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Showing 1 to 8 of 8 for “"acene"”.
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Singlet Exciton Fission in Acene Dimer and Diradicaloid Molecules
… singlet exciton fission, in three different acene dimers and diradicaloids. In pentacene and tetracene dimers, we investigate their mechanism of singlet fission. In a series of diradicaloids, we study the relation between molecular structure, diradical character and the suitability for …
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Fullerene-acene chemistry: Part I Studies on the regioselective reduction of acenes and acene quinones; Part II Progress toward the synthesis of large acenes and their Diels-Alder chemistry with [60]fullerene
<p>The regioselective reduction of acenes and acene quinones has been studied. Using hydriodic acid (HI) in acetic acid (HOAc) as reductant, it was found that acenes smaller than five rings reduce in a regioselective fashion. It was also found that phenyl substituted acenes with as many as seven …
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In Pursuit of Extraordinarily Twisted Acenes
Longitudinally twisted acenes are a topologically interesting class of polycyclic aromatic hydrocarbons (PAHs), and it could be argued that they have quite beautiful chemical structures, too. X-ray crystal analysis of many of these acenes has found them to adopt a helical conformation where the …
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Chemistry of acenes, [60]fullerenes, cyclacenes and carbon nanotubes
… the present work, we studied the chemistries of acenes, cyclacenes, [60]fullerenes and CNTs. Acenes are well known organic semiconductors. Pentacene is a benchmark organic semiconductor due to low HOMO-LUMO gap and high charge carrier mobilities in its thin film. Its poor solubility and …
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Probing regioselectivity in the Diels -Alder cycloadditions between *[60]fullerene and aryl substituted acenes
… Reactive 5 is utilized to form the anthracene 11, tetracene 15, and pentacene 22. The latter two compounds are reacted with [60]fullerene to explore the potential role of CH/pi interactions in the cycloaddition of [60]fullerene across phenyl substituted acenes. [60]Fullerene shows an …
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Synthesis and analysis of siloranes for use as a biomaterial and extended twisted molecular ribbons
… the effect of end caps and substitution of the acene skeleton was completed. The synthesis of the target pentacene and anthracene compounds was focused on the incorporation of isopropyl substituents while extension of the acene skeleton was expanded to the hexacene diol. The targets were …
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Development of Nickel and Zirconium Mediated Cycloadditions for the Synthesis of Substituted Pentacene
… an asymmetric 1,3-diyne into the oligoacene backbone provided substituents that could be differentiated in subsequent reactions. Conversion of silyl alkynes to bromo alkynes allowed Bergman aromatization of the naphthalenes to occur. The substituted anthracenes formed could then be …
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The design and synthesis of polycyclic conjugated hydrocarbons via the incorporation of bifunctional Diels-Alder building blocks
… aromatic hydrocarbons and nonbenzenoid oligoacenes, and also discuss synthetic efforts to stabilize, solubilize and tune the properties of these classes of molecules. In Chapter 2, we describe the synthesis and characterization of seven new linearly conjugated ladder compounds of the …