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Thymine hydroperoxide as a potential source of singlet molecular oxygen in DNA
(ELSEVIER SCIENCE INC, 2009)
The decomposition of organic hydroperoxides into peroxyl radicals is a potential source of singlet molecular oxygen [O(2) ((1)Delta(g))] in biological systems. This study shows that 5-(hydroperoxymethyl)uracil (5-HPMU), a ...
Tryptophan oxidation by singlet molecular oxygen [O-2 ((1)Delta(g))]: Mechanistic studies using O-18-labeled hydroperoxides, mass spectrometry, and light emission measurements
(AMER CHEMICAL SOC, 2008)
Proteins have been considered important targets for reactive oxygen species. Indeed, tryptophan (W) has been shown to be a highly susceptible amino acid to many oxidizing agents, including singlet molecular oxygen [O-2 ...
Singlet oxygen production by a polypyridine ruthenium (II) complex with a perylene monoimide derivative: A strategy for photodynamic inactivation of Candida albicans
(2018-02-15)
We report the synthesis, optical, electrochemical and electronic properties of a new perylene derivative and its Ru(II) complex, namely N,-(5-amino-1,10-phenantroline)perylene-3,4,9,10-tetracarboximonoimide (pPDI) and ...
Cholesterol Hydroperoxides Generate Singlet Molecular Oxygen [O(2) ((1)Delta(g))]: Near-IR Emission, (18)O-Labeled Hydroperoxides, and Mass Spectrometry
(AMER CHEMICAL SOC, 2011)
In mammalian membranes, cholesterol is concentrated in lipid rafts. The generation of cholesterol hydroperoxides (ChOOHs) and their decomposition products induces various types of cell damage. The decomposition of some ...
Direct evidence of singlet molecular oxygen generation from peroxynitrate, a decomposition product of peroxynitrite
(ROYAL SOC CHEMISTRY, 2009)
The decomposition of peroxynitrite to nitrite and dioxygen at neutral pH follows complex kinetics, compared to its isomerization to nitrate at low pH. Decomposition may involve radicals or proceed by way of the classical ...
Síntesis y estudio fotofísico de derivados vinílicos del naftoxazol
(Universidad de Chile, 2011)
En este trabajo se ha estudiado el efecto del solvente sobre las propiedades fotofísicas
de 10 derivados del vinil naftoxazol. Las moléculas se han separado en 3 grupos:
compuestos que incluyen anillos de i) benceno ...
Photodynamic properties and photoantimicrobial action of electrochemically generated porphyrin polymeric films
(American Chemical Society, 2009-02)
Spectroscopic and photodynamic properties of polymeric films bearing porphyrin units have been studied in both solution containing photooxidizable substrates and in vitro on Escherichia coli and Candida albicans microorganisms. ...
Photostability enhancement in oligo (phenylene vinylene) systems and their application as heterogeneous photocatalysts
(Universidad Nacional de ColombiaBogotá - Ciencias - Doctorado en Ciencias - QuímicaDepartamento de QuímicaFacultad de CienciasBogotá, ColombiaUniversidad Nacional de Colombia - Sede Bogotá, 2022-08-25)
The first chapter revises the most relevant aspects of phenylene vinylene (PV) systems applied to photocatalysis. Despite the photochemical applications of these conjugated systems that have been widely described and involve ...