Search Results - "Bettinger, Holger F"
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Pushing the Limits of Acene Chemistry: The Recent Surge of Large Acenes
Published in Chemistry : a European journal (15-02-2021)“…Acenes, consisting of linearly fused benzene rings, are an important fundamental class of organic compounds with various applications. Hexacene is the largest…”
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Photogeneration of Octacene and Nonacene
Published in Angewandte Chemie (International ed.) (01-06-2010)“…Take it to the limit: Parent acenes larger than heptacene have eluded synthesis for decades. When 1,2‐diketone bridges in suitably designed tetraketone…”
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3
Evolution of the Optical Gap in the Acene Series: Undecacene
Published in Angewandte Chemie International Edition (13-08-2018)“…Undecacene, the largest member of the acene family, was photogenerated in a polymer matrix under cryogenic conditions from a precursor with two α‐diketone…”
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4
Boradigermaallyl: (4+3) Cycloaddition‐Initiated Boron Insertion into Benzene
Published in Angewandte Chemie International Edition (24-04-2023)“…The 2π electron 1,3‐dipole boradigermaallyl, valence‐isoelectronic to an allyl cation, is synthesized from a bis(germylene). It reacts with benzene at room…”
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Heptacene: Characterization in Solution, in the Solid State, and in Films
Published in Journal of the American Chemical Society (29-03-2017)“…Acenes comprise an important class of organic semiconducting materials. As graphene nanoribbons of ultimate width, they are valuable atom-precise model systems…”
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Construction of an Internally B3N3-Doped Nanographene Molecule
Published in Angewandte Chemie International Edition (06-07-2015)“…The synthesis of a hexa‐peri‐hexabenzocoronene (HBC) with a central borazine core is described. The solid‐state structure of this BN‐doped HBC (BN‐HBC) is…”
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Synthesis, Stability, and Photochemistry of Pentacene, Hexacene, and Heptacene: A Matrix Isolation Study
Published in Journal of the American Chemical Society (14-10-2009)“…The photochemical bisdecarbonylation of bridged α-diketones (Strating−Zwanenburg reaction) to give the oligoacenes pentacene (2), hexacene (3), and heptacene…”
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BN-Phenanthryne: Cyclotetramerization of an 1,2-Azaborine Derivative
Published in Angewandte Chemie International Edition (25-08-2014)“…Thermolysis of 9‐azido‐9‐borafluorene in heptane solution produces the tetramer of a BN‐phenanthryne. The isolation of the self‐trapping product provides…”
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The Longest Acenes
Published in Chemical record (01-02-2015)“…For a long time, the largest known member of the acene series was hexacene, consisting of six linearly fused benzene rings. The next higher member, heptacene,…”
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Synthesis and Characterization of a Boron–Nitrogen−Boron Zigzag-Edged Benzo[fg]tetracene Motif
Published in Organic letters (01-09-2017)“…The boron–nitrogen−boron (BNB) zigzag edged benzo[fg]tetracene is accessible from 4-butyl-2,6-diphenylaniline in four steps in good yields. The two mesityl…”
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On-Surface Synthesis of BN-Substituted Heteroaromatic Networks
Published in ACS nano (22-09-2015)“…We report on the bottom-up fabrication of BN-substituted heteroaromatic networks achieved by surface-assisted polymerization and subsequent…”
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12
The Dewar Isomer of 1,2‐Dihydro‐1,2‐azaborinines: Isolation, Fragmentation, and Energy Storage
Published in Angewandte Chemie International Edition (04-05-2018)“…The photochemistry of 1,2‐dihydro‐1,2‐azaborinine derivatives was studied under matrix isolation conditions and in solution. Photoisomerization occurs…”
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13
Synthesis and Photodimerization of 2- and 2,3-Disubstituted Anthracenes: Influence of Steric Interactions and London Dispersion on Diastereoselectivity
Published in Journal of organic chemistry (16-08-2019)“…There is increased evidence that the effect of bulky groups in organic, organometallic, and inorganic chemistry is not only repulsive but can be attractive…”
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14
Hexacene on Cu(110) and Ag(110): Influence of the Substrate on Molecular Orientation and Interfacial Charge Transfer
Published in Journal of physical chemistry. C (17-03-2022)“…Hexacene, composed of six linearly fused benzene rings, is an organic semiconductor material with superior electronic properties. The fundamental understanding…”
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15
Demonstrating the Impact of the Adsorbate Orientation on the Charge Transfer at Organic–Metal Interfaces
Published in Journal of physical chemistry. C (06-05-2021)“…Charge-transfer processes at molecule–metal interfaces play a key role in tuning the charge injection properties in organic-based devices and thus, ultimately,…”
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Synthesis of the [11]Cyclacene Framework by Repetitive Diels–Alder Cycloadditions
Published in Molecules (Basel, Switzerland) (20-05-2021)“…The Diels–Alder cycloaddition between bisdienes and bisdienophile incorporating the 7-oxa-bicyclo[2.2.1]heptane unit are well known to show high…”
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17
Superelectrophilicity of 1,2‐Azaborine: Formation of Xenon and Carbon Monoxide Adducts
Published in Angewandte Chemie International Edition (18-03-2019)“…The BN analogue of ortho‐benzyne, 1,2‐azaborine, is shown to bind carbon monoxide and a xenon atom under matrix isolation conditions, demonstrating its…”
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Solvation of Large Polycyclic Aromatic Hydrocarbons in Helium: Cationic and Anionic Hexabenzocoronene
Published in Molecules (Basel, Switzerland) (10-10-2022)“…The adsorption of helium on charged hexabenzocoronene (Hbc, C H ), a planar polycyclic aromatic hydrocarbon (PAH) molecule of symmetry, was investigated by a…”
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Bridging the Gap between Pentacene and Perfluoropentacene: Synthesis and Characterization of 2,3,9,10-Tetrafluoropentacene in the Neutral, Cationic, and Dicationic States
Published in Journal of organic chemistry (16-03-2018)“…The thermal and photochemical syntheses of 2,3,9,10-tetrafluoropentacene (F4PEN) from 6,13-etheno bridged precursors were investigated computationally and…”
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1,2-Azaborine: The Boron-Nitrogen Derivative of ortho-Benzyne
Published in Angewandte Chemie International Edition (26-06-2015)“…The BN analogue of ortho‐benzyne, 1,2‐azaborine, is generated by flash vacuum pyrolysis, trapped under cryogenic conditions, and studied by direct…”
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