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Tian Jin et al.
Talanta, 200, 242-248 (2019-05-01)
Due to severely overlapping emission and or/ excitation spectra of polycyclic aromatic hydrocarbons (PAHs), the specifically recognizing PAHs by the fluorescent technique is still a challenge. Here, synthesized Ag@SiO2 nanoparticles with 40 ± 4 nm Ag core and 7 ± 1 nm SiO2 shell performing as
P D Josephy et al.
Mutation research, 429(2), 199-208 (1999-10-20)
The mutagenic actions of many chemicals depend on the activities of bacterial "mutagenesis proteins", which allow replicative bypass of DNA lesions. Genes encoding these proteins occur on bacterial chromosomes and plasmids, often in the form of an operon (such as
B Mao et al.
Biochemistry, 35(39), 12659-12670 (1996-10-01)
Combined NMR-molecular mechanics computational studies were undertaken on the C8-deoxyguanosine adduct formed by the carcinogen 1-nitropyrene embedded in the d(C5-[AP]G6-C7).d(G16-C17-G18) sequence context in a 11-mer duplex, with dC opposite the modified deoxyguanosine. The exchangeable and nonexchangeable protons of the aminopyrene
Li Ma et al.
Biochemistry, 57(31), 4735-4740 (2018-04-06)
It is challenging to assess protein-membrane interactions because of the lack of appropriate tools to detect position changes of single proteins in the ∼4 nm range of biological membranes. We developed an assay recently, termed surface-induced fluorescence attenuation (SIFA). It
B Miksa et al.
Journal of biomaterials science. Polymer edition, 7(6), 503-513 (1995-01-01)
Poly(methyl methacrylate-methacrylic acid-2-hydroxyethyl methacrylate) latex (ACRYLAT) was synthesized by radical precipitation polymerization. The mass median diameter (MMD) and the geometrical standard deviation (GSD) of the ACRYLAT particles were 138 nm and 1.2, respectively. The concentration of the titrable carboxylic groups
Maciej Mazur et al.
Bioelectrochemistry (Amsterdam, Netherlands), 66(1-2), 89-94 (2005-04-19)
We report on the covalent attachment of pyrene to quartz and indium-doped tin oxide (ITO) surfaces, and its characterization by steady-state and time-resolved emission spectroscopy. We estimate the chromophore surface coverage on the basis of their electrochemical oxidation mechanism in
S Torres-Cartas et al.
European journal of medicinal chemistry, 42(11-12), 1396-1402 (2007-05-08)
Mutagenicity is a toxicity endpoint associated with the chronic exposure to chemicals. Aromatic amines have considerable industrial and environmental importance due to their widespread use in industry and their mutagenic capacity. Biopartitioning micellar chromatography (BMC), a mode of micellar liquid
Shanen M Sherrer et al.
Mutation research, 737(1-2), 25-33 (2012-08-25)
N-(Deoxyguanosin-8-yl)-1-aminopyrene (dG(AP)) is the predominant nitro polyaromatic hydrocarbon product generated from the air pollutant 1-nitropyrene reacting with DNA. Previous studies have shown that dG(AP) induces genetic mutations in bacterial and mammalian cells. One potential source of these mutations is the
Rakesh Chopra et al.
Analytica chimica acta, 864, 55-63 (2015-03-04)
A pyrene-based small molecular weight probe, exhibiting aggregation enhanced excimer emission has been synthesized. The crystalline emissive form detects 2,4,6-trinitrophenol (picric acid) at parts-per-billion concentration in solution and as low as 0.46 attogram in direct contact mode, operating predominantly in
Stephen I N Ekunwe et al.
International journal of environmental research and public health, 2(1), 58-62 (2006-05-20)
Over the past several years, a great deal of interest has been focused on the harmful effects of ultraviolet (UV) radiation to human skin. UV light has been implicated in aging, sunburn and skin cancer. Few studies, however, have been
N Hatanaka et al.
Mutation research, 497(1-2), 223-233 (2001-08-30)
Metabolic activation of 1-nitropyrene (1-NP) by human cytochrome P450 (P450) family 1 enzymes co-expressed with NADPH-cytochrome P450 reductase (NPR) in Escherichia coli membranes was investigated. 1-NP induced umu gene expression in Salmonella typhimurium TA1535/pSK1002 in the absence of any P450
Lun Wang et al.
Analytical and bioanalytical chemistry, 382(5), 1300-1303 (2005-05-26)
Organic fluorescence nanoparticles (1-aminopyrene nanoparticles) were prepared under ultrasonic radiation and used to determine nitrite. Such nanoparticles have a broad, continuous excitation spectrum, but they are also photochemically stable and water-soluble. Nitrite determination was based upon nitrite quenching the fluorescence
John C Bachman et al.
Nature communications, 6, 7040-7040 (2015-05-07)
Electrochemical energy-storage devices have the potential to be clean and efficient, but their current cost and performance limit their use in numerous transportation and stationary applications. Many organic molecules are abundant, economical and electrochemically active; if selected correctly and rationally
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