Near threshold photo-oxidation of dinucleotides containing purines upon 266 nm nanosecond laser excitation. The role of base stacking, conformation, and sequence

Article Abstract:

The study was done on the 266nm nanosecond laser photoionization (PI) of a wide range of dinucleotides containing purines, and related nucleosides and nucleotides. The result shows that the differences in the base stacking, conformation and structural fluctuations of various dinucleotides are proposed to explain the sequence effect in Photoionization (PI) yields and photoreactivity at 254 nm.

Nucleic Acid Derivatives, Nucleotides, Chemistry, Physical and theoretical, Physical chemistry, Nucleosides, Purines

---

Role of sequence and conformation on the photochemistry and the photophysical of A-T DNA dimers: An experimental and computational approach

Article Abstract:

The role of base sequence and conformation on the photochemistry and the photophysical of thymidylyl (3'-5')-2'-deoxyadenosine sodium salt (TpdA) and 2-deoxyadenylyl (3'-5')-thymidine ammonium salt (dApT) is studied. The transient absorption spectra show the solvated electron broad band in the visible region for each dinucleotide and low-intensity absorption bands in the ultra violet region.

Drugs, Deoxyribonucleic Acid, Methods, Analysis, DNA, Conformational analysis, Photochemistry, Chemical properties, Dimer acids

---

Photophysics and photochemistry of imipramine, desimipramine, and clomipramine in several solvents: a fluorescence, 266 nm laser flash, and theoretical study

Article Abstract:

The studies of photophysical and photochemical properties of imipramine (IPA) and its derivatives are reported. The results provide insight into phototoxicity of these drugs which are used for the treatment of depression and other mental disorders.

Observations, Amines, Toxicity

Similar abstracts:

• Abstracts: Interpretation of the time constants measured by kinetic techniques in nanostructed semiconductor electrodes and dye-sensitized solar cells. part 2
• Abstracts: Structure of the amide I band of peptides measured by femtosecond nonlinear-infrared spectroscopy. Transient 2D-IR spectroscopy: snapshots of the nonequilibrium ensemble during the picosecond conformational transition of a small peptide
• Abstracts: Novel method for calculating the diffusion coefficients of a ternary system containing a polydisperse component. Applications to the Gouy interferometry
• Abstracts: Growth conditions of double-walled carbon nanotubes in arch discharge. Chemical vapor depositions of single-walled carbon nanotubes catalyzed by uniform Fe(sub 2)O(sub 3) nanoclusters synthesized using diblock copolymer micelles
• Abstracts: Water-gas-shift reaction on molybdenum carbide surfaces: Essential role of the oxycarbide. A novel growth mode of Mo on Au (111) from a Mo(CO)(sub 6) precursor: an STM study

This website is not affiliated with document authors or copyright owners. This page is provided for informational purposes only. Unintentional errors are possible.