scholarly journals Time-Resolved Magnetic Field Effects Distinguish Loose Ion Pairs from Exciplexes

2013 ◽  
Vol 135 (40) ◽  
pp. 15144-15152 ◽  
Author(s):  
Sabine Richert ◽  
Arnulf Rosspeintner ◽  
Stephan Landgraf ◽  
Günter Grampp ◽  
Eric Vauthey ◽  
...  
Keyword(s):  
Magnetic Field ◽  
Ion Pairs ◽  
Magnetic Field Effects ◽  
Time Resolved ◽  
Field Effects

Solvent Radical Anions in Irradiated Aliphatic Ketones and Esters as Observed Using Time-Resolved Magnetic Field Effects in the Recombination Fluorescence

2017 ◽  
Vol 231 (2) ◽  
Author(s):  
Vsevolod Borovkov ◽  
Andrey Taratayko ◽  
Alena Bessmertnykh ◽  
Victor Bagryansky ◽  
Yuriy Molin
Keyword(s):  
Magnetic Field ◽  
Ion Pairs ◽  
Delayed Fluorescence ◽  
Magnetic Field Effects ◽  
Time Resolved ◽  
Field Effects ◽  
Aliphatic Ketones ◽  
Stabilization Effect ◽  
Recombination Fluorescence ◽  
Hyperfine Couplings

AbstractIt has been found that addition of alcohols (~0.1 M) to some liquid ketones and esters results in well-pronounced oscillations in the decay of the delayed fluorescence intensity from irradiated solutions. The analysis of the time-resolved magnetic field effects (TR MFEs) in the recombination fluorescence has shown that these oscillations are a manifestation of singlet-triplet transitions in spin-correlated radical ion pairs (RIPs) created by irradiation. Comparison with literature data indicates that the transitions are due to hyperfine couplings (HFCs) in the solvent radical anion (RA), stabilized due to the presence of alcohol molecules. In acetone, this stabilization effect has been observed for methanol, ethanol, 2- propanol, and, to a smaller extent, for

Radical cations of n-alkanes in irradiated solutions as studied by time-resolved magnetic field effects

2002 ◽  
Vol 100 (9) ◽  
pp. 1379-1384 ◽  
Author(s):  
V. I. BOROVKOV ◽  
V. A. BAGRYANSKY ◽  
I. V. YELETSKIKH ◽  
YU. N. MOLIN
Keyword(s):  
Magnetic Field ◽  
Radical Cations ◽  
Magnetic Field Effects ◽  
Time Resolved ◽  
Field Effects

Time-resolved studies of radical pairs

2009 ◽  
Vol 37 (2) ◽  
pp. 358-362 ◽  
Author(s):  
Jonathan R. Woodward ◽  
Timothy J. Foster ◽  
Alex R. Jones ◽  
Adrian T. Salaoru ◽  
Nigel S. Scrutton
Keyword(s):  
Magnetic Field ◽  
Magnetic Fields ◽  
Chemical Reactions ◽  
Radical Pair ◽  
Radical Pair Mechanism ◽  
Magnetic Field Effects ◽  
Radical Pairs ◽  
Time Resolved ◽  
Field Effects ◽  
Field Sensitivity

The effect of magnetic fields on chemical reactions through the RP (radical pair) mechanism is well established, but there are few examples, in the literature, of biological reactions that proceed through RP intermediates and show magnetic field-sensitivity. The present and future relevance of magnetic field effects in biological reactions is discussed.

scholarly journals Effects of Preferential Solvation Revealed by Time-Resolved Magnetic Field Effects

2017 ◽  
Vol 121 (12) ◽  
pp. 2677-2683 ◽  
Author(s):  
Van Thi Bich Pham ◽  
Hao Minh Hoang ◽  
Günter Grampp ◽  
Daniel R. Kattnig
Keyword(s):  
Magnetic Field ◽  
Preferential Solvation ◽  
Magnetic Field Effects ◽  
Time Resolved ◽  
Field Effects
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