منابع مشابه
Nitrogen Backbone Oligomers
We found that nitrogen and hydrogen directly react at room temperature and pressures of ~35 GPa forming chains of single-bonded nitrogen atom with the rest of the bonds terminated with hydrogen atoms - as identified by IR absorption, Raman, X-ray diffraction experiments and theoretical calculations. At releasing pressures below ~10 GPa, the product transforms into hydrazine. Our findings might ...
متن کاملAcridine and quindoline oligomers linked through a 4-aminoproline backbone prefer G-quadruplex structures.
BACKGROUND DNA-intercalating drugs are planar molecules with several fused aromatic rings that form stacks between DNA base pairs, reducing the opening and unwinding of the double helix. Recently, interest on intercalating agents has moved in the search for new ligands to G-quadruplex structures. METHODS The DNA binding properties of 4-aminoproline oligomers functionalized with one, two or th...
متن کاملDetermination of the backbone structure of nucleic acids and nucleic acid oligomers by laser Raman scattering.
Raman spectra of fibers of DNA that have been prepared in the A, B, and C forms are presented and compared with Raman spectra of DNA and RNA in dilute solution. It is shown that the phosphate vibrations in the region 750-850 cm(-1) are very sensitive to the specific conformation of the phosphate group in the backbone chain and are virtually independent of all ohter factors. Thus, a very simple ...
متن کاملFormation of nitrogen-containing oligomers by methylglyoxal and amines in simulated evaporating cloud droplets.
Reactions of methylglyoxal with amino acids, methylamine, and ammonium sulfate can take place in aqueous aerosol and evaporating cloud droplets. These processes are simulated by drying droplets and bulk solutions of these compounds (at low millimolar and 1 M concentrations, respectively) and analyzing the residuals by scanning mobility particle sizing, nuclear magnetic resonance, aerosol mass s...
متن کاملNitrogen-containing organic compounds and oligomers in secondary organic aerosol formed by photooxidation of isoprene.
Electrospray ionization high-resolution mass spectrometry (ESI HR-MS) was used to probe molecular structures of oligomers in secondary organic aerosol (SOA) generated in laboratory experiments on isoprene photooxidation at low- and high-NO(x) conditions. Approximately 80-90% of the observed products are oligomers and up to 33% by number are nitrogen-containing organic compounds (NOC). We observ...
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ژورنال
عنوان ژورنال: Scientific Reports
سال: 2015
ISSN: 2045-2322
DOI: 10.1038/srep13239