singlet state

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Related to singlet: Singlet oxygen, Singlet state

sin·glet state

a transient, excited state of a molecule (for example, of chlorophyll, on absorbing light) in which a molecule can release energy as heat or light (fluorescence) and thus return to its initial (ground) state; it may alternatively assume a slightly more stable but still excited state (triplet state), with an electron still dislocated as before but with reversed spin.

singlet state

[sing′glit]
a state of an atom or molecule in which all electrons have paired spins.
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This panel of assays has led to the term, Oxygen Radical Absorbance Capacity using Multiple Radicals (ORAC-MR), which is a sum of the antioxidant capacity against six of the most predominant reactive species found in the human body: ROS (peroxyl radical, hydroxyl radical, superoxide anion, singlet oxygen), RNS (peroxynitrite) and RCS (hypochlorite).
When the material is very dilute, the distance between molecules is large and singlet fission does not occur.
But all eyes were on the short kid in the bright yellow singlet, hair in braids.
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.
Eight singlet patterns were not further analyzed because of lack of staff in the laboratories.
Xanthohumol showed the highest activity in total oxygen radical absorbance capacity as well as singlet oxygen absorbance capacity.
It has been theorized that zeaxanthin and lutein are concentrated in the retina because of their ability to quench singlet oxygen and to scavenge free radicals--because they pass through the blood and eye brain barriers and are required in the oxygen-rich environment of the retina to prevent light-mediated free radical damage to the retina.
2+] ESR signal changes, as the temperature increases and it becomes six singlet line forms at 800[degrees]C.
He was wearing a grey coloured singlet vest, three-quarter length navy blue shorts and white trainers.
Tokyo, Japan, Feb 15, 2007 - (JCN) - The National Institute of Advanced Industrial Science and Technology (AIST) announced their recent discovery that high-order fullerene C82 and metal-containing fullerene (both Nano-Carbons) can efficiently remove singlet oxygen (which causes oxidation).
Upon absorption of a photon by a chromophore, an electron is promoted from the singlet ground state (SO) to an intermediate vibrational level of the excited singlet state (S1).