40 research outputs found
Big is Beautiful - "Aromaticity" Revisited from the Viewpoint of Macromolecular and Supramolecular Benzene Chemistry
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Room temperature discotic liquid crystalline thin films of hexa-peri-hexabenzocoronene: Synthesis and optoelectronic properties
No full textHochgeordnete kolumnare Strukturen von Hexa-peri-hexabenzocoronen - Synthese, Röntgenbeugung und heteronucleare Multiquanten-Festkörper-NMR-Untersuchungen
No full textDiscotic Liquid Crystalline Hexabenzocoronenes Carrying Chiral and Racemic Branched Alkyl Chains: Supramolecular Engineering and Improved Synthetic Methods
No full textHighly Ordered Columnar Structures from Hexa-peri-hexabenzocoronene - Synthesis, X-ray Diffraction, and Solid-State Heteronuclear Multiple-Quantum NMR Investigations
No full textStereodynamics and characterization of the hexa(4-n-dodecylbiphenylyl)benzene hexaanion that includes a twisted benzene core
No full textHexa(4-n-dodecylbiphenylyl)benzene (HDBB) was reduced by a series of alkali metals in THF under high vacuum. Three reduction states were identified by NMR spectroscopy, namely the dianion, tetraanion and hexaanion. The NMR spectra of HDBB<sup>6-</sup> revealed a remarkable distortion of symmetry, which is interpreted by adoption of a twisted conformation of the central benzene ring and a slow rotation of the inner phenylene rings of the biphenyl units. Due to the surprising thermal stability of the hexaanion, a dynamic NMR investigation revealed the pseudorotation of the twisted conformation and the phenylene rotation mentioned above
Paul Valéry ed i "Cahiers" nell' orizzonte della tradizione filosofica
No full textCLERMONT FD-BCIU Lettr./Sci.Hum. (631132101) / SudocSudocFranceF
Record Charge Carrier Mobility in a Room-Temperature Discotic Liquid-Crystalline Derivative of Hexabenzocoronene
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