Photoinactivation ofEscherichia coliusing porphyrin derivatives with different number of cationic charges
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چکیده
منابع مشابه
Synthesis and spectroscopic characterization of two tetrasubstituted cationic porphyrin derivatives.
An imidazolium tetrasubstituted cationic porphyrin derivative (the free base and its Zn(II) complex) with five-membered heterocyclic groups in the meso-positions were synthesized using microwave irradiation, and the compounds obtained characterized by (1)H-NMR and mass spectrometry. We observed that under microwave irradiation the yield is similar to when the synthesis is performed under conven...
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A water-soluble cationic porphyrin, 5,10,15,20-Tetra(N-methylpyridinium-4-yl)-21H,23H-porphyrin has been shown to intercalate selectively into the A3-G4 gap of C-quadruplexed DNA d(TTAGGG)4.
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The effects of the cationic polymer ε-poly-L-lysine (εPL) on the enzymatic reaction rate of glucose oxidase (GOD) with ferrocene derivatives having different ionic charges have been investigated by measuring the ferrocene derivative-mediated catalytic current of oxidation by GOD. When negatively charged ferrocenes were used, the bioelectrocatalytic current, which is related to the enzymatic rea...
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Derivatives of amino acids bearing a porphyrin moiety on a side chain were synthesized by coupling a porphyrin to a glutamic acid side chain; the utility of these compounds was demonstrated by their use in solid-phase synthesis of a peptide bearing a cationic porphyrin and by studying its DNA-binding properties.
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Photodynamic inactivation of bacteria (PIB) by efficient singlet oxygen photosensitizers might be a beneficial alternative to antibiotics in the struggle against multiresistant bacteria. Phenothiazinium dyes belong to the most prominent classes of such sensitizers due to their intense absorption in the red-light region (λ(abs, max) ca. 600-680 nm, ε > 50,000 L mol(-1) cm(-1)), their low toxicit...
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ژورنال
عنوان ژورنال: FEMS Immunology & Medical Microbiology
سال: 2005
ISSN: 0928-8244,1574-695X
DOI: 10.1016/j.femsim.2004.12.007