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Preetha Genesh N, Cui D, Dettmann D, MacLean O, Johal TK, Lunchev AV, Grimsdale AC, Rosei F. Selective Self-Assembly and Modification of Herringbone Reconstructions at a Solid-Liquid Interface of Au(111). J Phys Chem Lett 2023; 14:3057-3062. [PMID: 36946688 DOI: 10.1021/acs.jpclett.3c00222] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/18/2023]
Abstract
The precise control of molecular self-assembly on surfaces presents many opportunities for the creation of complex nanostructures. Within this endeavor, selective patterning by exploiting molecular interactions at the solid-liquid interface would be a beneficial capability. Using scanning tunneling microscopy at the 1,2,4-trichlorobenzene/Au(111) interface, we observed selective self-assembly of 1,3,5-tris(4-methoxyphenyl)benzene (TMPB) molecules in the face-centered cubic (FCC) regions of Au(111). Density functional theory calculations suggest higher adsorption energy of TMPB molecules at FCC regions, explaining the preference for self-assembly. The molecular coverage is found to increase with the concentration of the applied solution, eventually yielding a full monolayer. Moreover, the adsorption of TMPB molecules induces a concentration-dependent lifting of the herringbone reconstruction, observed as an increase in the area of the FCC regions at higher concentrations. Our results represent a simple and cost-effective selective nanoscale patterning method on Au(111), providing a possible avenue to guide the co-adsorption of other functional molecules.
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Affiliation(s)
- Navathej Preetha Genesh
- Centre Énergie, Matériaux et Télécommunications, Institut National de la Recherche Scientifique, 1650 Boulevard Lionel-Boulet, Varennes, Québec J3X 1P7, Canada
| | - Daling Cui
- Centre Énergie, Matériaux et Télécommunications, Institut National de la Recherche Scientifique, 1650 Boulevard Lionel-Boulet, Varennes, Québec J3X 1P7, Canada
- Department of Chemistry, McGill University, 801 Sherbrooke Street West, Montreal, Québec H3A 0B8, Canada
| | - Dominik Dettmann
- Centre Énergie, Matériaux et Télécommunications, Institut National de la Recherche Scientifique, 1650 Boulevard Lionel-Boulet, Varennes, Québec J3X 1P7, Canada
- Istituto di Struttura della Materia, Consiglio Nazionale delle Ricerche, Via Fosso del Cavaliere 100, 00133 Roma, Italy
| | - Oliver MacLean
- Centre Énergie, Matériaux et Télécommunications, Institut National de la Recherche Scientifique, 1650 Boulevard Lionel-Boulet, Varennes, Québec J3X 1P7, Canada
- Key Laboratory of Functional Materials Physics and Chemistry of the Ministry of Education, Jilin Normal University, Changchun, Jilin 130103, People's Republic of China
| | - Tarnjit Kaur Johal
- Centre Énergie, Matériaux et Télécommunications, Institut National de la Recherche Scientifique, 1650 Boulevard Lionel-Boulet, Varennes, Québec J3X 1P7, Canada
| | - Andrey V Lunchev
- School of Materials Science and Engineering, Nanyang Technological University, Block N4.1, 50 Nanyang Avenue, Singapore 639798, Singapore
| | - Andrew C Grimsdale
- School of Materials Science and Engineering, Nanyang Technological University, Block N4.1, 50 Nanyang Avenue, Singapore 639798, Singapore
| | - Federico Rosei
- Centre Énergie, Matériaux et Télécommunications, Institut National de la Recherche Scientifique, 1650 Boulevard Lionel-Boulet, Varennes, Québec J3X 1P7, Canada
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Rossi L, Huck‐Iriart C, Giovanetti L, Antonel PS, Marceca E, Cukiernik FD. Mesogenic Coordination Polymers Based on Ru
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(II,II)‐Paddle‐Wheel Units Exhibit High Electrical Conductivity. Eur J Inorg Chem 2021. [DOI: 10.1002/ejic.202100766] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Leonardo Rossi
- Universidad de Buenos Aires Facultad de Ciencias Exactas y Naturales Departamento de Química Inorgánica, Analítica y Química Física and CONICET Universidad de Buenos Aires Instituto de Química Física de los Materiales, Medio Ambiente y Energía (INQUIMAE) Pabellón II, Cdad. Universitaria, Nuñez Buenos Aires C1428EGA Argentina
| | - Cristian Huck‐Iriart
- Current adress: Instituto de Tecnologías Emergentes y Ciencias Aplicadas (ITECA) UNSAM-CONICET Escuela de Ciencia y Tecnología (ECyT) Laboratorio de Cristalografía Aplicada (LCA) Campus Miguelete 1650) San Martín Buenos Aires Argentina
| | - Lisandro Giovanetti
- Instituto de Investigaciones Fisicoquímicas Teóricas y Aplicadas (INIFTA) Facultad de Ciencias Exactas Universidad Nacional de la Plata CONICET Casilla de correo 16, sucursal 4 1900 La Plata Argentina
| | - P. Soledad Antonel
- Universidad de Buenos Aires Facultad de Ciencias Exactas y Naturales Departamento de Química Inorgánica, Analítica y Química Física and CONICET Universidad de Buenos Aires Instituto de Química Física de los Materiales, Medio Ambiente y Energía (INQUIMAE) Pabellón II, Cdad. Universitaria, Nuñez Buenos Aires C1428EGA Argentina
| | - Ernesto Marceca
- Universidad de Buenos Aires Facultad de Ciencias Exactas y Naturales Departamento de Química Inorgánica, Analítica y Química Física and CONICET Universidad de Buenos Aires Instituto de Química Física de los Materiales, Medio Ambiente y Energía (INQUIMAE) Pabellón II, Cdad. Universitaria, Nuñez Buenos Aires C1428EGA Argentina
| | - Fabio D. Cukiernik
- Universidad de Buenos Aires Facultad de Ciencias Exactas y Naturales Departamento de Química Inorgánica, Analítica y Química Física and CONICET Universidad de Buenos Aires Instituto de Química Física de los Materiales, Medio Ambiente y Energía (INQUIMAE) Pabellón II, Cdad. Universitaria, Nuñez Buenos Aires C1428EGA Argentina
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Mahrholdt J, Kovalski E, Korb M, Hildebrandt A, Vrček V, Lang H. Ferrocene‐Fused Acenequinones: Synthesis, Structure and Reaction Chemistry. Eur J Inorg Chem 2020. [DOI: 10.1002/ejic.202000956] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Julia Mahrholdt
- Technische Universität Chemnitz Fakultät für Naturwissenschaften, Institut für Chemie, Anorganische Chemie 09107 Chemnitz Germany
| | - Eduard Kovalski
- Technische Universität Chemnitz Fakultät für Naturwissenschaften, Institut für Chemie, Anorganische Chemie 09107 Chemnitz Germany
| | - Marcus Korb
- The University of Western Australia Faculty of Science, School of Molecular Science 6009 Perth Australia
| | - Alexander Hildebrandt
- Technische Universität Chemnitz Fakultät für Naturwissenschaften, Institut für Chemie, Anorganische Chemie 09107 Chemnitz Germany
| | - Valerije Vrček
- University of Zagreb Faculty of Pharmacy and Biochemistry, Department of Organic Chemistry 10000 Zagreb Croatia
| | - Heinrich Lang
- Technische Universität Chemnitz Fakultät für Naturwissenschaften, Institut für Chemie, Anorganische Chemie 09107 Chemnitz Germany
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Atalay H, Çeli̇k A, Ayaz F. Investigation of genotoxic and apoptotic effects of zirconium oxide nanoparticles (20 nm) on L929 mouse fibroblast cell line. Chem Biol Interact 2018; 296:98-104. [DOI: 10.1016/j.cbi.2018.09.017] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2018] [Revised: 09/18/2018] [Accepted: 09/27/2018] [Indexed: 11/28/2022]
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5
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Rezaeian K, Khanmohammadi H, Gholizadeh Dogaheh S. Studies on a multifunctional chromo-fluorogenic sensor for dual channel recognition of Zn2+ and CN− ions in aqueous media: mimicking multiple molecular logic gates and memory devices. NEW J CHEM 2018. [DOI: 10.1039/c7nj04216g] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A new effectual naphthalene-based azomethine receptor has been systematically designed and synthesized as a selective colorimetric and fluorescent chemosensor for dual channel detection of cations and anions in aqueous environments.
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Affiliation(s)
- Khatereh Rezaeian
- Department of Chemistry
- Faculty of Science
- Arak University
- Arak 38156 8 8349
- Iran
| | - Hamid Khanmohammadi
- Department of Chemistry
- Faculty of Science
- Arak University
- Arak 38156 8 8349
- Iran
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Sangermano M, Buzzerio G, Rizzoli R, Ortolani L, Morandi V, Pirri F, Chiolerio A. Enhanced Performance of Graphene-Epoxy Flexible Capacitors by Means of Ceramic Fillers. MACROMOL CHEM PHYS 2015. [DOI: 10.1002/macp.201400588] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Marco Sangermano
- Politecnico di Torino; Dipartimento di Scienza Applicata e Tecnologia; C.so Duca degli Abruzzi 24 10129 Torino Italy
| | - Gianfranco Buzzerio
- Politecnico di Torino; Dipartimento di Scienza Applicata e Tecnologia; C.so Duca degli Abruzzi 24 10129 Torino Italy
| | - Rita Rizzoli
- CNR-IMM Sezione di Bologna; via Gobetti 101 40129 Bologna Italy
| | - Luca Ortolani
- CNR-IMM Sezione di Bologna; via Gobetti 101 40129 Bologna Italy
| | | | - Fabrizio Pirri
- Politecnico di Torino; Dipartimento di Scienza Applicata e Tecnologia; C.so Duca degli Abruzzi 24 10129 Torino Italy
- Center for Space Human Robotics; Istituto Italiano di Tecnologia; Corso Trento 21 10129 Torino Italy
| | - Alessandro Chiolerio
- Center for Space Human Robotics; Istituto Italiano di Tecnologia; Corso Trento 21 10129 Torino Italy
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Rezaeian K, Khanmohammadi H. Two and three input molecular logic operations mediated by a novel azo-azomethine based chromogenic probe through intramolecular charge transfer processes. NEW J CHEM 2015. [DOI: 10.1039/c4nj01723d] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A novel azo-azomethine based chromogenic receptor has been successfully designed and synthesized for the construction of multifunctional molecular logic circuits.
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Affiliation(s)
- Khatereh Rezaeian
- Department of Chemistry
- Faculty of Science
- Arak University
- Arak 38156 8 8349
- Iran
| | - Hamid Khanmohammadi
- Department of Chemistry
- Faculty of Science
- Arak University
- Arak 38156 8 8349
- Iran
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FARMANZADEH DAVOOD, ASHTIANI ZEINAB. MANIPULATING PERFORMANCE OF A MOLECULAR WIRE WITH CHEMICAL MODIFICATION AND EXTERNAL ELECTRIC FIELD. JOURNAL OF THEORETICAL & COMPUTATIONAL CHEMISTRY 2013. [DOI: 10.1142/s0219633613500405] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Abstract
In this work, a detailed theoretical investigation of the substituent groups effect on the geometric and electronic properties of the newly proposed molecular wire has been performed with the DFT-B3LYP/6-31G* level of theory by considering the influence from the external electric field (EF). The results show that the performance of molecular wire is very sensitive to the electron donating (– NH2 and – OH ), electron withdrawing (– NO2 and – F ) groups and external EF intensities. The energy gap between the highest occupied molecular orbital (HOMO) and the lowest unoccupied molecular orbital (LUMO), ELUMO–EHOMO (HLG) in all cases decreased, furthermore, the electron withdrawing – NO2 group had a much lower HLG than the other substituted groups. Results of this study indicate that the substitutions and external electric field can be used to tune the properties of a molecular scale device effectively.
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Affiliation(s)
- DAVOOD FARMANZADEH
- Department of Physical Chemistry, Faculty of Chemistry, University of Mazandaran, P. O. Box 453, Babolsar, I. R. Iran
| | - ZEINAB ASHTIANI
- Department of Physical Chemistry, Faculty of Chemistry, University of Mazandaran, P. O. Box 453, Babolsar, I. R. Iran
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9
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Deng J, Liu M, Lin F, Zhang Y, Liu Y, Yao S. Self-assembled oligo(phenylene ethynylene)s/graphene nanocomposite with improved electrochemical performances for dopamine determination. Anal Chim Acta 2013; 767:59-65. [PMID: 23452787 DOI: 10.1016/j.aca.2012.12.051] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2012] [Revised: 12/28/2012] [Accepted: 12/31/2012] [Indexed: 12/01/2022]
Abstract
In this work, a novel 1,4-bis (4- aminophenylethynyl)benzene (OPE-NH2, a symmetric linear conjugated oligo(phenylene ethynylene)s derive) and chemically-reduced graphene oxide (rGO) nanocomposite (OPE-NH2/rGO) was synthesized by a simple self-assembly method. The OPE-NH2/rGO nanocomposite was stable and water soluble. The formation of OPE-NH2/rGO nanocomposite was ascribed to the π-π stacking interaction between the conjugated structure of OPE-NH2 and rGO as well as the electrostatic force between the amino group of OPE-NH2 and the carboxyl group on rGO, which was characterized by FT-IR, UV-vis spectra and fluorescence spectra. The OPE-NH2/rGO nanocomposite exhibited significantly improved electrocatalytic activity to the oxidization of dopamine (DA) than that of rGO or OPE-NH2. The electrochemical performances of OPE-NH2/rGO were dependent on the OPE-NH2 contents, and OPE-NH2 content of 5wt% exhibited the highest activity. Compared with that of rGO, the nanocomposite presented superior high sensitivity with detection limit of 5nM, excellent selectivity, wide linear range (0.01-60μM) and good stability on the determination of DA. The practical application of the developed OPE-NH2/rGO nanocomposite modified electrode was successfully demonstrated for DA determination in human serum samples.
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Affiliation(s)
- Jianhui Deng
- Key Laboratory of Chemical Biology and Traditional Chinese Medicine Research (Ministry of Education), College of Chemistry and Chemical Engineering, Hunan Normal University, Changsha 410081, China
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Abstract
Bionanocomposites are a novel class of nanosized materials. They contain the constituent of biological origin and particles with at least one dimension in the range of 1–100 nm. There are similarities with nanocomposites but also fundamental differences in the methods of preparation, properties, functionalities, biodegradability, biocompatibility, and applications. The article includes two parts. Bionanocomposite definition and classification along with nanoparticles, biomaterials, and methods of their preparation are initially reviewed. Then, novel approaches developed by our team are presented. The first approach concerns the preparation of bionanocomposites from chitosan and nanoparticles. It is based on the regulated charging of polysaccharide by the gradual shift of solution pH. When charges appear, the biomacromolecules come into the electrostatic interactions with negatively charged nanoparticles that cause the jellification of solutions. It is also applied to form films. They have a nacre-like structure from stacked planar nanoparticles separated by aligned biomacromolecules. The second approach deals with the biomimicking mineralization of biopolymers by using a novel silica precursor. Its advantage over the current sol-gel processing is in the compatibility and regulation of processes and structure of generated silica. Another example of the mineralization is presented by titania. Syntheses are performed in anhydrous ethylene glycol. Processes and structure of bionanocomposites are regulated by water that is added in an amount to only hydrate functional groups in the carbohydrate macromolecule.
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Affiliation(s)
- Yury Shchipunov
- 1Institute of Chemistry, Far East Department, Russian Academy of Sciences, 690022 Vladivostok, Russia; The WCU Center for Synthetic Polymer Bioconjugate Hybrid Materials, Department of Polymer Science and Engineering, Pusan National University, San 30, Jangjun Dong, Geumjung Gu, Busan, 609-735 Korea
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11
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Frasca S, Richter C, von Graberg T, Smarsly BM, Wollenberger U. Electrochemical switchable protein-based optical device. Eng Life Sci 2011. [DOI: 10.1002/elsc.201100079] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022] Open
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12
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Katz E. Processing electrochemical signals at both sides of interface: electronic vs. chemical signal processing. J Solid State Electrochem 2011. [DOI: 10.1007/s10008-011-1300-4] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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13
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14
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15
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Luo J, Liu M, Zhao Q, Zhao J, Zhang Y, Tan L, Tang H, Xie Q, Li H, Yao S. A study on the electro-oxidation and electropolymerization of a new OPE linear molecule by EQCM and in situ FTIR spectroelectrochemistry. Electrochim Acta 2010. [DOI: 10.1016/j.electacta.2010.09.026] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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16
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Halámek J, Bocharova V, Chinnapareddy S, Windmiller JR, Strack G, Chuang MC, Zhou J, Santhosh P, Ramirez GV, Arugula MA, Wang J, Katz E. Multi-enzyme logic network architectures for assessing injuries: digital processing of biomarkers. MOLECULAR BIOSYSTEMS 2010; 6:2554-60. [PMID: 20953502 DOI: 10.1039/c0mb00153h] [Citation(s) in RCA: 71] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
Abstract
A multi-enzyme biocatalytic cascade processing simultaneously five biomarkers characteristic of traumatic brain injury (TBI) and soft tissue injury (STI) was developed. The system operates as a digital biosensor based on concerted function of 8 Boolean AND logic gates, resulting in the decision about the physiological conditions based on the logic analysis of complex patterns of the biomarkers. The system represents the first example of a multi-step/multi-enzyme biosensor with the built-in logic for the analysis of complex combinations of biochemical inputs. The approach is based on recent advances in enzyme-based biocomputing systems and the present paper demonstrates the potential applicability of biocomputing for developing novel digital biosensor networks.
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Affiliation(s)
- Jan Halámek
- Department of Chemistry and Biomolecular Science, Clarkson University, Potsdam, NY 13699-5810, USA
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Matena M, Stöhr M, Riehm T, Björk J, Martens S, Dyer M, Persson M, Lobo-Checa J, Müller K, Enache M, Wadepohl H, Zegenhagen J, Jung T, Gade L. Aggregation and Contingent Metal/Surface Reactivity of 1,3,8,10-Tetraazaperopyrene (TAPP) on Cu(111). Chemistry 2010; 16:2079-91. [DOI: 10.1002/chem.200902596] [Citation(s) in RCA: 86] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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Björk J, Matena M, Dyer MS, Enache M, Lobo-Checa J, Gade LH, Jung TA, Stöhr M, Persson M. STM fingerprint of molecule–adatom interactions in a self-assembled metal–organic surface coordination network on Cu(111). Phys Chem Chem Phys 2010; 12:8815-21. [DOI: 10.1039/c003660a] [Citation(s) in RCA: 62] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Affiliation(s)
- Akira Harada
- Department of Macromolecular Science, Graduate School of Science, Osaka University, 1-1 Machikaneyama-cho, Toyonaka, Osaka 560-0043, Japan
| | - Akihito Hashidzume
- Department of Macromolecular Science, Graduate School of Science, Osaka University, 1-1 Machikaneyama-cho, Toyonaka, Osaka 560-0043, Japan
| | - Hiroyasu Yamaguchi
- Department of Macromolecular Science, Graduate School of Science, Osaka University, 1-1 Machikaneyama-cho, Toyonaka, Osaka 560-0043, Japan
| | - Yoshinori Takashima
- Department of Macromolecular Science, Graduate School of Science, Osaka University, 1-1 Machikaneyama-cho, Toyonaka, Osaka 560-0043, Japan
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Li Y, Yao J, Yang C, Zhong S, Yin G. Ab initioinvestigations on the geometric and electronic structures of a diblock molecular diode under the influence of an external bias. MOLECULAR SIMULATION 2009. [DOI: 10.1080/08927020802468356] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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Ling QD, Liaw DJ, Zhu C, Chan DSH, Kang ET, Neoh KG. Polymer electronic memories: Materials, devices and mechanisms. Prog Polym Sci 2008. [DOI: 10.1016/j.progpolymsci.2008.08.001] [Citation(s) in RCA: 864] [Impact Index Per Article: 54.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
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Affiliation(s)
- Konrad Szaciłowski
- Uniwersytet Jagielloński, Wydział Chemii, ul. Romana Ingardena 3, 30-060 Kraków, Poland
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Wang Y, Alcamí M, Martín F. Understanding the Supramolecular Self-Assembly of the Fullerene Derivative PCBM on Gold Surfaces. Chemphyschem 2008; 9:1030-5. [DOI: 10.1002/cphc.200700725] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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25
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Szaciłowski K. Biomedical implications of information processing in chemical systems: Non-classical approach to photochemistry of coordination compounds. Biosystems 2007; 90:738-49. [PMID: 17451872 DOI: 10.1016/j.biosystems.2007.03.002] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2006] [Revised: 03/01/2007] [Accepted: 03/19/2007] [Indexed: 11/29/2022]
Abstract
Analogies between photoactive nitric oxide generators and various electronic devices: logic gates and operational amplifiers are presented. These analogies have important biological consequences: application of control parameters allows for better targeting and control of nitric oxide drugs. The same methodology may be applied in the future for other therapeutic strategies and at the same time helps to understand natural regulatory and signaling processes in biological systems.
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Affiliation(s)
- Konrad Szaciłowski
- Center for Inorganic Nanochemistry, Faculty of Chemistry, Jagiellonian University, Ingardena 3, 30-60 Kraków, Poland.
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Écija D, Otero R, Sánchez L, Gallego J, Wang Y, Alcamí M, Martín F, Martín N, Miranda R. Crossover Site-Selectivity in the Adsorption of the Fullerene Derivative PCBM on Au(111). Angew Chem Int Ed Engl 2007. [DOI: 10.1002/ange.200702531] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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27
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Ecija D, Otero R, Sánchez L, Gallego JM, Wang Y, Alcamí M, Martín F, Martín N, Miranda R. Crossover Site-Selectivity in the Adsorption of the Fullerene Derivative PCBM on Au(111). Angew Chem Int Ed Engl 2007; 46:7874-7. [PMID: 17828724 DOI: 10.1002/anie.200702531] [Citation(s) in RCA: 64] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- David Ecija
- Departamento de Física de la Materia Condensada, Universidad Autónoma de Madrid, Cantoblanco, 28049 Madrid, Spain
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Weis M, Janícek R, Cirak J, Hianik T. Study of the Calix[4]resorcinarene−Dopamine Interactions in Monolayers by Measurement of Pressure−Area Isotherms and Maxwell Displacement Currents. J Phys Chem B 2007; 111:10626-31. [PMID: 17696528 DOI: 10.1021/jp0741051] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
The mechanisms of interactions between calix[4]resorcinarene and dopamine in monolayers formed at the air-water interface were studied by analyzing their mechanical, thermodynamic, and electrical properties evaluated from measurements of pressure-area isotherms and Maxwell displacement currents (MDCs). An increased concentration of dopamine in the water subphase resulted in an increase in the area per calix[4]resorcinarene molecule, an increase in the collapse pressure, and a shift in the monolayer phase transitions from the gaseous to the liquid state and from the liquid to the solid state toward higher molecular areas. A contactless method of recording MDCs enabled the monitoring of changes in the charge state of the monolayer-constituting molecules and the determination of a relationship between the phase state of the monolayer and the structural transitions of calix[4]resorcinarene. The changes of the MDC recordings started already in the gaseous state of the monolayer. On the basis of MDC values, we determined the normal component of the dipole moment of calix[4]resorcinarene, as well as that of its complex with dopamine. The dipole moment reached a maximum value of 1040 mD in the region of the phase transition from the liquid to the solid state of the monolayer. The results obtained suggest that the binding of dopamine with calix[4]resorcinarene depends on the orientation of the calixarene molecules in the monolayer. The calix[4]resorcinarene-dopamine interactions were also quantified in terms of the excess of Gibbs free energy, thereby allowing the evaluation of the energy of the calix [4]resorcinarene-dopamine bond, which was in the range from 1.95 to 8.54 kJ/mol depending on the surface pressure. This value implies weak interactions between these molecules.
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Affiliation(s)
- Martin Weis
- Department of Physics, Faculty of Electrical Engineering and Information Technology, Slovak University of Technology, 812 19 Bratislava, Slovak Republic.
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Ling QD, Liaw DJ, Teo EYH, Zhu C, Chan DSH, Kang ET, Neoh KG. Polymer memories: Bistable electrical switching and device performance. POLYMER 2007. [DOI: 10.1016/j.polymer.2007.06.025] [Citation(s) in RCA: 200] [Impact Index Per Article: 11.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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Cho SH, Park SM. Electrochemistry of Conductive Polymers 39. Contacts between Conducting Polymers and Noble Metal Nanoparticles Studied by Current-Sensing Atomic Force Microscopy. J Phys Chem B 2006; 110:25656-64. [PMID: 17181203 DOI: 10.1021/jp0656781] [Citation(s) in RCA: 47] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Electrical properties of contacts formed between conducting polymers and noble metal nanoparticles have been examined using current-sensing atomic force microscopy (CS-AFM). Contacts formed between electrochemically prepared pi-conjugated polymer films such as polypyrrole (PPy), poly(3-methylthiophene) (P3MeT), as well as poly(3,4-ethylenedioxythiophene) (PEDOT) and noble metal nanoparticles including platinum (Pt), gold (Au), and silver (Ag) have been examined. The Pt nanoparticles were electrochemically deposited on a pre-coated PPy film surface by reducing a platinum precursor (PtCl62-) at a constant potential. Both current and scanning electron microscopic images of the film showed the presence of Pt islands. The Au and Ag nanoparticles were dispersed on the P3MeT and PEDOT film surfaces simply by dipping the polymer films into colloid solutions containing Au or Ag particles for specified periods (5 to approximately 10 min). The deposition of Au or Ag particles resulted from either their physical adsorption or chemical bonding between particles and the polymer surface depending on the polymer. When compared with PPy, P3MeT and PEDOT showed a stronger binding to Au or Ag nanoparticles when dipped in their colloidal solutions for the same period. This indicates that Au and Ag particles are predominantly linked with the sulfur atoms via chemical bonding. Of the two, PEDOT was more conductive at the sites where the particles are connected to the polymer. It appears that PEDOT has better aligned sulfur atoms on the surface and is strongly bonded to Au and Ag nanoparticles due to their strong affinity to gold and silver. The current-voltage curves obtained at the metal islands demonstrate that the contacts between these metal islands and polymers are ohmic.
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Affiliation(s)
- Shin Hyo Cho
- Department of Chemistry and Center for Integrated Molecular Systems, Pohang University of Science and Technology, Pohang, Gyeongbuk 790-784, Republic of Korea
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Hunyadi SE, Murphy CJ. Tunable One-Dimensional Silver−Silica Nanopeapod Architectures. J Phys Chem B 2006; 110:7226-31. [PMID: 16599491 DOI: 10.1021/jp0603076] [Citation(s) in RCA: 48] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Silica-coated silver nanowires can be chemically treated to produce a "peapod" architecture in which silver peas are embedded in silica pods. The silver "pea" dimension and interparticle spacings are controllable down to approximately 50 nm. This architecture is potentially useful for chemical sensing, plasmonic, or catalytic applications.
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Affiliation(s)
- Simona E Hunyadi
- Department of Chemistry and Biochemistry, University of South Carolina, 631 Sumter Street, Columbia, South Carolina 29208, USA
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Jin Y, Lah MS. Polymorphism Driven by π-π Stacking and van der Waals Interactions: Preparation and Characterization of Polymorphic Vanadium Crystals of [VVO(Hacshz)(OEt)] and [VIV(Hacshz)2]. Eur J Inorg Chem 2005. [DOI: 10.1002/ejic.200500222] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
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Bochenkov VE, Sergeev GB. Preparation and chemiresistive properties of nanostructured materials. Adv Colloid Interface Sci 2005; 116:245-54. [PMID: 16242109 DOI: 10.1016/j.cis.2005.05.004] [Citation(s) in RCA: 40] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2005] [Accepted: 05/30/2005] [Indexed: 10/25/2022]
Affiliation(s)
- V E Bochenkov
- Department of Chemistry, Lomonosov Moscow State University, 119992 Moscow, Russia
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Katz E, Baron R, Willner I, Richke N, Levine RD. Temperature-Dependent and Friction-Controlled Electrochemically Induced Shuttling Along Molecular Strings Associated with Electrodes. Chemphyschem 2005; 6:2179-89. [PMID: 16208742 DOI: 10.1002/cphc.200500162] [Citation(s) in RCA: 34] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
The temperature and solvent composition dependence of the electrochemically stimulated rate of shuttling of the redox-active cyclophane, cyclobis(paraquat-p-phenylene), on a molecular string has been studied. The molecular string includes a pi-donor diiminebenzene-site that is associated on one side with an electrode, and stoppered on the other side with an adamantane unit. The cyclophane rests on the pi-donor site, owing to stabilizing pi-donor-acceptor interactions. Electrochemical reduction of the cyclophane units, to the bis-radical cation cyclophane, results in the shuttling of the reduced cyclophane towards the electrode, a process that is driven by the removal of the stabilizing donor-acceptor interactions, and the electrostatic attraction of the reduced product by the electrode. The latter process is energetically downhill, and is temperature-independent. Upon oxidation of the reduced cyclophane that is associated with the electrode, the energetically uphill shuttling of the oxidized cyclophane to the pi-donor site proceeds. The rate of this translocation process has been found to be temperature-dependent, and controlled by the solvent composition. The experimental results have been theoretically analyzed in terms of Kramers' molecular friction model. The theoretical fitting of the experimental results, using solutions of variable composition, reveals that the rate-constants for the uphill reaction in a pure aqueous solution follow the temperature-dependence of the viscosity of water. The results demonstrate the significance of friction phenomena in shuttling processes within molecular machines.
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Affiliation(s)
- Eugenii Katz
- Institute of Chemistry, The Hebrew University of Jerusalem, Jerusalem 91904, Israel
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Abdel-Mottaleb MMS, Gomar-Nadal E, Surin M, Uji-i H, Mamdouh W, Veciana J, Lemaur V, Rovira C, Cornil J, Lazzaroni R, Amabilino DB, De Feyter S, De Schryver FC. Self-assembly of tetrathiafulvalene derivatives at a liquid/solid interface—compositional and constitutional influence on supramolecular ordering. ACTA ACUST UNITED AC 2005. [DOI: 10.1039/b509336h] [Citation(s) in RCA: 57] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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