1
|
Tahara K, Ashihara Y, Ikeda T, Kadoya T, Fujisawa JI, Ozawa Y, Tajima H, Toyoda N, Haruyama Y, Abe M. Immobilizing a π-Conjugated Catecholato Framework on Surfaces of SiO 2 Insulator Films via a One-Atom Anchor of a Platinum Metal Center to Modulate Organic Transistor Performance. Inorg Chem 2020; 59:17945-17957. [PMID: 33169615 DOI: 10.1021/acs.inorgchem.0c02163] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Chemical modification of insulating material surfaces is an important methodology to improve the performance of organic field-effect transistors (OFETs). However, few redox-active self-assembled monolayers (SAMs) have been constructed on gate insulator film surfaces, in contrast to the numerous SAMs formed on many types of conducting electrodes. In this study, we report a new approach to introduce a π-conjugated organic fragment in close proximity to an insulating material surface via a transition metal center acting as a one-atom anchor. On the basis of the reported coordination chemistry of a catecholato complex of Pt(II) in solution, we demonstrate that ligand exchange can occur on an insulating material surface, affording SAMs on the SiO2 surface derived from a newly synthesized Pt(II) complex containing a benzothienobenzothiophene (BTBT) framework in the catecholato ligand. The resultant SAMs were characterized in detail by water contact angle measurements, X-ray photoelectron spectroscopy, atomic force microscopy, and cyclic voltammetry. The SAMs served as good scaffolds of π-conjugated pillars for forming thin films of a well-known organic semiconductor C8-BTBT (2,7-dioctyl[1]benzothieno[3,2-b][1]benzothiophene), accompanied by the engagements of the C8-BTBT molecules with the SAMs containing the common BTBT framework at the first layer on SiO2. OFETs containing the SAMs displayed improved performance in terms of hole mobility and onset voltage, presumably because of the unique interfacial structure between the organic semiconducting and inorganic insulating layers. These findings provide important insight into creating new elaborate interfaces through installing coordination chemistry in solution to solid surfaces, as well as OFET design by considering the compatibility between SAMs and organic semiconductors.
Collapse
Affiliation(s)
- Keishiro Tahara
- Graduate School of Material Science, University of Hyogo, 3-2-1, Kouto, Kamigori, Ako, Hyogo 6781297, Japan
| | - Yuya Ashihara
- Graduate School of Material Science, University of Hyogo, 3-2-1, Kouto, Kamigori, Ako, Hyogo 6781297, Japan
| | - Takashi Ikeda
- Graduate School of Material Science, University of Hyogo, 3-2-1, Kouto, Kamigori, Ako, Hyogo 6781297, Japan
| | - Tomofumi Kadoya
- Graduate School of Material Science, University of Hyogo, 3-2-1, Kouto, Kamigori, Ako, Hyogo 6781297, Japan
| | - Jun-Ichi Fujisawa
- Graduate School of Science and Technology, Gunma University, 1-5-1, Tenjin, Kiryu, Gunma 3768515, Japan
| | - Yoshiki Ozawa
- Graduate School of Material Science, University of Hyogo, 3-2-1, Kouto, Kamigori, Ako, Hyogo 6781297, Japan
| | - Hiroyuki Tajima
- Graduate School of Material Science, University of Hyogo, 3-2-1, Kouto, Kamigori, Ako, Hyogo 6781297, Japan
| | - Noriaki Toyoda
- Graduate School of Engineering, University of Hyogo, 2167, Shosha, Himeji, Hyogo 6712280, Japan
| | - Yuichi Haruyama
- Laboratory of Advanced Science and Technology for Industry, University of Hyogo, 3-1-2 Koto, Kamigori, Ako, Hyogo 6781205, Japan
| | - Masaaki Abe
- Graduate School of Material Science, University of Hyogo, 3-2-1, Kouto, Kamigori, Ako, Hyogo 6781297, Japan
| |
Collapse
|
2
|
Palasz JM, Porter TM, Kubiak CP. Electronic Structural Studies of the Ru 3(III,II,II) Mixed-Valent State of Oxo-Centered Triruthenium Clusters. Inorg Chem 2020; 59:10532-10539. [DOI: 10.1021/acs.inorgchem.0c00881] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Joseph M. Palasz
- Department of Chemistry and Biochemistry, University of California, San Diego, 9500 Gilman Drive, MC 0358, La Jolla, San Diego, California 92093, United States
| | - Tyler M. Porter
- Department of Chemistry and Biochemistry, University of California, San Diego, 9500 Gilman Drive, MC 0358, La Jolla, San Diego, California 92093, United States
| | - Clifford P. Kubiak
- Department of Chemistry and Biochemistry, University of California, San Diego, 9500 Gilman Drive, MC 0358, La Jolla, San Diego, California 92093, United States
| |
Collapse
|
3
|
Ikeda T, Tahara K, Kadoya T, Tajima H, Toyoda N, Yasuno S, Ozawa Y, Abe M. Ferrocene on Insulator: Silane Coupling to a SiO 2 Surface and Influence on Electrical Transport at a Buried Interface with an Organic Semiconductor Layer. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2020; 36:5809-5819. [PMID: 32407106 DOI: 10.1021/acs.langmuir.0c00515] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
A silane coupling-based procedure for decoration of an insulator surface containing abundant hydroxy groups by constructing redox-active self-assembled monolayers (SAMs) is described. A newly synthesized ferrocene (Fc) derivative containing a triethoxysilyl group designated FcSi was immobilized on SiO2/Si by a simple operation that involved immersing the substrate in a toluene solution of the Fc silane coupling reagent and then rinsing the resulting substrate. X-ray photoelectron spectroscopy (XPS) measurements confirmed that the Fc group was immobilized on SiO2/Si in the Fe(II) state. Cyclic voltammetry measurements showed that the Fc groups were electrically insulated from the Si electrode by the SiO2 layer. The FcSi on SiO2/Si structures were found to serve as a good scaffold for formation of organic semiconductor thin films by vacuum thermal evaporation of C8-BTBT (2,7-dioctyl[1]benzothieno[3,2-b][1]benzothiophene), which is well-known as an organic field-effect transistor (OFET) material. The X-ray diffraction profile indicated that the conventional standing-up conformation of the C8-BTBT molecules perpendicular to the substrates was maintained in the thin films formed on FcSi@SiO2/Si. Further vacuum thermal evaporation of Au provided an FcSi-based OFET structure with good transfer characteristics. The FcSi-based OFET showed pronounced source-drain current hysteresis between the forward and backward scans. The degree of this hysteresis was varied reversibly via gate bias manipulation, which was presumably accompanied by trapping and detrapping of hole carriers at the Fc-decorated SiO2 surface. These findings provide new insights into application of redox-active SAMs to nonvolatile OFET memories while also creating new interfaces through junctions with functional thin films, in which the underlying redox-active SAMs play supporting roles.
Collapse
Affiliation(s)
- Takashi Ikeda
- Graduate School of Material Science, University of Hyogo, 3-2-1, Kouto, Kamigori, Ako, Hyogo 678-1297, Japan
| | - Keishiro Tahara
- Graduate School of Material Science, University of Hyogo, 3-2-1, Kouto, Kamigori, Ako, Hyogo 678-1297, Japan
| | - Tomofumi Kadoya
- Graduate School of Material Science, University of Hyogo, 3-2-1, Kouto, Kamigori, Ako, Hyogo 678-1297, Japan
| | - Hiroyuki Tajima
- Graduate School of Material Science, University of Hyogo, 3-2-1, Kouto, Kamigori, Ako, Hyogo 678-1297, Japan
| | - Noriaki Toyoda
- Graduate School of Engineering, University of Hyogo, 2167, Shosha, Himeji, Hyogo 671-2280, Japan
| | - Satoshi Yasuno
- Japan Synchrotron Radiation Research Institute, 1-1-1, Kouto, Sayo, Hyogo 679-5198, Japan
| | - Yoshiki Ozawa
- Graduate School of Material Science, University of Hyogo, 3-2-1, Kouto, Kamigori, Ako, Hyogo 678-1297, Japan
| | - Masaaki Abe
- Graduate School of Material Science, University of Hyogo, 3-2-1, Kouto, Kamigori, Ako, Hyogo 678-1297, Japan
| |
Collapse
|
4
|
Preface. J Electroanal Chem (Lausanne) 2017. [DOI: 10.1016/j.jelechem.2017.08.001] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
|
5
|
Compagnoni M, Kondrat SA, Chan-Thaw CE, Morgan DJ, Wang D, Prati L, Villa A, Dimitratos N, Rossetti I. Spectroscopic Investigation of Titania-Supported Gold Nanoparticles Prepared by a Modified Deposition/Precipitation Method for the Oxidation of CO. ChemCatChem 2016. [DOI: 10.1002/cctc.201600072] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Matteo Compagnoni
- Dip. Chimica; Università degli Studi di Milano; INSTM Unit Milano-Università and CNR-ISTM; via C. Golgi, 19, I- 20133 Milano Italy
| | - Simon A. Kondrat
- Cardiff Catalysis Institute, School of Chemistry; Cardiff University, Main Building; Park Place Cardiff CF103AT UK
| | - Carine E. Chan-Thaw
- Dip. Chimica; Università degli Studi di Milano; INSTM Unit Milano-Università and CNR-ISTM; via C. Golgi, 19, I- 20133 Milano Italy
| | - David J. Morgan
- Cardiff Catalysis Institute, School of Chemistry; Cardiff University, Main Building; Park Place Cardiff CF103AT UK
| | - Di Wang
- Institute of Nanotechnology; Karlsruhe Institute of Technology; Hermann-von-Helmholtz-Platz 1 76344 Eggenstein-Leopoldshafen Germany
| | - Laura Prati
- Dip. Chimica; Università degli Studi di Milano; INSTM Unit Milano-Università and CNR-ISTM; via C. Golgi, 19, I- 20133 Milano Italy
| | - Alberto Villa
- Dip. Chimica; Università degli Studi di Milano; INSTM Unit Milano-Università and CNR-ISTM; via C. Golgi, 19, I- 20133 Milano Italy
| | - Nikolaos Dimitratos
- Cardiff Catalysis Institute, School of Chemistry; Cardiff University, Main Building; Park Place Cardiff CF103AT UK
| | - Ilenia Rossetti
- Dip. Chimica; Università degli Studi di Milano; INSTM Unit Milano-Università and CNR-ISTM; via C. Golgi, 19, I- 20133 Milano Italy
| |
Collapse
|
6
|
Moreira MB, Da Silva CFN, Pesci RBP, Deflon VM, Nikolaou S. Revisiting oxo-centered carbonyl-triruthenium clusters: investigating CO photorelease and some spectroscopic and electrochemical correlations. Dalton Trans 2016; 45:16799-16809. [DOI: 10.1039/c6dt02511k] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
This work presents the correlations of the spectroscopic and electrochemical properties of triruthenium carbonyl μ-oxo complexes with the σ-donor or π-acceptor ability of ancillary ligands.
Collapse
Affiliation(s)
- Mariete B. Moreira
- Departamento de Química
- Faculdade de Filosofia
- Ciências e Letras de Ribeirão Preto
- Universidade de São Paulo
- Ribeirão Preto-SP
| | - Camila F. N. Da Silva
- Departamento de Química
- Faculdade de Filosofia
- Ciências e Letras de Ribeirão Preto
- Universidade de São Paulo
- Ribeirão Preto-SP
| | - Rafaela B. P. Pesci
- Instituto de Química de São Carlos
- Departamento de Química e Física Molecular – Universidade de São Paulo
- São Carlos-SP
- Brazil
| | - Victor M. Deflon
- Instituto de Química de São Carlos
- Departamento de Química e Física Molecular – Universidade de São Paulo
- São Carlos-SP
- Brazil
| | - Sofia Nikolaou
- Departamento de Química
- Faculdade de Filosofia
- Ciências e Letras de Ribeirão Preto
- Universidade de São Paulo
- Ribeirão Preto-SP
| |
Collapse
|
7
|
Investigation of a novel trinuclear μ-oxo ruthenium complex as a potential nitric oxide releaser for biological purposes. Inorganica Chim Acta 2015. [DOI: 10.1016/j.ica.2015.01.038] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
|
8
|
da Silva RS, de Lima RG, de Paula Machado S. Design, Reactivity, and Biological Activity of Ruthenium Nitrosyl Complexes. ADVANCES IN INORGANIC CHEMISTRY 2015. [DOI: 10.1016/bs.adioch.2014.11.001] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
|
9
|
Nitric oxide photorelease from a trinuclear ruthenium nitrosyl complex and its in vitro cytotoxicity against melanoma cells. J Inorg Biochem 2014; 134:36-8. [DOI: 10.1016/j.jinorgbio.2014.01.012] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/09/2013] [Revised: 01/13/2014] [Accepted: 01/14/2014] [Indexed: 11/19/2022]
|
10
|
Zhang HX, Sasaki Y, Abe M, Zhang Y, Ye S, Osawa M, Uosaki K. Electrochemical and infrared spectroscopic study of the self-assembled monolayer of a cyano-bridged dimeric triruthenium complex on gold surface. J Electroanal Chem (Lausanne) 2014. [DOI: 10.1016/j.jelechem.2013.12.012] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
|
11
|
Naidek KP, Hoffmeister DM, Pazinato J, Westphal E, Gallardo H, Nakamura M, Araki K, Toma HE, Winnischofer H. Ruthenium Acetate Cluster Amphiphiles and Their Langmuir–Blodgett Films for Electrochromic Switching Devices. Eur J Inorg Chem 2014. [DOI: 10.1002/ejic.201301442] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Affiliation(s)
- Karine P. Naidek
- Department of Chemistry, Universidade Federal do Paraná, Curitiba, Paraná 81531‐980, Brazil, http://www.quimica.ufpr.br/site/
| | - Denize M. Hoffmeister
- Department of Chemistry, Universidade Federal do Paraná, Curitiba, Paraná 81531‐980, Brazil, http://www.quimica.ufpr.br/site/
| | - Jaqueline Pazinato
- Department of Chemistry, Universidade Federal do Paraná, Curitiba, Paraná 81531‐980, Brazil, http://www.quimica.ufpr.br/site/
| | - Eduard Westphal
- Department of Chemistry, Universidade Federal de Santa Catarina, Florianópolis, Santa Catarina 88040‐900, Brazil
| | - Hugo Gallardo
- Department of Chemistry, Universidade Federal de Santa Catarina, Florianópolis, Santa Catarina 88040‐900, Brazil
| | - Marcelo Nakamura
- Department of Inorganic Chemistry, Chemistry Institute Universidade de São Paulo, São Paulo, São Paulo 05508‐000, Brazil
| | - Koiti Araki
- Department of Inorganic Chemistry, Chemistry Institute Universidade de São Paulo, São Paulo, São Paulo 05508‐000, Brazil
| | - Henrique E. Toma
- Department of Inorganic Chemistry, Chemistry Institute Universidade de São Paulo, São Paulo, São Paulo 05508‐000, Brazil
| | - Herbert Winnischofer
- Department of Chemistry, Universidade Federal do Paraná, Curitiba, Paraná 81531‐980, Brazil, http://www.quimica.ufpr.br/site/
| |
Collapse
|
12
|
Zhang HX, Abe M, Zhang Y, Li G, Ye S, Osawa M, Sasaki Y. Proton-coupled electron transfer and Lewis acid recognition at self-assembled monolayers of an oxo-bridged diruthenium(III) complex functionalized with two disulfide anchors. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2013; 29:10110-10119. [PMID: 23829546 DOI: 10.1021/la401736f] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/02/2023]
Abstract
A new μ-oxo-bis(μ-acetato)diruthenium(III) complex bearing two pyridyl disulfide ligands {[Ru2(μ-O)(μ-OAc)2(bpy)2(L(py-SS))2](PF6)2 (OAc = CH3CO2(-), bpy = 2,2'-bipyridine, L(py-SS) = (C5H4N)CH2NHC(O)(CH2)4CH(CH2)2SS) (1)} has been synthesized to prepare self-assembled monolayers (SAMs) on the Au(111) electrode surface. The SAMs have been characterized by contact-angle measurements, reflection-absorption surface infrared spectroscopy, cyclic voltammetry, and reductive desorption experiments. The SAMs exhibited proton-coupled electron transfer (PCET) reactions when the electrochemistry was studied in aqueous electrolyte solution (0.1 M NaClO4 with Britton-Robinson buffer to adjust the solution pH). The potential-pH plot (Pourbaix diagram) in the pH range from 1 to 12 has established that the dinuclear ruthenium moiety was involved in the interfacial PCET processes with four distinct redox states: Ru(III)Ru(III)(μ-O), Ru(II)Ru(III)(μ-OH), Ru(II)Ru(II)(μ-OH), and Ru(II)Ru(II)(μ-OH2). We also demonstrated that the interfacial redox processes were modulated by the addition of Lewis acids such as BF3 or Al(3+) to the electrolyte media, in which the externally added Lewis acids interacted with μ-O of the dinuclear moiety within the SAMs.
Collapse
Affiliation(s)
- Hua-Xin Zhang
- Catalysis Research Center, Hokkaido University, Kita-ku, Sapporo 001-0021, Japan
| | | | | | | | | | | | | |
Collapse
|
13
|
Feld DJ, Hsu HT, Eckermann AL, Meade TJ. Trinuclear ruthenium clusters as bivalent electrochemical probes for ligand-receptor binding interactions. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2012; 28:939-49. [PMID: 22053821 PMCID: PMC3254724 DOI: 10.1021/la202882k] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/07/2023]
Abstract
Despite their popularity, electrochemical biosensors often suffer from low sensitivity. One possible approach to overcome low sensitivity in protein biosensors is to utilize multivalent ligand-receptor interactions. Controlling the spatial arrangement of ligands on surfaces is another crucial aspect of electrochemical biosensor design. We have synthesized and characterized five biotinylated trinuclear ruthenium clusters as potential new biosensor platforms: [Ru(3)O(OAc)(6)CO(4-BMP)(py)](0) (3), [Ru(3)O(OAc)(6)CO(4-BMP)(2)](0) (4), [Ru(3)O(OAc)(6)L(4-BMP)(py)](+) (8), [Ru(3)O(OAc)(6)L(4-BMP)(2)](+) (9), and [Ru(3)O(OAc)(6)L(py)(2)](+) (10) (OAc = acetate, 4-BMP = biotin aminomethylpyridine, py = pyridine, L = pyC16SH). HABA/avidin assays and isothermal titration calorimetry were used to evaluate the avidin binding properties of 3 and 4. The binding constants were found to range from (6.5-8.0) × 10(6) M(-1). Intermolecular protein binding of 4 in solution was determined by native gel electrophoresis. QM, MM, and MD calculations show the capability for the bivalent cluster, 4, to intramolecularly bind to avidin. Electrochemical measurements in solution of 3a and 4a show shifts in E(1/2) of -58 and -53 mV in the presence of avidin, respectively. Self-assembled monolayers formed with 8-10 were investigated as a model biosensor system. Diluent/cluster ratio and composition were found to have a significant effect on the ability of avidin to adequately bind to the cluster. Complexes 8 and 10 showed negligible changes in E(1/2), while complex 9 showed a shift in E(1/2) of -43 mV upon avidin addition. These results suggest that multivalent interactions can have a positive impact on the sensitivity of electrochemical protein biosensors.
Collapse
Affiliation(s)
- Daniel J Feld
- Department of Chemistry, Northwestern University, 2145 Sheridan Rd., Evanston, Illinois 60208, United States
| | | | | | | |
Collapse
|
14
|
Nikolaou S, Toma SH, de Souza VR, Alves JB, Araki K, Toma HE. Triangular ruthenium acetate clusters containing the bis(pyridyl)propane ligand and their inclusion chemistry with β-cyclodextrin. TRANSIT METAL CHEM 2011. [DOI: 10.1007/s11243-011-9532-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
|
15
|
Toma SH, Santos JJ, Araki K, Toma HE. Supramolecular Approach to Gold Nanoparticle/Triruthenium Cluster Hybrid Materials and Interfaces. Eur J Inorg Chem 2011. [DOI: 10.1002/ejic.201001118] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
|
16
|
Stasicka Z. Transition metal complexes as solar photocatalysts in the environment. ADVANCES IN INORGANIC CHEMISTRY 2011. [DOI: 10.1016/b978-0-12-385904-4.00004-4] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
|
17
|
Zhang LY, Zhang HX, Ye S, Wen HM, Chen ZN, Osawa M, Uosaki K, Sasaki Y. A butadiyne-linked diruthenium molecular wire self-assembled on a gold electrode surface. Chem Commun (Camb) 2011; 47:923-5. [DOI: 10.1039/c0cc03048a] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
|
18
|
Eggers PK, Da Silva P, Darwish NA, Zhang Y, Tong Y, Ye S, Paddon-Row MN, Gooding JJ. Self-assembled monolayers formed using zero net curvature norbornylogous bridges: the influence of potential on molecular orientation. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2010; 26:15665-15670. [PMID: 20825221 DOI: 10.1021/la101590b] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/29/2023]
Abstract
A new class of electroactive norbornylogous bridges, with no net curvature, that form self-assembled monolayers on gold electrodes were studied by electrochemistry and in situ infrared spectroscopy. The influence of the electrode potential on the structure and conformation of the self-assembled monolayers (SAMs) was investigated. This was performed using two different lengths of rigid norbornylogous bridges with terminal ferrocene moieties and ω-hydroxyalkanethiols. It was found that single component monolayers of the rigid norbornylogous bridges changed their tilt angle with their transition from the ferrocene to ferricinium. However, when the norbornylogous SAMs were diluted with ω-hydroxyalkanethiols the tilt angle remained unchanged upon oxidation of ferrocene to ferricinium. It was also observed that the tilt angle of the diluent, ω-hydroxyalkanethiols changed at potentials exceeding 500 mV.
Collapse
Affiliation(s)
- Paul K Eggers
- School of Chemistry, The University of New South Wales, Sydney, NSW 2052, Australia
| | | | | | | | | | | | | | | |
Collapse
|
19
|
Sugimoto H, Tano H, Miyake H, Itoh S. Seven-coordinate Rhenium(III) Complexes with a Labile Coordination Site Assembled on Indium-doped Tin Oxide (ITO) Electrodes: Catalytic Reduction of Dioxygen to Hydrogen Peroxide. CHEM LETT 2010. [DOI: 10.1246/cl.2010.986] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
|
20
|
Inatomi A, Abe M, Hisaeda Y. Carboxylato‐Modified New Oxo‐Centred Triruthenium Cluster Compounds with CO and Solvent Ligands: The X‐ray Structure of [Ru
3
O(C
2
H
5
CO
2
)
6
(CO)(THF)
2
]. Eur J Inorg Chem 2009. [DOI: 10.1002/ejic.200900701] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Atsushi Inatomi
- Department of Applied Chemistry, Graduate School of Engineering, Kyushu University, Nishi‐ku, Fukuoka 819‐0395, Japan, Fax: +81‐92‐802‐2828
| | - Masaaki Abe
- Department of Applied Chemistry, Graduate School of Engineering, Kyushu University, Nishi‐ku, Fukuoka 819‐0395, Japan, Fax: +81‐92‐802‐2828
| | - Yoshio Hisaeda
- Department of Applied Chemistry, Graduate School of Engineering, Kyushu University, Nishi‐ku, Fukuoka 819‐0395, Japan, Fax: +81‐92‐802‐2828
| |
Collapse
|
21
|
Tomiyasu Y, Abe M, Morihara Y, Ohgi H, Otake T, Hisaeda Y. Organic Films Containing Trinuclear Ruthenium Clusters that Exhibit Redox-state-dependent Heat-shielding Characteristics. CHEM LETT 2009. [DOI: 10.1246/cl.2009.492] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
|
22
|
Zhang Y, Tong Y, Abe M, Uosaki K, Osawa M, Sasaki Y, Ye S. Fabrication of photochemical pattern on a self-assembled monolayer (SAM) of a ruthenium cluster under electrochemical control. ACTA ACUST UNITED AC 2009. [DOI: 10.1039/b815571b] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
|