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Showing 1 to 17 of 17 for “"azulene"”.
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The spectroscopy and the photophysics of 1,2-benzazulene, a derivative of azulene.
The photophysics and the spectroscopy of 1,2-benzazulene were studied both in the liquid and solid phase using azulene for comparison, with the interest of investigating its quenching mechanism from the S2 state and the possibility of it undergoing singlet fission via S2 + S0 → 2T1. To understand …
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The gas chromatographic separation properties of azulene and the synthesis and characterization of bulky bis-pyrazolylpyridine metal-ligand complexes.
… of bulky tridentate ligand-metal complexes. Azulene is an aromatic molecule with interesting properties, most notably a permanent dipole moment of 1.08 D. This degree of polarity in the absence of heteroatoms is quite rare and offers potential for use in unique gas chromatographic stationary …
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C-H Activation of Functional Materials
… of a carboxylate directed C-H arylation of azulene at the 2-position. This methodology enables the overriding of the natural reactivity of the 1, 3-position to conveniently access 2-arylated azulene, without regioselectivity issues and in moderate to high yields. The reaction was found to …
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Nanoscale Manipulation of Surfaces and Interfaces: Engineering Electrical Properties Through Nanofabrication
… or a metal, respectively. In this work, azulene derivatives and gold nanoparticles are studied as potential adsorbates on graphene-like materials. Azulene molecules themselves have very tunable HOMO and LUMO levels, and it could be possible to dope graphite-like materials in different …
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The origin of remarkable chromatographic differences in novel azulenyl-1,5-diols and synthesis and use of phosphinine and phosphabarrelene ligands for asymmetric catalysis.
… in the silica TLC mobility of a pair of azulene 1,5-diol diastereomers, a series of such azulene 1,5-diols were prepared. Every pair of diastereomers was especially well separated, and X-ray crystallography revealed a conformational explanation of the large differences in mobility. The …
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Using Molecular Design to Influence Intermolecular Interactions
… Second, efforts towards the synthesis of azulene HBC, an HBC derivative with red-shifted absorption, are discussed. Calculations of this target molecule and a selected intermediate are compared to those of the parent contorted HBC. Finally, an azulene HBC synthetic intermediate is explored …
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New Chemistry of Mercaptoazulenes and Low-Valent Complexes of Isocyanoarenes
… to explore the coordination chemistry of mercaptoazulenes. Prior to the work done by Barybin et al. there were no examples of coordination complexes of featuring mercaptoazulenes. Other mercaptoarenes have been utilized in the formation of thin films and featured in materials with luminescent …
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A COMPUTATIONAL STUDY OF BONDING INTERACTIONS AND SURFACE CHEMISTRY ON METAL SUBSTRATES
… ring-opening reactions of a non-halogenated azulene moiety are studied. The findings will contribute to the advancement of research in the fields of materials science, electronics, and catalysis.
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Modifying electronic and solid-state properties of fullerenes, polycyclic aromatic hydrocarbons, and perylene diimides
… substrates. A family of poly(trifluoromethyl)azulene derivatives was synthesized and characterized for the first time. Trifluoromethylation of azulene systematically increases the electron-withdrawing strength and affects solid-state packing motifs. The molecular structures and solid-state …
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The synthesis and properties of some higher membered fused alicyclic ring systems
… products such as dimethyl naphthalene and ethyl azulene were produced, clearly indicating that the heptalene structure cannot be produced with the same facility as azulenes. Attempts to reach the heptalene structure by dibromination of methyl [0.5.5J-bicyclo-dodecatetraene carboxylate and the …
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Laser-induced plasmas in air for pulsed broadband cavity-enhanced absorption spectroscopy
… measure broadband absorption spectra of gaseous azulene through (i) time-dependent cavity ring-down (CRDS), and (ii) intensity-dependent incoherent broadband cavity-enhanced absorption spectroscopy (IBBCEAS) methodologies. Based on the broadband ring-down time of light within the cavity, cavity …
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A New Terazulenic Platform
… currently known mono-, linear bi-, and linear terazulenes, with special emphasis on the orbital density distributions within the highest occupied molecular orbital and the lowest unoccupied molecular orbital of azulenic compounds and on the redox profiles of azulenic derivatives in cyclic …
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Investigating New Guaiazulenes and Diketopyrropyrroles for Photonic Applications
… and optoelectronic characteristics, the azulene framework has been under-appreciated despite its unique electronic and optical properties. Among several attributes, azulenes are vibrant blue naturally occurring hydrocarbons that exhibit large dipolar character, coupled with …
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Werner clathrates: structure and selectivity
… (PAHs), indene (IND), naphthalane (NAP), azulene (AZU), fluorene (FLU), anthracene (ANT), phenanthrene (PHE) and pyrene (PYR) were interpreted. Structural analysis revealed two types of crystal arrangements. The enhancement of green chemistry in the form of grinding, which avoids the use …