scholarly journals Solid-state Spin Trapping of the Hydroxyl Radical Formed by Gamma-irradiation in Ice and the Scavenging Effect of Sodiuml-Ascorbate

1996 ◽  
Vol 60 (12) ◽  
pp. 1971-1975 ◽  
Author(s):  
Hisashi Yoshioka ◽  
Hiroe Yoshioka ◽  
Kunihiko Hasegawa
Keyword(s):  
Solid State ◽  
Hydroxyl Radical ◽  
Gamma Irradiation ◽  
Spin Trapping ◽  
Scavenging Effect ◽  
State Spin

scholarly journals Spin Trapping of the Radicals Formed by gamma-Irradiation of Sodium Phosphite in the Solid State.

1970 ◽  
Vol 24 ◽  
pp. 2253-2255 ◽  
Author(s):  
Göran Adevik ◽  
Carl Lagercrantz ◽  
Gunnel Westöö ◽  
Ragnar Ohlson ◽  
Akira Shimizu
Keyword(s):  
Solid State ◽  
Gamma Irradiation ◽  
Spin Trapping

Enhancement of hydroxyl radical generation by phenols and their reaction intermediates during ozonation

1998 ◽  
Vol 38 (6) ◽  
pp. 147-154 ◽  
Author(s):  
Hideo Utsumi ◽  
Sang-Kuk Han ◽  
Kazuhiro Ichikawa
Keyword(s):  
Hydroxyl Radical ◽  
Hydroxyl Radicals ◽  
Spin Trapping ◽  
Active Species ◽  
Generation Rate ◽  
Peak Height Ratio ◽  
Dependent Manner ◽  
Concentration Dependent Manner ◽  
Phenol Derivatives ◽  
Semiquinone Radicals

Generation of hydroxyl radicals, one of the major active species in ozonation of water was directly observed with a spin-trapping/electron spin resonance (ESR) technique using 5,5-dimethyl-1-pyrrolineN-oxide (DMPO) as a spin-trapping reagent. Hydroxyl radical were trapped with DMPO as a stable radical, DMPO-OH. Eighty μM of ozone produced 1.08 X 10-6M of DMPO-OH, indicating that 1.4% of •OH is trapped with DMPO. Generation rate of DMPO-OH was determined by ESR/stopped-flow measurement. Phenol derivatives increased the amount and generation rate of DMPO-OH, indicating that phenol derivatives enhance •OH generation during ozonation of water. Ozonation of 2,3-, 2,5-, 2,6-dichlorophenol gave an ESR spectra of triplet lines whose peak height ratio were 1:2:1. ESR parameters of the triplet lines agreed with those of the corresponding dichloro-psemiquinone radical. Ozonation of 2,4,5- and 2,4,6-trichlorophenol gave the same spectra as those of 2,5- and 2,6-dichlorophenol, respectively, indicating that a chlorine group in p-position is substituted with a hydroxy group during ozonation. Amounts of the radical increased in an ozone-concentration dependent manner and were inhibited by addition of hydroxyl radical scavengers. These results suggest that p-semiquinone radicals are generated from the chlorophenols by hydroxyl radicals during ozonation. The p-semiquinone radicals were at least partly responsible for enhancements of DMPO-OH generation.

scholarly journals Decoherence-protected quantum gates for a hybrid solid-state spin register

Nature ◽  
2012 ◽  
Vol 484 (7392) ◽  
pp. 82-86 ◽  
Author(s):  
T. van der Sar ◽  
Z. H. Wang ◽  
M. S. Blok ◽  
H. Bernien ◽  
T. H. Taminiau ◽  
...  
Keyword(s):  
Solid State ◽  
Quantum Gates ◽  
State Spin

scholarly journals Environment-assisted quantum control of a solid-state spin via coherent dark states

2014 ◽  
Vol 10 (10) ◽  
pp. 725-730 ◽  
Author(s):  
Jack Hansom ◽  
Carsten H. H. Schulte ◽  
Claire Le Gall ◽  
Clemens Matthiesen ◽  
Edmund Clarke ◽  
...  
Keyword(s):  
Solid State ◽  
Quantum Control ◽  
State Spin
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