نتایج جستجو برای: chrysene
تعداد نتایج: 368 فیلتر نتایج به سال:
The regioselective, orthogonal functionalisation of 4,10-dichlorochrysene enables the synthesis of a variety of 2,8,4,10-"A2B2"-tetrasubstituted chrysenes. Such compounds exhibit broadened UV-vis absorption spectra, decreased band gap and higher HOMO levels compared to the parent chrysene.
• Atlantic cod has two vitamin D receptors (Vdra and Vdrb) with similar tissue expression. None of the tested PAHs were able to modulate Vdr activation alone. Phenanthrene, fluorene, pyrene antagonized calcitriol-mediated Vdra. Chrysene benzo[a]pyrene potentiated both Vdrs. can potentially pathway in fish. Vitamin receptor (VDR) mediates biological function steroid hormone calcitriol, which is ...
In the electrofluorescence method, a solution of DNA with covalently bound polycyclic hydrocarbons is placed in an electric field, and changes in the intensity of polarized fluorescence are observed. Under the correct conditions, these charges can be used to determine a value for the angle psi between the long axis of the hydrocarbon molecule and the axis of the DNA helix. For DNA or poly(dA-dT...
Graphene nanoribbons (GNRs), defined as nanometer-wide strips of graphene, have attracted increasing attention as promising candidates for next-generation semiconductors. Here, we demonstrate a bottom-up strategy toward novel low band gap GNRs (Eg = 1.70 eV) with a well-defined cove-type periphery both in solution and on a solid substrate surface with chrysene as the key monomer. Corresponding ...
Soil microorganisms play an important role in the degradation of PAHs and use various metabolic pathways for this process. The effect soil pH, different amendments co-cultivation fungi on activity ligninolytic enzymes was evaluated. For that purpose, three were studied: Trichoderma viride, Penicillium chrysogenum Agrocybe aegerita. Biodegradation assays with a mixture 200 ppm (fluorene, pyrene,...
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