singlet


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Related to singlet: Singlet oxygen, Singlet state

singlet

1. Physics a multiplet that has only one member
2. Chem a chemical bond consisting of one electron

singlet

[′siŋ·glət]
(quantum mechanics)
An energy level that is not split by a relatively weak interaction, and thus is not a multiplet or a member of a multiplet.
(spectroscopy)
A spectral line that cannot be resolved into components at even the highest resolution.
References in periodicals archive ?
This paper describes our work with 9-[(E)-2-phenylethenyl]anthracene, PEA 1, and 9-[(E)2-(naphtalen-2-yl)ethenyl]anthracene, NEA 2, as potential intracellular singlet oxygen traps.
Unlike UVA, IRA penetration of the skin does not cause photosensitized formation of singlet oxygen but initiates the formation of reactive oxygen species, mainly from the mitochondrial electron transport chain [9, 20, 21].
Boxin Ou's group at International Chemistry Testing (Milford, MA), using the ROS, superoxide anion, hydroxyl radical and singlet oxygen, and the RNS per-oxynitrite and the RCS hypochlorite.
When the material is very dilute, the distance between molecules is large and singlet fission does not occur.
After absorption of a photon of light, a molecule of the photosensitizer in its ground singlet state is excited to the singlet state (S) and receives the energy of the photon.
Pyropheophorbide methyl ester (PPME), as with other sensitizers, induced a biological damage depends on the singlet oxygen generation and other radicals of the reactive species of the molecular oxygen, (MacDonald et al.
Following the Dellinger meet, the singlets will be auctioned online at www.
They are organized into sections devoted to the structural properties, characteristics, and interactions of carotenoids; analytical methodologies for the measurement of carotenoids; application of spectroscopic methodologies to carotenoid systems; chemical breakdown of carotenoids in vitro and in vivo; antioxidant and photoprotection functions and reactions involving singlet oxygen and reactive oxygen species; cell culture methods applied to understanding carotenoid recognition and action; the chemistry and biochemistry of carotene oxidases, cell regulation, and cancer; and carotenoids and carotenoid biochemistry in animal systems.
Classic, edgey, 50's rock pin-up Describe your look from head to toe: DIY - leather jacket from New Look, vintage denim skirt from London, singlet and tights from Primark, boots from River Island, accessories by Tiffanies What's your favourite shop?
Ahmad hopes to finish recording the new singlet this summer season to be aired on all satellite music channels.
When we entered the water-- I in my shift and him in a singlet with buttons he claimed were mother-of-pearl--he stepped first into the shallows, but I plunged deep, fish-supple, into the slow current's cold.
Xanthohumol showed the highest activity in total oxygen radical absorbance capacity as well as singlet oxygen absorbance capacity.