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Miller-Clark LA, Christ PE, Barbarini BT, Ren T. Bisaryl and Bisalkynyl Diruthenium (III,III) Compounds Based on an Electron-Deficient Building Block. Inorg Chem 2022; 61:14871-14879. [PMID: 36082487 DOI: 10.1021/acs.inorgchem.2c02498] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Reported herein is a new series of diruthenium(III,III) bisalkynyl and bisaryl diruthenium(III,III) compounds supported with 2-amino-3-(trifluoromethyl)pyridinate (amtfmp). Using Ru2(amtfmp)4Cl2 from a modified preparation, cis 2:2 Ru2(amtfmp)4(C≡CPh)2 (1), cis 2:2 Ru2(amtfmp)4(Ph)2 (2), and 3:1 Ru2(amtfmp)4(Ph)2 (3) were synthesized via a lithium-halogen exchange reaction using LiC2Ph and LiPh, respectively. Compounds 1-3 are all Ru2(III,III) species with a ground-state configuration of π4δ2(π*)4 (S = 0) and were characterized via mass spectrometry, electron absorption and 1H/19F NMR spectroscopies, and voltammetry. The molecular structures of 1-3 were established using single-crystal X-ray diffraction analysis, and preliminary density functional theory analysis was performed to elaborate the electronic structures of 1 and 2. Comparisons of the electrochemical properties of 1-3 against the Ru2(amtfmp)4Cl2 starting material reveal cathodic shifts of the Ru27+/6+ oxidation and the Ru26+/5+ and Ru25+/4+ reduction potentials. In comparison to related Ru2(III,III) bisalkynyl and bisaryl compounds, the electrode potentials for 1-3 are anodically shifted up to ca. 0.95 V, highlighting the strong electron-withdrawing nature of the amtfmp ligand.
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Affiliation(s)
- Lyndsy A Miller-Clark
- Department of Chemistry, Purdue University, West Lafayette, Indiana 47907, United States
| | - Peter E Christ
- Department of Chemistry, Purdue University, West Lafayette, Indiana 47907, United States
| | - Brian T Barbarini
- Department of Chemistry, Purdue University, West Lafayette, Indiana 47907, United States
| | - Tong Ren
- Department of Chemistry, Purdue University, West Lafayette, Indiana 47907, United States
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2
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Roy MD, Trenerry MJ, Thakuri B, MacMillan SN, Liptak MD, Lancaster KM, Berry JF. Electronic Structure of Ru 26+ Complexes with Electron-Rich Anilinopyridinate Ligands. Inorg Chem 2022; 61:3443-3457. [PMID: 35175754 DOI: 10.1021/acs.inorgchem.1c03346] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Diruthenium paddlewheel complexes supported by electron-rich anilinopyridinate (Xap) ligands were synthesized in the course of the first in-depth structural and spectroscopic interrogation of monocationic [Ru2(Xap)4Cl]+ species in the Ru26+ oxidation state. Despite paramagnetism of the compounds, 1H NMR spectroscopy proved highly informative for determining the isomerism of the Ru25+ and Ru26+ compounds. While most compounds are found to have the polar (4,0) geometry, with all four Xap ligands in the same orientation, some synthetic procedures resulted in a mixture of (4,0) and (3,1) isomers, most notably in the case of the parent compound Ru2(ap)4Cl. The isomerism of this compound has been overlooked in previous reports. Electrochemical studies demonstrate that oxidation potentials can be tuned by the installation of electron donating groups to the ligands, increasing accessibility of the Ru26+ oxidation state. The resulting Ru26+ monocations were found to have the expected (π*)2 ground state, and an in-depth study of the electronic transitions by Vis/NIR absorption and MCD spectroscopies with the aid of TD-DFT allowed for the assignment of the electronic spectra. The empty δ* orbital is the major acceptor orbital for the most prominent electronic transitions. Both Ru25+ and Ru26+ compounds were studied by Ru K-edge X-ray absorption spectroscopy; however, the rising edge energy is insensitive to redox changes in the compounds due to the broad line shape observed for 4d transition metal K-edges. DFT calculations indicate the presence of ligand orbitals at the frontier level, suggesting that further oxidation beyond Ru26+ will be ligand-centered rather than metal-centered.
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Affiliation(s)
- Michael D Roy
- Department of Chemistry, University of Wisconsin-Madison, 1101 University Avenue, Madison, Wisconsin 53706, United States
| | - Michael J Trenerry
- Department of Chemistry, University of Wisconsin-Madison, 1101 University Avenue, Madison, Wisconsin 53706, United States
| | - Biswash Thakuri
- Department of Chemistry, University of Vermont, Burlington, Vermont 05405, United States
| | - Samantha N MacMillan
- Department of Chemistry & Chemical Biology, Baker Laboratory, Cornell University, Ithaca, New York 14853, United States
| | - Matthew D Liptak
- Department of Chemistry, University of Vermont, Burlington, Vermont 05405, United States
| | - Kyle M Lancaster
- Department of Chemistry & Chemical Biology, Baker Laboratory, Cornell University, Ithaca, New York 14853, United States
| | - John F Berry
- Department of Chemistry, University of Wisconsin-Madison, 1101 University Avenue, Madison, Wisconsin 53706, United States
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3
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Naqi M, Kwon N, Jung SH, Pujar P, Cho HW, Cho YI, Cho HK, Lim B, Kim S. High-Performance Non-Volatile InGaZnO Based Flash Memory Device Embedded with a Monolayer Au Nanoparticles. NANOMATERIALS (BASEL, SWITZERLAND) 2021; 11:1101. [PMID: 33923237 PMCID: PMC8146410 DOI: 10.3390/nano11051101] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/25/2021] [Revised: 04/22/2021] [Accepted: 04/22/2021] [Indexed: 11/16/2022]
Abstract
Non-volatile memory (NVM) devices based on three-terminal thin-film transistors (TFTs) have gained extensive interest in memory applications due to their high retained characteristics, good scalability, and high charge storage capacity. Herein, we report a low-temperature (<100 °C) processed top-gate TFT-type NVM device using indium gallium zinc oxide (IGZO) semiconductor with monolayer gold nanoparticles (AuNPs) as a floating gate layer to obtain reliable memory operations. The proposed NVM device exhibits a high memory window (ΔVth) of 13.7 V when it sweeps from -20 V to +20 V back and forth. Additionally, the material characteristics of the monolayer AuNPs (floating gate layer) and IGZO film (semiconductor layer) are confirmed using transmission electronic microscopy (TEM), atomic force microscopy (AFM), and x-ray photoelectron spectroscopy (XPS) techniques. The memory operations in terms of endurance and retention are obtained, revealing highly stable endurance properties of the device up to 100 P/E cycles by applying pulses (±20 V, duration of 100 ms) and reliable retention time up to 104 s. The proposed NVM device, owing to the properties of large memory window, stable endurance, and high retention time, enables an excellent approach in futuristic non-volatile memory technology.
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Affiliation(s)
| | | | | | | | | | | | | | - Byungkwon Lim
- Department of Advanced Materials Science and Engineering, Sungkyunkwan University, Suwon 16419, Korea; (M.N.); (N.K.); (S.H.J.); (P.P.); (H.W.C.); (Y.I.C.); (H.K.C.)
| | - Sunkook Kim
- Department of Advanced Materials Science and Engineering, Sungkyunkwan University, Suwon 16419, Korea; (M.N.); (N.K.); (S.H.J.); (P.P.); (H.W.C.); (Y.I.C.); (H.K.C.)
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Gorenskaia E, Naher M, Daukiya L, Moggach SA, Costa Milan D, Vezzoli A, Lambert CJ, Nichols RJ, Becker T, Low PJ. Experimental Validation of Quantum Circuit Rules in Molecular Junctions. Aust J Chem 2021. [DOI: 10.1071/ch21136] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
Abstract
A series of diarylacetylene (tolane) derivatives functionalised at the 4- and 4′-positions by thiolate, thioether, or amine groups capable of serving as anchor groups to secure the molecules within a molecular junction have been prepared and characterised. The series of compounds have a general form X-B-X, Y-B-Y, and X-B-Y where X and Y represent anchor groups and B the molecular bridge. The single-molecule conductance values determined by the scanning tunnelling microscope break-junction method are found to be in excellent agreement with the predictions made on the basis of a recently proposed ‘molecular circuit law’, which states ‘the conductance of an asymmetric molecule X-B-Y is the geometric mean of the conductance of the two symmetric molecules derived from it, and .’ The experimental verification of the circuit law, which holds for systems in which the constituent moieties X, B, and Y are weakly coupled and whose conductance takes place via off-resonance tunnelling, gives further confidence in the use of this relationship in the design of future compounds for use in molecular electronics research.
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Raghavan A, Ren T. Bisaryl Diruthenium(III) Paddlewheel Complexes: Synthesis and Characterization. Organometallics 2019. [DOI: 10.1021/acs.organomet.9b00555] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Adharsh Raghavan
- Department of Chemistry, Purdue University, West Lafayette, Indiana 47907, United States
| | - Tong Ren
- Department of Chemistry, Purdue University, West Lafayette, Indiana 47907, United States
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6
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Banziger SD, Ren T. Syntheses, structures and bonding of 3d metal alkynyl complexes of cyclam and its derivatives. J Organomet Chem 2019. [DOI: 10.1016/j.jorganchem.2019.01.024] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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7
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Mash BL, Ren T. Co(III) phenylacetylide complexes supported by tetraazamacrocyclic ligands: Syntheses and characterizations. J Organomet Chem 2019. [DOI: 10.1016/j.jorganchem.2018.11.008] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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8
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Raghavan A, Mash BL, Ren T. Forging Ru–Csp2 Bonds in Paddlewheel Complexes Using the Lithium–Halogen Exchange Reaction. Inorg Chem 2019; 58:2618-2626. [PMID: 30698963 DOI: 10.1021/acs.inorgchem.8b03216] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Adharsh Raghavan
- Department of Chemistry, Purdue University, West Lafayette, Indiana 47907, United States
| | - Brandon L. Mash
- Department of Chemistry, Purdue University, West Lafayette, Indiana 47907, United States
| | - Tong Ren
- Department of Chemistry, Purdue University, West Lafayette, Indiana 47907, United States
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9
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Judkins EC, Zeller M, Ren T. Synthesis and Characterizations of Macrocyclic Cr(III) and Co(III) 1-Ethynyl Naphthalene and 9-Ethynyl Anthracene Complexes: An Investigation of Structural and Spectroscopic Properties. Inorg Chem 2018; 57:2249-2259. [PMID: 29411976 DOI: 10.1021/acs.inorgchem.7b03128] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Eileen C. Judkins
- Department of Chemistry, Purdue University, West Lafayette, Indiana 47907, United States
| | - Matthias Zeller
- Department of Chemistry, Purdue University, West Lafayette, Indiana 47907, United States
| | - Tong Ren
- Department of Chemistry, Purdue University, West Lafayette, Indiana 47907, United States
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10
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Milić J, Zalibera M, Talaat D, Nomrowski J, Trapp N, Ruhlmann L, Boudon C, Wenger OS, Savitsky A, Lubitz W, Diederich F. Photoredox-Switchable Resorcin[4]arene Cavitands: Radical Control of Molecular Gripping Machinery via Hydrogen Bonding. Chemistry 2017; 24:1431-1440. [DOI: 10.1002/chem.201704788] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/10/2017] [Indexed: 01/10/2023]
Affiliation(s)
- Jovana Milić
- Laboratory of Organic Chemistry; ETH Zurich; Vladimir-Prelog-Weg 3 8093 Zurich Switzerland
| | - Michal Zalibera
- Institute of Physical Chemistry and Chemical Physics; Slovak University of Technology; Radlinského 9 81237 Bratislava Slovakia
- Max Planck Institute for Chemical Energy Conversion; Stiftstrasse 34-36 45470 Mülheim an der Ruhr Germany
| | - Darius Talaat
- Laboratory of Organic Chemistry; ETH Zurich; Vladimir-Prelog-Weg 3 8093 Zurich Switzerland
| | - Julia Nomrowski
- Department of Chemistry; University of Basel; St. Johanns-Ring 19 4056 Basel Switzerland
| | - Nils Trapp
- Laboratory of Organic Chemistry; ETH Zurich; Vladimir-Prelog-Weg 3 8093 Zurich Switzerland
| | - Laurent Ruhlmann
- Laboratoire d'Électrochimie et Chimie Physique du Corps Solide, Institut de Chimie de Strasbourg; Université de Strasbourg; 4 rue Blaise Pascal, CS 90032 67081 Strasbourg France
| | - Corinne Boudon
- Laboratoire d'Électrochimie et Chimie Physique du Corps Solide, Institut de Chimie de Strasbourg; Université de Strasbourg; 4 rue Blaise Pascal, CS 90032 67081 Strasbourg France
| | - Oliver S. Wenger
- Department of Chemistry; University of Basel; St. Johanns-Ring 19 4056 Basel Switzerland
| | - Anton Savitsky
- Max Planck Institute for Chemical Energy Conversion; Stiftstrasse 34-36 45470 Mülheim an der Ruhr Germany
| | - Wolfgang Lubitz
- Max Planck Institute for Chemical Energy Conversion; Stiftstrasse 34-36 45470 Mülheim an der Ruhr Germany
| | - François Diederich
- Laboratory of Organic Chemistry; ETH Zurich; Vladimir-Prelog-Weg 3 8093 Zurich Switzerland
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11
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Ying JW, Liskey CW, Natoli SN, Betancourt SK, Liu L, Fanwick PE, Ren T. Study of small oligomers based on Ru2(DMBA)4 and meta-phenylene diethynylene. J Organomet Chem 2017. [DOI: 10.1016/j.jorganchem.2017.03.011] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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12
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13
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Hacker CA, Bruce RC, Pookpanratana SJ. Interface Engineering for Nanoelectronics. ECS TRANSACTIONS 2017; 80:119-131. [PMID: 29276553 PMCID: PMC5740487 DOI: 10.1149/08001.0119ecst] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Innovation in the electronics industry is tied to interface engineering as devices increasingly incorporate new materials and shrink. Molecular layers offer a versatile means of tuning interfacial electronic, chemical, physical, and magnetic properties enabled by a wide variety of molecules available. This paper will describe three instances where we manipulate molecular interfaces with a specific focus on the nanometer scale characterization and the impact on the resulting performance. The three primary themes include, 1-designer interfaces, 2-electronic junction formation, and 3-advancing metrology for nanoelectronics. We show the ability to engineer interfaces through a variety of techniques and demonstrate the impact on technologies such as molecular memory and spin injection for organic electronics. Underpinning the successful modification of interfaces is the ability to accurately characterize the chemical and electronic properties and we will highlight some measurement advances key to our understanding of the interface engineering for nanoelectronics.
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Affiliation(s)
- C A Hacker
- Engineering Physics Division, Physical Measurements Laboratory, National Institute of Standards and Technology, Gaithersburg, Maryland 20899, USA
| | - R C Bruce
- Engineering Physics Division, Physical Measurements Laboratory, National Institute of Standards and Technology, Gaithersburg, Maryland 20899, USA
| | - S J Pookpanratana
- Engineering Physics Division, Physical Measurements Laboratory, National Institute of Standards and Technology, Gaithersburg, Maryland 20899, USA
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14
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Tyler SF, Judkins EC, Song Y, Cao F, McMillin DR, Fanwick PE, Ren T. Cr(III)-HMC (HMC = 5,5,7,12,12,14-Hexamethyl-1,4,8,11-tetraazacyclotetradecane) Alkynyl Complexes: Preparation and Emission Properties. Inorg Chem 2016; 55:8736-43. [PMID: 27529498 DOI: 10.1021/acs.inorgchem.6b01285] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Sarah F. Tyler
- Department
of Chemistry, Purdue University, West Lafayette, Indiana 47907, United States
| | - Eileen C. Judkins
- Department
of Chemistry, Purdue University, West Lafayette, Indiana 47907, United States
| | - You Song
- School
of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210093, China
| | - Fan Cao
- School
of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210093, China
| | - David R. McMillin
- Department
of Chemistry, Purdue University, West Lafayette, Indiana 47907, United States
| | - Phillip E. Fanwick
- Department
of Chemistry, Purdue University, West Lafayette, Indiana 47907, United States
| | - Tong Ren
- Department
of Chemistry, Purdue University, West Lafayette, Indiana 47907, United States
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15
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Vilan A, Visoly-Fisher I. Molecular functionalization of surfaces for device applications. JOURNAL OF PHYSICS. CONDENSED MATTER : AN INSTITUTE OF PHYSICS JOURNAL 2016; 28:090301. [PMID: 26882195 DOI: 10.1088/0953-8984/28/9/090301] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Affiliation(s)
- Ayelet Vilan
- Department of Physical Chemistry, Weizmann Institute of Science, Rehovot 76100, Israel. Department of Solar Energy and Environmental Physics, Swiss Institute for Dryland Environmental and Energy Research, J. Blaustein Institutes for Desert Research and Ilse, Katz Inst. of Nano-Science and Technology, Ben-Gurion University of the Negev Sede Boqer campus, Midreshet Ben-Gurion 8499000, Israel
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