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Park T, Kang H, Ito E, Noh J. Self‐Assembled Monolayers of Alkanethioacetates on Au(111) in Ammonium Hydroxide Solution. B KOREAN CHEM SOC 2020. [DOI: 10.1002/bkcs.12189] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Taesung Park
- Department of Chemistry Hanyang University Seongdong‐gu, Seoul 04763 Korea
| | - Hungu Kang
- Department of Chemistry Hanyang University Seongdong‐gu, Seoul 04763 Korea
| | - Eisuke Ito
- Chemical Materials Evaluation and Research Base (CEREBA) Higashi 1‐1‐1, AIST Central 5‐2, Tsukuba, Ibaraki 305‐8565 Japan
| | - Jaegeun Noh
- Department of Chemistry Hanyang University Seongdong‐gu, Seoul 04763 Korea
- Institute of Nano Science and Technology Hanyang University Seongdong‐gu, Seoul 04763 Korea
- Research Institute for Convergence of Basic Science Hanyang University Seongdong‐gu, Seoul 04763 Korea
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2
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Malytskyi V, Gadenne V, Ksari Y, Patrone L, Raimundo JM. Synthesis and characterization of thiophene-based push-pull chromophores for tuning the electrical and optical properties of surfaces with controlled SAM formation. Tetrahedron 2017. [DOI: 10.1016/j.tet.2017.08.004] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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3
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Liang J, Smith RE, Vezzoli A, Xie L, Milan DC, Davidson R, Beeby A, Low PJ, Higgins SJ, Mao B, Nichols RJ. Electrochemically grafted single molecule junctions exploiting a chemical protection strategy. Electrochim Acta 2016. [DOI: 10.1016/j.electacta.2016.10.095] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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4
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Wiebalck S, Kozuch J, Forbrig E, Tzschucke CC, Jeuken LJC, Hildebrandt P. Monitoring the Transmembrane Proton Gradient Generated by Cytochrome bo3 in Tethered Bilayer Lipid Membranes Using SEIRA Spectroscopy. J Phys Chem B 2016; 120:2249-56. [DOI: 10.1021/acs.jpcb.6b01435] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Swantje Wiebalck
- Institut
für Chemie und Biochemie, Freie Universität Berlin, Takustr. 3, D-14195 Berlin, Germany
| | - Jacek Kozuch
- Institut
für Chemie, Technische Universität Berlin, Straße des
17. Juni 135, D-10623 Berlin, Germany
| | - Enrico Forbrig
- Institut
für Chemie, Technische Universität Berlin, Straße des
17. Juni 135, D-10623 Berlin, Germany
| | - C. Christoph Tzschucke
- Institut
für Chemie und Biochemie, Freie Universität Berlin, Takustr. 3, D-14195 Berlin, Germany
| | - Lars J. C. Jeuken
- School of Biomedical Sciences, the Astbury Centre for Structural Molecular Biology, and School of Physics & Astronomy, University of Leeds, Leeds LS2 9JT, United Kingdom
| | - Peter Hildebrandt
- Institut
für Chemie, Technische Universität Berlin, Straße des
17. Juni 135, D-10623 Berlin, Germany
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5
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Niebel C, Calard F, Jarrosson T, Lère-Porte JP, Breton T, Serein-Spirau F. Spontaneous assembly of silylethane-thiol derivatives on Au(111): a chemically robust thiol protecting group as the precursor for the direct formation of aromatic gold thiolate monolayers. Chem Commun (Camb) 2015; 51:7622-5. [PMID: 25848655 DOI: 10.1039/c5cc00600g] [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
Self-assembled monolayers (SAMs) on gold were obtained by the direct absorption of a fully conjugated phenylenethienylene derivative () presenting robust silylethane-thiol protecting groups as anchoring agents. The thiol deprotection and SAM formation have been evidenced by quartz crystal microbalance (QCM) measurements and X-ray photoelectron spectroscopy (XPS), and have been compared to the SAM obtained from its thioacetate analog (5). The chemically robust silylethane-thiol protecting group appeared as a surprisingly effective anchoring agent for the preparation of aromatic SAMs on Au(111), suitable for subsequent post-functionalization.
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Affiliation(s)
- Claude Niebel
- Equipe Architectures Moléculaires et Matériaux Nanostructurés, UMR CNRS 5253, Institut Charles Gerhardt, Ecole Nationale Supérieure de Chimie de Montpellier, 8 rue de l'Ecole Normale, 34293 Montpellier Cedex, France.
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6
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Malytskyi V, Simon JJ, Patrone L, Raimundo JM. Synthesis, self-assembly and characterization of a novel push–pull thiophene-based chromophore on a gold surface. RSC Adv 2015. [DOI: 10.1039/c5ra02200b] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
A self-assembled dense monolayer based on a non-charged push–pull chromophore is clearly evidenced by electrochemical, XPS and STM analysis. Associated with good film properties a conducting behavior consistent with the structure of the SAM-organized push–pull is also shown.
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Affiliation(s)
- Volodymyr Malytskyi
- Centre Interdisciplinaire de Nanoscience de Marseille
- Aix-Marseille Université
- CNRS
- CINaM UMR 7325
- 13288 Marseille Cedex 09
| | - Jean-Jacques Simon
- Institut Matériaux Microélectronique Nanosciences de Provence
- Aix-Marseille Université
- CNRS
- Université de Toulon
- IM2NP UMR 7334
| | - Lionel Patrone
- Institut Matériaux Microélectronique Nanosciences de Provence
- Aix-Marseille Université
- CNRS
- Université de Toulon
- IM2NP UMR 7334
| | - Jean-Manuel Raimundo
- Centre Interdisciplinaire de Nanoscience de Marseille
- Aix-Marseille Université
- CNRS
- CINaM UMR 7325
- 13288 Marseille Cedex 09
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7
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Masillamani AM, Osella S, Liscio A, Fenwick O, Reinders F, Mayor M, Palermo V, Cornil J, Samorì P. Light-induced reversible modification of the work function of a new perfluorinated biphenyl azobenzene chemisorbed on Au (111). NANOSCALE 2014; 6:8969-8977. [PMID: 24968023 DOI: 10.1039/c4nr01880j] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
We describe the synthesis of a novel biphenyl azobenzene derivative exhibiting: (i) a protected thiol anchoring group in the α-position to readily form self-assembled monolayers (SAMs) on Au surfaces; and (ii) a terminal perfluorinated benzene ring in the ω-position to modify the surface properties. The design of this molecule ensured both an efficient in situ photoswitching between the trans and cis isomers when chemisorbed on Au(111), due to the presence of a biphenyl bridge between the thiol protected anchoring group and the azo dye, and a significant variation of the work function of the SAM in the two isomeric states, induced by the perfluorinated phenyl head group. By exploiting the light responsive nature of the chemisorbed molecules, it is possible to dynamically modify in situ the work function of the SAM-covered electrode, as demonstrated both experimentally and by quantum-chemical calculations, revealing changes in work function up to 220 meV. These findings are relevant for tuning the work function of metallic electrodes, and hence to dynamically modulate charge injection at metal-semiconductor interfaces for organic opto-electronic applications.
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8
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Rudolph T, Barthel MJ, Kretschmer F, Mansfeld U, Hoeppener S, Hager MD, Schubert US, Schacher FH. Poly(2-vinyl pyridine)-block-Poly(ethylene oxide) Featuring a Furan Group at the Block Junction-Synthesis and Functionalization. Macromol Rapid Commun 2014; 35:916-21. [DOI: 10.1002/marc.201300875] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/27/2013] [Revised: 12/30/2013] [Indexed: 11/10/2022]
Affiliation(s)
- Tobias Rudolph
- Laboratory of Organic and Macromolecular Chemistry; Friedrich Schiller University Jena; Humboldtstr. 10 07743 Jena Germany
- Jena Center for Soft Matter (JCSM); Friedrich Schiller University Jena; Philosophenweg 7 07743 Jena Germany
| | - Markus J. Barthel
- Laboratory of Organic and Macromolecular Chemistry; Friedrich Schiller University Jena; Humboldtstr. 10 07743 Jena Germany
- Jena Center for Soft Matter (JCSM); Friedrich Schiller University Jena; Philosophenweg 7 07743 Jena Germany
- Dutch Polymer Institute; P.O. Box 902 Eindhoven 5600 AX The Netherlands
| | - Florian Kretschmer
- Laboratory of Organic and Macromolecular Chemistry; Friedrich Schiller University Jena; Humboldtstr. 10 07743 Jena Germany
- Jena Center for Soft Matter (JCSM); Friedrich Schiller University Jena; Philosophenweg 7 07743 Jena Germany
| | - Ulrich Mansfeld
- Laboratory of Organic and Macromolecular Chemistry; Friedrich Schiller University Jena; Humboldtstr. 10 07743 Jena Germany
- Jena Center for Soft Matter (JCSM); Friedrich Schiller University Jena; Philosophenweg 7 07743 Jena Germany
| | - Stephanie Hoeppener
- Laboratory of Organic and Macromolecular Chemistry; Friedrich Schiller University Jena; Humboldtstr. 10 07743 Jena Germany
- Jena Center for Soft Matter (JCSM); Friedrich Schiller University Jena; Philosophenweg 7 07743 Jena Germany
| | - Martin D. Hager
- Laboratory of Organic and Macromolecular Chemistry; Friedrich Schiller University Jena; Humboldtstr. 10 07743 Jena Germany
- Jena Center for Soft Matter (JCSM); Friedrich Schiller University Jena; Philosophenweg 7 07743 Jena Germany
| | - Ulrich S. Schubert
- Laboratory of Organic and Macromolecular Chemistry; Friedrich Schiller University Jena; Humboldtstr. 10 07743 Jena Germany
- Jena Center for Soft Matter (JCSM); Friedrich Schiller University Jena; Philosophenweg 7 07743 Jena Germany
- Dutch Polymer Institute; P.O. Box 902 Eindhoven 5600 AX The Netherlands
| | - Felix H. Schacher
- Laboratory of Organic and Macromolecular Chemistry; Friedrich Schiller University Jena; Humboldtstr. 10 07743 Jena Germany
- Jena Center for Soft Matter (JCSM); Friedrich Schiller University Jena; Philosophenweg 7 07743 Jena Germany
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9
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Jethwa SJ, Grillo F, Früchtl HA, Simpson GJ, Treanor MJ, Schaub R, Francis SM, Richardson NV, Aitken RA. Adsorption of a dihydro-TTF derivative on Au(111) via a thiolate complex bonding to gold adatoms. Chem Commun (Camb) 2014; 50:10140-3. [DOI: 10.1039/c4cc04130e] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
Abstract
A dihydro-TTF derivative was adsorbed on Au(111) via four thiolate ligands, it is determined that relatively little charge transfer occurs between the molecule and the substrate.
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10
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11
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On the kinetics and thermodynamics of S–X (X = H, CH3, SCH3, COCH3, and CN) cleavage in the formation of self-assembled monolayers of alkylthiols on Au(111). Theor Chem Acc 2012. [DOI: 10.1007/s00214-012-1150-x] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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12
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Park TS, Kang HG, Kim YY, Lee SK, Noh JG. Direct Adsorption and Molecular Self-Assembly of Octylthioacetates on Au(111) in the Vapor Phase. B KOREAN CHEM SOC 2011. [DOI: 10.5012/bkcs.2011.32.1.39] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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13
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Feng G, Niu T, You X, Wan Z, Kong Q, Bi S. Studies on the effect of electrode pretreatment on the coverage of self-assembled monolayers of dodecanethiol on gold by electrochemical reductive desorption determination. Analyst 2011; 136:5058-63. [DOI: 10.1039/c1an15642j] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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14
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Hain SK, Heinemann FW, Gieb K, Müller P, Hörner G, Grohmann A. On the Spin Behaviour of Iron(II)–Dipyridyltriazine Complexes and Their Performance as Thermal and Photonic Spin Switches. Eur J Inorg Chem 2010. [DOI: 10.1002/ejic.200900588] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Sophie K. Hain
- Institut für Chemie, Technische Universität Berlin, Straße des 17. Juni 135, 10623 Berlin, Germany, Fax: +49‐30‐314‐22935
| | - Frank W. Heinemann
- Department Chemie und Pharmazie, Universität Erlangen‐Nürnberg, Egerlandstraße 1, 91058 Erlangen, Germany
| | - Klaus Gieb
- Department Physik, Universität Erlangen‐Nürnberg, Erwin‐Rommel‐Straße 1, 91058 Erlangen, Germany
| | - Paul Müller
- Department Physik, Universität Erlangen‐Nürnberg, Erwin‐Rommel‐Straße 1, 91058 Erlangen, Germany
| | - Gerald Hörner
- Faculty of Chemistry, Adam Mickiewicz University of Poznań, Grunwaldzka 6, 60‐780 Poznań, Poland, Fax: +48‐61‐829‐1505
| | - Andreas Grohmann
- Institut für Chemie, Technische Universität Berlin, Straße des 17. Juni 135, 10623 Berlin, Germany, Fax: +49‐30‐314‐22935
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15
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Zhang S, Leem G, Lee TR. Monolayer-protected gold nanoparticles prepared using long-chain alkanethioacetates. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2009; 25:13855-13860. [PMID: 19637885 DOI: 10.1021/la901847s] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/28/2023]
Abstract
This letter describes the preparation of monolayer-protected nanoparticle clusters (MPCs) from the adsorption of n-tetradecanethioacetate onto colloidal gold nanoparticles using the Brust-Schiffrin two-phase synthesis method. The MPCs were characterized by transmission electron microscopy (TEM), ultraviolet-visible (UV-vis) spectroscopy, (1)H nuclear magnetic resonance (NMR) spectroscopy, X-ray photoelectron spectroscopy (XPS), and Fourier transform infrared (FTIR) spectroscopy. These studies found that the monolayer coatings on the gold nanoparticles were nearly indistinct with regard to chemical composition, monolayer structure, and Au-S ligation when compared to those prepared from the analogous adsorption of n-tetradecanethiol (i.e., the thioacetate headgroup adsorbs to gold as a thiolate, with concurrent loss of the acetyl group). Under equivalent conditions of formation, however, the size of the gold nanoparticles formed was larger when using the alkanethioacetate adsorbate (e.g., 4.9 +/- 1.2 nm) compared to the alkanethiol adsorbate (e.g., 1.6 +/- 0.3 nm). The observed difference in size is rationalized on the basis of the stronger ligating ability of the thiol compared to that of the thioacetate during gold nanoparticle nucleation and/or growth. The use of alkanethioacetates affords significant control of particle size and allows the formation of MPCs with thiol-sensitive omega-functional groups.
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Affiliation(s)
- Shishan Zhang
- Department of Chemistry, University of Houston, 4800 Calhoun Road, Houston, Texas 77204-5003, USA
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16
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Malicki M, Guan Z, Ha SD, Heimel G, Barlow S, Rumi M, Kahn A, Marder SR. Preparation and characterization of 4'-donor substituted stilbene-4-thiolate monolayers and their influence on the work function of gold. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2009; 25:7967-7975. [PMID: 19419192 DOI: 10.1021/la9004104] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/27/2023]
Abstract
Self-assembled monolayers of E-stilbene-4-thiolate (SAM1), E-4'-(ethoxy)stilbene-4-thiolate (SAM2), and E-4'-(dimethylamino)stilbene-4-thiolate (SAM3) on Au(111) have been obtained from reaction of ethanol solutions of the corresponding S-acetyl derivatives with gold substrates. A combination of X-ray photoelectron spectroscopy, ellipsometry, and infrared reflection absorption spectroscopy indicates that the monolayers are dense (ca. 3.3 x 10(14) molecules/cm(2)) and that the long molecular axes of the thiolates are approximately perpendicular to the surface. Ultraviolet photoelectron spectroscopy shows that formation of these monolayers decreases the work function of pristine Au by 0.9-1.3 eV, in part due to a bond dipole of ca. 4.4 D/molecule formed upon adsorption and partly due to the molecular dipole moment arising from the 4'-pi-donor substituents. However, the extent of the work function variation between SAM1, 2, and 3 is smaller than anticipated from purely electrostatic considerations.
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Affiliation(s)
- Michał Malicki
- School of Chemistry and Biochemistry, Georgia Institute of Technology, Atlanta, GA 30332, USA
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17
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Béthencourt MI, Srisombat LO, Chinwangso P, Lee TR. SAMs on gold derived from the direct adsorption of alkanethioacetates are inferior to those derived from the direct adsorption of alkanethiols. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2009; 25:1265-1271. [PMID: 19123812 DOI: 10.1021/la803179q] [Citation(s) in RCA: 40] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/27/2023]
Abstract
Self-assembled monolayers (SAMs) on gold derived from the direct adsorption of thioacetic acid S-decyl ester (C10SAc) and thioacetic acid S-octadecyl ester (C18SAc) were compared to the corresponding SAMs derived from the analogous adsorption n-decanethiol (C10SH) and n-octadecanethiol (C18SH). All SAMs were characterized using ellipsometry, contact angle goniometry, polarization modulation infrared reflection absorption spectroscopy (PM-IRRAS), and X-ray photoelectron spectroscopy (XPS). The comparison revealed that the SAMs generated from the thioacetates are not as densely packed and well ordered as the SAMs generated from the thiols. Furthermore, studies of the kinetics of adsorption found that the thioacetates adsorb more slowly than the corresponding thiols.
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Affiliation(s)
- Mathilde I Béthencourt
- Department of Chemistry, University of Houston, 4800 Calhoun Rd, Houston, Texas 77204-5003, USA
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18
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Shen C, Buck M, Wilton-Ely JDET, Weidner T, Zharnikov M. On the importance of purity for the formation of self-assembled monolayers from thiocyanates. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2008; 24:6609-6615. [PMID: 18503286 DOI: 10.1021/la8004272] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/26/2023]
Abstract
Assembly of dodecyl thiocyanate (C12SCN) from ethanol solution onto Au(111)/mica substrates was investigated by scanning tunneling microscopy (STM), near edge X-ray absorption fine structure spectroscopy (NEXAFS), X-ray photoelectron spectroscopy (XPS), and infrared reflection-absorption spectroscopy (IRRAS). Contrary to previous reports, thiolate monolayers formed by cleavage of the S-CN bond can be obtained whose quality is at least as good as that of self-assembled monolayers (SAMs) formed directly from the thiol analogue of C12SCN, dodecanethiol (C12SH). However, the achievable quality is strikingly dependent on the purity of the thiocyanate with even low levels of contamination impeding the formation of structurally well-defined monolayers.
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Affiliation(s)
- Cai Shen
- EaStCHEM School of Chemistry, University of St. Andrews, St. Andrews KY16 9ST, United Kingdom
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19
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Crivillers N, Mas-Torrent M, Vidal-Gancedo J, Veciana J, Rovira C. Self-Assembled Monolayers of Electroactive Polychlorotriphenylmethyl Radicals on Au(111). J Am Chem Soc 2008; 130:5499-506. [DOI: 10.1021/ja710845v] [Citation(s) in RCA: 61] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Affiliation(s)
- Núria Crivillers
- Institut de Ciència de Materials de Barcelona (CSIC) and Networking Research Center on Bioengineering, Biomaterials and Nanomedicine (CIBER-BBN), Campus Universitari de Bellaterra, 08193 Cerdanyola del Vallès, Spain
| | - Marta Mas-Torrent
- Institut de Ciència de Materials de Barcelona (CSIC) and Networking Research Center on Bioengineering, Biomaterials and Nanomedicine (CIBER-BBN), Campus Universitari de Bellaterra, 08193 Cerdanyola del Vallès, Spain
| | - José Vidal-Gancedo
- Institut de Ciència de Materials de Barcelona (CSIC) and Networking Research Center on Bioengineering, Biomaterials and Nanomedicine (CIBER-BBN), Campus Universitari de Bellaterra, 08193 Cerdanyola del Vallès, Spain
| | - Jaume Veciana
- Institut de Ciència de Materials de Barcelona (CSIC) and Networking Research Center on Bioengineering, Biomaterials and Nanomedicine (CIBER-BBN), Campus Universitari de Bellaterra, 08193 Cerdanyola del Vallès, Spain
| | - Concepció Rovira
- Institut de Ciència de Materials de Barcelona (CSIC) and Networking Research Center on Bioengineering, Biomaterials and Nanomedicine (CIBER-BBN), Campus Universitari de Bellaterra, 08193 Cerdanyola del Vallès, Spain
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20
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Jeong Y, Chung H, Noh J. Control of two-dimensional structure of tolanethioacetate self-assembled monolayers on Au(1 1 1). Colloids Surf A Physicochem Eng Asp 2008. [DOI: 10.1016/j.colsurfa.2007.04.132] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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21
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Formation and Annealing Effect of Tolanethioacetate Self-Assembled Monolayers on Au(111). B KOREAN CHEM SOC 2007. [DOI: 10.5012/bkcs.2007.28.12.2445] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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22
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Barra AL, Bianchi F, Caneschi A, Cornia A, Gatteschi D, Gorini L, Gregoli L, Maffini M, Parenti F, Sessoli R, Sorace L, Talarico AM. New Single-Molecule Magnets by Site-Specific Substitution: Incorporation of “Alligator Clips” into Fe4 Complexes. Eur J Inorg Chem 2007. [DOI: 10.1002/ejic.200700382] [Citation(s) in RCA: 45] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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23
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Jeong Y, Kwon S, Kang Y, Lee C, Ito E, Hara M, Noh J. Unique domain structure of pi-conjugated tolanethioacetate self-assembled monolayers on Au(111). Ultramicroscopy 2007; 107:1000-3. [PMID: 17570593 DOI: 10.1016/j.ultramic.2007.02.038] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2006] [Accepted: 02/19/2007] [Indexed: 11/27/2022]
Abstract
Surface structures of tolanethioacetate (TTA) self-assembled monolayers (SAMs) on Au(111), formed in a 0.5mM N,N'-dimethylformamide (DMF) solution, were investigated as a function of solution temperature by scanning tunneling microscopy (STM). The STM study revealed that thioacetyl-terminated TTA molecules on Au(111) did not form ordered SAMs at room temperature and 80 degrees C, whereas the adsorption of TTA molecules on Au(111) at a solution temperature of 50 degrees C led to the formation of two mixed phases: a disordered phase and a unique ordered phase, consisting rod-like domains, which can be described as a ( radical6x radical13)15 degrees superstructure. From this study, it was demonstrated that solution temperature is a key factor controlling the two-dimensional SAM structure of TTA molecules.
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Affiliation(s)
- Youngdo Jeong
- Advanced Nanomaterials Laboratory, Department of Chemistry, Hanyang University, Seoul 133-791, Republic of Korea
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