Results 251 to 260 of about 159,516 (298)

Singlet oxygen dimol-sensitized luminescence from thermally generated singlet oxygen

Journal of the American Chemical Society, 1993
Delayed fluorescence (700 nm) of tetra-tert-butylphthalocyanine (Pc) can be sensitized by singlet oxygen generated by thermolysis of 1,4-dimethylnaphthalene endoperoxide. The initial intensity is proportional to the square of the initial concentration of the endoperoxide, and the apparent rate constants of its decay are twice those for singlet oxygen ...
Yulan Fu, Alexander A. Krasnovsky, Christopher S. Foote   +2 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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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, Helmig, Sarah Wendelbo, Ogilby, Peter Remsen, Gothelf, Kurt Vesterager   +3 more
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Chemically shifted singlet oxygen spectrum

Biochimica et Biophysica Acta (BBA) - General Subjects, 1978
The estimated light emission spectrum was determined for a singlet oxygen (1O2)-producing system, NaOCl + H2O2, alone and in the presence of tryptophan and bovine serum albumin. Tryptophan and bovine serum albumin caused a decrease in the red emission of 1O2 and an increase in the amount of shorter wavelength light.
B R, Andersen, T F, Lint, A M, Brendzel
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Singlet oxygen airglow

Journal of Photochemistry, 1984
Abstract This survey of excitation processes for singlet O 2 in planetary atmospheres is intended to provide an introduction to the following papers in which laboratory investigations and field measurements are discussed in more detail. The three singlet states, a 1 Δ g , b 1 Σ g + and c 1 Σ u − , contribute to features in the airglows of ...
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Singlet oxygen induced DNA damage

Mutation Research/DNAging, 1992
Singlet oxygen generated by photoexcitation and by chemiexcitation selectively reacts with the guanine moiety in nucleosides (kq + kr about 5 x 10(6) M-1s-1) and in DNA. The oxidation products include 8-oxo-7-hydro-deoxyguanosine (8-oxodG; also called 8-hydroxydeoxyguanosine) and 2,6-diamino-4-hydroxy-5-formamidopyrimidine (FapyGua).
H, Sies, C F, Menck
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Ene‐Reactions with Singlet Oxygen

ChemInform, 2003
AbstractFor Abstract see ChemInform Abstract in Full Text.
Oliver Krebs, Waldemar Adam, Tamer El-Idreesy, Axel Griesbeck   +3 more
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Singlet Oxygen-Induced DNA Damage

Radiation Research, 2006
Singlet oxygen, hydrogen peroxide, hydroxyl radical and hydrogen peroxide are the reactive oxygen species (ROS) considered most responsible for producing oxidative stress in cells and organisms. Singlet oxygen interacts preferentially with guanine to produce 8-oxo-7,8-dihydroguanine and spiroiminodihydantoin. DNA damage due to the latter lesion has not
Han-Chun, DeFedericis, Helen B, Patrzyc, Michael J, Rajecki, Edwin E, Budzinski, Herbert, Iijima, Jean B, Dawidzik, Marianne S, Evans, Kellee F, Greene, Harold C, Box   +8 more
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Singlet oxygen and biological systems

Chemico-Biological Interactions, 1971
Abstract Singlet oxygen is receiving increasing attention as a reactive species in many chemical and biological systems. It can be generated easily by microwave discharge, chemically or by photosensitized irradiation and also is found to be a common reactive atmospheric pollutant generated by solar radiation.
I R, Politzer, G W, Griffin, J L, Laseter   +2 more
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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
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