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Liu JH, Tu T, Shen YL, Tu B, Qian DJ. Interfacial Self-Assembly of Organized Ultrathin Films of Tripodal Metal-Terpyridyl Coordination Polymers as Luminophores and Heterogeneous Catalysts for Photocatalytic CO 2 Reduction. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2023; 39:4777-4788. [PMID: 36947690 DOI: 10.1021/acs.langmuir.3c00166] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/18/2023]
Abstract
Metal-directed interfacial self-assembly of well-defined coordination polymer (CP) ultrathin films can control the metal complex arrangement and distribution at the molecular level, providing a convenient route for the design and fabrication of novel opto-electrical devices and heterogeneous catalysts. Here, we report the assembly of two series of CP multilayers with the transition-metal ions of Fe2+, Co2+, Zn2+ and Tb3+ as connectors and tripodal terpyridyl ligands of 4,4',4″-(1,3,5-triazine-2,4,6-triyl)tris(1-(4-([2,2':6',2″-terpyridin]-4'-yl)benzyl)pyridin-1-ium) (TerPyTa) and 4,4',4″-(benzene-1,3,5-triyl)tris(1-(4-([2,2':6',2″-terpyridin]-4'-yl)benzyl)pyridin-1-ium) (TerPyBen) as linkers at the air-water interface. The as-prepared Langmuir-Blodgett (LB) films display strong luminescence, with the emission wavelength and relative intensity dependent on both the metal ions and linkers; among them, the Zn-TerPyTa and Zn-TerPyBen CPs give off the strongest luminescent emission centered at about 370 nm with an emission lifetime of approximately 0.2-0.3 ns. The Tb-TerPyTa CPs can give off emission at approximately 490, 546, 586, and 622 nm, attributed to the 5D4 to 7F3-6 electron transitions of typical Tb3+ ions. Finally, these CP LB films can act as efficient heterogeneous photocatalysts for the CO2 reduction to selectively produce CO. The catalytic efficiency can be optimized by adjusting the experimental conditions (light sensitizer, electron donor, and water content) and CP composition (metal ion and ligand) with an excellent yield of up to 248.1 mmol g-1. In particular, it is revealed that, under the same conditions, the catalytic efficiency of the Fe-TerPyTa CP LB film is nearly 2 to 3 orders of magnitude higher than that of the other metalated complexes investigated in the homogeneous system. UV-vis spectroscopy and cyclic voltammetry studies demonstrated that the dual active sites of Fe-terpyridine and TerPyTa units contribute to the enhanced catalytic activity. This work provides an effective method to introduce the earth-abundant metal complexes into CP films to construct efficient noble-metal-free photocatalysts for the CO2 reduction.
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Affiliation(s)
- Jian-Hong Liu
- Department of Chemistry, Fudan University, 2005 Songhu Road, Shanghai 200438, China
| | - Tao Tu
- Department of Chemistry, Fudan University, 2005 Songhu Road, Shanghai 200438, China
| | - Yu-Luo Shen
- Department of Chemistry, Fudan University, 2005 Songhu Road, Shanghai 200438, China
| | - Bo Tu
- Department of Chemistry, Fudan University, 2005 Songhu Road, Shanghai 200438, China
| | - Dong-Jin Qian
- Department of Chemistry, Fudan University, 2005 Songhu Road, Shanghai 200438, China
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Wu KH, Sakamoto R, Maeda H, Phua EJH, Nishihara H. Ultralong π-Conjugated Bis(terpyridine)metal Polymer Wires Covalently Bound to a Carbon Electrode: Fast Redox Conduction and Redox Diode Characteristics. Molecules 2021; 26:molecules26144267. [PMID: 34299542 PMCID: PMC8307305 DOI: 10.3390/molecules26144267] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2021] [Revised: 07/08/2021] [Accepted: 07/08/2021] [Indexed: 11/21/2022] Open
Abstract
We developed an efficient and convenient electrochemical method to synthesize π-conjugated redox metal-complex linear polymer wires composed of azobenzene-bridged bis(terpyridine)metal (2-M, M = Fe, Ru) units covalently immobilized on glassy carbon (GC). Polymerization proceeds by electrochemical oxidation of bis(4′-(4-anilino)-2,2′:6′,2″-terpyridine)metal (1-M) in a water–acetonitrile–HClO4 solution, affording ultralong wires up to 7400 mers (corresponding to ca. 15 μm). Both 2-Fe and 2-Ru undergo reversible redox reactions, and their redox behaviors indicate remarkably fast redox conduction. Anisotropic hetero-metal-complex polymer wires with Fe and Ru centers are constructed via stepwise electropolymerization. The cyclic voltammograms of two hetero-metal-complex polymer wires, GC/[2-Fe]–[2-Ru] (3) and GC/[2-Ru]–[2-Fe] (4), show irreversible redox reactions with opposite electron transfer characteristics, indicating redox diodelike behavior. In short, the present electrochemical method is useful to synthesize polymer wire arrays and to integrate functional molecules on carbon.
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Affiliation(s)
- Kuo-Hui Wu
- Department of Chemistry, Graduate School of Science, The University of Tokyo, 7-3-1, Hongo, Bunkyo-ku, Tokyo 113-0033, Japan; (R.S.); (H.M.); (E.J.H.P.)
- Department of Chemistry, National Central University, 300 Jung-Da Rd. Jhong-Li 32001, Taiwan
- Correspondence: (K.-H.W.); (H.N.)
| | - Ryota Sakamoto
- Department of Chemistry, Graduate School of Science, The University of Tokyo, 7-3-1, Hongo, Bunkyo-ku, Tokyo 113-0033, Japan; (R.S.); (H.M.); (E.J.H.P.)
- Department of Energy and Hydrocarbon Chemistry, Graduate School of Engineering, Kyoto University, Nishikyo-ku, Kyoto 615-8510, Japan
| | - Hiroaki Maeda
- Department of Chemistry, Graduate School of Science, The University of Tokyo, 7-3-1, Hongo, Bunkyo-ku, Tokyo 113-0033, Japan; (R.S.); (H.M.); (E.J.H.P.)
- Research Center for Science and Technology, Tokyo University of Science, Chiba 278-8510, Japan
| | - Eunice Jia Han Phua
- Department of Chemistry, Graduate School of Science, The University of Tokyo, 7-3-1, Hongo, Bunkyo-ku, Tokyo 113-0033, Japan; (R.S.); (H.M.); (E.J.H.P.)
| | - Hiroshi Nishihara
- Department of Chemistry, Graduate School of Science, The University of Tokyo, 7-3-1, Hongo, Bunkyo-ku, Tokyo 113-0033, Japan; (R.S.); (H.M.); (E.J.H.P.)
- Research Center for Science and Technology, Tokyo University of Science, Chiba 278-8510, Japan
- Correspondence: (K.-H.W.); (H.N.)
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Yamanoi Y, Nakae T, Nishihara H. Bio-organic-inorganic hybrid soft materials: photoelectric conversion systems based on photosystem I and II with molecular wires. CHEM LETT 2021. [DOI: 10.1246/cl.210111] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Yoshinori Yamanoi
- Department of Chemistry, School of Science, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-0033, Japan
| | - Toyotaka Nakae
- Department of Chemistry, School of Science, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-0033, Japan
| | - Hiroshi Nishihara
- Research Center for Science and Technology, Tokyo University of Science, 2641 Yamazaki, Noda-shi, Chiba 278-8510, Japan
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4
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Mondal PC, Singh V, Zharnikov M. Nanometric Assembly of Functional Terpyridyl Complexes on Transparent and Conductive Oxide Substrates: Structure, Properties, and Applications. Acc Chem Res 2017; 50:2128-2138. [PMID: 28829569 DOI: 10.1021/acs.accounts.7b00166] [Citation(s) in RCA: 45] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
Abstract
Over the last few decades, molecular assemblies on solid substrates have become increasingly popular, challenging the traditional systems and materials in terms of better control over molecular structure and function at the nanoscale. A variety of such assemblies with high complexity and adjustable properties was generated on the basis of organic, inorganic, organometallic, polymeric, and biomolecular building blocks. Particular versatile elements in this context are terpyridyls due to their wide design flexibility, ease of functionalization, and ability to coordinate to a broad variety of transition-metal ions without forming diastereoisomers, which facilitates tuning of their optical and electronic properties. Specifically, metal-terpyridyl complexes are worthy building blocks for generating optoelectronically active assemblies on technologically relevant transparent and conductive oxide substrates. In this context, the present Account summarizes our recent results on the preparation, characterization, and applications of nanometric (2-10 nm) surface-confined molecular assemblies of Cu2+, Fe2+, Ru2+, and Os2+-terpyridyl complexes on SiOx-based substrates (glass, quartz, silicon, and ITO-coated glass). These assemblies rely on covalent bond formation between the iodo-/chloro-terminated functionalized SiOx substrates and the pendant group (mostly pyridyl) hosted on the terpyridyl complexes. Such an anchoring provides excellent thermal, temporal, radiative, and electrochemical stability to the assemblies as needed for technological applications. The functional, covalently assembled monolayers were extended to fabricate molecular dyads (bilayers), triads (trilayers), and oligomers by an established layer-by-layer procedure using suitable metallolinkers such as Cu2+, Ag+, and Pd2+. The chemical, optical, and electrochemical properties of these assemblies could be precisely adjusted by selection of proper metal-terpyridyl complexes and/or metallolinkers, so that the resulting systems served, relying on the specific design, as sensors, catalysts, molecular logic gates, and photochromic devices. For instance, a Cu-terpyridyl-based assembly on a glass substrate showed "turn on" detection of ascorbic acid. In another example, heterometallic molecular triads were exposed to redox-active NO+ for selective oxidation of the metal ions, and the optical readout was utilized for configuring multiple-input-based molecular logic gates. Furthermore, bias-driven (+0.6 to +1.6 V vs Ag/AgCl) optical properties of the heteroleptic Ru2+/Os2+-terpyridyl monolayers were modulated and "read out" by spectro-electrochemical techniques demonstrating high charge/information density (3-4 × 1014 electrons/cm2). Moreover, the manipulation of the M2+/3+ (M = Fe, Ru, and Os) redox wave in the assembly provided the possibility to create mixed-valence redox-states paving the way toward the fabrication of "multi-bit" memory systems. We truly believe that due to these intriguing characteristics and excellent stability, terpyridyl-based molecular assemblies have the potential to become a versatile platform for the next generation of smart optoelectronic devices.
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Affiliation(s)
- Prakash Chandra Mondal
- National Institute for Nanotechnology, University of Alberta, Edmonton, Alberta T6G 2M9, Canada
| | - Vikram Singh
- Centre
for Nanoscience and Nanotechnology, Panjab University, Chandigarh 160014, India
| | - Michael Zharnikov
- Applied
Physical Chemistry, Heidelberg University, 69120 Heidelberg, Germany
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Maeda H, Sakamoto R, Nishihara H. Interfacial synthesis of electrofunctional coordination nanowires and nanosheets of bis(terpyridine) complexes. Coord Chem Rev 2017. [DOI: 10.1016/j.ccr.2017.02.013] [Citation(s) in RCA: 42] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
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6
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Sakamoto R. Bottom-up Creation of Functional Low-Dimensional Materials Based on Metal Complexes. BULLETIN OF THE CHEMICAL SOCIETY OF JAPAN 2017. [DOI: 10.1246/bcsj.20160304] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
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7
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Ghasemi E, Alimardani E, Shams E, Koohmareh GA. Modification of glassy carbon electrode with iron-terpyridine complex and iron-terpyridine complex covalently bonded to ordered mesoporous carbon substrate: Preparation, electrochemistry and application to H 2 O 2 determination. J Electroanal Chem (Lausanne) 2017. [DOI: 10.1016/j.jelechem.2017.01.043] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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8
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Maeda H, Sakamoto R, Nishihara H. Electron transport of bis(terpyridine)iron(II) complex wires on a semiconducting electrode. J Electroanal Chem (Lausanne) 2016. [DOI: 10.1016/j.jelechem.2016.04.027] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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9
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Affiliation(s)
- Bruno Fabre
- Institut des Sciences Chimiques de Rennes, UMR 6226 CNRS/Université de Rennes 1, Matière Condensée et Systèmes Electroactifs MaCSE, 35042 Rennes Cedex, France
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10
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Sakamoto R, Wu KH, Matsuoka R, Maeda H, Nishihara H. π-Conjugated bis(terpyridine)metal complex molecular wires. Chem Soc Rev 2016; 44:7698-714. [PMID: 25864838 DOI: 10.1039/c5cs00081e] [Citation(s) in RCA: 116] [Impact Index Per Article: 14.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
Bottom-up approaches have gained significant attention recently for the creation of nano-sized, ordered functional structures and materials. Stepwise coordination techniques, in which ligand molecules and metal sources are reacted alternatively, offer several advantages. Coordination bonds are stable, reversible, and self-assembling, and the resultant metal complex motifs may contain functionalities unique to their own characteristics. This review focuses on metal complex wire systems, specifically the bottom-up fabrication of linear and branched bis(terpyridine)metal complex wires on electrode surfaces. This system possesses distinct and characteristic electronic functionalities, intra-wire redox conduction and excellent long-range electron transport ability. This series of comprehensive studies exploited the customizability of bis(terpyridine)metal complex wires, including examining the influence of building blocks. In addition, simple yet effective electron transfer models were established for redox conduction and long-range electron transport. A fabrication technique for an ultra-long bis(terpyridine)metal complex wire is also described, along with its properties and functionalities.
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Affiliation(s)
- Ryota Sakamoto
- Department of Chemistry, Graduate School of Science, The University of Tokyo, 7-3-1, Hongo, Bunkyo-ku, Tokyo 113-0033, Japan.
| | - Kuo-Hui Wu
- Department of Chemistry, Graduate School of Science, The University of Tokyo, 7-3-1, Hongo, Bunkyo-ku, Tokyo 113-0033, Japan.
| | - Ryota Matsuoka
- Department of Chemistry, Graduate School of Science, The University of Tokyo, 7-3-1, Hongo, Bunkyo-ku, Tokyo 113-0033, Japan.
| | - Hiroaki Maeda
- Department of Chemistry, Graduate School of Science, The University of Tokyo, 7-3-1, Hongo, Bunkyo-ku, Tokyo 113-0033, Japan.
| | - Hiroshi Nishihara
- Department of Chemistry, Graduate School of Science, The University of Tokyo, 7-3-1, Hongo, Bunkyo-ku, Tokyo 113-0033, Japan.
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11
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Shimada M, Yamanoi Y, Nishihara H. Unusual Reactivity of Group 14 Hydrides toward Organic Halides: Synthetic Studies and Application to Functional Materials. J SYN ORG CHEM JPN 2016. [DOI: 10.5059/yukigoseikyokaishi.74.1098] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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12
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Oyama M, Ozawa H, Nagashima T, Haga MA, Ishida T. Effects of Fe cations in ruthenium-complex multilayers fabricated by a layer-by-layer method. Phys Chem Chem Phys 2016; 18:9005-12. [DOI: 10.1039/c5cp07970e] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Abstract
Molecular multilayers were fabricated using a Ru complex containing Fe cations on an indium tin oxide surface to control the properties of the Ru-complex multilayers such as the multilayer orientation and the electron transport.
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Affiliation(s)
- Makiko Oyama
- Nanomaterials Research Institute (NMRI)
- Department of Materials and Chemistry
- National Institute of Advanced Industrial Science and Technology (AIST)
- Tsukuba
- Japan
| | - Hiroaki Ozawa
- Department of Applied Chemistry
- Faculty of Science and Engineering
- Chuo University
- Bunkyo-ku
- Japan
| | - Takumi Nagashima
- Department of Applied Chemistry
- Faculty of Science and Engineering
- Chuo University
- Bunkyo-ku
- Japan
| | - Masa-aki Haga
- Department of Applied Chemistry
- Faculty of Science and Engineering
- Chuo University
- Bunkyo-ku
- Japan
| | - Takao Ishida
- Nanomaterials Research Institute (NMRI)
- Department of Materials and Chemistry
- National Institute of Advanced Industrial Science and Technology (AIST)
- Tsukuba
- Japan
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13
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Leusmann E, Schneck F, Dehnen S. Functionalization of Sn/S Clusters with Hetero- and Polyaromatics. Organometallics 2015. [DOI: 10.1021/acs.organomet.5b00295] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Eliza Leusmann
- Philipps-Universität Marburg, Fachbereich Chemie and Wissenschaftliches
Zentrum für Materialwissenschaften, Hans-Meerwein-Straße 4, D-35043 Marburg, Germany
| | - Felix Schneck
- Philipps-Universität Marburg, Fachbereich Chemie and Wissenschaftliches
Zentrum für Materialwissenschaften, Hans-Meerwein-Straße 4, D-35043 Marburg, Germany
| | - Stefanie Dehnen
- Philipps-Universität Marburg, Fachbereich Chemie and Wissenschaftliches
Zentrum für Materialwissenschaften, Hans-Meerwein-Straße 4, D-35043 Marburg, Germany
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14
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Sakamoto R, Katagiri S, Maeda H, Nishimori Y, Miyashita S, Nishihara H. Electron transport dynamics in redox-molecule-terminated branched oligomer wires on Au(111). J Am Chem Soc 2015; 137:734-41. [PMID: 25514860 DOI: 10.1021/ja509470w] [Citation(s) in RCA: 46] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Dendritic bis(terpyridine)iron(II) wires with terminal ferrocene units were synthesized on a Au(111) surface by stepwise coordination using a three-way terpyridine ligand, a ferrocene-modified terpyridine ligand, and Fe(II) ions. Potential-step chronoamperometry, which applied overpotentials to induce the redox of the terminal ferrocene, revealed an unusual electron-transport phenomenon. The current-time profile did not follow an exponential decay that is common for linear molecular wire systems. The nonexponentiality was more prominent in the forward electron-transport direction (from the terminal ferrocene to the gold electrode, oxidation) than in the reverse direction (from the gold electrode to the terminal ferrocenium, reduction). A plateau and a steep fall were observed in the former. We propose a simple electron transport mechanism based on intrawire electron hopping between two adjacent redox-active sites, and the numerical simulation thereof reproduced the series of "asymmetric" potential-step chronoamperometry results for both linear and branched bis(terpyridine)iron(II) wires.
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Affiliation(s)
- Ryota Sakamoto
- Department of Chemistry, Graduate School of Science, The University of Tokyo , 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-0033, Japan
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15
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Li F, Basile VM, Pekarek RT, Rose MJ. Steric spacing of molecular linkers on passivated Si(111) photoelectrodes. ACS APPLIED MATERIALS & INTERFACES 2014; 6:20557-20568. [PMID: 25354387 DOI: 10.1021/am506244m] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
Surfaces with high photoelectrochemical and electronic quality can be prepared by tethering small molecules to single-crystalline Si(111) surfaces using a two-step halogenation/alkylation method (by Lewis and co-workers).1-7 We report here that the surface coverage of custom-synthesized, phenyl-based molecular linkers can be controlled by varying the steric size of R-groups (R=CH3, C6H11, 2-ethylhexyl) at the periphery of the linker. Additionally, the linkers possess a para triflate group (-O2SCF3) that serves as a convenient analytical marker and as a point of covalent attachment for a redox active label. Quantitative X-ray photoelectron spectroscopy (XPS) measurements revealed that the surface coverage systematically varies according to the steric size of the linker: CH3 (6.7±0.8%), CyHex (2.9±1.2%), EtHex (2.1±0.9%). The stability of the photoelectrochemical cyclic voltammetry (PEC-CV) behavior was dependent on an additional methylation step (with CH3MgCl) to passivate residual Si(111)-Cl bonds. Subsequently, the triflate functional group was utilized to perform Pd-catalyzed Heck coupling of vinylferrocene to the surface-attached linkers. Ferrocene surface coverages measured from cyclic voltammetry on the ferrocene-functionalized surfaces Si(111)-8a/CH3-Fc (R=CH3) and Si(111)-8c/CH3-Fc (R=2-EtHex) are consistent with the corresponding Fe 2p XPS coverages and suggest a ∼1:1 conversion of surface triflate groups to vinyl-Fc sites. The surface defect densities of the linker/CH3 modified surfaces are dependent on the coverage and composition of the organic layer. Surface recombination velocity (SRV) measurements indicated that n-Si(111)-8a/CH3 and the ferrocene coupled n-Si(111)-8a/CH3-Fc exhibited relatively high surface carrier lifetimes (4.51 and 3.88 μs, respectively) and correspondingly low S values (3880 and 4510 cm s(-1)). Thus, the multistep, linker/Fc functionalized surfaces exhibit analogously low trap state densities as compared to the fully passivated n-Si(111)-CH3 surface.
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Affiliation(s)
- Feng Li
- Department of Chemistry, The University of Texas at Austin , Austin, Texas 78712-1224, United States
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16
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Nishihara H. Coordination Programming: A New Concept for the Creation of Multifunctional Molecular Systems. CHEM LETT 2014. [DOI: 10.1246/cl.140010] [Citation(s) in RCA: 76] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
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17
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Musumeci C, Zappalà G, Martsinovich N, Orgiu E, Schuster S, Quici S, Zharnikov M, Troisi A, Licciardello A, Samorì P. Nanoscale electrical investigation of layer-by-layer grown molecular wires. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2014; 26:1688-1693. [PMID: 24343948 DOI: 10.1002/adma.201304848] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/27/2013] [Revised: 11/06/2013] [Indexed: 06/03/2023]
Abstract
Nanoscopic metal-molecule-metal junctions consisting of Fe-bis(terpyridine)-based ordered nanostructures are grown in layer-by-layer fashion on a solid support. Hopping is demonstrated as the main charge-transport mechanism both experimentally and theoretically.
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Affiliation(s)
- Chiara Musumeci
- Nanochemistry Laboratory, ISIS & icFRC, Université de Strasbourg & CNRS, 8 allée Gaspard Monge, 67000, Strasbourg, France
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18
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Maeda H, Sakamoto R, Nishihara H. Surface-Junction Effects on Interfacial Electron Transfer between Bis(terpyridine)iron(II) and Hydrogen-Terminated Silicon(111) Electrode. Chemistry 2014; 20:2761-4. [DOI: 10.1002/chem.201304588] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2013] [Revised: 12/24/2013] [Indexed: 11/07/2022]
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19
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Barth BEK, Leusmann E, Harms K, Dehnen S. Towards the installation of transition metal ions on donor ligand decorated tin sulfide clusters. Chem Commun (Camb) 2014; 49:6590-2. [PMID: 23778901 DOI: 10.1039/c3cc43649g] [Citation(s) in RCA: 38] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Abstract
Decoration of tetrelchalcogenide T-E clusters with chelating donor ligands was achieved to capture transition metal ions on their surfaces. We demonstrate that by covalent linking of bispyridyl ligands to an Sn-S complex, [ZnX](+) units can be trapped and incorporated into the cluster framework. Intermediates that were identified using spectroscopy and/or X-ray diffraction gave insight into the formation processes.
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Affiliation(s)
- Beatrix E K Barth
- Philipps-Universität Marburg, Fachbereich Chemie and Wissenschaftliches Zentrum für Materialwissenschaften (WZMW), Hans-Meerwein-Strasse, D-35043 Marburg, Germany
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20
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Audi H, Chen Z, Charaf-Eddin A, D’Aléo A, Canard G, Jacquemin D, Siri O. Extendable nickel complex tapes that reach NIR absorptions. Chem Commun (Camb) 2014; 50:15140-3. [DOI: 10.1039/c4cc07353c] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
Abstract
Nickel complex oligomers with tunable length allow a fine control of the absorption bands from the UV to the NIR region.
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Affiliation(s)
- Hassib Audi
- CINaM
- UMR 7325 CNRS
- Aix-Marseille Université
- Campus Luminy
- case 913, 13288 Marseille Cedex 09, France
| | - Zhongrui Chen
- CINaM
- UMR 7325 CNRS
- Aix-Marseille Université
- Campus Luminy
- case 913, 13288 Marseille Cedex 09, France
| | - Azzam Charaf-Eddin
- CEISAM UMR CNRS 6230
- Université de Nantes
- 2
- rue de la Houssinière – BP 92208 – 4322 NANTES Cedex 3 (F) and Institut Universitaire de France
- 75005 Paris Cedex 05, France
| | - Anthony D’Aléo
- CINaM
- UMR 7325 CNRS
- Aix-Marseille Université
- Campus Luminy
- case 913, 13288 Marseille Cedex 09, France
| | - Gabriel Canard
- CINaM
- UMR 7325 CNRS
- Aix-Marseille Université
- Campus Luminy
- case 913, 13288 Marseille Cedex 09, France
| | - Denis Jacquemin
- CEISAM UMR CNRS 6230
- Université de Nantes
- 2
- rue de la Houssinière – BP 92208 – 4322 NANTES Cedex 3 (F) and Institut Universitaire de France
- 75005 Paris Cedex 05, France
| | - Olivier Siri
- CINaM
- UMR 7325 CNRS
- Aix-Marseille Université
- Campus Luminy
- case 913, 13288 Marseille Cedex 09, France
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Nishikawa M, Takara Y, Hattori Y, Nomoto K, Kusamoto T, Kume S, Nishihara H. Structural modification on copper(I)-pyridylpyrimidine complexes for modulation of rotational dynamics, redox properties, and phototriggered isomerization. Inorg Chem 2013; 52:8962-70. [PMID: 23883176 DOI: 10.1021/ic4011295] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
The redox properties of copper pyridylpyrimidine complexes, which undergo linkage isomerism based on pyrimidine ring rotation, were compared under different coordination environments. A newly synthesized compound, [Cu(Mepypm)(L(Mes))]BF4 (1·BF4, Mepypm = 4-methyl-2-(2'-pyridyl)pyrimidine, L(Mes) = 2,9-dimesityl-1,10-phenanthroline) was compared with previously reported complexes of [Cu(MepmMepy)(L(Mes))]BF4 (2·BF4, MepmMepy = 4-methyl-2-(6'-methyl-2'-pyridyl)pyrimidine), Cu(Mepypm)(DPEphos)]BF4 (3·BF4, DPEphos = bis[2-(diphenylphosphino)phenyl]ether), [Cu(Mepypm)(L(Anth))]BF4 (4·BF4, L(Anth) = 2,9-bis(9-anthryl)-1,10-phenanthroline), and [Cu(Mepypm)(L(Macro))]BF4 (5·BF4). Isomer ratios, isomerization dynamics, redox properties, and photoelectron conversion functions varied with the coordination structure. Methyl substituents on the 6-position of the pyridine moiety increased steric repulsion and contributed to quicker rotation, enhanced photoluminescence, and increased photodriven rotational isomerization.
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Affiliation(s)
- Michihiro Nishikawa
- Department of Chemistry, School of Science, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-0033, Japan
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Metal complex oligomer and polymer wires on electrodes: Tactical constructions and versatile functionalities. POLYMER 2013. [DOI: 10.1016/j.polymer.2013.04.019] [Citation(s) in RCA: 44] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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Sakamoto R, Katagiri S, Maeda H, Nishihara H. Triarylamine-conjugated Bis(terpyridine)–Iron(II) Complex Wires: Rapid and Long-range Electron-transport Ability. CHEM LETT 2013. [DOI: 10.1246/cl.130083] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Affiliation(s)
- Ryota Sakamoto
- Department of Chemistry, Graduate School of Science, The University of Tokyo
| | - Shunsuke Katagiri
- Department of Chemistry, Graduate School of Science, The University of Tokyo
| | - Hiroaki Maeda
- Department of Chemistry, Graduate School of Science, The University of Tokyo
| | - Hiroshi Nishihara
- Department of Chemistry, Graduate School of Science, The University of Tokyo
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Sakamoto R, Katagiri S, Maeda H, Nishihara H. Bis(terpyridine) metal complex wires: Excellent long-range electron transfer ability and controllable intrawire redox conduction on silicon electrode. Coord Chem Rev 2013. [DOI: 10.1016/j.ccr.2012.08.025] [Citation(s) in RCA: 108] [Impact Index Per Article: 9.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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Katagiri S, Sakamoto R, Maeda H, Nishimori Y, Kurita T, Nishihara H. Terminal Redox-Site Effect on the Long-Range Electron Conduction of Fe(tpy)2Oligomer Wires on a Gold Electrode. Chemistry 2013; 19:5088-96. [DOI: 10.1002/chem.201203913] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2012] [Indexed: 11/09/2022]
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Nishikawa M, Kume S, Nishihara H. Stimuli-responsive pyrimidine ring rotation in copper complexes for switching their physical properties. Phys Chem Chem Phys 2013; 15:10549-65. [DOI: 10.1039/c3cp44710c] [Citation(s) in RCA: 39] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
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Wu KH, Maeda H, Kambe T, Hoshiko K, Phua EJH, Sakamoto R, Nishihara H. A bis(terpyridine)iron network polymer on carbon for a potential energy storage material. Dalton Trans 2013; 42:15877-80. [DOI: 10.1039/c3dt51186c] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
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28
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Yamanoi Y, Sendo J, Kobayashi T, Maeda H, Yabusaki Y, Miyachi M, Sakamoto R, Nishihara H. A new method to generate arene-terminated Si(111) and Ge(111) surfaces via a palladium-catalyzed arylation reaction. J Am Chem Soc 2012. [PMID: 23181720 DOI: 10.1021/ja308606t] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Abstract
Formation of silicon-aryl and germanium-aryl direct bonds on the semiconductor surface is a key issue to realize molecular electronic devices, but the conventional methods based on radical intermediates have problems to accompany the side reactions. We developed the first example of versatile and efficient methods to form clean organic monolayers with Si-aryl and Ge-aryl bonds on hydrogen-terminated silicon and germanium surfaces by applying our original catalytic arylation reactions of hydrosilanes and hydrogermanes using Pd catalyst and base in homogeneous systems. We could immobilize aromatic groups with redox-active and photoluminescent properties, and further applied in the field of rigid π-conjugated redox molecular wire composites, as confirmed by the successive coordination of terpyridine molecules with transition metal ions. The surfaces were characterized using cyclic voltammetry (CV), water contact angle measurements, X-ray photoelectron spectroscopy (XPS), fluorescence spectroscopy, and atomic force microscopy (AFM). Especially, the AFM analysis of 17 nm-long metal complex molecular wires confirmed their vertical connection to the plane surface.
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Affiliation(s)
- Yoshinori Yamanoi
- Department of Chemistry, School of Science, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-0033, Japan.
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Nishimori Y, Maeda H, Katagiri S, Sendo J, Miyachi M, Sakamoto R, Yamanoi Y, Nishihara H. Synthesis and Electron Transfer Properties of Metal Complex Oligomer Wires with an Inherent Potential Gradient on Gold Electrode. ACTA ACUST UNITED AC 2012. [DOI: 10.1002/masy.201200016] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
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Schulz C, Nowak S, Fröhlich R, Ravoo BJ. Covalent layer-by-layer assembly of redox active molecular multilayers on silicon (100) by photochemical thiol-ene chemistry. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2012; 8:569-577. [PMID: 22183873 DOI: 10.1002/smll.201101822] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/02/2011] [Indexed: 05/31/2023]
Abstract
The fabrication of thin organic films covalently grafted onto silicon substrates is of significant interest, as they are expected to give access to a broad range of new materials for integration into microelectronic applications. Covalent layer-by-layer (LbL) assembly offers a high degree of freedom when designing such thin films. In this work an approach for the preparation of covalent redox active molecular multilayers on silicon (100) surfaces is presented using a highly branched decaallylferrocene and thiol-ene click chemistry. The multilayers are analyzed by ellipsometry, X-ray photoelectron sprectroscopy, and cyclic voltammetry. The results indicate that the multilayer growth is linear for at least sixteen layers and the density of ferrocenes per layer is in the range of 6 × 10⁻¹¹ mol cm⁻². Moreover, this method for LbL assembly is extended to surfaces which have been locally passivated by microcontact printing. By atomic force microscopy measurements it is possible to show that the covalent LbL deposition proceeds exclusively in the nonpassivated areas.
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Affiliation(s)
- Christian Schulz
- Organic Chemistry Institute and Center for Nanotechnology (CeNTech), Westfälische Wilhelms-Universität Münster, Corrensstrasse 40, 48149 Münster, Germany
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Sakamoto R, Tsukada S, Nishihara H. Multinuclear metalladithiolenes: focusing on electronic communication in mixed-valent states. Dalton Trans 2012; 41:10123-35. [DOI: 10.1039/c2dt30787a] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Wu KQ, Guo J, Yan JF, Xie LL, Xu FB, Bai S, Nockemann P, Yuan YF. Ruthenium(ii) bis(terpyridine) electron transfer complexes with alkynyl–ferrocenyl bridges: synthesis, structures, and electrochemical and spectroscopic studies. Dalton Trans 2012; 41:11000-8. [DOI: 10.1039/c2dt31091k] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
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Imaoka T, Inoue N, Yamamoto K. Electron-transfer through potential gradient based on a dendrimer architecture. Chem Commun (Camb) 2012; 48:7235-7. [DOI: 10.1039/c2cc31954c] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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