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Hamon P, Shaw‐Taberlet JA, Toupet L, Stueger H, Hamon J, Lapinte C. Electronic Interactions in the Electroactive Iron σ‐Ethynyl‐2‐Phenyltetramethyldisilanes [Cp*(dppe)Fe–C≡C–{Si(CH
3
)
2
}
2
–1,4‐C
6
H
4
X](PF
6
)
n
(
n
= 0, 1). Eur J Inorg Chem 2017. [DOI: 10.1002/ejic.201700094] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Paul Hamon
- Institut des Sciences Chimiques de Rennes, UMR 6226 CNRS Université de Rennes 1 35042 Rennes France
| | | | - Loic Toupet
- Institut de Phisique de Rennes, UMR 6251 CNRS Université de Rennes 1 35042 Rennes France
| | - Harald Stueger
- Institut für Anorganische Chemie Technische Universität Graz Stremayrgasse 16 A‐8010 Graz Austria
| | - Jean‐René Hamon
- Institut des Sciences Chimiques de Rennes, UMR 6226 CNRS Université de Rennes 1 35042 Rennes France
| | - Claude Lapinte
- Institut des Sciences Chimiques de Rennes, UMR 6226 CNRS Université de Rennes 1 35042 Rennes France
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Surampudi S, Yeh ML, Siegler MA, Hardigree JFM, Kasl TA, Katz HE, Klausen RS. Increased carrier mobility in end-functionalized oligosilanes. Chem Sci 2015; 6:1905-1909. [PMID: 28717452 PMCID: PMC5501097 DOI: 10.1039/c4sc03274h] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2014] [Accepted: 12/29/2014] [Indexed: 11/21/2022] Open
Abstract
We show that a class of oligosilane-arene σ, π-hybrid materials exhibits distinct and enhanced solid-state electronic properties relative to its parent components. In the single crystal structure, the σ-conjugation axis of one molecule points towards the π-face of a neighboring molecule due to an unusual gauche conformation. This organization is hypothesized to be beneficial for charge transport. We show that solution-deposited crystalline films of the hybrid materials show up to a 100-fold increase in space-charge limited current (SCLC) mobility relative to literature reports of photoinduced hole transport in oligosilane films. The discovery that σ, π-hybrids are more than the sum of their parts offers a design opportunity for new materials.
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Affiliation(s)
- S Surampudi
- Department of Chemistry , Johns Hopkins University , 3400 N. Charles St , Baltimore , MD 21218 , USA .
| | - M-L Yeh
- Department of Chemistry , Johns Hopkins University , 3400 N. Charles St , Baltimore , MD 21218 , USA .
- Department of Materials Science and Engineering , Johns Hopkins University , 3400 N. Charles St , Baltimore , MD 21218 , USA
| | - M A Siegler
- Department of Chemistry , Johns Hopkins University , 3400 N. Charles St , Baltimore , MD 21218 , USA .
| | - J F Martinez Hardigree
- Department of Materials Science and Engineering , Johns Hopkins University , 3400 N. Charles St , Baltimore , MD 21218 , USA
| | - T A Kasl
- Department of Chemistry , Johns Hopkins University , 3400 N. Charles St , Baltimore , MD 21218 , USA .
| | - H E Katz
- Department of Chemistry , Johns Hopkins University , 3400 N. Charles St , Baltimore , MD 21218 , USA .
- Department of Materials Science and Engineering , Johns Hopkins University , 3400 N. Charles St , Baltimore , MD 21218 , USA
| | - R S Klausen
- Department of Chemistry , Johns Hopkins University , 3400 N. Charles St , Baltimore , MD 21218 , USA .
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Emanuelsson R, Löfås H, Wallner A, Nauroozi D, Baumgartner J, Marschner C, Ahuja R, Ott S, Grigoriev A, Ottosson H. Configuration- and Conformation-Dependent Electronic-Structure Variations in 1,4-Disubstituted Cyclohexanes Enabled by a Carbon-to-Silicon Exchange. Chemistry 2014; 20:9304-11. [DOI: 10.1002/chem.201402610] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2014] [Indexed: 11/09/2022]
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Stueger H, Hasken B, Haas M, Rausch M, Fischer R, Torvisco A. Photoinduced Brook-Type Rearrangement of Acylcyclopolysilanes. Organometallics 2014; 33:231-239. [PMID: 24465075 PMCID: PMC3893937 DOI: 10.1021/om4009845] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/08/2013] [Indexed: 11/30/2022]
Abstract
Previously unknown 1,1,4-tris(trimethylsilyl)-4-acyldodecamethylcyclohexasilanes (Me3Si)2Si6Me12(Me3Si)COR (16a, R = tert-butyl; 16b, R = 1-adamantyl) have been synthesized by the reaction of the potassium silanides (Me3Si)2Si6Me12(Me3Si)K with acid chlorides ClCOR, and their photochemical rearrangement reactions have been studied. The molecular structures of 16a,b as determined by single-crystal X-ray diffraction analysis exhibit an unusual twist-boat conformation of the cyclohexasilane ring. When 16a,b were photolyzed with λ >300 nm radiation, they underwent Brook type 1,3-Si → O migration reactions to generate the cyclohexasilanes 17a,b with exocyclic Si=C bonds along with smaller amounts of the ring-enlarged species 19a,b with endocyclic Si=C double bonds. While 17a,b were stable enough to allow characterization by NMR and UV absorption spectroscopy, the less stable products 19a,b could only be observed in the form of their methanol adducts.
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Affiliation(s)
- Harald Stueger
- Institute of Inorganic Chemistry, Graz University of Technology , Stremayrgasse 9, A-8010 Graz, Austria
| | - Bernd Hasken
- Institute of Inorganic Chemistry, Graz University of Technology , Stremayrgasse 9, A-8010 Graz, Austria
| | - Michael Haas
- Institute of Inorganic Chemistry, Graz University of Technology , Stremayrgasse 9, A-8010 Graz, Austria
| | - Martin Rausch
- Institute of Inorganic Chemistry, Graz University of Technology , Stremayrgasse 9, A-8010 Graz, Austria
| | - Roland Fischer
- Institute of Inorganic Chemistry, Graz University of Technology , Stremayrgasse 9, A-8010 Graz, Austria
| | - Ana Torvisco
- Institute of Inorganic Chemistry, Graz University of Technology , Stremayrgasse 9, A-8010 Graz, Austria
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Stueger H, Hasken B, Gross U, Fischer R, Torvisco Gomez A. Synthesis and Properties of Bridgehead-Functionalized Permethylbicyclo[2.2.2]octasilanes. Organometallics 2013; 32:4490-4500. [PMID: 23997386 PMCID: PMC3755819 DOI: 10.1021/om400184y] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2013] [Indexed: 11/28/2022]
Abstract
A series of previously unknown bridgehead-functionalized bicyclo[2.2.2]octasilanes, Me3Si-Si8Me12-X, X-Si8Me12-X, and X-Si8Me12-Y [X, Y = -SiMe n Ph3-n (n = 1, 2) (2, 3, 10), -SiMe2Fc (Fc = ferrocenyl) (4, 11, 13, 14), -COR (R = Me, tBu) (6, 7, 12), COOMe (8), COOH (9)], have been prepared by the reaction of the silanides Me3Si-Si8Me12-K+ or K+-Si8Me12-K+ with proper electrophiles and fully characterized. The molecular structures of 2, 3, 4, 6, 8, 9, 10, and 13 as determined by single-crystal X-ray diffraction analysis exhibit a slightly twisted structure of the bicyclooctasilane cage. Endocyclic bond lengths, bond angles, and dihedral angles are not influenced considerably by the substituents attached to the bridgehead silicon atoms. Due to σ(SiSi)/π(aryl) conjugation, a 20-30 nm bathochromic shift of the longest wavelength UV absorption band relative to Me3Si-Si8Me12-SiMe3 (1) is evident in the UV absorption spectra of the phenyl and ferrocenyl derivatives. Otherwise, UV absorption data do not support the assumption of aryl/aryl or aryl/C=O interaction via the σ(SiSi) bicyclooctasilane framework.
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Affiliation(s)
- Harald Stueger
- Institute of Inorganic Chemistry, Graz University of
Technology, Stremayrgasse 9, A-8010 Graz, Austria
| | - Bernd Hasken
- Institute of Inorganic Chemistry, Graz University of
Technology, Stremayrgasse 9, A-8010 Graz, Austria
| | - Uwe Gross
- Institute of Inorganic Chemistry, Graz University of
Technology, Stremayrgasse 9, A-8010 Graz, Austria
| | - Roland Fischer
- Institute of Inorganic Chemistry, Graz University of
Technology, Stremayrgasse 9, A-8010 Graz, Austria
| | - Ana Torvisco Gomez
- Institute of Inorganic Chemistry, Graz University of
Technology, Stremayrgasse 9, A-8010 Graz, Austria
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Liu YP, Li ZQ, Tan YX, Zhang ZJ. Ferrocenyl(methyl)diphenylsilane. Acta Crystallogr Sect E Struct Rep Online 2011; 67:m636. [PMID: 21754344 PMCID: PMC3089205 DOI: 10.1107/s1600536811014796] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2011] [Accepted: 04/20/2011] [Indexed: 11/12/2022]
Abstract
In the title molecule, [Fe(C5H5)(C18H17Si)], the distances of the Fe atom from the centroids of the unsubstituted and substituted cyclopentadienyl (Cp) rings are 1.651 (1) and 1.646 (1) Å, respectively. The dihedral angle between the two Cp rings is 3.20 (17)°. The crystal packing is mainly stabilized by van der Waals forces.
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Affiliation(s)
- Harald Wagner
- Institut für Anorganische Chemie, Technische Universität Graz, Stremayrgasse 16, A-8010 Graz, Austria
| | - Judith Baumgartner
- Institut für Anorganische Chemie, Technische Universität Graz, Stremayrgasse 16, A-8010 Graz, Austria
| | - Christoph Marschner
- Institut für Anorganische Chemie, Technische Universität Graz, Stremayrgasse 16, A-8010 Graz, Austria
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Stueger H, Fuerpass G, Renger K, Baumgartner J. Synthesis, Structures, and Unusual Photoluminescence of O- and N-Functional Cyclohexasilanes. Organometallics 2005. [DOI: 10.1021/om050587w] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Harald Stueger
- Institute of Inorganic Chemistry, Graz University of Technology, Stremayrgasse 16, A-8010 Graz, Austria
| | - Gottfried Fuerpass
- Institute of Inorganic Chemistry, Graz University of Technology, Stremayrgasse 16, A-8010 Graz, Austria
| | - Karin Renger
- Institute of Inorganic Chemistry, Graz University of Technology, Stremayrgasse 16, A-8010 Graz, Austria
| | - Judith Baumgartner
- Institute of Inorganic Chemistry, Graz University of Technology, Stremayrgasse 16, A-8010 Graz, Austria
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Bis-silyl substituted ferrocenylenes, including dicyanovinyl electron-withdrawing groups, as potential non-linear optical materials. J Organomet Chem 2003. [DOI: 10.1016/j.jorganchem.2003.07.006] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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Beyer C, Böhme U, Pietzsch C, Roewer G. Preparation, characterization and properties of dipolar 1,2-N,N-dimethylaminomethylferrocenylsilanes. J Organomet Chem 2002. [DOI: 10.1016/s0022-328x(02)01427-4] [Citation(s) in RCA: 40] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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