Results 301 to 310 of about 170,894 (344)

Intramolecular Transfer of Singlet Oxygen

Journal of the American Chemical Society, 2015
The intramolecular transfer of energy (FRET) and electrons (Dexter) are of great interest for the scientific community and are well-understood. In contrast, the intramolecular transfer of singlet oxygen ((1)O2), a reactive and short-lived oxygen species, has until now been unknown. This process would be very interesting because (1)O2 plays an important
Klaper, Matthias, Linker, Torsten (Prof. Dr.)   +1 more
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Singlet oxygen oxidation of foods

Critical Reviews in Food Science and Nutrition, 1992
(1992). Singlet oxygen oxidation of foods. Critical Reviews in Food Science and Nutrition: Vol. 31, No. 3, pp. 211-236.
D G, Bradley, D B, Min
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DITHIOPHENES AS SINGLET OXYGEN SENSITIZERS

Photochemistry and Photobiology, 1982
Abstract— The nematicidal compounds, 5‐methyl‐2,2′dithienyl, 5‐phenyl‐2,2′‐dithienyl and 5,5′‐dichloro‐2,2′‐dithienyl, generate singlet oxygen upon photoactivation with near‐UV light. Two chloro‐substituted dithienylethenes have similar properties that are farless efficient.
Gommers, F.J., Bakker, J., Wynberg, H.
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Singlet oxygen photosensitisation by the fluorescent probe Singlet Oxygen Sensor Green®

Chemical Communications, 2009
The fluorescent probe Singlet Oxygen Sensor Green is able to produce singlet oxygen under exposure to UV or visible radiation.
Xavier, Ragàs, Ana, Jiménez-Banzo, David, Sánchez-García, Xavier, Batllori, Santi, Nonell   +4 more
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A singlet oxygen approach to oxaspirocycles

Tetrahedron Letters, 2013
Abstract A method for the preparation of oxygen containing spirocycles using singlet oxygen is reported. A series of phenols were converted into the corresponding peroxy-cyclohexadienone derivatives by irradiation with visible light in the presence of a sensitizer and oxygen.
Jones, K., Hillringhaus, T., Klussmann, M.   +2 more
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The singlet oxygen and carotenoid interaction

Journal of Photochemistry and Photobiology B: Biology, 1991
Second-order rate constants kQ for the quenching of O2(1 delta g) by carotenoids were determined at room temperature in benzene and toluene using the technique of time-resolved luminescence. Of the C40 pigments studied, lycopene was found to be the most efficient quencher, but the increased efficiency compared with all-trans beta-carotene was less than
P F, Conn, W, Schalch, T G, Truscott
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Singlet Oxygen in DNA Nanotechnology

Accounts of Chemical Research, 2014
CONSPECTUS: Singlet oxygen ((1)O2), the first excited electronic state of molecular oxygen, is a significant molecule, despite its minute size. For more than half a century, the molecule has been widely used and studied in organic synthesis, due to its characteristic oxygenation reactions. Furthermore, (1)O2 plays a key role in mechanisms of cell death,
Tørring, Thomas; id_orcid 0000-0001-5257-2121, Helmig, Sarah Wendelbo, Ogilby, Peter Remsen, Gothelf, Kurt Vesterager   +3 more
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Photogeneration of singlet oxygen by psoralens

Bulletin of Experimental Biology and Medicine, 1983
Photosensitized luminescence of singlet (1 delta g) molecular oxygen with the maximum at 1272 nm has been found in solutions of psoralen, angelicin and 8-methoxypsoralen in CCl4. The luminescence excitation spectra, quantum yields of generation (gamma g) and rate constants of quenching (Kq) of 1 delta g by psoralens have been measured.
A A, Krasnovskiĭ, V L, Sukhorukov, A Ia, Potapenko   +2 more
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Singlet Oxygen Stress in Microorganisms

2011
Singlet oxygen is the primary agent of photooxidative stress in microorganisms. In photosynthetic microorganisms, sensitized generation by pigments of the photosystems is the main source of singlet oxygen and, in nonphotosynthetic microorganisms, cellular cofactors such as flavins, rhodopsins, quinones, and porphyrins serve as photosensitizer.
J, Glaeser, A M, Nuss, B A, Berghoff, Gabriele, Klug   +3 more
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Reaction of phenol with singlet oxygen

Physical Chemistry Chemical Physics, 2019
Photo-degradation of organic pollutants plays an important role in their removal from the environment.
Jomana Al-Nu’airat, Bogdan Z. Dlugogorski, Xiangpeng Gao, Nassim Zeinali, Jakub Skut, Phillip R. Westmoreland, Ibukun Oluwoye, Mohammednoor Altarawneh   +7 more
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