Results 111 to 120 of about 297 (133)
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Langmuir, 2010
The molecular structure of thin pentacene film grown on a Cu(119) surface has been studied by near-edge X-ray absorption fine structure spectroscopy and scanning tunneling microscopy. The interaction between the π-molecular orbitals delocalized on the aromatic rings and the underlying copper substrate was deduced from XAS spectra.
Annese E, Vobornik I, Rossi G, Fujii J
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The molecular structure of thin pentacene film grown on a Cu(119) surface has been studied by near-edge X-ray absorption fine structure spectroscopy and scanning tunneling microscopy. The interaction between the π-molecular orbitals delocalized on the aromatic rings and the underlying copper substrate was deduced from XAS spectra.
Annese E, Vobornik I, Rossi G, Fujii J
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Journal of Materials Chemistry C, 2013
A water soluble pentacene, potassium 3,3′-(pentacene-6,13-diylbis(sulfanediyl))dipropanoate (4), has been synthesized and characterized. The synthesis of 4 is straightforward and scalable, and its isolation does not require time consuming chromatographic separations.
Chandrani Pramanik +9 more
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A water soluble pentacene, potassium 3,3′-(pentacene-6,13-diylbis(sulfanediyl))dipropanoate (4), has been synthesized and characterized. The synthesis of 4 is straightforward and scalable, and its isolation does not require time consuming chromatographic separations.
Chandrani Pramanik +9 more
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Pentacene and poly-pentacene as graphene nanoribbons
Solid State Communications, 2014Abstract The development of electronic devices based on the unique electronic properties of graphene requires the large scale synthesis of graphene nanoribbons which remains a significant challenge. A possible way around this is to seek existing molecules that can be readily chemically synthesized and have the structure of graphene nano-ribbons.
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Thermal Decomposition of Pentacene Oxyradicals
The Journal of Physical Chemistry A, 2011The energetics and kinetics of the thermal decomposition of pentacene oxyradicals were studied using a combination of ab initio electronic structure theory and energy-transfer master equation modeling. The rate coefficients of pentacene oxyradical decomposition were computed for the range of 1500-2500 K and 0.01-10 atm and found to be both temperature ...
Xiaoqing, You +3 more
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Photoresponse of pentacene‐based transistors
physica status solidi (a), 2014Organic thin film phototransistor (OPTs) devices in bottom‐gate/top‐contact configuration were fabricated and used as analytic system to study the electrical and optical properties of pentacene. The channel of the OTFT devices was illuminated by laser radiation of wavelength 670 nm and the effect of irradiation on the electrical responses of the ...
Loffredo Fausta +10 more
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Heterofission of pentacene excited singlets in pentacene-doped tetracene crystals
Chemical Physics Letters, 1971Abstract The magnetic field dependence of the fluorescence of pentacene-doped tetracene single crystals indicates that following energy transfer to pentacene, the trapped pentacene singlet fissions into one tetracene triplet exciton and one pentacene triplet (estimated energy 0.81 ± 0.02 eV).
N.E. Geacintov +3 more
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Electroluminescence from Individual Pentacene Nanocrystals
ChemPhysChem, 2010Keywords: exciton ; luminescence ; nanostructures pentacene ; scanning probe microscopy ; Photon-Emission ; Single-Crystals ; Metal-Surfaces ; Molecules ; Spectroscopy ; States Reference EPFL-ARTICLE-172137doi:10.1002/cphc.201000531View record in Web of Science Record created on 2011-12-16, modified on 2017-05 ...
Kabakchiev, A. +3 more
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Toward the peri‐Pentacene Framework
Chemistry – A European Journal, 2013AbstractBased on modern pyrene chemistry, a new route toward the synthesis of the peri‐pentacene framework was developed. Firstly, the tetraketo form as stable precursor was targeted, because the fully aromatic peri‐pentacene is predicted to suffer from high instability and reactivity.
Zöphel, L. +6 more
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Chemistry – An Asian Journal, 2009
AbstractDouble up: A zirconium‐mediated double homologation method was successfully applied for the synthesis of multi‐substituted pentacene derivatives from 1,2,4,5‐tetrakis(propargyl)benzenes. The bis(zirconacyclopentadiene) intermediates were also characterized.
Shi, Li +4 more
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AbstractDouble up: A zirconium‐mediated double homologation method was successfully applied for the synthesis of multi‐substituted pentacene derivatives from 1,2,4,5‐tetrakis(propargyl)benzenes. The bis(zirconacyclopentadiene) intermediates were also characterized.
Shi, Li +4 more
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Photochemical Formation of Substituted Pentacenes
The Journal of Organic Chemistry, 2008Substituted pentacenes (8a, 8b, 14a, and 14b) were prepared by Strating-Zwanenburg photodecarbonylation of diones (7a, 7b, 13a, and 13b). The compounds are red and stable in the solid state under inert atmosphere as well as in degassed solutions, but not in air.
Yuewei, Zhao +2 more
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