021/jacs.6b05597] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Two-dimensional chirality transfer from self-assembled (SA) molecules to covalently bonded products was achieved via on-surface synthesis on Au(111) substrates by choosing 1,4-dibromo-2,5-didodecylbenzene (12DB) and 1,4-dibromo-2,5-ditridecylbenzene (13DB) as designed precursors. Scanning tunneling microscopy investigations reveal that their aryl-aryl coupling reaction occurs by connecting the nearest neighboring precursors and thus preserving the SA lamellar structure. The SA structures of 12(13)DB precursors determine the final structures of produced oligo-p-phenylenes (OPP) on the surface. Pure homochiral domains (12DB) give rise to homochiral domains of OPP, whereas lamellae containing mixed chiral geometry of the precursor (13DB) results in the formation of racemic lamellae of OPP.
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Affiliation(s)
- Haiming Zhang
- Institute of Functional Nano&Soft Materials (FUNSOM), Jiangsu Key Laboratory for Carbon-Based Functional Materials & Devices, Soochow University , 199 Ren'ai Road, Suzhou, Jiangsu 215123, People's Republic of China
| | - Zhongmiao Gong
- Institute of Functional Nano&Soft Materials (FUNSOM), Jiangsu Key Laboratory for Carbon-Based Functional Materials & Devices, Soochow University , 199 Ren'ai Road, Suzhou, Jiangsu 215123, People's Republic of China
| | - Kewei Sun
- Institute of Functional Nano&Soft Materials (FUNSOM), Jiangsu Key Laboratory for Carbon-Based Functional Materials & Devices, Soochow University , 199 Ren'ai Road, Suzhou, Jiangsu 215123, People's Republic of China
| | - Ruomeng Duan
- Max Planck Institute for Polymer Research , Ackermannweg 10, D-55128 Mainz, Germany
| | - Penghui Ji
- Institute of Functional Nano&Soft Materials (FUNSOM), Jiangsu Key Laboratory for Carbon-Based Functional Materials & Devices, Soochow University , 199 Ren'ai Road, Suzhou, Jiangsu 215123, People's Republic of China
| | - Ling Li
- Institute of Functional Nano&Soft Materials (FUNSOM), Jiangsu Key Laboratory for Carbon-Based Functional Materials & Devices, Soochow University , 199 Ren'ai Road, Suzhou, Jiangsu 215123, People's Republic of China
| | - Chen Li
- Max Planck Institute for Polymer Research , Ackermannweg 10, D-55128 Mainz, Germany
| | - Klaus Müllen
- Max Planck Institute for Polymer Research , Ackermannweg 10, D-55128 Mainz, Germany.,Institute of Physical Chemistry, Johannes Gutenberg University Mainz , Duesbergweg 10-14, D-55128 Mainz, Germany
| | - Lifeng Chi
- Institute of Functional Nano&Soft Materials (FUNSOM), Jiangsu Key Laboratory for Carbon-Based Functional Materials & Devices, Soochow University , 199 Ren'ai Road, Suzhou, Jiangsu 215123, People's Republic of China
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21
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Comparative Analysis of Reactant and Product Adsorption Energies in the Selective Oxidative Coupling of Alcohols to Esters on Au(111). Top Catal 2016. [DOI: 10.1007/s11244-016-0660-5] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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22
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Sebeck K, Shao C, Kieffer J. Alkane-Metal Interfacial Structure and Elastic Properties by Molecular Dynamics Simulation. ACS APPLIED MATERIALS & INTERFACES 2016; 8:16885-16896. [PMID: 27282363 DOI: 10.1021/acsami.6b01665] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
The structure of amorphous materials near the interface with an ordered substrate can be affected by various characteristics of the adjoining phases, such as the lattice spacing of the adherent surface, polymer chain length, and adhesive strength. To discern the influence of each of these factors, four FCC metal lattices are examined for three chain lengths of n-alkane and van der Waals interfacial interactions are controlled by adjusting the Lennard-Jones 12-6 potential parameters. The role of interaction strength is investigated for a single chain length and substrate combination. Four nanoconfined systems are also analyzed in terms of their mechanical strength. A strong layering effect is observed near the interface for all systems. The distinctiveness of polymer layering, i.e., the maximum density and spatial extent, exhibits a logarithmic dependence on the interaction strength between polymer and substrate. Congruency with the substrate lattice parameter further enhances this effect. Moreover, the elastic modulus of the alkane phase as a function of layer thickness indicates that the effects of ordering within the structure extend beyond the immediately obvious interfacial region.
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Affiliation(s)
- Katherine Sebeck
- Department of Materials Science and Engineering, University of Michigan , 2300 Hayward Street, Ann Arbor, Michigan 48109, United States
| | - Chen Shao
- Department of Materials Science and Engineering, University of Michigan , 2300 Hayward Street, Ann Arbor, Michigan 48109, United States
| | - John Kieffer
- Department of Materials Science and Engineering, University of Michigan , 2300 Hayward Street, Ann Arbor, Michigan 48109, United States
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23
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Suzuki M, Guo Z, Tahara K, Kotyk JFK, Nguyen H, Gotoda J, Iritani K, Rubin Y, Tobe Y. Self-Assembled Dehydro[24]annulene Monolayers at the Liquid/Solid Interface: Toward On-Surface Synthesis of Tubular π-Conjugated Nanowires. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2016; 32:5532-5541. [PMID: 27183003 DOI: 10.1021/acs.langmuir.6b00744] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
We have studied the self-assembly behavior of dehydro[24]annulene (D24A) derivatives 1, 2a-2d, and 3a-3c at the liquid/solid interface using scanning tunneling microscopy (STM). Both the relative placement and the nature of the four D24A substituents strongly influence the self-assembly pattern. Overall, the eight D24A derivatives examined in this study display seven types of 2D packing patterns. The D24A derivatives 1, 2a, and 3a have either two or four stearate groups and adopt face-on configurations of their macrocyclic cores with respect to the highly oriented pyrolytic graphite (HOPG) surface. Their 2D packing pattern is determined by the interchain spacings and number of stearate substituents. The D24A derivatives 2b-2d and 3b-3c bear hydrogen-bonding carbamate groups to further strengthen intermolecular interactions. Face-on patterns were also observed for most of these compounds, while an unstable edge-on self-assembly was observed in the case of 2b at room temperature. Stable edge-on self-assemblies of D24A derivatives were sought for this work as an important stepping stone to achieving the on-surface topochemical polymerization of these carbon-rich macrocycles into tubular π-conjugated nanowires. The overall factors determining the 2D packing patterns of D24As at the liquid/solid interface are discussed on the basis of theoretical simulations, providing useful guidelines for controlling the self-assembly pattern of future D24A macrocycles.
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Affiliation(s)
- Mitsuharu Suzuki
- Department of Chemistry and Biochemistry, University of California, Los Angeles , Los Angeles, California 90095-1569, United States
| | - Zhaoqi Guo
- Division of Frontier Materials Science, Graduate School of Engineering Science, Osaka University , Toyonaka, Osaka 560-8531, Japan
| | - Kazukuni Tahara
- Division of Frontier Materials Science, Graduate School of Engineering Science, Osaka University , Toyonaka, Osaka 560-8531, Japan
- Department of Applied Chemistry, School of Science and Technology, Meiji University , 1-1-1 Higashimita, Tama-ku, Kawasaki 214-8571, Japan
| | - Juliet F Khosrowabadi Kotyk
- Department of Chemistry and Biochemistry, University of California, Los Angeles , Los Angeles, California 90095-1569, United States
| | - Huan Nguyen
- Department of Chemistry and Biochemistry, University of California, Los Angeles , Los Angeles, California 90095-1569, United States
| | - Jun Gotoda
- Division of Frontier Materials Science, Graduate School of Engineering Science, Osaka University , Toyonaka, Osaka 560-8531, Japan
| | - Kohei Iritani
- Division of Frontier Materials Science, Graduate School of Engineering Science, Osaka University , Toyonaka, Osaka 560-8531, Japan
| | - Yves Rubin
- Department of Chemistry and Biochemistry, University of California, Los Angeles , Los Angeles, California 90095-1569, United States
| | - Yoshito Tobe
- Division of Frontier Materials Science, Graduate School of Engineering Science, Osaka University , Toyonaka, Osaka 560-8531, Japan
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24
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Ting ECM, Popa T, Paci I. Surface-site reactivity in small-molecule adsorption: A theoretical study of thiol binding on multi-coordinated gold clusters. BEILSTEIN JOURNAL OF NANOTECHNOLOGY 2016; 7:53-61. [PMID: 26925352 PMCID: PMC4734309 DOI: 10.3762/bjnano.7.6] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/15/2015] [Accepted: 12/29/2015] [Indexed: 05/08/2023]
Abstract
BACKGROUND The adsorption of organic molecules on metal surfaces has a broad array of applications, from device engineering to medical diagnosis. The most extensively investigated class of metal-molecule complexes is the adsorption of thiols on gold. RESULTS In the present manuscript, we investigate the dependence of methylthiol adsorption structures and energies on the degree of unsaturation at the metal binding site. We designed an Au20 cluster with a broad range of metal site coordination numbers, from 3 to 9, and examined the binding conditions of methylthiol at the various sites. CONCLUSION We found that despite the small molecular size, the dispersive interactions of the backbone are a determining factor in the molecular affinity for various sites. Kink sites were preferred binding locations due to the availability of multiple surface atoms for dispersive interactions with the methyl groups, whereas tip sites experienced low affinity, despite having low coordination numbers.
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Affiliation(s)
- Elvis C M Ting
- Department of Chemistry, University of Victoria, Victoria, BC, V8W 3V6, Canada
| | - Tatiana Popa
- Department of Chemistry, University of Victoria, Victoria, BC, V8W 3V6, Canada
| | - Irina Paci
- Department of Chemistry, University of Victoria, Victoria, BC, V8W 3V6, Canada
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25
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Akbarzadeh H, Abbaspour M, Khomarian E. Propene adsorption on gold–palladium nanoalloys supported on bundle nanotubes. RSC Adv 2016. [DOI: 10.1039/c6ra12350c] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023] Open
Abstract
Propene adsorption on (Pd–Au)N nanoalloys supported on carbon nanotube (CNT) bundles has been investigated using molecular dynamics (MD) simulations at 300 K.
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Affiliation(s)
- Hamed Akbarzadeh
- Department of Chemistry
- Faculty of Basic Sciences
- Hakim Sabzevari University
- 96179-76487 Sabzevar
- Iran
| | - Mohsen Abbaspour
- Department of Chemistry
- Faculty of Basic Sciences
- Hakim Sabzevari University
- 96179-76487 Sabzevar
- Iran
| | - Elham Khomarian
- Department of Chemistry
- Faculty of Basic Sciences
- Hakim Sabzevari University
- 96179-76487 Sabzevar
- Iran
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26
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Ta DT, Tieu AK, Zhu HT, Kosasih B. Thin film lubrication of hexadecane confined by iron and iron oxide surfaces: A crucial role of surface structure. J Chem Phys 2015; 143:164702. [DOI: 10.1063/1.4933203] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023] Open
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27
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Urrego FA, Núñez GA, Donaire YD, del Valle JM. Equilibrium partition of rapeseed oil between supercritical CO2 and prepressed rapeseed. J Supercrit Fluids 2015. [DOI: 10.1016/j.supflu.2015.04.004] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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28
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Affiliation(s)
- Robert M. Metzger
- Laboratory for Molecular
Electronics, Department of Chemistry, The University of Alabama, Box 870336, Tuscaloosa, Alabama 35487-0336, United States
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29
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Ikabata Y, Tsukamoto Y, Imamura Y, Nakai H. Local response dispersion method in periodic systems: Implementation and assessment. J Comput Chem 2014; 36:303-11. [DOI: 10.1002/jcc.23807] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2014] [Revised: 11/06/2014] [Accepted: 11/08/2014] [Indexed: 11/09/2022]
Affiliation(s)
- Yasuhiro Ikabata
- Department of Chemistry and Biochemistry; School of Advanced Science and Engineering, Waseda University; 3-4-1 Okubo Shinjuku-ku Tokyo 169-8555 Japan
| | - Yusuke Tsukamoto
- Department of Chemistry and Biochemistry; School of Advanced Science and Engineering, Waseda University; 3-4-1 Okubo Shinjuku-ku Tokyo 169-8555 Japan
| | - Yutaka Imamura
- Department of Chemistry and Biochemistry; School of Advanced Science and Engineering, Waseda University; 3-4-1 Okubo Shinjuku-ku Tokyo 169-8555 Japan
| | - Hiromi Nakai
- Department of Chemistry and Biochemistry; School of Advanced Science and Engineering, Waseda University; 3-4-1 Okubo Shinjuku-ku Tokyo 169-8555 Japan
- Research Institute for Science and Engineering, Waseda University; 3-4-1 Okubo Shinjuku-ku Tokyo 169-8555 Japan
- CREST, Japan Science and Technology Agency; 4-1-8 Honcho Kawaguchi Saitama 332-0012 Japan
- Elements Strategy Initiative for Catalysts and Batteries (ESICB), Kyoto University; Katsura Kyoto 615-8520 Japan
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30
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31
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Jakšić OM, Čupić ŽD, Jakšić ZS, Randjelović DV, Kolar-Anić LZ. Monolayer gas adsorption in plasmonic sensors: Comparative analysis of kinetic models. RUSSIAN JOURNAL OF PHYSICAL CHEMISTRY A 2013. [DOI: 10.1134/s0036024413130128] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
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32
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Hughes ZE, Wright LB, Walsh TR. Biomolecular adsorption at aqueous silver interfaces: first-principles calculations, polarizable force-field simulations, and comparisons with gold. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2013; 29:13217-13229. [PMID: 24079907 DOI: 10.1021/la402839q] [Citation(s) in RCA: 49] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/02/2023]
Abstract
The molecular simulation of biomolecules adsorbed at noble metal interfaces can assist in the development of bionanotechnology applications. In line with advances in polarizable force fields for adsorption at aqueous gold interfaces, there is scope for developing a similar force field for silver. One way to accomplish this is via the generation of in vacuo adsorption energies calculated using first-principles approaches for a wide range of different but biologically relevant small molecules, including water. Here, we present such first-principles data for a comprehensive range of bio-organic molecules obtained from plane-wave density functional theory calculations using the vdW-DF functional. As reported previously for the gold force field, GolP-CHARMM (Wright, L. B.; Rodger, P. M.; Corni, S.; Walsh, T. R. GolP-CHARMM: first-principles based force-fields for the interaction of proteins with Au(111) and Au(100). J. Chem. Theory Comput. 2013, 9, 1616-1630), we have used these data to construct a a new force field, AgP-CHARMM, suitable for the simulation of biomolecules at the aqueous Ag(111) and Ag(100) interfaces. This force field is derived to be consistent with GolP-CHARMM such that adsorption on Ag and Au can be compared on an equal footing. Our force fields are used to evaluate the water overlayer stability on both silver and gold, finding good agreement with known behaviors. We also calculate and compare the structuring (spatial and orientational) of liquid water adsorbed at both silver and gold. Finally, we report the adsorption free energy of a range of amino acids at both the Au(111) and Ag(111) aqueous interfaces, calculated using metadynamics. Stronger adsorption on gold was noted in most cases, with the exception being the carboxylate group present in aspartic acid. Our findings also indicate differences in the binding free energy profile between silver and gold for some amino acids, notably for His and Arg. Our analysis suggests that the relatively stronger structuring of the first water layer on silver, relative to gold, could give rise to these differences.
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Affiliation(s)
- Zak E Hughes
- Institute for Frontier Materials, Deakin University , Geelong, Victoria 3216, Australia
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33
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Hauptmann N, Scheil K, Gopakumar TG, Otte FL, Schütt C, Herges R, Berndt R. Surface Control of Alkyl Chain Conformations and 2D Chiral Amplification. J Am Chem Soc 2013; 135:8814-7. [DOI: 10.1021/ja4036187] [Citation(s) in RCA: 36] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
Affiliation(s)
- Nadine Hauptmann
- Institut für Experimentelle
und Angewandte Physik, Christian-Albrechts-Universität zu Kiel, 24098 Kiel, Germany
| | - Katharina Scheil
- Institut für Experimentelle
und Angewandte Physik, Christian-Albrechts-Universität zu Kiel, 24098 Kiel, Germany
| | - Thiruvancheril G. Gopakumar
- Institut für Experimentelle
und Angewandte Physik, Christian-Albrechts-Universität zu Kiel, 24098 Kiel, Germany
| | - Franziska L. Otte
- Otto-Diels-Institut für
Organische Chemie, Christian-Albrechts-Universität zu Kiel, Otto-Hahn-Platz 4, 24098 Kiel, Germany
| | - Christian Schütt
- Otto-Diels-Institut für
Organische Chemie, Christian-Albrechts-Universität zu Kiel, Otto-Hahn-Platz 4, 24098 Kiel, Germany
| | - Rainer Herges
- Otto-Diels-Institut für
Organische Chemie, Christian-Albrechts-Universität zu Kiel, Otto-Hahn-Platz 4, 24098 Kiel, Germany
| | - Richard Berndt
- Institut für Experimentelle
und Angewandte Physik, Christian-Albrechts-Universität zu Kiel, 24098 Kiel, Germany
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34
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Masnadi M, Urquhart SG. Indirect molecular epitaxy: deposition of n-alkane thin films on Au coated NaCl(001) and HOPG(0001) surfaces. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2013; 29:6302-6307. [PMID: 23634726 DOI: 10.1021/la304944k] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/02/2023]
Abstract
The epitaxial growth of organic molecules can lead to the formation of complex orientated morphologies. In previous work, we studied the kinetic and thermodynamic factors that drive the epitaxial growth of n-alkane thin films on HOPG(0001) and NaCl(001) by physical vapor deposition. A wide variety of morphologies are observed as a function of deposition conditions (substrate temperature, n-alkane chain length, etc.). In the current study we examine how a modified substrate (Au deposited on a HOPG(0001) or NaCl(001) substrate) affects the epitaxial growth of n-C36H74 (50 nm thick) relative to the uncoated substrates. This "indirect epitaxy", in which the patterned attractive forces of the substrate are transferred through a thin metal film, can tailor the conditions for epitaxial growth. The observation of fourfold symmetry for n-alkane growth on Au/NaCl(001) and sixfold symmetry for n-alkane growth on Au/HOPG(0001) demonstrates indirect epitaxy over a wide range of substrate temperatures during deposition.
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Affiliation(s)
- Mitra Masnadi
- Department of Chemistry, University of Saskatchewan, Saskatoon, SK S7N 5C9, Canada
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35
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Xu B, Madix RJ, Friend CM. Alkyl groups as synthetic vehicles in gold-mediated oxidative coupling reactions. Phys Chem Chem Phys 2013; 15:3179-85. [PMID: 23340817 DOI: 10.1039/c3cp43956a] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The use of surface-bound alkyl and phenyl groups as synthetic vehicles in coupling reactions on oxygen-activated Au(111) is demonstrated by the formation of ethers via alkyl and phenyl iodides. Ethers are formed by successive additions of surface-bound alkyl groups to adsorbed atomic oxygen to form first the alkoxy and then the ether. The addition of the ethyl group to adsorbed oxygen on Au(111) is the rate-limiting step leading to diethyl ether formation. Alkyl groups also add to adsorbed alkoxy groups formed from alcohols. An unusual feature of the alkyl iodide reactions on Au is that oxygen is not required for the activation step; hence, opening new potential reactive pathways on metallic Au.
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Affiliation(s)
- Bingjun Xu
- Department of Chemistry and Chemical Biology, Harvard University, Cambridge, MA 02138, USA
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36
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Wright LB, Rodger PM, Corni S, Walsh TR. GolP-CHARMM: First-Principles Based Force Fields for the Interaction of Proteins with Au(111) and Au(100). J Chem Theory Comput 2013; 9:1616-30. [DOI: 10.1021/ct301018m] [Citation(s) in RCA: 177] [Impact Index Per Article: 16.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Affiliation(s)
- Louise B. Wright
- University of Warwick, Dept.
of Chemistry and Centre for Scientific Computing, Coventry, CV4 7AL,
United Kingdom
| | - P. Mark Rodger
- University of Warwick, Dept.
of Chemistry and Centre for Scientific Computing, Coventry, CV4 7AL,
United Kingdom
| | | | - Tiffany R. Walsh
- Deakin University,
Institute for
Frontier Materials, Geelong, Vic. 3216, Australia
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37
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Lang SM, Frank A, Bernhardt TM. Comparison of methane activation and catalytic ethylene formation on free gold and palladium dimer cations: product binding determines the catalytic turnover. Catal Sci Technol 2013. [DOI: 10.1039/c3cy00286a] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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38
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Bellucci L, Brancolini G, Calzolari A, Carrillo Parramon O, Corni S, Di Felice R. Proteins and Peptides at Gold Surfaces: Insights from Atomistic Simulations. ACTA ACUST UNITED AC 2012. [DOI: 10.1021/bk-2012-1120.ch010] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/12/2023]
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39
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Balandina T, Tahara K, Sändig N, Blunt MO, Adisoejoso J, Lei S, Zerbetto F, Tobe Y, De Feyter S. Role of substrate in directing the self-assembly of multicomponent supramolecular networks at the liquid-solid interface. ACS NANO 2012; 6:8381-9. [PMID: 22954382 DOI: 10.1021/nn303144r] [Citation(s) in RCA: 36] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/05/2023]
Abstract
The self-assembly of multicomponent networks at the liquid-solid interface between Au(111) or highly oriented pyrolytic graphite (HOPG) and organic solvents was investigated using scanning tunneling microscopy. Alkoxylated dehydrobenzo[12]annulene (DBA) derivatives form hexagonal nanoporous networks, which trap either single molecules of coronene (COR) or small clusters of COR and isophthalic acid to form multicomponent networks. The pattern of interdigitation between alkyl chains from DBA molecules produces hexagonal pores that are either chiral or achiral. On Au(111) substrates multicomponent networks display an ordered superlattice arrangement of chiral and achiral pores. In comparison, similar networks on HOPG display only chiral pores. The unique superlattice structure observed on Au(111) is related to a lower energetic preference for chiral pores than on HOPG and increased diffusion barriers for guest molecules. The increased diffusion barriers for guests allow them to act as nucleation sites for the formation of achiral pores. Following the initial nucleation of an achiral pore, restrictions imposed by the accommodation of guests within the porous network mean that subsequent growth naturally leads to the formation of the superlattice structure.
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Affiliation(s)
- Tatyana Balandina
- Department of Chemistry, Division of Molecular Imaging and Photonics, KU Leuven, Celestijnenlaan 200 F, B-3001 Leuven, Belgium
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40
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Experimental and theoretical studies for corrosion inhibition of carbon steel by imidazoline derivative in 5% NaCl saturated Ca(OH)2 solution. Electrochim Acta 2011. [DOI: 10.1016/j.electacta.2011.09.063] [Citation(s) in RCA: 146] [Impact Index Per Article: 11.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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41
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Kokalj A, Kovačević N, Peljhan S, Finšgar M, Lesar A, Milošev I. Triazole, benzotriazole, and naphthotriazole as copper corrosion inhibitors: I. Molecular electronic and adsorption properties. Chemphyschem 2011; 12:3547-55. [PMID: 22076907 DOI: 10.1002/cphc.201100537] [Citation(s) in RCA: 37] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2011] [Revised: 10/07/2011] [Indexed: 11/12/2022]
Abstract
The gas-phase adsorption of 1,2,3-triazole, benzotriazole, and naphthotriazole-considered as corrosion inhibitors-on copper surfaces was studied and characterized using density functional theory (DFT) calculations. We find that the molecule-surface bond strength increases with increasing molecular size, thus following the sequence: triazole<benzotriazole<naphthotriazole. This trend is explained in terms of molecular electronegativity and chemical hardness, which decrease monotonously as the molecular size increases. While the electronegativity of triazole is almost degenerate with the work function of Cu(111) surface, the electronegativity of larger acenotriazoles is smaller. The difference in electronegativity between the Cu(111) and the acenotriazoles thus increases with increasing the molecular size, which, together with decreasing the molecular hardness, results in larger molecule-to-metal electron charge transfer and stronger molecule-surface bonds.
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Affiliation(s)
- Anton Kokalj
- Department of Physical and Organic Chemistry, Jožef Stefan Institute, Jamova 39, SI-1000 Ljubljana, Slovenia.
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Apodaca DC, Pernites RB, Del Mundo FR, Advincula RC. Detection of 2,4-dinitrotoluene (DNT) as a model system for nitroaromatic compounds via molecularly imprinted short-alkyl-chain SAMs. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2011; 27:6768-6779. [PMID: 21534549 DOI: 10.1021/la105128q] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/30/2023]
Abstract
A 2-D molecularly imprinted monolayer (2-D MIM) approach was used to prepare a simple and robust sensor for nitroaromatic compounds with 2,4-dinitrotoluene (DNT) as the model compound, which is a precursor and analog for explosive 2,4,6-trinitrotoluene (TNT). In contrast to studies utilizing long-chain hexadecylmercaptan self-assembled monolayers (SAM)s for sensing, a shorter-chain alkylthiol (i.e., butanethiol SAM) was utilized for DNT detection. The role of the chain length of the coadsorbed alkylthiol was emphasized with a matched template during solution adsorption. Semiempirical PM3 quantum calculations were used to determine the molecular conformation and complexation of the adsorbates. A switching mechanism was invoked on the basis of the ability of the template analyte to alter the packing arrangement of the alkylthiol SAMs near defect sites as influenced by the DNT-ethanol solvent complex. A 2-D MIM was formed on the Au surface electrode of a quartz crystal microbalance (QCM), which was then used to sense various concentrations of the analyte. Interestingly, the 2-D MIM QCM also enabled the selective detection of DNT even in a mixed solution of competing molecules, demonstrating the selectivity figure of merit. Likewise, electrochemical impedance spectroscopy (EIS) data at different concentrations of DNT confirmed the 2-D MIM effectiveness for sensing based on the interfacial conformation and electron-transport properties of the imprinted butanethiol SAM.
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Affiliation(s)
- Dahlia C Apodaca
- Department of Chemistry, University of Houston, Houston, Texas 77204-5003, United States
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43
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Affiliation(s)
- Jinlong Gong
- Key Laboratory for Green Chemical Technology of Ministry of Education, School of Chemical Engineering and Technology, Tianjin University, Tianjin 300072, China
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44
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Ciesielski A, Samorì P. Supramolecular assembly/reassembly processes: molecular motors and dynamers operating at surfaces. NANOSCALE 2011; 3:1397-1410. [PMID: 21350766 DOI: 10.1039/c0nr00914h] [Citation(s) in RCA: 34] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/30/2023]
Abstract
Among the many significant advances within the field of supramolecular chemistry over the past decades, the development of the so-called "dynamers" features a direct relevance to materials science. Defined as "combinatorial dynamic polymers", dynamers are constitutional dynamic systems and materials resulting from the application of the principles of supramolecular chemistry to polymer science. Like supramolecular materials in general, dynamers are reversible dynamic multifunctional architectures, capable of modifying their constitution by exchanging, recombining, incorporating components. They may exhibit a variety of novel properties and behave as adaptive materials. In this review we focus on the design of responsive switchable monolayers, i.e. monolayers capable to undergo significant changes in their physical or chemical properties as a result of external stimuli. Scanning tunneling microscopy studies provide direct evidence with a sub-nanometre resolution, on the formation and dynamic response of these self-assembled systems featuring controlled geometries and properties.
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Affiliation(s)
- Artur Ciesielski
- Nanochemistry Laboratory, ISIS-CNRS 7006, Université de Strasbourg, 8 allée Gaspard Monge, 67000, Strasbourg, France
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Lang SM, Bernhardt TM. Methane activation and partial oxidation on free gold and palladium clusters: Mechanistic insights into cooperative and highly selective cluster catalysis. Faraday Discuss 2011; 152:337-51; discussion 393-413. [DOI: 10.1039/c1fd00025j] [Citation(s) in RCA: 41] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
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47
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Tahara K, Balandina T, Furukawa S, De Feyter S, Tobe Y. Molecular pentagonal tiling: self-assemblies of pentagonal-shaped macrocycles at liquid/solid interfaces. CrystEngComm 2011. [DOI: 10.1039/c1ce05336a] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
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48
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Lanin SN, Pichugina DA, Shestakov AF, Smirnov VV, Nikolaev SA, Lanina KS, Vasil’kov AY, Zung FT, Beletskaya AV. Hydrocarbon adsorption on gold clusters: Experiment and quantum chemical modeling. RUSSIAN JOURNAL OF PHYSICAL CHEMISTRY A 2010. [DOI: 10.1134/s0036024410120228] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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49
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Chu SN, Sands S, Tomasik MR, Lee PS, McNeill VF. Ozone Oxidation of Surface-Adsorbed Polycyclic Aromatic Hydrocarbons: Role of PAH−Surface Interaction. J Am Chem Soc 2010; 132:15968-75. [DOI: 10.1021/ja1014772] [Citation(s) in RCA: 57] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Sophie N. Chu
- Department of Chemical Engineering, Columbia University, New York, New York 10027, United States
| | - Sophia Sands
- Department of Chemical Engineering, Columbia University, New York, New York 10027, United States
| | - Michelle R. Tomasik
- Department of Chemical Engineering, Columbia University, New York, New York 10027, United States
| | - Paul S. Lee
- Department of Chemical Engineering, Columbia University, New York, New York 10027, United States
| | - V. Faye McNeill
- Department of Chemical Engineering, Columbia University, New York, New York 10027, United States
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Ciesielski A, Palma CA, Bonini M, Samorì P. Towards supramolecular engineering of functional nanomaterials: pre-programming multi-component 2D self-assembly at solid-liquid interfaces. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2010; 22:3506-3520. [PMID: 20626011 DOI: 10.1002/adma.201001582] [Citation(s) in RCA: 217] [Impact Index Per Article: 15.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/29/2023]
Abstract
Materials with a pre-programmed order at the supramolecular level can be engineered with a sub-nanometer precision making use of reversible non- covalent interactions. The intrinsic ability of supramolecular materials to recognize and exchange their constituents makes them constitutionally dynamic materials. The tailoring of the materials properties relies on the full control over the self-assembly behavior of molecular modules exposing recognition sites and incorporating functional units. In this review we focus on three classes of weak-interactions to form complex 2D architectures starting from properly designed molecular modules: van der Waals, metallo-ligand and hydrogen bonding. Scanning tunneling microscopy studies will provide evidence with a sub-nanometer resolution, on the formation of responsive multicomponent architectures with controlled geometries and properties. Such endeavor enriches the scientist capability of generating more and more complex smart materials featuring controlled functions and unprecedented properties.
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Affiliation(s)
- Artur Ciesielski
- Nanochemistry Laboratory, ISIS, Université de Strasbourg and CNRS (UMR 7006), 8 allée Gaspard Monge, 67000 Strasbourg, France
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