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6,6′,11,11′-Tetra((triisopropylsilyl)ethynyl)-anti-[2.2](1,4)tetracenophane: a covalently coupled tetracene dimer and its structural, electrochemical, and photophysical characterization

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Abstract

[2.2]-Acenophanes are a class of compounds with two acene units interconnected by two ethano bridges. Due to the short bridges, the two acene subunits are in close proximity and can result in a modification of properties compared to the monomeric acene. We describe the synthesis of the first example of a [2.2](1,4)tetracenophane that is modified by four (triisopropylsilyl)ethynyl substituents and its characterization by a number of techniques including single crystal X-ray crystallography. The tetracene moieties are found to be essentially parallel to each other in the molecule. The packing is characterized by the formation of a staircase arrangement with a weak overlap between individual tetracenophane molecules. Optical spectroscopy and electrochemical investigations indicate that the two tetracene moieties of the tetracenophane communicate more than the individual pentacene units in the larger pentacenophane.

Graphical abstract: 6,6′,11,11′-Tetra((triisopropylsilyl)ethynyl)-anti-[2.2](1,4)tetracenophane: a covalently coupled tetracene dimer and its structural, electrochemical, and photophysical characterization

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Publication details

The article was received on 10 Feb 2017, accepted on 31 Mar 2017 and first published on 13 Apr 2017


Article type: Research Article
DOI: 10.1039/C7QO00117G
Citation: Org. Chem. Front., 2017, Advance Article
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    6,6′,11,11′-Tetra((triisopropylsilyl)ethynyl)-anti-[2.2](1,4)tetracenophane: a covalently coupled tetracene dimer and its structural, electrochemical, and photophysical characterization

    H. F. Bettinger, R. Einholz, A. Göttler, M. Junge, M. Sättele, A. Schnepf, C. Schrenk, S. Schundelmeier and B. Speiser, Org. Chem. Front., 2017, Advance Article , DOI: 10.1039/C7QO00117G

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