Results 211 to 220 of about 2,936 (261)
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The fundamental frequencies of pyrene and pyrene-d10
Spectrochimica Acta Part A: Molecular Spectroscopy, 1971Abstract The infrared spectra of pyrene and pyrene- d 10 both in solution and in the solid have been measured down to 50 cm −1 . This data was complemented by laser-Raman studies of single crystal samples and of solutions in benzene, carbon disulphide and carbon tetrachloride.
A. Bree +3 more
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Transplacental action of benzo(a)pyrene and pyrene
Bulletin of Experimental Biology and Medicine, 1977The transplacental and direct action of benzo(a)pyrene (BP) on mice of strains A and C57BL and of their progeny was studied. BP was found to represent a carcinogenic risk for the progeny. The greatest carcinogenic effect in progeny of strain A mice was exhibited by BP in a dose of 6 mg: The frequency of development of lung tumors was 76.8% compared ...
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Chemosphere, 2014
Phytoremediation for PAH hydrocarbons has been widely studied, but few focus on the influence of rhizodeposition on their bioaccessibility during the process. This literature revealed the effect of celery (Apium graveolens) rhizodeposition on pyrene fractionation and bioaccessibility in simulated pyrene and pyrene-lead contaminated microcosms.
Jing, Wei +5 more
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Phytoremediation for PAH hydrocarbons has been widely studied, but few focus on the influence of rhizodeposition on their bioaccessibility during the process. This literature revealed the effect of celery (Apium graveolens) rhizodeposition on pyrene fractionation and bioaccessibility in simulated pyrene and pyrene-lead contaminated microcosms.
Jing, Wei +5 more
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International Journal of Cancer, 1973
AbstractBenzo[a]pyrene (B[a]P) and 6‐methylbenzo[a]pyrene ( 6‐MeB[a]P) are metabolized by fortified rat‐liver homogenates to a number of metabolites including one which is indistinguishable from 6‐hydroxymethylbenzo[a]pyrene (6–OHMeB[a]P) by either thin‐layer chromatography or ultra‐violet absorption spectra.
J W, Flesher, K L, Sydnor
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AbstractBenzo[a]pyrene (B[a]P) and 6‐methylbenzo[a]pyrene ( 6‐MeB[a]P) are metabolized by fortified rat‐liver homogenates to a number of metabolites including one which is indistinguishable from 6‐hydroxymethylbenzo[a]pyrene (6–OHMeB[a]P) by either thin‐layer chromatography or ultra‐violet absorption spectra.
J W, Flesher, K L, Sydnor
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Cancer Letters, 1978
The tumor initiating activity on mouse skin of benzo[a]pyrene (BaP), 7,10-dimethylBaP, and 10-methylBaP was determined. Each compound was tested at initiating doses of 50 microgram and 100 microgram with promotion by application 3 times weekly of 2.5 microgram tetradecanoylphorbol acetate. BaP induced tumors in 40% (100 microgram) and 25% (50 microgram)
S S, Hecht, N, Hirota, D, Hoffman
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The tumor initiating activity on mouse skin of benzo[a]pyrene (BaP), 7,10-dimethylBaP, and 10-methylBaP was determined. Each compound was tested at initiating doses of 50 microgram and 100 microgram with promotion by application 3 times weekly of 2.5 microgram tetradecanoylphorbol acetate. BaP induced tumors in 40% (100 microgram) and 25% (50 microgram)
S S, Hecht, N, Hirota, D, Hoffman
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Chemistry – An Asian Journal, 2008
AbstractA new type of fullerene–pyrene hybrid molecule, C60Ar5R [Ar=1‐pyrenyl, 4‐(1‐pyrenyl)C6H4, 4‐{(1‐pyrenyl)CO2}C6H4, and 4‐{(1‐pyrenyl)(CH2)3CO2}C6H4; R=H and Me] was synthesized by a regioselective penta‐addition reaction using organocopper reagents.
Yutaka, Matsuo +2 more
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AbstractA new type of fullerene–pyrene hybrid molecule, C60Ar5R [Ar=1‐pyrenyl, 4‐(1‐pyrenyl)C6H4, 4‐{(1‐pyrenyl)CO2}C6H4, and 4‐{(1‐pyrenyl)(CH2)3CO2}C6H4; R=H and Me] was synthesized by a regioselective penta‐addition reaction using organocopper reagents.
Yutaka, Matsuo +2 more
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Intersystem crossing in pyrene-h10 and pyrene-d10
Chemical Physics Letters, 1968Abstract : The phosphorescence intensity, phosphorescence lifetime, and fluorescence lifetime of pyrene -h(10) and pyrene -d(10) were measured as functions of temperature from 80K to 300K. Using this data, we determine the temperature dependence of the rate constant for intersystem crossing.
P.F. Jones, S. Siegel
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Dynamics of Pyrene-Dimer Association and Ensuing Pyrene-Dimer Dissociation
The Journal of Physical Chemistry A, 2020To address the possible role of pyrene dimers in soot, chemical dynamics simulations are reported to provide atomistic details for the process of collisional association of pyrene dimers and ensuing decomposition of pyrene dimers. The simulations are performed at 600, 900, 1200, 1600, and 2000 K temperatures (T) with different collisional impact ...
Debdutta Chakraborty +2 more
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Mutagenicity of pyrene in salmonella
Mutation Research Letters, 1985Pyrene was tested for mutagenicity in Salmonella typhimurium strains TA97, TA98, TA100 and TA1537. Mutagenicity was seen in all strains when S9 was present.
Z, Matijasević, E, Zeiger
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Pyrene-fused subphthalocyanine
Chem. Commun., 2011A pyrene-fused subphthalocyanine synthesized from a reaction of 2,7-di-tert-butyl-4,5,9,10-tetracyanopyrene and tetrafluorophthalonitrile exhibits red-shifted Q-band absorption and a unique linear arrangement in the solid state caused by a π-π stacking interaction.
Soji, Shimizu +3 more
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