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Ferri N, Algethami N, Vezzoli A, Sangtarash S, McLaughlin M, Sadeghi H, Lambert CJ, Nichols RJ, Higgins SJ. Hemilabile Ligands as Mechanosensitive Electrode Contacts for Molecular Electronics. Angew Chem Int Ed Engl 2019; 58:16583-16589. [PMID: 31364249 PMCID: PMC6899542 DOI: 10.1002/anie.201906400] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/22/2019] [Indexed: 11/21/2022]
Abstract
Single-molecule junctions that are sensitive to compression or elongation are an emerging class of nanoelectromechanical systems (NEMS). Although the molecule-electrode interface can be engineered to impart such functionality, most studies to date rely on poorly defined interactions. We focused on this issue by synthesizing molecular wires designed to have chemically defined hemilabile contacts based on (methylthio)thiophene moieties. We measured their conductance as a function of junction size and observed conductance changes of up to two orders of magnitude as junctions were compressed and stretched. Localised interactions between weakly coordinating thienyl sulfurs and the electrodes are responsible for the observed effect and allow reversible monodentate⇄bidentate contact transitions as the junction is modulated in size. We observed an up to ≈100-fold sensitivity boost of the (methylthio)thiophene-terminated molecular wire compared with its non-hemilabile (methylthio)benzene counterpart and demonstrate a previously unexplored application of hemilabile ligands to molecular electronics.
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Affiliation(s)
- Nicolò Ferri
- Department of ChemistryUniversity of LiverpoolCrown StreetLiverpoolL69 7ZDUK
| | | | - Andrea Vezzoli
- Department of ChemistryUniversity of LiverpoolCrown StreetLiverpoolL69 7ZDUK
| | - Sara Sangtarash
- Department of PhysicsLancaster UniversityLancasterLA1 4YBUK
- School of EngineeringUniversity of WarwickCoventryCV4 7ALUK
| | - Maeve McLaughlin
- Department of ChemistryUniversity of LiverpoolCrown StreetLiverpoolL69 7ZDUK
| | - Hatef Sadeghi
- Department of PhysicsLancaster UniversityLancasterLA1 4YBUK
- School of EngineeringUniversity of WarwickCoventryCV4 7ALUK
| | | | - Richard J. Nichols
- Department of ChemistryUniversity of LiverpoolCrown StreetLiverpoolL69 7ZDUK
| | - Simon J. Higgins
- Department of ChemistryUniversity of LiverpoolCrown StreetLiverpoolL69 7ZDUK
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Ferri N, Algethami N, Vezzoli A, Sangtarash S, McLaughlin M, Sadeghi H, Lambert CJ, Nichols RJ, Higgins SJ. Hemilabile Ligands as Mechanosensitive Electrode Contacts for Molecular Electronics. Angew Chem Int Ed Engl 2019. [DOI: 10.1002/ange.201906400] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Nicolò Ferri
- Department of ChemistryUniversity of Liverpool Crown Street Liverpool L69 7ZD UK
| | - Norah Algethami
- Department of PhysicsLancaster University Lancaster LA1 4YB UK
| | - Andrea Vezzoli
- Department of ChemistryUniversity of Liverpool Crown Street Liverpool L69 7ZD UK
| | - Sara Sangtarash
- Department of PhysicsLancaster University Lancaster LA1 4YB UK
- School of EngineeringUniversity of Warwick Coventry CV4 7AL UK
| | - Maeve McLaughlin
- Department of ChemistryUniversity of Liverpool Crown Street Liverpool L69 7ZD UK
| | - Hatef Sadeghi
- Department of PhysicsLancaster University Lancaster LA1 4YB UK
- School of EngineeringUniversity of Warwick Coventry CV4 7AL UK
| | | | - Richard J. Nichols
- Department of ChemistryUniversity of Liverpool Crown Street Liverpool L69 7ZD UK
| | - Simon J. Higgins
- Department of ChemistryUniversity of Liverpool Crown Street Liverpool L69 7ZD UK
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Štěpnička P, Císařová I. Selective borane reduction of phosphinoferrocene carbaldehydes to phosphinoalcohol–borane adducts. The coordination behaviour of 1-(diphenylphosphino)- 1′-(methoxymethyl)ferrocene, a new ferrocene O,P-hybrid donor prepared from such an adduct. Dalton Trans 2013; 42:3373-89. [DOI: 10.1039/c2dt32511j] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Bayly SR, Cowley AR, Dilworth JR, Ward CV. Synthesis, Crystal Structures and NMR Spectroscopic Studies on Ruthenium Complexes with Phosphanylacetal and Phosphanylthioacetal Ligands. Eur J Inorg Chem 2009. [DOI: 10.1002/ejic.200900451] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Simon R. Bayly
- Department of Chemistry, University of Oxford, Chemistry Research Laboratory, Mansfiled Road, OX1 3TA, United Kingdom, Fax: +44‐1865‐272690
| | - Andrew R. Cowley
- Department of Chemistry, University of Oxford, Chemistry Research Laboratory, Mansfiled Road, OX1 3TA, United Kingdom, Fax: +44‐1865‐272690
| | - Jonathan R. Dilworth
- Department of Chemistry, University of Oxford, Chemistry Research Laboratory, Mansfiled Road, OX1 3TA, United Kingdom, Fax: +44‐1865‐272690
| | - Caroline V. Ward
- Department of Chemistry, University of Oxford, Chemistry Research Laboratory, Mansfiled Road, OX1 3TA, United Kingdom, Fax: +44‐1865‐272690
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Slone CS, Weinberger DA, Mirkin CA. The Transition Metal Coordination Chemistry of Hemilabile Ligands. PROGRESS IN INORGANIC CHEMISTRY 2007. [DOI: 10.1002/9780470166499.ch3] [Citation(s) in RCA: 264] [Impact Index Per Article: 15.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
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Ruthenium complexes containing the hemilabile ligand PPh2(CH2)P(O)PPh2 (dppmO): reactivity towards CO and X-ray molecular structures of tcc-RuCl2(η2-dppmO)2 and mer-RuCl3(η1,η2-dppmO)2. Polyhedron 2005. [DOI: 10.1016/j.poly.2005.02.026] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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Khoshbin MS, Ovchinnikov MV, Mirkin CA, Zakharov LN, Rheingold AL. Binuclear Ruthenium Macrocycles Formed via the Weak-Link Approach. Inorg Chem 2005; 44:496-501. [PMID: 15679377 DOI: 10.1021/ic048975y] [Citation(s) in RCA: 31] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
The "weak-link approach" for the synthesis of metallomacrocycles has been used to synthesize a series of novel Ru(II) macrocycles in high yield. RuCl2(PPh3)3 has been reacted with two different phosphino-alkyl-ether hemilabile ligands, 1,4-(PPh2(CH2)2O)2C6H4 and 1,4-(PPh2(CH2)2OCH2)2C6H4. The hemilabile bidentate ligand coordinates to Ru(II) centers through both the P and O atoms to form bimetallic "condensed intermediates". The weak Ru-O bonds have been selectively cleaved with CO, 1,2-diaminopropane, and pyridine to yield large open macrocycles. This is the first example of the weak-link approach employed to synthesize macrocycles with Ru, and metal centers in general that have more than four coordination sites.
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Affiliation(s)
- Meisa S Khoshbin
- Department of Chemistry and Institute for Nanotechnology, Northwestern University, 2145 Sheridan Road, Evanston, Illinois 60208, USA
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Lindner E, Wald J, Eichele K, Fawzi R. Synthesis, structure, and reactivity of ruthenium(II) complexes with a hemilabile tetradentate etherdiphosphine ligand. J Organomet Chem 2000. [DOI: 10.1016/s0022-328x(00)00065-6] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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Morandini F, Dondana A, Munari I, Pilloni G, Consiglio G, Sironi A, Moret M. Pentamethylcyclopentadienyl ruthenium(II) complexes containing chiral diphospines: synthesis, characterisation and electrochemical behaviour. X-ray structure of (η5-C5Me5)Ru{(S,S)-Ph2PCH(CH3)CH(CH3)PPh2}Cl. Inorganica Chim Acta 1998. [DOI: 10.1016/s0020-1693(98)00219-9] [Citation(s) in RCA: 22] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Lindner E, Pautz S, Fawzi R, Steimann M. Behavior of (Ether−phosphine)ruthenium(II) Complexes [(η6-C6Me6)RuH(P⌒O)][BF4] Containing Reactive Ru−O and Ru−H Bonds toward Various Small Molecules and Their Application in Ring-Opening Metathesis Polymerization. Organometallics 1998. [DOI: 10.1021/om980001o] [Citation(s) in RCA: 39] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Ekkehard Lindner
- Institut für Anorganische Chemie der Universität, Auf der Morgenstelle 18, D-72076 Tübingen, Germany
| | - Stefan Pautz
- Institut für Anorganische Chemie der Universität, Auf der Morgenstelle 18, D-72076 Tübingen, Germany
| | - Riad Fawzi
- Institut für Anorganische Chemie der Universität, Auf der Morgenstelle 18, D-72076 Tübingen, Germany
| | - Manfred Steimann
- Institut für Anorganische Chemie der Universität, Auf der Morgenstelle 18, D-72076 Tübingen, Germany
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Reactivity and chemical exchange processes of bis(ether-phosphine) iridium(III) complexes. Inorganica Chim Acta 1998. [DOI: 10.1016/s0020-1693(97)05769-1] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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Jablonski C, Zhou Z, Bridson J. Synthesis, structure and reactivity of bidentate 2-ketopyrrolyl cobalt(III) phosphonates and phosphinates. Inorganica Chim Acta 1997. [DOI: 10.1016/s0020-1693(96)05184-5] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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Lindner E, Pautz S, Haustein M. Dynamic, reactivity and catalytic behavior of pseudo-undercoordinated ruthenium and rhodium complexes stabilized by intramolecular solvents. Coord Chem Rev 1996. [DOI: 10.1016/s0010-8545(96)90180-0] [Citation(s) in RCA: 101] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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Reactions of ether-phosphine ruthenium hydride complexes with carbon disulfide and phenylacetylene: crystal structures of Ru(CO) Cl(P ∼ O)3(η2-S2CH and Ru(CO) Cl(P ∼ O)2(η2-S2CH). J Organomet Chem 1996. [DOI: 10.1016/0022-328x(95)05950-t] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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Lindner E, Pautz S, Haustein M. Reactivity of the RuO bond in η2(O,P)-chelated mono(ether-phospine) (pentamethylcyclopentadienyl) ruthenium(II) complexes. J Organomet Chem 1996. [DOI: 10.1016/0022-328x(95)05817-9] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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Chemie polyfunktioneller Molek�le, 121. Mitt. Cyclopentadienylruthenium(II)-Komplexe desBis(diphenylphosphanyl)amins und -amids sowie des N,N-Bis(diphenylphosphanyl)-methylamins und -ethylamins. MONATSHEFTE FUR CHEMIE 1996. [DOI: 10.1007/bf00807018] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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Lindner E, Haustein M, Mayer HA, Schneller T, Fawzi R, Steimann M. The solid state structure of the cation bis[1,3-dioxane-2-ylmethyl) diphenylphosphine-P; O′, P′]-(pentamethylcyclopentadienyl) ruthenium(II). Inorganica Chim Acta 1995. [DOI: 10.1016/0020-1693(94)04323-n] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Braun T, Steinert P, Werner H. Vinylidene transition metal complexes XXXIV the preparation and structure of neutral vinylidene and allenylidene ruthenium(II) compounds of the half-sandwich type containing iPr2PCH2CO2Me as supporting ligand. J Organomet Chem 1995. [DOI: 10.1016/0022-328x(94)00015-5] [Citation(s) in RCA: 55] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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